Information transmission method and device, equipment, storage medium and computer program product

Abstract

This application discloses an information transmission method, apparatus, device, storage medium, and computer program product. The method includes: a terminal receiving first information and / or second information sent by a network device; wherein the first information is used to indicate whether a first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmissions of the first downlink channel are associated with configuration information for the repeated transmissions of the second downlink channel.

Description

Technical Field

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

[0002] Currently, in non-terrestrial network scenarios, when terminals are in the initial access phase, the Physical Downlink Shared Channel (PDSCH) suffers from coverage limitations due to factors such as limited satellite transmission power or poor channel conditions. Therefore, there is an urgent need to provide a downlink channel coverage enhancement scheme to improve the channel's transmission performance. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide an information transmission method, apparatus, device, storage medium, and computer program product.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] This application provides an information transmission method applied to a terminal, the method comprising:

[0006] Receive first and / or second information sent by network devices;

[0007] Wherein, the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0008] Furthermore, according to at least one embodiment of this application, the first downlink channel carries system messages and / or random access response information.

[0009] Furthermore, according to at least one embodiment of this application, the first information is first downlink control information (DCI); wherein, the first DCI includes a first information field composed of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0010] Furthermore, according to at least one embodiment of this application, if the reserved bit or the newly added bit included in the first information field is a single bit, then when the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0011] And / or,

[0012] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0013] And / or,

[0014] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0015] And / or,

[0016] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0017] Furthermore, according to at least one embodiment of this application, whether the first downlink channel is repeatedly transmitted and / or the number of times the first downlink channel is repeatedly transmitted is determined by the network device based on the channel state.

[0018] Furthermore, according to at least one embodiment of this application, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0019] And / or,

[0020] If the configuration information for repeated transmission of the second downlink channel instructs the terminal to receive repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0021] Furthermore, according to at least one embodiment of this application, the second information is a system message or a second DCI; wherein the second DCI includes a second information field composed of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0022] Furthermore, according to at least one embodiment of this application, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0023] or,

[0024] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0025] Furthermore, according to at least one embodiment of this application, before receiving the second information, the method further includes:

[0026] Receive third information; the third information is used to indicate the number of repeated transmissions of the second downlink channel.

[0027] At least one embodiment of this application provides an information transmission method applied to a network device, the method comprising:

[0028] Send the first information and / or the second information to the terminal;

[0029] in,

[0030] The first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of times the first downlink channel is repeatedly transmitted;

[0031] The second information is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0032] Furthermore, according to at least one embodiment of this application, the first downlink channel carries system messages and / or random access response information.

[0033] Furthermore, according to at least one embodiment of this application, the first information is a first DCI; wherein, the first DCI includes a first information field composed of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0034] Furthermore, according to at least one embodiment of this application, if the reserved bit or the newly added bit included in the first information field is a single bit, then when the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0035] And / or,

[0036] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0037] And / or,

[0038] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0039] And / or,

[0040] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0041] Furthermore, according to at least one embodiment of this application, the method further includes: determining whether the first downlink channel is repeatedly transmitted and / or the number of times the first downlink channel is repeatedly transmitted, based on the channel state.

[0042] Furthermore, according to at least one embodiment of this application, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0043] And / or,

[0044] If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0045] Furthermore, according to at least one embodiment of this application, the second information is a system message or a second DCI; wherein the second DCI includes a second information field composed of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0046] Furthermore, according to at least one embodiment of this application, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel and the repeated transmission of the second downlink channel are associated.

[0047] or,

[0048] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0049] Furthermore, according to at least one embodiment of this application, before sending the second information to the terminal, the method further includes:

[0050] Send a third message to the terminal; the third message is used to indicate the number of repeated transmissions of the second downlink channel.

[0051] At least one embodiment of this application provides an information transmission device, comprising:

[0052] The acquisition module is used to acquire first information and / or second information sent by the network device; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0053] At least one embodiment of this application provides an information transmission device, comprising:

[0054] The sending module is configured to send first information and / or second information to the terminal; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0055] At least one embodiment of this application provides a terminal, including a processor and a memory for storing a computer program capable of running on the processor.

[0056] When the processor runs the computer program, it executes the steps of any of the methods described above on the terminal side.

[0057] At least one embodiment of this application provides a network device, including a processor and a memory for storing a computer program capable of running on the processor.

[0058] When the processor runs the computer program, it executes the steps of any of the methods described above on the network device side.

[0059] At least one embodiment of this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0060] At least one embodiment of this application provides a computer program product, including a computer program that, when executed by a processor, implements the method described in any of the above-described embodiments.

[0061] The information transmission method, apparatus, device, storage medium, and computer program product provided in this application embodiment include: a terminal receiving first information and / or second information sent by a network device; wherein the first information is used to indicate whether a first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with configuration information of repeated transmission of the second downlink channel.

[0062] The technical solution provided in this application provides a downlink channel coverage enhancement scheme. Specifically, the terminal receives repeated transmissions of the first downlink channel through first information and / or second information. This can solve the problem of limited coverage of the first downlink channel, such as the physical downlink shared channel, when the terminal is in the initial access phase in a non-terrestrial network scenario, under conditions such as limited satellite transmission power or poor channel conditions, thereby improving the transmission performance of the channel. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the implementation flow of the information transmission method in the embodiments of this application. Figure 1 ;

[0064] Figure 2 This is a schematic diagram of the implementation flow of the information transmission method in the embodiments of this application. Figure 2 ;

[0065] Figure 3 This is a schematic diagram of the composition of the information transmission device according to an embodiment of this application. Figure 1 ;

[0066] Figure 4 This is a schematic diagram of the composition of the information transmission device according to an embodiment of this application. Figure 2 ;

[0067] Figure 5 This is a schematic diagram of the component structure of the terminal in an embodiment of this application;

[0068] Figure 6 This is a schematic diagram of the composition structure of the network device in an embodiment of this application. Detailed Implementation

[0069] Before introducing the technical solutions of the embodiments of this application, the relevant technologies will be introduced first.

