Repeated transmission method and apparatus, device and storage medium

Abstract

The present invention relates to the technical field of communications, and provides a repeated transmission method and apparatus, a device, and a storage medium. The method comprises: receiving a physical broadcast channel (PBCH) signal, wherein the PBCH signal comprises information indicating repeated transmission of a physical downlink control channel (PDCCH), and repeated transmission of a physical downlink shared channel (PDSCH) scheduled by the PDCCH is associated with the repeated transmission of the PDCCH. By means of the method, signaling overhead can be reduced, and communication resources can be saved.

Description

Repeated transmission methods, apparatus, devices and storage media

[0001] This disclosure claims priority to Chinese Patent Application No. 202510124680.6, filed on January 26, 2025, entitled “Repeated Transmission Method, Apparatus, Device and Storage Medium”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, specifically to a method, apparatus, device, and storage medium for repeated transmission. Background Technology

[0003] In non-terrestrial network (NTN) scenarios, when the downlink budget is insufficient, network devices can repeatedly transmit the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH).

[0004] Currently, if both PDCCH and PDSCH are enhanced, each independent channel is configured with a separate enhancement indication signal. Terminal devices can use this indication signal to determine whether network devices should repeatedly transmit PDCCH and PDSCH. However, in this method, configuring enhancement indication signals separately for each channel leads to a waste of communication resources. Summary of the Invention

[0005] This disclosure provides a method, apparatus, device, and storage medium for repeated transmission, which addresses the technical problem of wasted communication resources in related technologies.

[0006] In a first aspect, embodiments of this disclosure provide a method for repeated transmission, the method comprising:

[0007] Receive the PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0008] Secondly, embodiments of this disclosure provide a method for repeated transmission, the method comprising:

[0009] Send a PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0010] Thirdly, embodiments of this disclosure provide a retransmission device applied to a terminal device, the retransmission device including a receiving module, wherein:

[0011] The receiving module is used to receive the PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0012] Fourthly, embodiments of this disclosure provide a retransmission apparatus applied to a network device. The retransmission apparatus includes a transmitting module, wherein:

[0013] The transmitting module is used to transmit a PBCH signal, which includes information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by PDCCH is associated with repeated transmission of PDCCH.

[0014] Fifthly, embodiments of this disclosure provide a terminal device, including a memory, a transceiver, and a processor:

[0015] Memory, used to store computer programs;

[0016] A transceiver is used to send and receive data under the control of a processor.

[0017] The processor is used to read computer programs from memory and perform the following operations:

[0018] Receive the PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0019] Sixthly, embodiments of this disclosure provide a network device, including a memory, a transceiver, and a processor:

[0020] Memory, used to store computer programs;

[0021] A transceiver is used to send and receive data under the control of a processor.

[0022] The processor is used to read computer programs from memory and perform the following operations:

[0023] Send a PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0024] In a seventh aspect, this disclosure provides a processor-readable storage medium storing a computer program for causing a processor to perform the method of the first aspect or the method of the second aspect.

[0025] This disclosure provides a retransmission method, apparatus, device, and storage medium. A terminal device can receive a Physical Broadcast Channel (PBCH) signal sent by a network device. The PBCH signal may include information indicating retransmission of the Physical Downlink Control Channel (PDCCH). Retransmission of the Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH is associated with the retransmission of the PDCCH. In the above method, when the network device instructs the PDCCH to retransmit based on the indication information, this indication information can also instruct the PDSCH to retransmit. Therefore, the retransmission of the PDSCH can be bound to the retransmission of the PDCCH, and the network device does not need to send additional information indicating the retransmission of the PDSCH. This reduces signaling overhead, saves communication resources, and improves communication efficiency.

[0026] It should be understood that the description in the foregoing summary section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this disclosure;

[0029] Figure 2 is a schematic diagram of a repeated transmission method provided in an embodiment of this disclosure;

[0030] Figure 3 is a schematic diagram of repeated transmission of PDCCH provided in an embodiment of this disclosure;

[0031] Figure 4 is a schematic diagram of another PDCCH repetition transmission provided in an embodiment of this disclosure;

[0032] Figure 5 is a flowchart illustrating another repetitive transmission method provided in an embodiment of this disclosure;

[0033] Figure 6 is a resource diagram of a retransmitted PDSCH provided in an embodiment of this disclosure;

[0034] Figure 7 is a resource diagram of a repetitive transmission PDSCH provided in an embodiment of this disclosure;

[0035] Figure 8 is a schematic diagram of a method for receiving repeatedly transmitted PDCCH and PDSCH according to an embodiment of this disclosure;

[0036] Figure 9 is a schematic diagram of a time slot overlap provided in an embodiment of this disclosure;

[0037] Figure 10 is a schematic diagram of a repeating transmission device provided in an embodiment of this disclosure;

[0038] Figure 11 is a schematic diagram of another repeating transmission device provided in an embodiment of this disclosure;

[0039] Figure 12 is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure;

[0040] Figure 13 is a schematic diagram of the structure of a network device provided in an embodiment of this disclosure. Detailed Implementation

[0041] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0043] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0044] This disclosure provides a retransmission method, apparatus, device, and storage medium. The PBCH signal sent by the network device to the terminal device may include information indicating PDCCH retransmission. The retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH. In this way, the network device does not need to send additional information indicating PDSCH retransmission to the terminal device, thus saving signaling overhead and communication resources.

[0045] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0046] The technical solutions provided in this disclosure can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These systems may include terminal equipment and network equipment. The systems may also include a core network component, such as the Evolved Packet Core (EPC) or the 5G Core Network (5GC).

[0047] The terminal devices involved in the embodiments of this disclosure can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in 5G or 6G systems, the terminal device may be called User Equipment (UE). Wireless terminal devices can be USB storage devices, other personal computer memory devices, and dongles. They can also communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples of such devices include Personal Communication Service (PCS) telephones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablets, and Machine-type Communication (MTC) terminal devices. Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile devices, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers / modems that meet the limitations of this definition, but are not limited to these in the embodiments of this disclosure.

[0048] The network device involved in this disclosure can be a base station, which may include multiple cells providing services to terminals. Depending on the application, the base station may also be called an access point, or a device in the access network that communicates with wireless terminal devices through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network device involved in this disclosure can be an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, or a Home evolved Node B (HeNB), relay node, femto, pico, network testing equipment, etc., and is not limited in this disclosure. In some network architectures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, which may also be geographically separated.

[0049] For ease of understanding, the concepts involved in the embodiments of this disclosure will be explained below.

[0050] Information indicating PDCCH retransmission: This information can indicate whether the network device should retransmit the PDCCH and the resources available for retransmitting the PDCCH. The information indicating PDCCH retransmission may include first indication information and / or second indication information.

[0051] First indication information: The first indication information can be used to indicate whether the network device will repeatedly transmit the PDCCH to the terminal device. For example, when the first indication information is 1, it means that the network device will repeatedly transmit the PDCCH to the terminal device, and when the first indication information is 0, it means that the network device will not repeatedly transmit the PDCCH to the terminal device.

[0052] Second indication information: The second indication information can be used to indicate resources for repeated PDCCH transmission. For example, the second indication information can indicate the time domain resources for repeated PDCCH transmission by the network device. For example, the second indication information can indicate the time slot corresponding to the repeated PDCCH, and the symbols of the repeated PDCCH in the time slot can be determined by looking up a table (e.g., the first two symbols in the time slot). The second indication information may include third indication information.

[0053] Third indication information: The third indication information can indicate the interval between the first and second time slots, or it can indicate the offset of the second time slot relative to the first time slot. The first time slot can be the time slot for the first PDCCH transmission, and the second time slot can be the time slot for repeated PDCCH transmissions. The terminal device can determine the time slot for repeated PDCCH transmissions based on the time slot for the first PDCCH transmission and the third indication information.

[0054] Fourth indication information: The fourth indication information can be used to indicate resources for repeated PDSCH transmission. For example, the fourth indication information can indicate the time slot for repeated PDSCH transmission, the start symbol corresponding to the PDSCH in the time slot, and the duration of the symbol. The terminal device can receive the repeated PDSCH according to the fourth indication information. The fourth indication information may include the fifth indication information and / or the sixth indication information.

[0055] Fifth indication information: The fifth indication information can be used to indicate whether the timeslot of the repeated PDSCH is the same as the timeslot of the repeated PDCCH. For example, when the fifth indication information is 0, it indicates that the timeslot of the repeated PDSCH is the same as the timeslot of the repeated PDCCH; when the fifth indication information is 1, it indicates that the timeslot of the repeated PDSCH is different from the timeslot of the repeated PDCCH (the timeslot of the repeated PDSCH is the next timeslot corresponding to the timeslot of the repeated PDCCH). In some embodiments, when the fifth indication information is N, it indicates that the timeslot of the repeated PDSCH is different from the timeslot of the repeated PDCCH, and the timeslot of the repeated PDSCH is the next N timeslots corresponding to the timeslot of the repeated PDCCH.

[0056] The sixth indication information can be used to indicate the interval between the third and fourth time slots, or to indicate the offset of the fourth time slot relative to the third time slot. The third time slot can be the time slot for the first PDSCH transmission determined based on the PDCCH, and the fourth time slot can be the time slot for repeated PDSCH transmissions. The terminal device can determine the time slot for repeated PDSCH transmissions based on the time slot of the first PDSCH transmission and the sixth indication information.

[0057] The communication system of this disclosure embodiment will now be described with reference to FIG1.

[0058] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this disclosure. Referring to Figure 1, the system includes a network device and a terminal device. The network device can send indication information indicating PDCCH enhancement and indication information indicating PDSCH enhancement to the terminal device. The network device can repeatedly transmit PDCCH and PDSCH. After receiving the indication information indicating PDCCH enhancement and the indication information indicating PDSCH enhancement, the terminal device can search for the repeatedly transmitted PDCCH and PDSCH, and merge and decode the first transmitted PDCCH and the repeatedly transmitted PDCCH, as well as merge and decode the first transmitted PDSCH and the repeatedly transmitted PDSCH.

[0059] In some implementations, if the network device enhances the PDCCH and PDSCH, each independent channel is individually configured with indication information for coverage enhancement (i.e., retransmission). The terminal device can determine, based on this indication information, whether the network device should retransmit the PDCCH and PDSCH, and the resources required for retransmission. For example, the network device can determine the information indicating PDCCH retransmission and the information indicating PDSCH retransmission. The information indicating PDCCH retransmission can specify the number of times the PDCCH is retransmitted and the resources required for retransmission, while the information indicating PDSCH retransmission can specify the number of times the PDSCH is retransmitted and the resources required for retransmission. However, in the above methods, the number of bits available for indication in the message content before PDSCH transmission is limited, and configuring coverage enhancement indication information separately for each channel leads to a waste of communication resources.