[0070] In related technologies, the Non-Terrestrial Networks Work Item (NTN WI) has studied the downlink coverage performance and enhancement schemes of New Radio (NR) Non-Terrestrial Networks (NTN). Specifically, it evaluated the link performance of multiple downlink channels or signals during the initial access phase and connected state of an NTN scenario. By comparing simulation results and link budgets, it can be observed that under conditions such as limited satellite transmit power or poor channel conditions, the link budgets of the Physical Downlink Shared Channel (PDSCH) carrying System Information Block 1 (SIB1) or System Information Block 19 (SIB19) and the link budget of the PDSCH carrying Message 4 (Msg4) are lower than the demodulation threshold, indicating a coverage limitation problem. In other words, there is a downlink channel coverage limitation problem during the initial access phase of a terminal in an NTN scenario. SIB1 contains basic parameters required for terminal network access, such as cell selection and reselection parameters, and random access parameters. If SIB1 transmission fails, the terminal will not be able to obtain these parameters, thus preventing subsequent access procedures. Similarly, Msg4, as crucial information in the random access process, contains the terminal's uplink authorization information. If Msg4 transmission fails, the terminal will not obtain uplink authorization, thus preventing data transmission.

[0071] To support successful initial access and data transmission in NTN scenarios, coverage enhancement schemes are needed to improve channel transmission performance and ensure system communication quality and user experience. One effective solution is to enhance PDSCH transmission through repetition, thereby increasing coding gain and reliability and improving link performance.

[0072] Currently, Ultra Reliable Low Latency Communication (URLLC) based on Multi-TRP (Multi-Transmission and Reception Point) incorporates PDSCH repetition to improve downlink data channel reliability. The number of PDSCH transmissions (repetitionNumber) is dynamically scheduled via the Time Domain Resource Allocation (TDRA) field in the Data Interface (DCI). However, this PDSCH repetition configuration applies to the connected state and cannot be used during the initial terminal access process in NTN scenarios. The TDRA list is configured via Radio Resource Control (RRC) signaling.

[0073] For receiving system information, or receiving PDSCH carrying Msg4 during random access, the time domain resource allocation parameters are configured through the system message PDSCH-ConfigCommon->pdsch-TimeDomainAllocationList->PDSCH-TimeDomainResourceAllocationList, or through the default PDSCH resource allocation parameter table (including dmrs-TypeA-Position, PDSCH mapping type, K0, S, L), but it cannot indicate the number of times PDSCH is repeatedly transmitted.

[0074] Currently, in NTN scenarios, due to the very long distance between satellite and ground, the propagation path loss is large. When the satellite's transmission power is limited, the coverage performance of end-to-end link communication is limited. According to the current link-level performance evaluation results of NTN downlink channels or information, it can be observed that PDSCH carrying a large number of system information such as SIB1 or SIB19, as well as PDSCH carrying Msg4, have coverage limitations and require coverage enhancement schemes that repeatedly transmit PDSCH.

[0075] For PDSCH repetition in the time or frequency domain, the current protocol only supports configuration of PDSCH repetition in the connection state. The corresponding repetition scheme and repetition number are indicated by RRC signaling, and the PDSCH repetition number is dynamically indicated by the TDRA field in DCI.

[0076] However, for downlink transmissions during cell synchronization and random access processes, such as when the PDSCH carries SIB1 or SIB19, or when the PDSCH carries Msg4, there are some communication scenarios with limited coverage. In these cases, PDSCH retransmission and related configurations are not yet supported. The success of this information transmission directly affects whether the terminal can successfully access the network.

[0077] In addition, in order to support downlink channel repetitive transmission coverage enhancement schemes during cell synchronization and random access processes, it is difficult to directly modify or add parameter configurations to the time domain resource configuration parameters in the protocol when designing the scheduling mechanism. The time domain resource configuration parameters include Pdsch-TimeDomainAllocationList provided in PDSCH-ConfigCommon or default TDRA table configuration.

[0078] Therefore, in order to support the repeated transmission of the above channels or information to improve link coverage performance, it is necessary to design a reasonable scheduling method so that the network side can accurately schedule terminals such as user equipment (UE) to receive repeatedly transmitted PDSCH information, and use the additional repetition to improve the signal-to-noise ratio or coding gain.

[0079] Furthermore, to gain reliability through repeated transmissions, it is necessary to consider different scenarios and channel conditions. In order to make reasonable use of downlink transmission resources, the network side also needs to effectively configure and indicate the number of repeated transmissions, but this may require more signaling overhead. Therefore, the solution also needs to consider the balance between scheduling flexibility and control signaling overhead.

[0080] Therefore, to address the issue of limited downlink channel coverage during the initial access phase of the terminal in the aforementioned NTN scenario, which includes PDSCH transmissions carrying SIB1 or SIB19 or Msg4 information, this application proposes a scheduling and indication method for PDSCH repetition transmission to improve coverage performance. Specifically, by enabling PDSCH repetition transmission scheduling, while minimizing or avoiding additional control signaling overhead and complexity, it ensures that the terminal correctly demodulates and processes the repetitively transmitted PDSCH, thereby improving the transmission success rate of system information and Msg4 information, and ultimately improving the channel transmission performance during the initial access phase of the terminal in the NTN scenario.