[0060] To address the aforementioned technical problems, this disclosure provides a retransmission method. A terminal device can receive a PBCH signal sent by a network device. The PBCH signal includes information indicating PDCCH retransmission, and PDSCH retransmission scheduled by the PDCCH is associated with the PDCCH retransmission. The terminal device can receive the retransmitted PDCCH and PDSCH according to the PBCH signal. In this method, the retransmitted PDCCH received by the terminal device may include information indicating PDSCH retransmission. Therefore, the terminal device can receive the retransmitted PDSCH according to the retransmitted PDCCH; that is, the PDSCH retransmission is bound to the PDCCH retransmission. Thus, the network device does not need to send additional information indicating PDSCH retransmission to the terminal device, thereby saving signaling overhead and communication resources.

[0061] The channel state information processing method provided in this disclosure will now be described with reference to specific embodiments. It is understood that this disclosure uses network devices and terminal devices as examples to illustrate the interaction, but this disclosure does not limit the execution subject of the interaction. For example, the method executed by the network device in the embodiments of this disclosure can also be implemented by modules (e.g., circuits, chips, or chip systems) in the network device. Similarly, the method executed by the terminal device in the embodiments of this disclosure can also be implemented by modules (e.g., circuits, chips, or chip systems) in the terminal device. The following description uses terminal devices and network devices as examples.

[0062] Figure 2 is a schematic diagram of a retransmission method provided in an embodiment of this disclosure. Referring to Figure 2, the retransmission method includes:

[0063] S201. The terminal device receives a PBCH signal sent by the network device. The PBCH signal includes information indicating the repeated transmission of PDCCH, wherein the repeated transmission of PDSCH scheduled by PDCCH is associated with the repeated transmission of PDCCH.

[0064] The PBCH signal may include information indicating that the PDCCH will be repeatedly transmitted. For example, when a network device repeatedly transmits the PDCCH, the terminal device can determine, based on the information indicating that the PDCCH will be repeatedly transmitted in the PBCH signal, as well as the resources available for the network device to repeatedly transmit the PDCCH. Therefore, the terminal device can receive the PDCCH repeatedly transmitted by the network device based on this information indicating that the PDCCH will be repeatedly transmitted.

[0065] In some embodiments, PDCCH retransmission can refer to the network device retransmitting the PDCCH. For example, when the network device enhances the downlink, after sending the PDCCH to the terminal device, the network device can retransmit the PDCCH to the terminal device to enhance the coverage of the PDCCH.

[0066] In some embodiments, PDCCH retransmission can also refer to the network device transmitting PDCCH multiple times. For example, after transmitting PDCCH to the terminal device, the network device can transmit PDCCH to the terminal device M more times, where M can be an integer greater than 1 (e.g., 2, 3, and 4). In this way, the network device can flexibly enhance the coverage of PDCCH.

[0067] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0068] First instruction message;

[0069] Second instruction information.

[0070] The first indication information can be used to indicate whether the PDCCH should be transmitted repeatedly.

[0071] In some embodiments, when the first indication information instructs the network device to repeatedly transmit PDCCH to the terminal device, the terminal device, upon receiving the first indication information, can determine that the network device is transmitting 2 PDCCHs, and therefore, the terminal device can receive 2 PDCCHs. When the first indication information instructs the network device not to repeatedly transmit PDCCH to the terminal device, the terminal device, upon receiving the first indication information, can determine that the network device is transmitting 1 PDCCH, and therefore, the terminal device can receive 1 PDCCH.

[0072] In some embodiments, the terminal device may receive PDCCHs repeatedly transmitted by the network device based on the resources indicated by the second indication information. For example, the terminal device may determine the resources for receiving PDCCHs based on the time slot indicated by the second indication information, the start symbol corresponding to the PDCCH in the time slot, and the duration of the symbol, and receive the PDCCHs based on those resources.

[0073] In some embodiments, PDCCH retransmission can be performed inter-slot. For example, the network device can retransmit PDCCH within adjacent time slots, or it can retransmit PDCCH across multiple time slots. For instance, when the network device retransmits PDCCH within adjacent time slots, it can transmit the first PDCCH in the first time slot and then retransmit the second PDCCH in the second time slot (the time slot adjacent to the first time slot). Similarly, when the network device retransmits PDCCH across two time slots, it can transmit the first PDCCH in the first time slot and then retransmit the second PDCCH in the fourth time slot (two time slots away from the first time slot).

[0074] In some embodiments, the PDCCH may be transmitted in multiple time slots. For example, when the number of search spaces for the PDCCH is 2, the network device may transmit the PDCCH in any one of the 2 search spaces.

[0075] The repeated transmission of PDCCH will be explained below with reference to Figures 3 and 4.

[0076] Figure 3 is a schematic diagram of repeated PDCCH transmission according to an embodiment of this disclosure. In the embodiment shown in Figure 3, the repeated PDCCH transmission method is to repeatedly transmit PDCCH within adjacent time slots. Referring to Figure 3, this includes the t-th time slot and the (t+1)-th time slot. The t-th time slot and the (t+1)-th time slot are adjacent. The first PDCCH can be transmitted in the first two symbols of the t-th time slot, and the repeatedly transmitted PDCCH can be transmitted in the first two symbols of the (t+1)-th time slot.

[0077] In the embodiment shown in Figure 3, when the first PDCCH may be transmitted in other time slots, the repeatedly transmitted PDCCH may also be transmitted in other time slots adjacent to each other time slots.

[0078] Figure 4 is a schematic diagram of another PDCCH repetition transmission provided by an embodiment of this disclosure. In the embodiment shown in Figure 4, the PDCCH is repetitively transmitted every Q time slots. Referring to Figure 4, it includes time slot 1 and time slot 2. Time slot 1 and time slot 2 are separated by Q time slots. The first PDCCH can be transmitted in the first two symbols of time slot 1, and the repetitive PDCCH can be transmitted in the first two symbols of time slot 2.

[0079] In the embodiment shown in Figure 4, when the first PDCCH may be transmitted in other time slots, the repeatedly transmitted PDCCH may also be transmitted in other time slots separated by Q time slots.

[0080] In some embodiments, the PBCH signal may include first indication information and second indication information. For example, when a network device repeatedly transmits a PDCCH, the PBCH signal sent by the network device to the terminal device may include first indication information and second indication information. The terminal device can determine that the network device will repeatedly transmit the PDCCH based on the first indication information, and receive the repeatedly transmitted PDCCH based on the second indication information.

[0081] In some embodiments, the PBCH signal may include first indication information but not second indication information. For example, when the network device does not repeatedly transmit the PDCCH to the terminal device, the terminal device does not need to receive repeatedly transmitted PDCCH; therefore, the PBCH signal may not include second indication information.

[0082] In some embodiments, the PBCH signal may include second indication information but not the first indication information. For example, when the network device and the terminal device pre-agree to repeatedly transmit the PDCCH, the terminal device has determined that the network device will repeatedly transmit the PDCCH; therefore, the PBCH signal may not include the first indication information.

[0083] It should be noted that when the network device does not repeatedly transmit PDCCH to the terminal device, or when the network device and the terminal device agree in advance to repeatedly transmit PDCCH, the PBCH signal may also include the first indication information and the second indication information. This disclosure does not limit this aspect.

[0084] In some embodiments, the repeated transmission of PDSCH scheduled by PDCCH is associated with the repeated transmission of PDCCH. In this way, the terminal device can determine the repeated transmission information of PDSCH based on the repeated transmission of PDCCH. Therefore, the repeated transmission of PDCCH and PDSCH are bound together, thereby saving communication resources.

[0085] In some embodiments, the PDCCH may include fourth indication information, which can be used to indicate resources for repeated PDSCH transmission. For example, the fourth indication information can be used to indicate time-domain and frequency-domain resources for repeated PDSCH transmission, and the terminal device can receive the repeatedly transmitted PDSCH from the network device according to the fourth indication information in the PDCCH. For example, the fourth indication information can indicate the time slot, start symbol, and duration of the repeated PDSCH transmission from the network device. For example, the fourth indication information indicates that the time slot for repeated PDSCH transmission is the first time slot, the start symbol is the fourth symbol, and the duration of the symbol is eight symbols. In this way, the terminal device can search for the repeatedly transmitted PDSCH from the network device between the fourth and eleventh symbols of the first time slot.

[0086] In some embodiments, PDSCH retransmission can refer to the network device retransmitting the PDSCH. For example, when the network device enhances the downlink, after sending the PDSCH to the terminal device, the network device can retransmit the PDSCH to the terminal device to enhance the PDSCH coverage.

[0087] In some embodiments, PDSCH retransmission can also refer to the network device transmitting PDSCH multiple times. For example, after transmitting PDSCH to the terminal device, the network device can transmit PDSCH to the terminal device R more times, where R can be an integer greater than 1 (e.g., 2, 3, and 4). In this way, the network device can flexibly enhance the coverage of PDSCH.

[0088] In some embodiments, the PDSCH can be the PDSCH of a System Information Block (SIB). For example, the PDSCH can be a PDSCH with SIB1, where SIB1 can include information required by the terminal device to assess whether it can access the current cell, and can also include scheduling information from other SIBs.

[0089] In some embodiments, the PDCCH can be the PDCCH used to schedule the PDSCH with SIB1.

[0090] This disclosure provides a method for retransmission. A terminal device can receive a PBCH signal sent by a network device. The PBCH signal includes first indication information for indicating whether to retransmit the PDCCH and second indication information for indicating resources for retransmitting the PDCCH. The PDCCH may include information indicating PDSCH retransmission. In this method, since the PDCCH may include information indicating PDSCH retransmission, PDSCH retransmission can be bound to PDCCH retransmission. The network device does not need to send additional information indicating PDSCH retransmission to the terminal device, thus saving signaling overhead and communication resources.

[0091] Based on the embodiment shown in Figure 2, another method of repeated transmission will be described below with reference to Figure 5.

[0092] Figure 5 is a flowchart illustrating another repetitive transmission method provided in this embodiment of the present disclosure. Referring to Figure 5, the method flow includes:

[0093] S501, The terminal device receives the PBCH signal sent by the network device.

[0094] The PBCH signal includes information indicating the retransmission of PDCCH, the retransmission of PDSCH scheduled by PDCCH, and is associated with the retransmission of PDCCH.

[0095] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0096] First instruction message;

[0097] Second instruction information.

[0098] In some embodiments, the first indication information may be based on the bit indication of the PBCH. For example, when the first indication information is "0", it indicates that the network device should not retransmit the PDCCH, and when the first indication information is "1", it indicates that the network device should retransmit the PDCCH.

[0099] The bits in PBCH can be at least one of the following:

[0100] The existing bits of PBCH;

[0101] The newly added bits in PBCH;

[0102] PBCH spare bits.

[0103] In some embodiments, the first indication information may be based on a 1-bit indication. The 1-bit used for indication in the PBCH may be an existing bit, a newly added bit, or a spare bit.

[0104] In some embodiments, the Master Information Block (MIB) message in the PBCH has 1 spare bit, and the physical layer message in the PBCH has 2 spare bits. When the first indication information is based on the spare bit indication in the MIB message, the spare bit can be used for Frequency Range 1 (FR1) and Frequency Range 2 (FR2). When the first indication information is based on the spare bit indication in the physical layer message in the PBCH, the spare bit can be used for FR1.

[0105] In some embodiments, the frequency range of FR1 can be 410MHz to 7125MHz, or 450MHz to 6000MHz, or 410MHz to 6000MHz. It should be noted that the frequency range of FR1 can also be any other feasible frequency range, and this disclosure does not limit it.

[0106] In some embodiments, the frequency range of FR2 can be from 24250MHz to 52600MHz, or from 24.25GHz to 52.6GHz. It should be noted that the frequency range of FR2 can also be any other feasible frequency range, and this disclosure does not limit it.

[0107] The second instruction information may include at least one of the following:

[0108] Index of the Synchronization Signal Block (SSB);

[0109] First configuration parameters;

[0110] Second configuration parameter;

[0111] The number of time slots contained in each radio frame under the current subcarrier conditions;

[0112] Third instruction information.

[0113] SSB indexes can be used to identify different SSBs. SSB indexes can help terminal devices distinguish multiple SSB signals from the same network device, which may be transmitted using different beam directions, thereby achieving beam management.

[0114] The first configuration parameter can be used to determine the starting timeslot for PDCCH transmission. This first configuration parameter can be an offset parameter, which provides a time offset for PDCCH transmission. Therefore, the first configuration parameter can affect the timeslot for PDCCH transmission; by adjusting the first configuration parameter, network devices can start transmitting PDCCH at different times.

[0115] The second configuration parameter can be used to determine the number of time slots required to transmit one PDCCH. For example, when the second configuration parameter is 0.5, it means that the number of time slots required to transmit one PDCCH is 0.5, that is, 1 time slot can transmit 2 PDCCHs, or it can be expressed as each time slot includes 2 PDCCHs; when the second configuration parameter is 1, it means that the number of time slots required to transmit one PDCCH is 1, that is, 1 time slot can transmit 1 PDCCH, or it can be expressed as each time slot includes 1 PDCCH; when the second configuration parameter is 2, it means that the number of time slots required to transmit one PDCCH is 2, that is, 2 time slots can transmit 1 PDCCH, or it can be expressed as every 2 time slots include 1 PDCCH.

[0116] The parameters determined based on the subcarrier spacing are associated with the subcarrier spacing. For example, when the subcarrier spacing is 15 kHz, the parameters determined based on the subcarrier spacing can be 0, and when the subcarrier spacing is 30 kHz, the parameters determined based on the subcarrier spacing can be 1.

[0117] In some embodiments, the parameter determined based on the subcarrier spacing can also represent the relationship between the subcarrier spacing and the time slot length. For example, when the parameter is 0, the subcarrier spacing is 15kHz and the time slot length is 1ms; when the parameter is 1, the subcarrier spacing is 30kHz and the time slot length is 0.5ms; and when the parameter is 2, the subcarrier spacing is 60kHz and the time slot length is 0.25ms.

[0118] The number of time slots in each radio frame under the current subcarrier condition is related to a parameter determined based on the subcarrier spacing. For example, if the length of each radio frame is fixed at 10 ms, when the parameter determined based on the subcarrier spacing is 0, the time slot length is 1 ms, therefore, each radio frame contains 10 time slots. When the parameter determined based on the subcarrier spacing is 1, the time slot length is 0.5 ms, therefore, each radio frame contains 20 time slots.

[0119] The third indication information can indicate the interval between the first and second time slots, or it can indicate the offset of the second time slot relative to the first time slot.

[0120] In some embodiments, the first time slot can be the time slot for the first transmission of the PDCCH. For example, in the embodiment shown in FIG3, the first time slot can be the t-th time slot, and in the embodiment shown in FIG4, the first time slot can be time slot 1.

[0121] In some embodiments, the second time slot can be a time slot for repeated transmission of the PDCCH. For example, in the embodiment shown in FIG3, the second time slot can be the (t+1)th time slot, and in the embodiment shown in FIG4, the second time slot can be time slot 2.

[0122] In some embodiments, the third indication information may be indicated by bits or based on any feasible implementation method, which is not limited in this disclosure.

[0123] In some embodiments, the third indication information may indicate the interval between the first time slot and the second time slot. When the third indication information is 0, it indicates that the first time slot and the second time slot are adjacent. When the third indication information is 1, it indicates that the first time slot and the second time slot are separated by 1 time slot. When the third indication information is 2, it indicates that the first time slot and the second time slot are separated by 2 time slots.

[0124] In some embodiments, the third indication information may indicate the offset of the second time slot relative to the first time slot. When the third indication information is 1, it indicates that the first time slot and the second time slot are adjacent. When the third indication information is 2, it indicates that the first time slot and the second time slot are separated by 1 time slot. When the third indication information is 3, it indicates that the first time slot and the second time slot are separated by 2 time slots.

[0125] After receiving the PDCCH according to the first and second indication information, the terminal device can receive the retransmitted PDSCH according to the PDCCH. The PDCCH includes fourth indication information, which indicates the resources for the retransmitted PDSCH.

[0126] The fourth instruction information may include at least one of the following:

[0127] First information;

[0128] Second information.

[0129] The first information includes the fifth instruction information, the first starting symbol, and the first symbol length.

[0130] In some embodiments, in the embodiment shown in FIG3, when the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the time slot for repeated PDSCH transmission can be the t-th time slot; when the fifth indication information indicates that the time slot for repeated PDSCH transmission is different from the time slot for repeated PDCCH transmission, the time slot for repeated PDSCH transmission can be the (t+1)-th time slot.

[0131] In some embodiments, the first start symbol may represent the start symbol of repeated PDSCH transmission. For example, when the first start symbol is the fourth symbol in the time slot, the network device may start transmitting PDSCH from the fourth symbol in the time slot for repeated PDSCH transmission.

[0132] In some embodiments, the first symbol length can represent the symbol length for repeated transmission of the PDSCH. For example, when the first symbol length is 10 symbols, the network device can repeatedly transmit the PDSCH for 10 consecutive symbols.

[0133] In some embodiments, the fifth indication information may be represented by K, the first start symbol may be represented by S, and the length of the first symbol may be represented by L.

[0134] In some embodiments, the first information can be determined by looking up a table (a specific table specified in the protocol) based on the time domain resource assignment information in the PDCCH, or it can be determined according to any feasible implementation method, and the embodiments disclosed herein do not limit this.

[0135] For example, the network device repeatedly transmits the PDSCH in time slot 1, and time slot 2 is the next time slot after time slot 1. When the fifth indication information indicates that the time slot for retransmitting the PDSCH is the same as the time slot for retransmitting the PDCCH, the first start symbol is the 3rd symbol, and the first symbol length is 10, the resources corresponding to the retransmitted PDSCH are the 3rd to 12th symbols of time slot 1. When the fifth indication information indicates that the time slot for retransmitting the PDSCH is different from the time slot for retransmitting the PDCCH, the first start symbol is the 4th symbol, and the first symbol length is 9, the resources corresponding to the retransmitted PDSCH are the 4th to 12th symbols of time slot 1.

[0136] The second information includes the sixth instruction information, the second starting symbol, and the second symbol length.

[0137] In some embodiments, the third time slot may be the time slot of the first PDSCH transmission. For example, the time slot of the first PDSCH transmission may be determined by looking up the time domain indication information in the PDCCH, wherein the time domain reference is the time slot of the last acquired PDCCH.

[0138] In some embodiments, the fourth time slot may be a time slot for repeated PDSCH transmission. For example, the fourth time slot may be determined by the third time slot and the sixth indication information, wherein the sixth indication information may be additional time domain offset indication information (K offset).

[0139] In some embodiments, the sixth indication information can be used to indicate the interval between the third and fourth time slots, or it can be used to indicate the offset of the fourth time slot relative to the third time slot. For example, when the sixth indication information is used to indicate the interval between the third and fourth time slots, when the sixth indication information is 1, it indicates that the third time slot and the fourth time slot are separated by 1 time slot; when the sixth indication information is 2, it indicates that the third time slot and the fourth time slot are separated by 2 time slots; and when the sixth indication information is 3, it indicates that the third time slot and the fourth time slot are separated by 3 time slots. For example, when the sixth indication information is used to indicate the offset of the fourth time slot relative to the third time slot, when the sixth indication information is 1, it indicates that the third time slot and the fourth time slot are adjacent; when the sixth indication information is 2, it indicates that the third time slot and the fourth time slot are separated by 1 time slot; and when the sixth indication information is 3, it indicates that the third time slot and the fourth time slot are separated by 2 time slots.

[0140] In some embodiments, when the network device repeatedly transmits PDCCH but not PDSCH, the sixth indication information can be 0, which can improve the flexibility of communication.

[0141] In some embodiments, the sixth indication information can be indicated by bits or based on any feasible implementation, and this disclosure does not limit this. For example, the sixth indication information can be indicated based on reserved bits in the Downlink Control Information (DCI). For example, for a DCI that schedules SIB1 transmission, there are 15 or 17 reserved bits, and the network device can use some of these bits to indicate the sixth indication information, wherein the maximum offset using T bits is 2. T There are 2 time slots, that is, the maximum interval between the third and fourth time slots is 2. T Each time slot.

[0142] In some embodiments, the second start symbol may represent the start symbol of a repeated PDSCH transmission. For example, when the second start symbol is the fourth symbol in a time slot, the network device may start transmitting PDSCH from the fourth symbol in a time slot for repeated PDSCH transmission.

[0143] In some embodiments, the second symbol length can represent the symbol length for repeated PDSCH transmission. For example, when the second symbol length is 10 symbols, the network device can repeatedly transmit PDSCH for 10 consecutive symbols.

[0144] For example, the network device transmits the PDSCH for the first time in time slot 1. When the sixth indication information indicates that the third and fourth time slots are separated by one time slot, the second start symbol is the third symbol, and the second symbol length is 10, the resources corresponding to the repeatedly transmitted PDSCH are the third to twelfth symbols of time slot 2, where time slot 2 is separated from time slot 1 by one time slot. When the sixth indication information indicates that the third and fourth time slots are separated by two time slots, the second start symbol is the fourth symbol, and the second symbol length is 9, the resources corresponding to the repeatedly transmitted PDSCH are the fourth to twelfth symbols of time slot 3, where time slot 3 is separated from time slot 1 by two time slots.

[0145] In some embodiments, the sixth indication information can be represented by K offset, the second start symbol can also be represented by S, and the second symbol length can also be represented by L.

[0146] The resources for repeated PDSCH transmission will be explained below with reference to Figures 6 and 7.

[0147] Figure 6 is a resource diagram of a retransmitted PDSCH according to an embodiment of this disclosure. In the embodiment shown in Figure 6, the fourth indication information includes the first information, wherein the fifth indication information is 0, indicating that the time slot of the retransmitted PDSCH is the same as the time slot of the retransmitted PDCCH. Referring to Figure 6, it includes the t-th time slot and the (t+1)-th time slot. The t-th time slot and the (t+1)-th time slot are adjacent. The first two symbols of the t-th time slot are the resources of the retransmitted PDCCH. The third to the last symbol of the t-th time slot are the resources of the retransmitted PDSCH. When the fifth indication information is 1, it indicates that the time slot of the retransmitted PDSCH is different from the time slot of the retransmitted PDCCH. Therefore, the third to the last symbol of the (t+1)-th time slot are the resources of the retransmitted PDSCH.