[0081] See Figure 1 , Figure 1 This is a schematic diagram illustrating the implementation flow of the information transmission method according to an embodiment of this application, applied to a terminal. The method includes step 101:

[0082] Step 101: Receive first information and / or second information sent by the network device; wherein, the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0083] It is understood that the first downlink channel refers to the Physical Downlink Shared Channel (PDSCH), and the second downlink channel refers to the Physical Downlink Control Channel (PDCCH).

[0084] It is understood that the terminal receives the first information and / or the second information for two reasons. First, considering that in the initial access phase of the terminal in the NTN scenario, such as during cell synchronization and random access, when the satellite's transmission power is limited, the coverage performance of the end-to-end link communication will be limited, resulting in limited downlink channel coverage, that is, the downlink channel cannot effectively cover the target area. In this application, in order to support downlink channel coverage enhancement during cell synchronization and random access, the network side instructs the terminal whether it needs to repeatedly transmit the first downlink channel and / or the number of times the first downlink channel is repeatedly transmitted, in order to solve the problem of limited downlink channel coverage in the initial access phase of the terminal in the NTN scenario. Second, considering that the PDSCH retransmission mechanism in the NTN scenario is mainly applied to situations with limited coverage and poor channel conditions, and according to the current link performance evaluation results, the PDCCH channel also has the problem of limited coverage. Currently, the PDCCH coverage enhancement scheme, such as the PDCCH retransmission mechanism, can improve the reliability of the control channel. Based on this, it is considered to combine the indication or configuration of PDCCH retransmission to support the scheduling of PDSCH retransmission.

[0085] In practical applications, the first downlink channel can be a PDSCH carrying key information such as system messages (e.g., SIB1 or SIB19) or random access response information (e.g., Msg4 message).

[0086] Accordingly, in some embodiments, the first downlink channel carries system messages and / or random access response information.

[0087] The process of the terminal receiving the first information is explained below.

[0088] In practical applications, the network side can use the first DCI to carry and schedule the information repeatedly transmitted on the first downlink channel.

[0089] Based on this, in some embodiments, the first information is a first DCI; wherein, the first DCI includes a first information field composed of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0090] Here, the network side can use the first information field, which is composed of reserved bits or newly added bits in the first DCI, to indicate whether the first downlink channel is repeatedly transmitted, and / or to indicate the number of times the first downlink channel is repeatedly transmitted.

[0091] Here, the network side can select the number of repeated transmissions of the first downlink channel based on the number of reserved bits or the number of newly added bits available in the first DCI.

[0092] In some embodiments, if the reserved bit or the newly added bit included in the first information field is a single bit, and the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0093] And / or,

[0094] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0095] And / or,

[0096] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0097] And / or,

[0098] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0099] It is understandable that the first value and the second value are preset values.

[0100] It is understood that if the reserved bit or the newly added bit contained in the first information field is a single bit, then if the value of the reserved bit or the newly added bit is not the first value, the terminal is instructed to receive a single first downlink channel.

[0101] It is understood that if the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is less than or equal to the second value, the terminal is instructed to receive a single first downlink channel.

[0102] It is understood that the first DCI includes a first information field (represented by DCI field), which consists of 1 bit or several reserved bits in the first DCI, or 1 bit or several newly added bits in the first DCI. The bit length of the first information field depends on the number of reserved bits or newly added bits in the first DCI and the communication channel conditions.

[0103] Here, the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or to indicate the number of times the first downlink channel is repeatedly transmitted, which may specifically include the following:

[0104] In the first case, if the first information field contains 1 reserved bit.

[0105] In this case, when the reserved bit is "0" (i.e., not the first value such as "1"), it indicates that the terminal receives a single first downlink channel; when the reserved bit is the first value such as "1", it indicates that the terminal receives a repeatedly transmitted first downlink channel. The number of times the first downlink channel is repeatedly transmitted is a predefined number, for example, the predefined value is 2 times.

[0106] The second scenario is if the first information field contains more than 1 reserved bit.

[0107] In this case, when the reserved bits of the multiple bits contained in the first information field are all "0", that is, when the corresponding decimal value is equal to the second value such as "0", the terminal is instructed to receive a single first downlink channel; when the decimal number corresponding to the multiple reserved bits contained in the first information field is greater than the second value such as "0", the terminal is instructed to receive a repeatedly transmitted first downlink channel. The number of repeated transmissions of the first downlink channel is the decimal number corresponding to the multiple reserved bits contained in the first information field, that is, the value obtained after decimal conversion. For example, assuming that the first information field contains 3 reserved bits of 010, then the decimal number corresponding to the reserved bits is 2.

[0108] Here, if the first DCI does not contain reserved bits, the first information field consists of additional bit information, and the indication method is similar to that indicated by reserved bits, which will not be described again here.

[0109] Here, the terminal detects the first DCI sent by the network, decodes it to obtain the information of the first information field, and determines whether it needs to receive the repeated transmission of the first downlink channel and the number of repeated transmissions of the first downlink channel based on the first information field.

[0110] In practical applications, the network side can determine whether to repeat the first downlink channel to improve the coverage and transmission performance of the channel based on conditions such as channel quality and communication scenario requirements. Furthermore, it can determine the number of repetitions of the first downlink channel and then receive the repetitively transmitted first downlink channel by sending the first DCI scheduling terminal.

[0111] Based on this, in some embodiments, whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel are determined by the network device according to the channel state.

[0112] It is understood that the network device's determination of whether the first downlink channel should be retransmitted based on the channel state may include: evaluating the downlink channel quality based on the channel state information (CSI) sent by the terminal, and determining that the first downlink channel needs to be retransmitted when the downlink channel quality is poor.