[0148] Figure 7 is a resource diagram of a repetitive PDSCH according to an embodiment of the present disclosure. In the embodiment shown in Figure 7, the fourth indication information includes the second information, wherein the sixth indication information indicates that the time slot of the first PDSCH transmission is two time slots apart from the time slot of the repetitive PDSCH transmission. Referring to Figure 7, it includes time slot 1, time slot 2, time slot 3, ..., time slot 5. Time slot 1 and time slot 2 are adjacent, and time slot 3 and time slot 5 are two time slots apart.

[0149] Please refer to Figure 7. The first two symbols of time slot 1 are for transmitting the first PDCCH; the first two symbols of time slot 2 are for retransmitting the PDCCH; the third to the last symbol of time slot 3 are for transmitting the first PDSCH; and the third to the last symbol of time slot 5 are for retransmitting the PDSCH. In this way, network devices can bind the retransmission of PDSCH to the retransmission of PDCCH based on the sixth indication information in the PDCCH, thereby reducing signaling overhead, saving communication resources, and improving communication efficiency.

[0150] S502. The network device repeatedly transmits PDCCH and PDSCH to the terminal device based on the PBCH signal.

[0151] It should be noted that the method by which the network device repeatedly transmits PDCCH and PDSCH to the terminal device based on the PBCH signal is the same as the method by which the terminal device receives the repeatedly transmitted PDCCH and PDSCH based on the PBCH signal. This will be explained in detail in the following embodiments.

[0152] S503. The terminal equipment receives the repeatedly transmitted PDCCH and PDSCH based on the PBCH signal.

[0153] In some embodiments, the terminal device can receive repeatedly transmitted PDCCHs based on the PBCH signal, and receive repeatedly transmitted PDSCHs based on the repeatedly transmitted PDCCHs. For example, the terminal device can determine the resources for receiving repeatedly transmitted PDCCHs based on the first and second indication information in the PBCH signal, and receive the repeatedly transmitted PDCCHs based on the resources. The terminal device can also determine the resources for receiving repeatedly transmitted PDSCHs based on the fourth indication information in the repeatedly transmitted PDCCHs, and receive the repeatedly transmitted PDSCHs based on the resources.

[0154] For example, a first indication information indicates that the network device will repeatedly transmit the PDCCH, and a second indication information indicates that the time slot for repeatedly transmitting the PDCCH is time slot 1, where the next time slot after time slot 1 is time slot 2. The terminal device can receive the repeatedly transmitted PDCCH in time slot 1. If the fifth indication information in the PDCCH indicates that the time slot for repeatedly transmitting the PDSCH is the same as the time slot for repeatedly transmitting the PDCCH, and the first start symbol is the 3rd symbol with a first symbol length of 10, the terminal device can receive the repeatedly transmitted PDSCH from the network device in time slot 1 from the 3rd to the 12th symbol. If the fifth indication information in the PDCCH indicates that the time slot for repeatedly transmitting the PDSCH is different from the time slot for repeatedly transmitting the PDCCH, and the first start symbol is the 3rd symbol with a first symbol length of 10, the terminal device can receive the repeatedly transmitted PDSCH from the network device in time slot 2 from the 3rd to the 12th symbol.

[0155] For example, the first indication information indicates that the network device will repeatedly transmit the PDCCH, and the second indication information indicates that the time slot for repeatedly transmitting the PDCCH is time slot 1. The terminal device can receive the repeatedly transmitted PDCCH in time slot 1 and determine the time slot for the first transmission of the PDSCH as time slot 2 based on the PDCCH. When the sixth indication information in the PDCCH indicates that the time slot for repeatedly transmitting the PDSCH is 2 time slots away from the time slot for the first transmission of the PDSCH, the second start symbol is the 3rd symbol, and the second symbol length is 10, the terminal device can receive the repeatedly transmitted PDSCH from the network device in the 3rd to the 12th symbols of time slot 3 (2 time slots away from time slot 2).

[0156] This disclosure provides a retransmission method in which a terminal device receives a PBCH signal sent by a network device, and receives retransmitted PDCCH and PDSCH according to the PBCH signal. In this method, the PBCH signal includes first indication information for indicating whether to retransmit the PDCCH, and second indication information for indicating resources for retransmitting the PDCCH. Furthermore, the PDCCH may include fourth indication information for indicating resources for retransmitting the PDSCH. Since the PDCCH may include information indicating PDSCH retransmission, PDSCH retransmission can be bound to PDCCH retransmission. The network device does not need to send additional information indicating PDSCH retransmission to the terminal device, thus saving signaling overhead and communication resources.

[0157] Based on any of the above embodiments, the above retransmission method includes a method for a terminal device to receive PDCCH and PDSCH retransmitted by a network device according to the PBCH signal. The method of receiving retransmitted PDCCH and PDSCH will be described below with reference to FIG8.

[0158] Figure 8 is a schematic diagram of a method for receiving repeatedly transmitted PDCCH and PDSCH according to an embodiment of this disclosure. Referring to Figure 8, the method flow includes:

[0159] S801. The network device sends a PBCH signal to the terminal device. The PBCH signal includes first indication information and second indication information.

[0160] S802. The network device repeatedly transmits the PDCCH to the terminal device according to the second instruction information. The PDCCH includes the fourth instruction information.

[0161] It should be noted that the method by which the network device repeatedly transmits PDCCH to the terminal device according to the second instruction information is the same as the method by which the terminal device receives the PDCCH repeatedly transmitted by the network device according to the second instruction information. This will be explained in detail in step S804.

[0162] S803. The network device repeatedly transmits the PDSCH to the terminal device according to the fourth instruction information of the PDCCH.

[0163] It should be noted that the method by which the network device repeatedly transmits PDSCH to the terminal device according to the fourth indication information of PDCCH is the same as the method by which the network device receives PDSCH repeatedly transmitted by the network device according to the fourth indication information of PDCCH. This will be explained in detail in step S805.

[0164] S804. When the first instruction information indicates that the PDCCH is repeatedly transmitted, the terminal device receives the PDCCH repeatedly transmitted by the network device according to the second instruction information.

[0165] In some embodiments, the terminal device receives the PDCCH repeatedly transmitted by the network device according to the second indication information. Specifically, it may be: determining a first time slot according to the SSB index, a first configuration parameter, a second configuration parameter, a parameter determined based on the subcarrier interval, and the number of time slots contained in each radio frame under the current subcarrier condition; determining a second time slot according to the third indication information and the first time slot; and receiving the repeatedly transmitted PDCCH according to the second time slot.

[0166] In some embodiments, without PDCCH enhancement, the PDCCH used to schedule SIB1 can be transmitted in the first time slot (which can be the n0th time slot and the n0+1th time slot), wherein the n0th time slot satisfies the following formula:

[0167] Where O is the first configuration parameter, i is the index of the SSB; μ is the parameter determined based on the subcarrier spacing; and M is the second configuration parameter. This represents the number of time slots contained in each radio frame under the current subcarrier conditions.

[0168] In some embodiments, when the third indication information indicates that the first time slot is adjacent to the second time slot, the second time slot can be the next time slot after the first time slot; when the third indication information indicates that the first time slot and the second time slot are separated by P (an integer greater than 0) time slots, the second time slot is a time slot separated by P time slots from the first time slot.

[0169] The PDCCH that is repeatedly transmitted can be transmitted based on the inter-slot repetitive transmission method. The second time slot can include n1 and n1+1, where n1 satisfies the following formula:

[0170] Where t is the interval between the first time slot and the second time slot indicated by the third indication information, and the meanings of the other parameters are the same as those in the above formula, and will not be repeated here.

[0171] For example, taking a 15kHz subcarrier as an example, the configuration table is shown in Table 1. When using inter-slot repetition transmission, the network device can define a slot offset value (the value indicated by the third indication information) based on the additional search space, with the unit being a slot. The slot offset value is determined by the value of M. When M = 1 / 2, each slot includes two PDCCHs (occupying at least 4 symbols), and the remaining symbols can be used for time-domain resources to carry PDSCHs (occupying a maximum of 10 symbols). The requirements for the link cannot be met, therefore, it is not suitable for scenarios requiring coverage enhancement. When M = 1, if each slot includes 1 PDCCH, and the maximum value of the SSB index is 4 or 8, then the PDCCH will be retransmitted after 4 or 8 slots of transmission are completed, and the slot offset value must be greater than 4 or 8 slots. When M=2, if every 2 time slots include 1 PDCCH, and repeated transmission occurs in adjacent time slots, and the time slot offset value is configured to 1, then time slot overlap may exist in this scenario.

[0172] Table 1

[0173] The following explanation, with reference to Figure 9, addresses the situation where time slot overlap occurs when M=2.

[0174] Figure 9 is a schematic diagram of time slot overlap provided by an embodiment of this disclosure. Referring to Figure 9, it includes an original search space (searching for the first transmitted PDCCH) and an additional search space (searching for repeatedly transmitted PDCCH). When M is 2, every 2 time slots include 1 PDCCH. Therefore, a PDCCH can be transmitted in adjacent time slots. When the third indication information is 1 (time slot offset value is 1), time slot 1 or time slot 2 in the original search space includes the first PDCCH, and time slot 2 or time slot 3 in the additional search space includes the repeatedly transmitted PDCCH. Thus, 2 PDCCHs can be included in 3 time slots.

[0175] In some embodiments, the terminal device may receive PDCCHs repeatedly transmitted by the network device in a second time slot. For example, the second time slot may be a resource for repeatedly transmitting PDCCHs, based on which the network device repeatedly transmits PDCCHs, and the terminal device may also receive repeatedly transmitted PDCCHs based on this resource.

[0176] In some embodiments, after determining the second time slot, the terminal device can determine the symbol of the PDCCH to be repeatedly transmitted in the second time slot, and receive the repeatedly transmitted PDCCH according to the symbol. For example, the symbol of the repeatedly transmitted PDCCH is the same as the symbol of the first transmitted PDCCH. For example, if the resources of the first transmitted PDCCH are the first two symbols of the first time slot, then the resources of the repeatedly transmitted PDCCH are the first two symbols of the second time slot. It should be noted that the symbol of the PDCCH transmitted within the time slot can be determined based on a lookup table or based on any feasible implementation method (e.g., a pre-agreed symbol), and this disclosure does not limit this.

[0177] S805. The terminal device receives the PDSCH repeatedly transmitted by the network device according to the fourth instruction information of the repeatedly transmitted PDCCH.

[0178] Since the fourth indication information may include the first and second information, the terminal device receives the repeatedly transmitted PDSCH according to the fourth indication information in the following two ways:

[0179] Case 1: The fourth instruction includes the first instruction.

[0180] The first information may include the fifth instruction information, the first start symbol, and the first symbol length.

[0181] In some embodiments, when the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the terminal device can receive the repeatedly transmitted PDSCH according to the first time slot, the first start symbol, and the first symbol length. For example, the terminal device can determine the resources for repeated PDSCH transmission according to the first time slot, the first start symbol, and the first symbol length, and receive the repeatedly transmitted PDSCH according to the resources for repeated PDSCH transmission.

[0182] For example, when the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the terminal device can determine that the network device is repeatedly transmitting PDSCH in the first time slot. Therefore, the terminal device can receive the repeatedly transmitted PDSCH in the first time slot according to the first start symbol and the first symbol length.

[0183] For example, the fifth indication information indicates that the time slot for repeated transmission of PDSCH is the same as the time slot for repeated transmission of PDCCH. The time slot for repeated transmission of PDCCH is time slot 1, the first start symbol is the 3rd symbol, and the length of the first symbol is 10. The terminal device can receive the repeated transmission of PDSCH from the 3rd symbol to the 12th symbol of time slot 1.

[0184] The following example illustrates the process of a terminal device receiving PDCCH and PDSCH.

[0185] The operating frequency can be 2GHz, the subcarrier spacing is 15kHz, and the maximum SSB index is 8. Network devices perform downlink enhancement of broadcast messages based on repetitive transmission, utilizing the 1 bit reserved in the MIB message of the PBCH as a coverage enhancement indication; that is, this bit is sent as "1". The PBCH signal transmitted by the network device indicates a search space index of 2, an additional search space offset of 8, and a PDCCH length of 2 symbols. The configuration table refers to Table 13-11 in Section 13 of 38.213 of the 3rd Generation Partnership Project (3GPP) Technical Specification (TS).

[0186] When the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, and the SSB index received by the terminal device is 1, the terminal device can transmit PDSCH in the same time slot. The first two symbols of n0+1=4 receive the PDCCH transmitted for the first time, and the first two symbols of the additional listening slots n0+8=11 and n0+1+8=12 (i.e., slots 1 and 2 of the next frame) receive the PDCCH transmitted repeatedly.

[0187] After receiving two PDSCHs used for scheduling SIB1, the terminal device can obtain time domain indication information from the DCI of the PDSCH. The default time domain resource allocation scheme is A (time domain resource allocation schemes include A, B, and C, each time domain resource allocation scheme corresponds to a K, S, L table), and the CP type is normal CP (Default PDSCH time domain resource allocation A for normal CP), corresponding to Table 5.1.2.1.1-2 in 3GPP TS 38.214, with a row index of 1. Thus, the first starting symbol of the first PDSCH transmission and the retransmission of PDSCH is the 3rd symbol, and the length of the first symbol is 12 symbols. That is, the resources for the first PDSCH transmission are the 12 consecutive symbols starting from the 3rd symbol in time slots 3 and 4 (K=0, S=2, L=12), and the resources for the retransmission of PDSCH are the 12 consecutive symbols starting from the 3rd symbol in time slots 1 and 2 of the next frame. The terminal device can receive the first transmitted PDSCH in time slots 3 and 4, and receive the repeatedly transmitted PDSCH in time slots 1 and 2 of the next frame. The terminal device can merge and decode the two received PDSCHs.

[0188] In some embodiments, when the fifth indication information indicates that the time slot for retransmitting PDSCH is different from the time slot for retransmitting PDCCH, the terminal device can receive the retransmitted PDSCH based on the next N time slots of the first time slot, the first start symbol, and the first symbol length, where N is an integer greater than 0. For example, the terminal device can determine the resources for retransmitting PDSCH based on the next N time slots of the first time slot, the first start symbol, and the first symbol length, and receive the retransmitted PDSCH based on the resources for retransmitting PDSCH.

[0189] In some embodiments, N can be 1, that is, the terminal device can receive the repeatedly transmitted PDSCH in the next time slot of the first time slot, or in the adjacent time slot of the first time slot.

[0190] For example, when the fifth indication information indicates that the time slot for retransmitting PDSCH is different from the time slot for retransmitting PDCCH, and N is 1, the terminal device can determine that the network device retransmits PDSCH in the time slot adjacent to the first time slot. Therefore, the terminal device can receive the retransmitted PDSCH in the time slot adjacent to the first time slot according to the first start symbol and the first symbol length.

[0191] For example, the fifth indication information indicates that the time slot for repeated PDSCH transmission is different from the time slot for repeated PDCCH transmission, N is 1, the time slot for repeated PDCCH transmission is time slot 1, the next time slot of time slot 1 is time slot 2, the first start symbol is the third symbol, the first symbol length is 10, and the terminal device can receive the repeated PDSCH from the third symbol to the twelfth symbol of time slot 2.

[0192] The following example illustrates the process of a terminal device receiving PDCCH and PDSCH.

[0193] The operating frequency is 20 GHz, the subcarrier spacing is 120 kHz, and the network device performs downlink enhancement of broadcast messages based on repetitive transmission. It utilizes the 1 bit reserved in the MIB message of the PBCH as a coverage enhancement indicator, i.e., this bit is sent as "1". The search space index indicated in the PBCH signal sent by the network device is 13 (0 is 5, M is 2), the offset value of the extra search space is 1, and the PDCCH length is 2 symbols. Refer to Table 13-12 in Section 13 of 3GPP TS 38.213 for the configuration table.

[0194] When the fifth indication information indicates that the time slot for repeated PDSCH transmission is different from the time slot for repeated PDCCH transmission, and the terminal device receives an SSB index of 2, the terminal will transmit the PDSCH in the correct time slot. The first two symbols of n0+1=45 receive the first transmitted PDCCH, and the first two symbols of n0+1=45 and n0+1+4=46 receive the retransmitted PDCCH.

[0195] After receiving two PDSCHs used for scheduling SIB1, the terminal device can obtain the time domain indication information from the DCI of the PDSCH. The default time domain resource allocation scheme is B, and the CP type is regular CP (Default PDSCH time domain resource allocation B), corresponding to Table 5.1.2.1.1-2 in 3GPP TS 38.214, with a row index of 6. Thus, the first starting symbol of the first PDSCH transmission and the repeated PDSCH transmissions is the 3rd symbol, and the length of the first symbol is 2 symbols. That is, the resources for the first PDSCH transmission are the two consecutive symbols starting from the 3rd symbol in time slots 44 and 45 (K=0, S=2, L=2), and the resources for the repeated PDSCH transmissions are the two consecutive symbols starting from the 3rd symbol in time slots 45 and 46. The terminal device can receive the first transmitted PDSCH in time slots 44 and 45, and receive the repeatedly transmitted PDSCH in time slots 45 and 46. The terminal device can merge and decode the two received PDSCHs.

[0196] In some embodiments, the network device can notify the terminal device whether to retransmit the PDCCH using 1 bit of information in the PBCH. If the network device does not retransmit the PDCCH, it transmits the PDCCH for scheduling SIB1 according to the table configured in the existing protocol, and transmits the PDSCH carrying SIB1 according to the symbol indicated by the time domain indication information in the DCI. If the network device retransmits the PDCCH, it transmits the PDCCH for scheduling SIB1 twice according to the table configured in the existing protocol and the additional search space configuration, and transmits two PDSCHs carrying SIB1 according to the symbol indicated by the time domain indication information in the DCI of the two PDCCHs respectively.

[0197] In some embodiments, the terminal device can receive the PBCH signal and determine the location of the PDCCH. For terminal devices that cannot recognize the coverage enhancement indication (traditional terminal devices), the PDCCH for scheduling SIB1 can be received according to the existing protocol configuration table, and the PDSCH carrying SIB1 can be received according to the symbol indicated by the time domain indication information in the DCI. For terminal devices that can recognize the coverage enhancement indication, if the network device does not indicate repeated transmission of PDCCH, the PDCCH for scheduling SIB1 is received according to the existing protocol configuration table, and the PDSCH carrying SIB1 is received according to the symbol indicated by the time domain indication information in the DCI; if the network device indicates repeated transmission of PDCCH, the PDCCH for scheduling SIB1 is received twice according to the existing protocol configuration table and additional search space configuration, and two PDSCHs carrying SIB1 are received according to the symbol indicated by the time domain indication information in the DCI.

[0198] Scenario 2: The fourth instruction includes the second instruction.

[0199] The second information may include the sixth instruction information, the second start symbol, and the second symbol length.

[0200] In some embodiments, the terminal device may determine a fourth time slot based on the sixth indication information and the third time slot, and receive repeatedly transmitted PDSCH according to the fourth time slot, the second start symbol, and the second symbol length. For example, the terminal device may determine the time slot for receiving repeatedly transmitted PDSCH based on the time slot interval between the first transmitted PDSCH indicated by the sixth indication information and the time slot for repeatedly transmitted PDSCH, and receive repeatedly transmitted PDSCH in that time slot according to the second start symbol and the second symbol length.

[0201] For example, when the sixth indication information indicates that the time slot for the first PDSCH transmission is 2 time slots apart from the time slot for the repeated PDSCH transmission, and the time slot for the first PDSCH transmission is the first time slot, the terminal device can determine that the network device repeatedly transmits PDSCH in the fourth time slot. Therefore, the terminal device can receive the repeatedly transmitted PDSCH in the fourth time slot according to the second start symbol and the second symbol length.

[0202] For example, when the sixth indication information indicates that the time slot of the first PDSCH transmission is 2 time slots apart from the time slot of the repeated PDSCH transmission, the time slot of the first PDSCH transmission is the first time slot, the second start symbol is the third symbol, and the length of the second symbol is 10, the terminal device can receive the repeated PDSCH in the third to twelfth symbols of the fourth time slot.

[0203] The following example illustrates the process of a terminal device receiving PDCCH and PDSCH.

[0204] The operating frequency is 2 GHz, the subcarrier spacing is 15 kHz, and the maximum SSB index is 8. The network device performs downlink enhancement of broadcast messages based on a repetitive transmission method, utilizing the 1 bit reserved in the MIB message of the PBCH as a coverage enhancement indication; that is, this bit is sent when it is "1". The PBCH signal transmitted by the network device indicates a search space index of 2, an additional search space offset of 8, and a PDCCH length of 3 symbols. Refer to Table 13-11 in Section 13 of 3GPP TS 38.213 for the configuration table.

[0205] The terminal device receives an SSB index of 1, and the terminal device is in the time slot. The first three symbols of n0+1=4 receive the PDCCH transmitted for the first time, and the first three symbols of the additional listening slots n0+8=11 and n0+1+8=12 (i.e., the next frame slots 1 and 2) receive the PDCCH transmitted repeatedly.

[0206] After receiving two PDSCHs used for scheduling SIB1, the terminal device can obtain the time domain indication information from the DCI of the PDSCH. The default time domain resource allocation scheme is A, and the CP type is normal CP (Default PDSCH time domain resource allocation A for normal CP), corresponding to Table 5.1.2.1.1-2 in 3GPP TS 38.214, where the row index is 1. Thus, the first starting symbol of the first PDSCH transmission and the repeated PDSCH transmissions is the 4th symbol, and the second symbol length is 11 symbols. That is, the resource of the first PDSCH transmission is the 11 consecutive symbols (K0=0, S=3, L=11) starting from the 4th symbol in the same time slot of the last PDSCH transmission. If the sixth indication information uses a 3-bit indication with a value of 6, then the resources for repeated PDSCH transmission are the 6 time slots after the time slot of the first PDSCH transmission, and 11 consecutive symbols starting from the 4th symbol (K=0, S=3, L=11, K offset=6). The terminal device can merge and decode the two received PDSCHs.