[0113] It is understood that the network device determining the number of retransmissions of the first downlink channel based on the channel state may include: evaluating the downlink channel quality based on the channel state information (CSI) sent by the terminal, and determining that the first downlink channel needs to be retransmitted when the downlink channel quality is poor; and determining the number of retransmissions of the first downlink channel based on the number of reserved bits or the number of newly added bits contained in the first information field of the first DCI.

[0114] Specifically, if the reserved bit or the newly added bit contained in the first information field is a single bit, then the number of repeated transmissions of the first downlink channel is a predefined value; if the reserved bit or the newly added bit contained in the first information field is multiple bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bit or the newly added bit.

[0115] It should be noted that the repeated transmission of the first downlink channel is dynamically scheduled based on network channel conditions and the number of reserved bits or newly added bits available in the first DCI. For example, when channel conditions are poor, more reserved bits can be used to indicate a higher number of repetitions to ensure the reliability of information transmission. If new bit information is introduced, the need to minimize signaling overhead is considered, and a case supporting a small number of PDSCH repetitions is selected. In practical applications, the network side calculates the optimal number of repetitions based on the current Channel State Information (CSI) and the terminal's reception performance, and sends it to the terminal through the first information field in the DCI. After receiving the first DCI, the terminal correctly demodulates and processes the repeatedly transmitted PDSCH according to the indication in the first information field of the first DCI.

[0116] As an example, the first DCI can be a DCI format 0_1 ​​scrambled with System Information Radio Network Temporary Identifier (SI-RNTI) for scheduling system messages (SIB1 or SIB19, etc.). In the current SI-RNTI scrambled DCI format 0_1, there are 15 or 17 reserved bits. When the network side determines, based on communication scenarios and channel transmission quality, that it needs to repeatedly transmit the PDSCH carrying the system message to ensure the terminal can successfully receive information, it uses the reserved bits in the first DCI to instruct the terminal to receive repeated transmissions of the PDSCH carrying the system message, and dynamically indicates the number of repeated transmissions.

[0117] As an example, for a PDSCH carrying Msg4, if the DCI format 1_0 scrambled by the Cell Radio Network Temporary Identifier (C-RNTI) is used for scheduling, the reserved bits of up to 12 bits in the DCI can be used to instruct the terminal to receive the repeatedly transmitted PDSCH carrying Msg4, thereby achieving the purpose of coverage enhancement.

[0118] As an example, for a PDSCH carrying Msg4, if it is scheduled using DCI format 1_0 scrambled with Temporary Cell Radio Network Temporary Identifier (TC-RNTI), since the reserved bits in this DCI are 0, new bits need to be introduced to form the first information field. The first information field is used to instruct the terminal to receive the repeatedly transmitted PDSCH carrying Msg4, thereby achieving the purpose of coverage enhancement.

[0119] The process of the terminal receiving the second information is explained below.

[0120] In practical applications, considering that the PDSCH retransmission mechanism in NTN scenarios is mainly used in situations with limited coverage and poor channel conditions, and that current link performance evaluation results show that the PDCCH channel also suffers from limited coverage, current PDCCH coverage enhancement schemes, such as the PDCCH retransmission mechanism, can improve the reliability of the control channel. Therefore, this paper considers combining blind detection of PDCCH repetition with scheduling of PDSCH retransmission. That is, by using the association information of PDCCH repetition, the terminal is instructed to receive retransmitted PDSCH based on the retransmission of PDCCH.

[0121] Based on this, in some embodiments, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0122] And / or,

[0123] If the configuration information for repeated transmission of the second downlink channel instructs the terminal to receive repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0124] It is understandable that if the configuration information for repeated transmission of the second downlink channel indicates that the second downlink channel should not be repeated, then the first downlink channel should not be repeated.

[0125] It is understood that the first downlink channel refers to the Physical Downlink Shared Channel (PDSCH). The second downlink channel refers to the Physical Downlink Control Channel (PDCCH).

[0126] It is understandable that the network side supports repeated PDCCH transmissions through the configuration of the control resource set (CORESET) and search space during the initial access process. The specific configuration method of PDCCH and the terminal blind detection behavior are existing technologies.

[0127] It is understood that the network side sends the second information, which is used to instruct the terminal to associate the scheduling of PDSCH retransmission with the configuration of PDCCH retransmission. Specifically, the network side instructs the terminal to determine whether to receive the retransmitted PDSCH based on whether to receive (or detect) the retransmitted PDCCH. If the terminal is instructed to receive the retransmitted PDCCH, the terminal determines to receive the retransmitted PDSCH. In the case where the terminal is instructed to receive the retransmitted PDSCH, the number of retransmissions of the received PDSCH is determined based on the number of retransmissions of the PDCCH.

[0128] In some embodiments, the second information is a system message or a second DCI; wherein the second DCI includes a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0129] It is understood that the second information can be carried in system messages (such as MIB or SIB) or in the corresponding DCI of the PDSCH scheduling. If carried in system messages, no additional control signaling overhead is required; if carried in DCI, reserved bits in the DCI need to be used or additional bit indication information needs to be added.

[0130] In some embodiments, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0131] or,

[0132] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0133] It is understood that the third and fourth values ​​are preset values.

[0134] It is understood that if the reserved bit or the newly added bit is a single bit, and the value of the reserved bit or the newly added bit is not the third value, it indicates that the configuration information for repeated transmission of the first downlink channel and repeated transmission of the second downlink channel is not associated.

[0135] It is understood that if the reserved bit or the newly added bit consists of multiple bits, and the decimal number corresponding to the reserved bit or the newly added bit is not the fourth value, then it indicates that the configuration information for repeated transmission of the first downlink channel and repeated transmission of the second downlink channel is not associated.

[0136] In other words, after receiving the second information sent by the network side, the terminal determines whether to use the retransmission mechanism for the reception of the first downlink channel, namely PDSCH, according to the configuration of the retransmission of the second downlink channel, namely PDCCH.

[0137] For example, assuming that the reserved bit or the newly added bit contained in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value such as "1", then it indicates that the configuration information for repeated transmission of the first downlink channel is associated with the configuration information for repeated transmission of the second downlink channel; otherwise, it indicates that the configuration information for repeated transmission of the first downlink channel is not associated with the configuration information for repeated transmission of the second downlink channel.

[0138] For example, if the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to a fourth value such as "0", then it indicates that the configuration information for repeated transmission of the first downlink channel is associated with the configuration information for repeated transmission of the second downlink channel; otherwise, it indicates that the configuration information for repeated transmission of the first downlink channel is not associated with the configuration information for repeated transmission of the second downlink channel.

[0139] In some embodiments, before receiving the second information, the method further includes:

[0140] Receive third information; the third information is used to indicate the number of repeated transmissions of the second downlink channel.

[0141] It is understandable that the terminal receives the network side's control resource set (CORESET) and search space configuration information and / or the network side's configuration information regarding the repeated transmission of the second downlink channel, i.e., PDCCH, to determine the time-frequency domain resources of the candidate PDCCH and the number of PDCCH repetitions during the blind detection process.

[0142] Here, based on the number of times the PDCCH is repeatedly transmitted (the number of times the PDCCH is transmitted is greater than 1), the terminal determines to receive the first PDSCH that is repeatedly transmitted, and the number of times the PDSCH is repeated is the same as the number of times the PDCCH is repeated.

[0143] It should be noted that in NTN scenarios, repeated transmission of PDCCH can improve the reliability of control signaling. Based on the association between repeated PDCCH transmission and repeated PDSCH transmission indication, in this application, the network side sends association information to indirectly indicate the number of times PDSCH is repeated through the number of times PDCCH is repeated. Specifically, the network side can determine the number of times PDCCH is repeated based on channel conditions and the terminal's receiving performance, and send the configuration information to the terminal. The terminal receives the second information sent by the network side, determines the number of times PDSCH is repeated based on the number of times PDCCH is repeated, so as to correctly demodulate and process the repeatedly transmitted PDSCH. For example, if PDCCH is repeated 4 times, then the terminal assumes that PDSCH will also be repeated 4 times. This method can reduce signaling overhead, provided that the terminal correctly receives and understands the PDCCH configuration.

[0144] The embodiments of this application have the following advantages:

[0145] (1) The terminal receives first information and / or second information sent by the network device; wherein, the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0146] This application provides a downlink channel coverage enhancement scheme. Specifically, the terminal receives repeated transmissions of the first downlink channel through first information and / or second information. This can solve the problem of limited coverage of the first downlink channel, such as the physical downlink shared channel, when the terminal is in the initial access phase in a non-terrestrial network scenario, under conditions such as limited satellite transmission power or poor channel conditions, thereby improving the transmission performance of the channel.

[0147] (2) Regarding the reliability issues of PDSCH transmission of SIB1 or SIB19 and / or Msg4 information in NTN coverage-limited environments, existing technologies do not yet support mechanisms and configurations for retransmission of related information. This application proposes a scheduling method to indicate the retransmission of downlink information during initial access or during the access process, thereby improving coverage performance. Without modifying default or predefined time-domain resource configurations, and with minimal or no additional control signaling overhead and complexity, the terminal is instructed to receive retransmitted PDSCH, perform correct demodulation and processing, and improve the success rate of system information and Msg4 information transmission, thus improving the initial access process of terminals in NTN scenarios.

[0148] (3) In environments with limited NTN coverage, this application can significantly improve the reliability of PDSCH transmission of SIB1 or SIB19 and / or PDSCH transmission of Msg4 information, thereby improving the initial access process for terminals and showing broad application prospects. With the development of 5G and future 6G networks, NTN will become an important means of connecting remote areas, maritime, and air environments where traditional terrestrial networks struggle to cover. This application is not only applicable to the current NTN environment but can also provide technical support for a wider range of future wireless communication scenarios, including but not limited to satellite internet, drone communication networks, and deep-sea communication. By improving the reliability and efficiency of information transmission, it will lay a solid foundation for building a globally seamless communication network and promote the development of wireless communication technology towards greater efficiency, reliability, and wider reach.

[0149] See Figure 2 , Figure 2 This is a schematic diagram illustrating the implementation flow of the information transmission method according to an embodiment of this application, applied to a network device. The method includes step 201:

[0150] Step 201: Send first information and / or second information to the terminal; wherein, the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0151] It is understood that the first downlink channel refers to the Physical Downlink Shared Channel (PDSCH), and the second downlink channel refers to the Physical Downlink Control Channel (PDCCH).

[0152] It is understood that the terminal receives the first information and / or the second information for two reasons. First, considering that in the initial access phase of the terminal in the NTN scenario, such as during cell synchronization and random access, when the satellite's transmission power is limited and the channel conditions are poor, the coverage performance of the end-to-end link communication will be limited, resulting in limited downlink channel coverage, that is, the downlink channel cannot effectively cover the target area. In this application, in order to support downlink channel coverage enhancement during cell synchronization and random access, the network side instructs the terminal whether it needs to repeatedly transmit the first downlink channel and / or the number of repeated transmissions of the first downlink channel, in order to solve the problem of limited downlink channel coverage in the initial access phase of the terminal in the NTN scenario. Second, considering that the PDSCH retransmission mechanism in the NTN scenario is mainly applied to situations with limited coverage and poor channel conditions, and according to the current link performance evaluation results, the PDCCH channel also has the problem of limited coverage. Currently, the PDCCH coverage enhancement scheme, such as the PDCCH retransmission mechanism, can improve the reliability of the control channel. Based on this, it is considered to combine the scheduling or configuration of PDCCH retransmission to support the scheduling of PDSCH retransmission.