[0207] In some embodiments, the network device can notify the terminal device whether to retransmit the PDCCH using 1 bit of information in the PBCH. If the network device does not retransmit the PDCCH, it transmits the PDCCH for scheduling SIB1 according to the table configured in the existing protocol, and transmits the PDSCH carrying SIB1 according to the symbol indicated by the time domain indication information in the DCI. If the network device retransmits the PDCCH, it transmits the PDCCH for scheduling SIB1 twice according to the table configured in the existing protocol and the additional search space configuration, and transmits the PDSCH carrying SIB1 twice, respectively, according to the symbol indicated by the time domain indication information in the DCI and based on the additional time domain offset indication information (K offset) configured in the DCI.

[0208] In some embodiments, after receiving the PBCH signal, the terminal device can determine the location of the PDCCH. For terminal devices that cannot recognize the coverage enhancement indication (traditional terminal devices), the PDCCH for scheduling SIB1 can be received according to the existing protocol configuration table, and the PDSCH carrying SIB1 can be received according to the symbol indicated by the time domain indication information in the DCI. For terminal devices that can recognize the coverage enhancement indication, if the network device does not indicate repeated transmission of PDCCH, the PDCCH for scheduling SIB1 is received according to the existing protocol configuration table, and the PDSCH carrying SIB1 is received according to the symbol indicated by the time domain indication information in the DCI; if the network device indicates repeated transmission of PDCCH, the PDCCH for scheduling SIB1 is received twice according to the existing protocol configuration table and additional search space configuration, and the location of the PDSCH for repeated transmission is determined according to the symbol indicated by the time domain indication information in the DCI and the sixth indication information (K offset), and the corresponding PDSCH carrying SIB1 is received twice.

[0209] The following example illustrates the process of traditional terminal devices receiving PDCCH and PDSCH.

[0210] The operating frequency is 2 GHz, the subcarrier spacing is 15 kHz, and the maximum SSB index is 4. The network device performs downlink enhancement for broadcast messages based on a repetitive transmission method, utilizing the 1 bit reserved in the MIB message of the PBCH as a coverage enhancement indication; that is, this bit is sent as "1". The PBCH signal transmitted by the network device indicates a search space index of 2, an additional search space offset of 4, and a PDCCH length of 2 symbols. Refer to Table 13-11 in Section 13 of 3GPP TS 38.213 for the configuration table.

[0211] When the SSB index received by the traditional terminal device is 1, the traditional terminal device in the time slot The first two symbols of n0+1=4 receive the PDSCH used to schedule SIB1, and after listening to the PDSCH, obtain the time domain indication information in the DCI. The default time domain resource allocation scheme is A, and the CP type is normal CP (Default PDSCH time domain resource allocation A for normal CP), corresponding to Table 5.1.2.1.1-2 in 3GPP TS 38.214, with a row index of 1. In this way, the resource for transmitting PDSCH can be 12 consecutive symbols starting from the 3rd symbol in the same time slot as the PDCCH transmission. Traditional terminal equipment can receive and decode the PDSCH carrying SIB1 based on this resource.

[0212] It should be noted that steps S801-S805 only describe the process of receiving repeatedly transmitted PDCCH and PDSCH, and do not limit the order of execution.

[0213] This disclosure provides a method for receiving repeatedly transmitted PDCCH and PDSCH. When a first indication indicates repeated PDCCH transmission, a terminal device receives the repeatedly transmitted PDCCH from the network device according to a second indication. When a fifth indication indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the terminal device can receive the repeatedly transmitted PDSCH according to a first time slot, a first start symbol, and a first symbol length. When the fifth indication indicates that the time slot for repeated PDSCH transmission is different from the time slot for repeated PDCCH transmission, the terminal device can receive the repeatedly transmitted PDSCH according to the next N time slots of the first time slot, a first start symbol, and a first symbol length. Alternatively, the terminal device can determine a fourth time slot based on a sixth indication and a third time slot, and receive the repeatedly transmitted PDSCH according to the fourth time slot, a second start symbol, and a second symbol length. Since the PDCCH can include information indicating the repeated transmission of the PDSCH, the repeated transmission of the PDSCH can be bound to the repeated transmission of the PDCCH. The network device does not need to send additional information indicating the repeated transmission of the PDSCH to the terminal device, thus saving signaling overhead and communication resources.

[0214] Figure 10 is a schematic diagram of a repeating transmission device provided in an embodiment of this disclosure. Referring to Figure 10, the repeating transmission device 1000 includes a receiving module 1001, wherein:

[0215] The receiving module 1001 is used to receive a PBCH signal, which includes information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by PDCCH is associated with repeated transmission of PDCCH.

[0216] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0217] First indication information, the first indication information is used to indicate whether to retransmit PDCCH;

[0218] The second indication information is used to indicate the resources for repeated transmission of PDCCH.

[0219] In some embodiments, the first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following:

[0220] The existing bits of PBCH;

[0221] The newly added bits in PBCH;

[0222] PBCH spare bits.

[0223] In some embodiments, the second indication information includes at least one of the following:

[0224] SSB index;

[0225] The first configuration parameter is used to determine the starting timeslot for transmitting the PDCCH.

[0226] The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH.

[0227] Parameters determined based on subcarrier spacing;

[0228] The number of time slots contained in each radio frame under the current subcarrier conditions;

[0229] The third indication information indicates the interval between the first time slot and the second time slot. The first time slot is the time slot for the first transmission of PDCCH, and the second time slot is the time slot for repeated transmission of PDCCH.

[0230] In some embodiments, the PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following:

[0231] The first information includes the fifth indication information, the first start symbol, and the first symbol length. The fifth indication information is used to indicate whether the time slot of the repeated transmission of PDSCH is the same as the time slot of the repeated transmission of PDCCH.

[0232] The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of PDSCH, and the fourth time slot is the time slot for repeated transmission of PDSCH.

[0233] In some embodiments, the sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

[0234] In some embodiments, the receiving module 1001 is further configured to:

[0235] Based on the PBCH signal, receive the repeatedly transmitted PDCCH and PDSCH.

[0236] In some embodiments, the receiving module 1001 is used for:

[0237] If the first indication information indicates that the PDCCH should be transmitted repeatedly, the repeatedly transmitted PDCCH should be received according to the second indication information.

[0238] Receive the repeatedly transmitted PDSCH according to the fourth instruction information of the repeatedly transmitted PDCCH.

[0239] In some embodiments, the receiving module 1001 is used for:

[0240] The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions.

[0241] The second time slot is determined based on the third instruction information and the first time slot;

[0242] According to the second time slot, receive the repeatedly transmitted PDCCH.

[0243] In some embodiments, the receiving module 1001 is used for:

[0244] If the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the repeatedly transmitted PDSCH is received according to the first time slot, the first start symbol, and the first symbol length.

[0245] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is different from the time slot for repeated PDCCH transmission, the repeated PDSCH is received according to the next N time slots of the first time slot, the first start symbol, and the first symbol length, where N is an integer greater than 0.

[0246] In some embodiments, the receiving module 1001 is used for:

[0247] Based on the sixth instruction information and the third time slot, the fourth time slot is determined;

[0248] Based on the fourth time slot, the second start symbol, and the second symbol length, receive the PDSCH that is repeatedly transmitted.

[0249] Figure 11 is a schematic diagram of another repeating transmission device provided in an embodiment of this disclosure. Referring to Figure 11, the repeating transmission device 1100 includes a transmitting module 1101, wherein:

[0250] The transmitting module 1101 is used to transmit a PBCH signal, which includes information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by PDCCH is associated with repeated transmission of PDCCH.

[0251] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0252] First indication information, the first indication information is used to indicate whether to retransmit PDCCH;

[0253] The second indication information is used to indicate the resources for repeated transmission of PDCCH.

[0254] In some embodiments, the first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following:

[0255] The existing bits of PBCH;

[0256] The newly added bits in PBCH;

[0257] PBCH spare bits.

[0258] In some embodiments, the second indication information includes at least one of the following:

[0259] SSB index;

[0260] The first configuration parameter is used to determine the starting timeslot for transmitting the PDCCH.

[0261] The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH.

[0262] Parameters determined based on subcarrier spacing;

[0263] The number of time slots contained in each radio frame under the current subcarrier conditions;

[0264] The third indication information indicates the interval between the first time slot and the second time slot. The first time slot is the time slot for the first transmission of PDCCH, and the second time slot is the time slot for repeated transmission of PDCCH.

[0265] In some embodiments, the PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following:

[0266] The first information includes the fifth indication information, the first start symbol, and the first symbol length. The fifth indication information is used to indicate whether the time slot of the repeated transmission of PDSCH is the same as the time slot of the repeated transmission of PDCCH.

[0267] The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of PDSCH, and the fourth time slot is the time slot for repeated transmission of PDSCH.

[0268] In some embodiments, the sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

[0269] In some embodiments, the sending module 1101 is further configured to:

[0270] Based on the PBCH signal, PDCCH and PDSCH are repeatedly transmitted.

[0271] In some embodiments, the sending module 1101 is configured to:

[0272] If the first indication information indicates that the PDCCH should be transmitted repeatedly, the PDCCH should be transmitted repeatedly according to the second indication information;

[0273] Based on the fourth instruction information of the repeatedly transmitted PDCCH, the PDSCH is repeatedly transmitted.

[0274] In some embodiments, the sending module 1101 is configured to:

[0275] The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions.

[0276] The second time slot is determined based on the third instruction information and the first time slot;

[0277] The PDCCH is transmitted repeatedly according to the second time slot.

[0278] In some embodiments, the sending module 1101 is configured to:

[0279] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is the same as the time slot for repeated PDCCH transmission, then PDSCH is repeatedly transmitted according to the first time slot, the first start symbol, and the first symbol length.

[0280] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is different from the time slot for repeated PDCCH transmission, PDSCH is repeatedly transmitted according to the next N time slots of the first time slot, the first start symbol, and the length of the first symbol, where N is an integer greater than 0.

[0281] In some embodiments, the sending module 1101 is configured to:

[0282] Based on the sixth instruction information and the third time slot, the fourth time slot is determined;

[0283] The PDSCH is repeatedly transmitted based on the fourth time slot, the second start symbol, and the second symbol length.

[0284] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0285] If the aforementioned integrated units are implemented as software functional units and sold or used as independent products, they can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0286] It should be noted that the apparatus provided in this disclosure can implement all the method steps implemented in the above method embodiments and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described again here.

[0287] Figure 12 is a schematic diagram of a terminal device provided in an embodiment of this disclosure. Referring to Figure 12, the terminal device includes a memory 1210, a transceiver 1220, and a processor 1230.

[0288] Memory 1210 is used to store computer programs;

[0289] Transceiver 1220 is used to send and receive data under the control of the processor;

[0290] Processor 1230 is used to read computer programs from memory and perform the following operations:

[0291] Receive the PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0292] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0293] First indication information, the first indication information is used to indicate whether to retransmit PDCCH;

[0294] The second indication information is used to indicate the resources for repeated transmission of PDCCH.

[0295] In some embodiments, the first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following:

[0296] The existing bits of PBCH;

[0297] The newly added bits in PBCH;

[0298] PBCH spare bits.

[0299] In some embodiments, the second indication information includes at least one of the following:

[0300] SSB index;

[0301] The first configuration parameter is used to determine the starting timeslot for transmitting the PDCCH.

[0302] The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH.

[0303] Parameters determined based on subcarrier spacing;

[0304] The number of time slots contained in each radio frame under the current subcarrier conditions;

[0305] The third indication information indicates the interval between the first time slot and the second time slot. The first time slot is the time slot for the first transmission of PDCCH, and the second time slot is the time slot for repeated transmission of PDCCH.

[0306] In some embodiments, the PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following:

[0307] The first information includes the fifth indication information, the first start symbol, and the first symbol length. The fifth indication information is used to indicate whether the time slot of the repeated transmission of PDSCH is the same as the time slot of the repeated transmission of PDCCH.

[0308] The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of PDSCH, and the fourth time slot is the time slot for repeated transmission of PDSCH.

[0309] In some embodiments, the sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

[0310] In some embodiments, the processor is further configured to:

[0311] Based on the PBCH signal, receive the repeatedly transmitted PDCCH and PDSCH.

[0312] In some embodiments, receiving repeatedly transmitted PDCCH and PDSCH according to the PBCH signal includes:

[0313] If the first indication information indicates that the PDCCH should be transmitted repeatedly, the repeatedly transmitted PDCCH should be received according to the second indication information.

[0314] Receive the repeatedly transmitted PDSCH according to the fourth instruction information of the repeatedly transmitted PDCCH.

[0315] In some embodiments, receiving repeatedly transmitted PDCCHs according to second indication information includes:

[0316] The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions.

[0317] The second time slot is determined based on the third instruction information and the first time slot;

[0318] According to the second time slot, receive the repeatedly transmitted PDCCH.

[0319] In some embodiments, where the fourth indication information includes the first information; receiving a repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes:

[0320] If the fifth indication information indicates that the time slot for repeated PDSCH transmission is the same as the time slot for repeated PDCCH transmission, the repeatedly transmitted PDSCH is received according to the first time slot, the first start symbol, and the first symbol length.

[0321] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is different from the time slot for repeated PDCCH transmission, the repeated PDSCH is received according to the next N time slots of the first time slot, the first start symbol, and the first symbol length, where N is an integer greater than 0.

[0322] In some embodiments, where the fourth indication information includes the second information; receiving a repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes:

[0323] Based on the sixth instruction information and the third time slot, the fourth time slot is determined;

[0324] Based on the fourth time slot, the second start symbol, and the second symbol length, receive the PDSCH that is repeatedly transmitted.

[0325] In some embodiments, the terminal device may further include a user interface 1240. For different terminal devices, the user interface 1240 may also be an interface that can connect to external or internal devices, including but not limited to keypad, display, speaker, microphone, joystick, etc.

[0326] In Figure 12, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1230 and memory represented by memory 1210. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1220 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 1230 is responsible for managing the bus architecture and general processing, and memory 1210 may store data used by processor 1230 during operation.

[0327] Optionally, the processor 1230 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0328] The processor 1230 executes any of the methods provided in the embodiments of this disclosure by calling a computer program stored in the memory 1210, according to the obtained executable instructions. The processor 1230 and the memory 1210 may also be physically separated.

[0329] It should be noted that the physical device provided in this disclosure can implement all the method steps implemented by the physical device in the above method embodiments and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described again here.

[0330] Figure 13 is a schematic diagram of a network device provided in an embodiment of this disclosure. Referring to Figure 13, the network device includes a memory 1310, a transceiver 1320, and a processor 1330.

[0331] Memory 1310 is used to store computer programs;

[0332] Transceiver 1320 is used to send and receive data under the control of the processor;

[0333] Processor 1330 is used to read computer programs from memory and perform the following operations:

[0334] Send a PBCH signal, which includes information indicating the retransmission of PDCCH, wherein the retransmission of PDSCH scheduled by PDCCH is associated with the retransmission of PDCCH.

[0335] In some embodiments, the information instructing the PDCCH to be retransmitted includes at least one of the following:

[0336] First indication information, the first indication information is used to indicate whether to retransmit PDCCH;

[0337] The second indication information is used to indicate the resources for repeated transmission of PDCCH.

[0338] In some embodiments, the first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following:

[0339] The existing bits of PBCH;

[0340] The newly added bits in PBCH;

[0341] PBCH spare bits.

[0342] In some embodiments, the second indication information includes at least one of the following:

[0343] SSB index;

[0344] The first configuration parameter is used to determine the starting timeslot for transmitting the PDCCH.

[0345] The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH.

[0346] Parameters determined based on subcarrier spacing;

[0347] The number of time slots contained in each radio frame under the current subcarrier conditions;

[0348] The third indication information indicates the interval between the first time slot and the second time slot. The first time slot is the time slot for the first transmission of PDCCH, and the second time slot is the time slot for repeated transmission of PDCCH.

[0349] In some embodiments, the PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following:

[0350] The first information includes the fifth indication information, the first start symbol, and the first symbol length. The fifth indication information is used to indicate whether the time slot of the repeated transmission of PDSCH is the same as the time slot of the repeated transmission of PDCCH.

[0351] The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of PDSCH, and the fourth time slot is the time slot for repeated transmission of PDSCH.

[0352] In some embodiments, the sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

[0353] In some embodiments, the processor is further configured to:

[0354] Based on the PBCH signal, PDCCH and PDSCH are repeatedly transmitted.

[0355] In some embodiments, the PDCCH and PDSCH are repeatedly transmitted according to the PBCH signal, including:

[0356] If the first indication information indicates that the PDCCH should be transmitted repeatedly, the PDCCH should be transmitted repeatedly according to the second indication information;

[0357] Based on the fourth instruction information of the repeatedly transmitted PDCCH, the PDSCH is repeatedly transmitted.

[0358] In some embodiments, repeatedly transmitting the PDCCH according to the second indication information includes:

[0359] The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions.

[0360] The second time slot is determined based on the third instruction information and the first time slot;

[0361] The PDCCH is transmitted repeatedly according to the second time slot.

[0362] In some embodiments, where the fourth indication information includes the first information; retransmitting the PDSCH according to the fourth indication information of the retransmitted PDCCH includes:

[0363] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is the same as the time slot for repeated PDCCH transmission, then PDSCH is repeatedly transmitted according to the first time slot, the first start symbol, and the first symbol length.

[0364] If the time slot for repeated PDSCH transmission indicated by the fifth indication information is different from the time slot for repeated PDCCH transmission, PDSCH is repeatedly transmitted according to the next N time slots of the first time slot, the first start symbol, and the length of the first symbol, where N is an integer greater than 0.

[0365] In some embodiments, where the fourth indication information includes the second information; retransmitting the PDSCH according to the fourth indication information of the retransmitted PDCCH includes:

[0366] Based on the sixth instruction information and the third time slot, the fourth time slot is determined;

[0367] The PDSCH is repeatedly transmitted based on the fourth time slot, the second start symbol, and the second symbol length.

[0368] This disclosure also provides a processor-readable storage medium storing a computer program for causing the processor to perform any of the methods described in the above embodiments.

[0369] Processor-readable storage media can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0370] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements any of the methods described in the above embodiments.

[0371] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0372] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0373] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0374] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0375] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A method for repeated transmission, wherein, Applied to a terminal device, the method includes: The Physical Broadcast Channel (PBCH) signal is received, the PBCH signal including information indicating repeated transmission of the Downlink Physical Control Channel (PDCCH), wherein repeated transmission of the Downlink Physical Shared Channel (PDSCH) scheduled by the PDCCH is associated with repeated transmission of the PDCCH.

2. The method according to claim 1, wherein, The information indicating repeated transmission of the PDCCH includes at least one of the following: First indication information, the first indication information is used to indicate whether the PDCCH should be transmitted repeatedly; The second indication information is used to indicate the resources for repeated transmission of the PDCCH.

3. The method according to claim 2, wherein, The first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following: The existing bits of the PBCH; The newly added bits in the PBCH; The spare bits of the PBCH.

4. The method according to claim 2, wherein, The second instruction information includes at least one of the following: Index of the synchronization signal block SSB; The first configuration parameter is used to determine the starting time slot for transmitting the PDCCH; The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH; Parameters determined based on subcarrier spacing; The number of time slots contained in each radio frame under the current subcarrier conditions; The third indication information indicates the interval between the first time slot and the second time slot, or the third indication information indicates the offset of the second time slot relative to the first time slot; The first time slot is the time slot for the first transmission of the PDCCH, and the second time slot is the time slot for repeated transmission of the PDCCH.

5. The method according to claim 4, wherein, When the third indication information indicates the interval between the first time slot and the second time slot, when the third indication information is 0, the first time slot and the second time slot are adjacent. Alternatively, if the third indication information indicates an offset of the second time slot compared to the first time slot, then when the third indication information is 1, the first time slot is adjacent to the second time slot.

6. The method according to claim 1, wherein, The PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following: The first information includes a fifth indication information, a first start symbol, and a first symbol length. The fifth indication information is used to indicate whether the time slot for repeatedly transmitting the PDSCH is the same as the time slot for repeatedly transmitting the PDCCH. The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of the PDSCH, and the fourth time slot is the time slot for repeated transmission of the PDSCH.

7. The method according to claim 6, wherein, The sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

8. The method according to any one of claims 1-7, wherein, The method further includes: Based on the PBCH signal, the repeatedly transmitted PDCCH and PDSCH are received.

9. The method according to claim 8, wherein, Receiving repeatedly transmitted PDCCH and PDSCH according to the PBCH signal includes: If the first indication information indicates that the PDCCH should be transmitted repeatedly, the repeatedly transmitted PDCCH shall be received according to the second indication information. The PDSCH is received according to the fourth indication information of the repeatedly transmitted PDCCH.

10. The method according to claim 9, wherein, Receiving the repeatedly transmitted PDCCH according to the second instruction information includes: The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions. The second time slot is determined based on the third indication information and the first time slot; According to the second time slot, the PDCCH is received in repeated transmissions.

11. The method according to claim 9, wherein, When the fourth indication information includes the first information; receiving the repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes: If the fifth indication information indicates that the time slot for retransmitting the PDSCH is the same as the time slot for retransmitting the PDCCH, the retransmitted PDSCH is received according to the first time slot, the first start symbol, and the first symbol length. If the time slot for retransmitting the PDSCH indicated by the fifth indication information is different from the time slot for retransmitting the PDCCH, the retransmitted PDSCH is received according to the next N time slots of the first time slot, the first start symbol, and the length of the first symbol, where N is an integer greater than 0.