[0153] In practical applications, the first downlink channel can be a PDSCH carrying key information such as system messages (e.g., SIB1 or SIB19) or random access response information (e.g., Msg4 message).

[0154] Accordingly, in some embodiments, the first downlink channel carries system messages and / or random access response information.

[0155] In practical applications, the network side can use the first DCI to carry and schedule the information repeatedly transmitted on the first downlink channel.

[0156] Based on this, in some embodiments, the first information is a first DCI; wherein, the first DCI includes a first information field composed of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0157] In some embodiments, if the reserved bit or the newly added bit included in the first information field is a single bit, and the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0158] And / or,

[0159] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0160] And / or,

[0161] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0162] And / or,

[0163] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0164] It is understandable that the first value and the second value are preset values.

[0165] It is understood that if the reserved bit or the newly added bit contained in the first information field is a single bit, then if the value of the reserved bit or the newly added bit is not the first value, the terminal is instructed to receive a single first downlink channel.

[0166] It is understood that if the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is less than or equal to the second value, the terminal is instructed to receive a single first downlink channel.

[0167] In practical applications, the network side can determine whether to repeat the first downlink channel to improve the coverage and transmission performance of the channel based on conditions such as channel quality and communication scenario requirements. Furthermore, it can determine the number of repetitions of the first downlink channel and then receive the repetitively transmitted first downlink channel by sending the first DCI scheduling terminal.

[0168] Based on this, in some embodiments, the method further includes: determining whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel based on the channel state.

[0169] It is understood that the network device's determination of whether the first downlink channel should be retransmitted based on the channel state may include: evaluating the downlink channel quality based on the channel state information (CSI) sent by the terminal, and determining that the first downlink channel needs to be retransmitted when the downlink channel quality is poor.

[0170] It is understood that the network device determining the number of retransmissions of the first downlink channel based on the channel state may include: evaluating the downlink channel quality based on the channel state information (CSI) sent by the terminal, and determining that the first downlink channel needs to be retransmitted when the downlink channel quality is poor; and determining the number of retransmissions of the first downlink channel based on the number of reserved bits or the number of newly added bits contained in the first information field of the first DCI.

[0171] Specifically, if the reserved bit or the newly added bit contained in the first information field is a single bit, then the number of repeated transmissions of the first downlink channel is a predefined value; if the reserved bit or the newly added bit contained in the first information field is multiple bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bit or the newly added bit.

[0172] In practical applications, considering that the PDSCH retransmission mechanism in NTN scenarios is mainly used in situations with limited coverage and poor channel conditions, and that current link performance evaluation results show that the PDCCH channel also suffers from limited coverage, current PDCCH coverage enhancement schemes, such as the PDCCH retransmission mechanism, can improve the reliability of the control channel. Therefore, this paper considers combining blind detection of PDCCH repetition with scheduling of PDSCH retransmission. That is, by using the association information of PDCCH repetition, the terminal is instructed to receive retransmitted PDSCH based on the retransmission of PDCCH.

[0173] Based on this, in some embodiments, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0174] And / or,

[0175] If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0176] It is understandable that if the configuration information for repeated transmission of the second downlink channel indicates that the second downlink channel should not be repeated, then the first downlink channel should not be repeated.

[0177] It is understood that the first downlink channel refers to the Physical Downlink Shared Channel (PDSCH). The second downlink channel refers to the Physical Downlink Control Channel (PDCCH).

[0178] In some embodiments, the second information is a system message or a second DCI; wherein the second DCI includes a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0179] In some embodiments, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0180] or,

[0181] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0182] It is understood that the third and fourth values ​​are preset values.

[0183] It is understood that if the reserved bit or the newly added bit is a single bit, and the value of the reserved bit or the newly added bit is not the third value, it indicates that the configuration information for repeated transmission of the first downlink channel and repeated transmission of the second downlink channel is not associated.

[0184] It is understood that if the reserved bit or the newly added bit consists of multiple bits, and the decimal number corresponding to the reserved bit or the newly added bit is not the fourth value, then it indicates that the configuration information for repeated transmission of the first downlink channel and repeated transmission of the second downlink channel is not associated.

[0185] In some embodiments, before sending the second information to the terminal, the method further includes:

[0186] Send a third message to the terminal; the third message is used to indicate the number of repeated transmissions of the second downlink channel.

[0187] It is understandable that the terminal receives the network side's control resource set (CORESET) and search space configuration information and / or the network side's configuration information regarding the repeated transmission of the second downlink channel, i.e., PDCCH, to determine the time-frequency domain resources of the candidate PDCCH and the number of PDCCH repetitions during the blind detection process.

[0188] Here, based on the number of times the PDCCH is repeatedly transmitted (the number of times the PDCCH is transmitted is greater than 1), the terminal determines to receive the first PDSCH that is repeatedly transmitted, and the number of times the PDSCH is repeated is the same as the number of times the PDCCH is repeated.