12. The method according to claim 9, wherein, When the fourth indication information includes the second information; receiving the repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes: Based on the sixth instruction information and the third time slot, the fourth time slot is determined; The PDSCH is received based on the fourth time slot, the second start symbol, and the second symbol length.

13. A method for repeated transmission, wherein, Applied to network devices, the method includes: A PBCH signal is sent, the PBCH signal including information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by the PDCCH is associated with repeated transmission of the PDCCH.

14. The method according to claim 13, wherein, The information indicating repeated transmission of the PDCCH includes at least one of the following: First indication information, the first indication information is used to indicate whether the PDCCH should be transmitted repeatedly; The second indication information is used to indicate the resources for repeated transmission of the PDCCH.

15. The method according to claim 14, wherein, The first indication information is based on the bit indication of the PBCH, wherein the bits in the PBCH are at least one of the following: The existing bits of the PBCH; The newly added bits in the PBCH; The spare bits of the PBCH.

16. The method of claim 14, wherein, The second instruction information includes at least one of the following: SSB index; The first configuration parameter is used to determine the starting time slot for transmitting the PDCCH; The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH; Parameters determined based on subcarrier spacing; The number of time slots contained in each radio frame under the current subcarrier conditions; The third indication information indicates the interval between the first time slot and the second time slot, or the third indication information indicates the offset of the second time slot relative to the first time slot; The first time slot is the time slot for the first transmission of the PDCCH, and the second time slot is the time slot for repeated transmission of the PDCCH.

17. The method according to claim 16, wherein, When the third indication information indicates the interval between the first time slot and the second time slot, when the third indication information is 0, the first time slot and the second time slot are adjacent. Alternatively, if the third indication information indicates an offset of the second time slot compared to the first time slot, then when the third indication information is 1, the first time slot is adjacent to the second time slot.

18. The method according to claim 13, wherein, The PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following: The first information includes a fifth indication information, a first start symbol, and a first symbol length. The fifth indication information is used to indicate whether the time slot for repeatedly transmitting the PDSCH is the same as the time slot for repeatedly transmitting the PDCCH. The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of the PDSCH, and the fourth time slot is the time slot for repeated transmission of the PDSCH.

19. The method according to claim 18, wherein, The sixth indication information is based on the reserved bits indication of the downlink control information (DCI).

20. The method according to any one of claims 13-19, wherein, The method further includes: Based on the PBCH signal, the PDCCH and the PDSCH are repeatedly transmitted.

21. The method according to claim 20, wherein, Based on the PBCH signal, the PDCCH and PDSCH are repeatedly transmitted, including: If the first indication information indicates that the PDCCH should be transmitted repeatedly, the PDCCH should be transmitted repeatedly according to the second indication information. The PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH.

22. The method according to claim 21, wherein, According to the second instruction information, the PDCCH is repeatedly transmitted, including: The first time slot is determined based on the SSB index, the first configuration parameter, the second configuration parameter, the parameter determined based on the subcarrier spacing, and the number of time slots contained in each radio frame under the current subcarrier conditions. The second time slot is determined based on the third indication information and the first time slot; The PDCCH is repeatedly transmitted according to the second time slot.

23. The method according to claim 21, wherein, When the fourth indication information includes the first information; the PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH, including: If the fifth indication information indicates that the time slot for retransmitting the PDSCH is the same as the time slot for retransmitting the PDCCH, the PDSCH is retransmitted according to the first time slot, the first start symbol, and the first symbol length. If the time slot for retransmitting the PDSCH indicated by the fifth indication information is different from the time slot for retransmitting the PDCCH, the PDSCH is retransmitted according to the next N time slots of the first time slot, the first start symbol, and the length of the first symbol, where N is an integer greater than 0.

24. The method according to claim 21, wherein, When the fourth indication information includes the second information; the PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH, including: Based on the sixth instruction information and the third time slot, the fourth time slot is determined; The PDSCH is repeatedly transmitted according to the fourth time slot, the second start symbol, and the second symbol length.

25. A repetitive transmission device, wherein, Applied to terminal devices, including a receiving module, wherein: The receiving module is configured to receive a PBCH signal, the PBCH signal including information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by the PDCCH is associated with repeated transmission of the PDCCH.

26. A repetitive transmission device, wherein, Applied to network devices, including a transmitting module, wherein: The transmitting module is used to transmit a PBCH signal, the PBCH signal including information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by the PDCCH is associated with repeated transmission of the PDCCH.

27. A terminal device, wherein, Includes memory, transceiver, and processor: The memory is used to store computer programs; The transceiver is used to send and receive data under the control of the processor; The processor is configured to read the computer program from the memory and perform the following operations: Receive a PBCH signal, the PBCH signal including information indicating PDCCH retransmission, wherein the retransmission of PDSCH scheduled by the PDCCH is associated with the retransmission of the PDCCH.

28. The terminal device according to claim 27, wherein, The information indicating repeated transmission of the PDCCH includes at least one of the following: First indication information, the first indication information is used to indicate whether the PDCCH should be transmitted repeatedly; The second indication information is used to indicate the resources for repeated transmission of the PDCCH; The second instruction information includes at least one of the following: SSB index; The first configuration parameter is used to determine the starting time slot for transmitting the PDCCH; The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH; Parameters determined based on subcarrier spacing; The number of time slots contained in each radio frame under the current subcarrier conditions; The third indication information indicates the interval between the first time slot and the second time slot, or the third indication information indicates the offset of the second time slot relative to the first time slot; The first time slot is the time slot for the first transmission of the PDCCH, and the second time slot is the time slot for repeated transmission of the PDCCH.

29. The terminal device according to claim 28, wherein, When the third indication information indicates the interval between the first time slot and the second time slot, when the third indication information is 0, the first time slot and the second time slot are adjacent. Alternatively, if the third indication information indicates an offset of the second time slot compared to the first time slot, then when the third indication information is 1, the first time slot is adjacent to the second time slot.

30. The terminal device according to claim 28, wherein, The PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following: The first information includes a fifth indication information, a first start symbol, and a first symbol length. The fifth indication information is used to indicate whether the time slot for repeatedly transmitting the PDSCH is the same as the time slot for repeatedly transmitting the PDCCH. The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of the PDSCH, and the fourth time slot is the time slot for repeated transmission of the PDSCH.

31. The terminal device according to any one of claims 28-30, wherein, The processor is also used for: If the first indication information indicates that the PDCCH should be transmitted repeatedly, the repeatedly transmitted PDCCH shall be received according to the second indication information. The PDSCH is received according to the fourth indication information of the repeatedly transmitted PDCCH.

32. The terminal device according to claim 31, wherein, When the fourth indication information includes the first information; receiving the repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes: If the fifth indication information indicates that the time slot for retransmitting the PDSCH is the same as the time slot for retransmitting the PDCCH, the retransmitted PDSCH is received according to the first time slot, the first start symbol, and the first symbol length. When the fifth indication information indicates that the time slot for retransmitting the PDSCH is different from the time slot for retransmitting the PDCCH, the retransmitted PDSCH is received according to the next N time slots of the first time slot, the first start symbol, and the first symbol length, where N is an integer greater than 0; When the fourth indication information includes the second information; receiving the repeatedly transmitted PDSCH according to the fourth indication information of the repeatedly transmitted PDCCH includes: Based on the sixth instruction information and the third time slot, the fourth time slot is determined; The PDSCH is received based on the fourth time slot, the second start symbol, and the second symbol length.

33. A network device, wherein, Includes memory, transceiver, and processor: The memory is used to store computer programs; The transceiver is used to send and receive data under the control of the processor; The processor is configured to read the computer program from the memory and perform the following operations: A PBCH signal is sent, the PBCH signal including information indicating repeated transmission of PDCCH, wherein repeated transmission of PDSCH scheduled by the PDCCH is associated with repeated transmission of the PDCCH.

34. The network device according to claim 33, wherein, The information indicating repeated transmission of the PDCCH includes at least one of the following: First indication information, the first indication information is used to indicate whether the PDCCH should be transmitted repeatedly; The second indication information is used to indicate the resources for repeated transmission of the PDCCH; The second instruction information includes at least one of the following: SSB index; The first configuration parameter is used to determine the starting time slot for transmitting the PDCCH; The second configuration parameter is used to determine the number of time slots required to transmit one PDCCH; Parameters determined based on subcarrier spacing; The number of time slots contained in each radio frame under the current subcarrier conditions; The third indication information indicates the interval between the first time slot and the second time slot, or the third indication information indicates the offset of the second time slot relative to the first time slot; The first time slot is the time slot for the first transmission of the PDCCH, and the second time slot is the time slot for repeated transmission of the PDCCH.

35. The network device according to claim 34, wherein, When the third indication information indicates the interval between the first time slot and the second time slot, when the third indication information is 0, the first time slot and the second time slot are adjacent. Alternatively, if the third indication information indicates an offset of the second time slot compared to the first time slot, then when the third indication information is 1, the first time slot is adjacent to the second time slot.

36. The network device according to claim 33, wherein, The PDCCH includes fourth indication information, which is used to indicate resources for repeated transmission of the PDSCH. The fourth indication information includes at least one of the following: The first information includes a fifth indication information, a first start symbol, and a first symbol length. The fifth indication information is used to indicate whether the time slot for repeatedly transmitting the PDSCH is the same as the time slot for repeatedly transmitting the PDCCH. The second information includes a sixth indication information, a second start symbol, and a second symbol length. The sixth indication information indicates the interval between the third and fourth time slots. The third time slot is the time slot for the first transmission of the PDSCH, and the fourth time slot is the time slot for repeated transmission of the PDSCH.

37. The network device according to any one of claims 33-36, wherein, The processor is also used for: If the first indication information indicates that the PDCCH should be transmitted repeatedly, the PDCCH should be transmitted repeatedly according to the second indication information. The PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH.

38. The network device according to claim 37, wherein, When the fourth indication information includes the first information; the PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH, including: If the fifth indication information indicates that the time slot for retransmitting the PDSCH is the same as the time slot for retransmitting the PDCCH, the PDSCH is retransmitted according to the first time slot, the first start symbol, and the first symbol length. If the time slot for retransmitting the PDSCH indicated by the fifth indication information is different from the time slot for retransmitting the PDCCH, the PDSCH is retransmitted according to the next N time slots of the first time slot, the first start symbol, and the first symbol length, where N is an integer greater than 0; When the fourth indication information includes the second information; the PDSCH is repeatedly transmitted according to the fourth indication information of the repeatedly transmitted PDCCH, including: Based on the sixth instruction information and the third time slot, the fourth time slot is determined; The PDSCH is repeatedly transmitted according to the fourth time slot, the second start symbol, and the second symbol length.

39. A processor-readable storage medium, wherein, The processor-readable storage medium stores a computer program that causes the processor to perform the method as described in any one of claims 1-12, or the method as described in any one of claims 13-24.

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