[0189] The embodiments of this application have the following advantages:

[0190] The network device sends first information and / or second information to the terminal; wherein, the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0191] This application provides a downlink channel coverage enhancement scheme. Specifically, the terminal receives repeated transmissions of the first downlink channel through first information and / or second information. This can solve the problem of limited coverage of the first downlink channel, such as the physical downlink shared channel, when the terminal is in the initial access phase in a non-terrestrial network scenario, under conditions such as limited satellite transmission power or poor channel conditions, thereby improving the transmission performance of the channel.

[0192] To implement the information transmission method of this application embodiment, this application embodiment also provides an information transmission device, which is installed in a terminal. Figure 3 This is a schematic diagram of the composition structure of the information transmission device according to an embodiment of this application, as shown below. Figure 3 As shown, the device includes:

[0193] The receiving module 31 is configured to receive first information and / or second information sent by the network device; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0194] In some embodiments, the first downlink channel carries system messages and / or random access response information.

[0195] In some embodiments, the first information is a first DCI; wherein the first DCI includes a first information field consisting of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0196] In some embodiments, if the reserved bit or the newly added bit included in the first information field is a single bit, and the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0197] And / or,

[0198] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0199] And / or,

[0200] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0201] And / or,

[0202] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0203] In some embodiments, whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel is determined by the network device based on the channel state.

[0204] In some embodiments, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0205] And / or,

[0206] If the configuration information for repeated transmission of the second downlink channel instructs the terminal to receive repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0207] In some embodiments, the second information is a system message or a second DCI; wherein the second DCI includes a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0208] In some embodiments, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0209] or,

[0210] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0211] In some embodiments, before receiving the second information, the receiving module 31 is further configured to:

[0212] Receive third information; the third information is used to indicate the number of repeated transmissions of the second downlink channel.

[0213] In practical applications, the receiving module 31 can be implemented by the communication interface in the information transmission device.

[0214] It should be noted that the information transmission device provided in the above embodiments is only illustrated by the division of the above program modules. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0215] To implement the information transmission method of this application embodiment, this application embodiment also provides an information transmission device, which is installed in a network device. Figure 4 This is a schematic diagram of the composition structure of the information transmission device according to an embodiment of this application, as shown below. Figure 4 As shown, the device includes:

[0216] The sending module 41 is used to send first information and / or second information to the terminal; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

[0217] In some embodiments, the first downlink channel carries system messages and / or random access response information.

[0218] In some embodiments, the first information is a first DCI; wherein the first DCI includes a first information field consisting of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

[0219] In some embodiments, if the reserved bit or the newly added bit included in the first information field is a single bit, and the value of the reserved bit or the newly added bit is a first value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0220] And / or,

[0221] If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value.

[0222] And / or,

[0223] If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel.

[0224] And / or,

[0225] If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

[0226] In some embodiments, the method determines whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel based on the channel state.

[0227] In some embodiments, if the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is repeatedly transmitted.

[0228] And / or,

[0229] If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

[0230] In some embodiments, the second information is a system message or a second DCI; wherein the second DCI includes a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

[0231] In some embodiments, if the reserved bit or the newly added bit included in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0232] or,

[0233] If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

[0234] In some embodiments, before sending the second information to the terminal, the sending module 41 is further configured to:

[0235] Send a third message to the terminal; the third message is used to indicate the number of repeated transmissions of the second downlink channel.

[0236] In practical applications, the sending module 41 can be implemented by the communication interface in the information transmission device.

[0237] It should be noted that the information transmission device provided in the above embodiments is only illustrated by the division of the above program modules. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0238] This application also provides a terminal, such as... Figure 5 As shown, it includes:

[0239] The first communication interface 51 is capable of exchanging information with other devices;

[0240] The first processor 52, connected to the first communication interface 51, is used to execute the methods provided by one or more of the aforementioned terminal-side technical solutions when running a computer program. The computer program is stored in the first memory 53.

[0241] It should be noted that the specific processing procedures of the first processor 52 and the first communication interface 51 are detailed in the method embodiment and will not be repeated here.

[0242] Of course, in practical applications, the various components in terminal 50 are coupled together through bus system 54. It can be understood that bus system 54 is used to implement communication between these components. In addition to a data bus, bus system 54 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 5 The general labeled all buses as Bus System 54.

[0243] The first memory 53 in this embodiment is used to store various types of data to support the operation of the terminal 50. Examples of such data include any computer program used to operate on the terminal 50.

[0244] The methods disclosed in the embodiments of this application can be applied to the first processor 52, or implemented by the first processor 52. The first processor 52 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the first processor 52. The first processor 52 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 52 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the first memory 53. The first processor 52 reads the information in the first memory 53 and combines its hardware to complete the steps of the aforementioned method.

[0245] This application also provides a network device, such as... Figure 6 As shown, it includes:

[0246] The second communication interface 61 is capable of exchanging information with other devices;

[0247] The second processor 62, connected to the second communication interface 61, is used to execute the methods provided by one or more technical solutions on the network device side when running a computer program. The computer program is stored in the second memory 63.

[0248] It should be noted that the specific processing procedures of the second processor 62 and the second communication interface 61 are detailed in the method embodiment and will not be repeated here.

[0249] Of course, in practical applications, the various components in network device 60 are coupled together through bus system 64. It can be understood that bus system 64 is used to implement communication between these components. In addition to a data bus, bus system 64 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 6 The general labeled all buses as Bus System 64.

[0250] The second memory 63 in this embodiment is used to store various types of data to support the operation of the network device 60. Examples of such data include any computer programs used to operate on the network device 60.

[0251] The methods disclosed in the embodiments of this application can be applied to the second processor 62, or implemented by the second processor 62. The second processor 62 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the second processor 62. The second processor 62 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 62 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the second memory 63. The second processor 62 reads the information in the second memory 63 and combines its hardware to complete the steps of the aforementioned method.

[0252] In an exemplary embodiment, the terminal 50 and the network device 60 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0253] It is understood that the memories (first memory 53, second memory 63) in the embodiments of this application can be volatile memory or non-volatile memory, or both. Specifically, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); the magnetic surface memory can be disk storage or magnetic tape storage. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0254] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a memory that stores a computer program. This computer program can be executed by the first processor 52 of the terminal 50 to complete the steps described in the aforementioned terminal-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0255] For example, this application also provides a computer program product, including a computer program that can be executed by a first processor 52 of a terminal 50 to complete the steps of any of the aforementioned terminal-side methods, and the computer program can be executed by a second processor 62 of a network device 60 to complete the steps of any of the aforementioned network device-side methods.

[0256] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0257] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0258] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. An information transmission method, characterized in that, Applied to a terminal, the method includes: Receive first and / or second information sent by network devices; in, The first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of times the first downlink channel is repeatedly transmitted; The second information is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

2. The method according to claim 1, characterized in that, The first downlink channel carries system messages and / or random access response information.

3. The method according to claim 1 or 2, characterized in that, The first information is a first downlink control information (DCI); wherein, the first DCI includes a first information field consisting of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or, the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

4. The method according to claim 3, characterized in that, If the reserved bit or the newly added bit contained in the first information field is a single bit, then when the value of the reserved bit or the newly added bit is the first value, the terminal is instructed to receive repeated transmissions of the first downlink channel. And / or, If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value. And / or, If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel. And / or, If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

5. The method according to claim 1, characterized in that, Whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel is determined by the network device based on the channel state.

6. The method according to claim 1, characterized in that, If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is transmitted repeatedly. And / or, If the configuration information for repeated transmission of the second downlink channel instructs the terminal to receive repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

7. The method according to claim 1, characterized in that, The second information is a system message or a second DCI; wherein the second DCI contains a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

8. The method according to claim 7, characterized in that, If the reserved bit or the newly added bit contained in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel. or, If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

9. The method according to claim 1, characterized in that, Before receiving the second information, the method further includes: Receive third information; the third information is used to indicate the number of repeated transmissions of the second downlink channel.

10. An information transmission method, characterized in that, Applied to network devices, the method includes: Send the first information and / or the second information to the terminal; in, The first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of times the first downlink channel is repeatedly transmitted; The second information is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

11. The method according to claim 10, characterized in that, The first downlink channel carries system messages and / or random access response information.

12. The method according to claim 10 or 11, characterized in that, The first information is the first DCI; wherein the first DCI includes a first information field consisting of reserved bits or newly added bits; the first information field is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information field is used to indicate the number of repeated transmissions of the first downlink channel.

13. The method according to claim 12, characterized in that, If the reserved bit or the newly added bit contained in the first information field is a single bit, then when the value of the reserved bit or the newly added bit is the first value, the terminal is instructed to receive repeated transmissions of the first downlink channel. And / or, If the reserved bit or the newly added bit contained in the first information field is one bit, then the number of repeated transmissions of the first downlink channel is a predefined value. And / or, If the first information field contains multiple reserved bits or newly added bits, and the decimal number corresponding to the reserved bits or newly added bits is greater than the second value, the terminal is instructed to receive repeated transmissions of the first downlink channel. And / or, If the first information field contains multiple reserved bits or newly added bits, then the number of repeated transmissions of the first downlink channel is the decimal number corresponding to the reserved bits or newly added bits.

14. The method according to claim 10, characterized in that, The method further includes: Based on the channel state, determine whether the first downlink channel is retransmitted and / or the number of retransmissions of the first downlink channel.

15. The method according to claim 10, characterized in that, If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the first downlink channel is transmitted repeatedly. And / or, If the configuration information for repeated transmission of the second downlink channel indicates repeated transmission of the second downlink channel, then the number of repeated transmissions of the first downlink channel is the same as the number of repeated transmissions of the second downlink channel.

16. The method according to claim 10, characterized in that, The second information is a system message or a second DCI; wherein the second DCI contains a second information field consisting of reserved bits or newly added bits; the second information field is used to indicate the configuration information of repeated transmission of the first downlink channel and repeated transmission of the second downlink channel.

17. The method according to claim 16, characterized in that, If the reserved bit or the newly added bit contained in the second information field is a single bit, and the value of the reserved bit or the newly added bit is a third value, then it indicates that the configuration information of the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel. or, If the reserved bits or the newly added bits contained in the second information field are multiple bits, and the decimal number corresponding to the reserved bits or the newly added bits is equal to the fourth value, then it indicates that the configuration information for the repeated transmission of the first downlink channel is associated with the repeated transmission of the second downlink channel.

18. The method according to claim 10, characterized in that, Before sending the second information to the terminal, the method further includes: Send a third message to the terminal; the third message is used to indicate the number of repeated transmissions of the second downlink channel.

19. An information transmission device, characterized in that, include: The acquisition module is used to acquire first information and / or second information sent by the network device; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

20. An information transmission device, characterized in that, include: The sending module is configured to send first information and / or second information to the terminal; wherein the first information is used to indicate whether the first downlink channel is repeatedly transmitted, and / or the first information is used to indicate the number of repeated transmissions of the first downlink channel; the second information is used to indicate that the repeated transmission of the first downlink channel is associated with the configuration information of the repeated transmission of the second downlink channel.

21. A terminal, characterized in that, This includes a processor and memory for storing computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 9.

22. A network device, characterized in that, This includes a processor and memory for storing computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 10 to 18.

23. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 9, or implements the steps of the method according to any one of claims 10 to 18.

24. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 9, or implements the method according to any one of claims 10 to 18.

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