PDCCH transmission method, device, terminal and network side equipment

Abstract

The present invention provides a PDCCH transmission method, apparatus, terminal, and network-side equipment. The method comprises: receiving configuration information for repeated PDCCH transmission between time slots from a network-side device; determining, based on the configuration information, the time slots of at least two transmission opportunities for repeated PDCCH transmission and the transmission resources for each time slot in which the transmission opportunity occurs; and monitoring PDCCH transmission in the time slots in which the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots. This transmission method can adapt to situations where the number of repeated transmissions is greater than one when the network device configures the terminal to perform repeated PDCCH transmission between time slots, thereby ensuring the reliability of PDCCH transmission.

Description

Technical Field

[0001] The present invention relates to the field of wireless technology, and in particular to a physical downlink control channel (PDCCH) transmission method, device, terminal, and network-side equipment. Background Art

[0002] Currently, even when PDCCH retransmission is supported, the repeated transmission method of the Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH) cannot be simply reused. Typically, the number of repetitions configured for the PDCCH is less than the number of repetitions for the PDSCH or PUSCH. For example, if the maximum number of repetitions configured for the PDCCH is 2, simply abandoning the transmission of a certain time slot when encountering an unavailable time slot or symbol will result in the number of transmissions being reduced to 1, affecting the reliability of PDCCH transmission. Furthermore, due to the limitations of PDCCH transmission resources, the PDCCH transmission resources for different time slots may be different. Simply reusing the repeated transmission method of the PDSCH or PUSCH so that the two time slots occupy the same transmission resources may result in the PDCCH transmitted in a certain time slot not being in the monitored state, meaning that the terminal will not monitor it, which will also affect the reliability of PDCCH transmission. Summary of the Invention

[0003] The object of the present invention is to provide a physical downlink control channel (PDCCH) transmission method, apparatus, terminal and network side equipment, which are used to achieve reliable transmission when the number of repeated transmissions of the PDCCH is greater than 1.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a PDCCH transmission method, which is applied to a terminal, wherein the method includes:

[0005] receiving configuration information for repeated transmission of PDCCH between time slots sent by a network-side device;

[0006] Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0007] In the time slots where the at least two transmission opportunities are determined, the transmission resources corresponding to the time slots are used to monitor the transmission of the PDCCH.

[0008] Optionally, in the PDCCH transmission method, the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0009] Optionally, in the PDCCH transmission method, the transmission configuration includes at least one of the following:

[0010] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0011] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0012] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0013] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0014] The first time slot of repeated PDCCH transmission within a preset time period;

[0015] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0016] Transmission resources configured by network-side devices;

[0017] Transmission resources used for repeated PDCCH transmission;

[0018] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0019] Optionally, in the PDCCH transmission method, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0020] Optionally, in the PDCCH transmission method, wherein the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0021] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0022] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0023] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0024] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0025] Optionally, the PDCCH transmission method, wherein:

[0026] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

[0027] Optionally, the PDCCH transmission method further includes: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determining that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0028] Optionally, in the PDCCH transmission method, wherein the configuration information includes a first time slot for repeated PDCCH transmission within a preset time period, or includes a time slot in which a first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, includes:

[0029] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0030] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0031] Optionally, in the PDCCH transmission method, determining an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located includes:

[0032] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0033] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0034] Optionally, in the PDCCH transmission method, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0035] the timeframe within which repeated transmissions are performed;

[0036] the total number of repeated transmissions during the stated timeframe;

[0037] the time slot or symbol interval between each transmission opportunity;

[0038] The time slot or symbol interval between each repeated transmission.

[0039] Optionally, in the PDCCH transmission method, when the network side device is not configured with a terminal monitoring time slot format indication SFI indicating DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling within a preset time period, a time slot indicated by a high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0040] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0041] Optionally, the PDCCH transmission method, wherein determining that each K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH, includes:

[0042] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0043] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device include at least one of the following:

[0044] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0045] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0046] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0047] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device further include at least one of the following:

[0048] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0049] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0050] Optionally, in the PDCCH transmission method, determining, according to the configuration information, the transmission resource of the time slot where each transmission opportunity for repeated PDCCH transmission is located comprises at least one of the following:

[0051] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0052] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0053] Optionally, the PDCCH transmission method further includes:

[0054] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0055] Optionally, in the PDCCH transmission method, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0056] Obtaining transmission indication information indicated by the network side device through dynamic signaling;

[0057] The transmission indication information includes at least one of the following:

[0058] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0059] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0060] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0061] Optionally, in the PDCCH transmission method, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling, and downlink control information DCI signaling.

[0062] An embodiment of the present invention also provides another PDCCH transmission method, which is applied to a network-side device, wherein the method includes:

[0063] Sending configuration information for repeated transmission of PDCCH between time slots to the terminal;

[0064] Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0065] In the time slots where the at least two transmission opportunities are determined, transmission resources corresponding to the time slots are used to transmit the PDCCH.

[0066] Optionally, in the PDCCH transmission method, the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0067] Optionally, in the PDCCH transmission method, the transmission configuration includes at least one of the following:

[0068] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0069] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0070] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0071] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0072] The first time slot of repeated PDCCH transmission within a preset time period;

[0073] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0074] Transmission resources configured by network-side devices;

[0075] Transmission resources used for repeated PDCCH transmission;

[0076] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0077] Optionally, in the PDCCH transmission method, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0078] Optionally, in the PDCCH transmission method, wherein the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0079] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0080] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0081] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0082] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0083] Optionally, the PDCCH transmission method, wherein, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0084] Optionally, the PDCCH transmission method further includes: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determining that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0085] Optionally, in the PDCCH transmission method, wherein the configuration information includes a first time slot for repeated PDCCH transmission within a preset time period, or includes a time slot in which a first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, includes:

[0086] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0087] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0088] Optionally, in the PDCCH transmission method, determining an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located includes:

[0089] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0090] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0091] Optionally, in the PDCCH transmission method, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0092] the timeframe within which repeated transmissions are performed;

[0093] the total number of repeated transmissions during the stated timeframe;

[0094] the time slot or symbol interval between each transmission opportunity;

[0095] The time slot or symbol interval between each repeated transmission.

[0096] Optionally, in the PDCCH transmission method, when the network side device is not configured with a terminal monitoring time slot format indication SFI indicating DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling within a preset time period, a time slot indicated by a high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0097] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0098] Optionally, the PDCCH transmission method, wherein determining that each K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH, includes:

[0099] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0100] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device include at least one of the following:

[0101] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0102] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0103] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0104] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device further include at least one of the following:

[0105] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0106] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0107] Optionally, in the PDCCH transmission method, determining, according to the configuration information, the transmission resource of the time slot where each transmission opportunity for repeated PDCCH transmission is located comprises at least one of the following:

[0108] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0109] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0110] Optionally, the PDCCH transmission method further includes:

[0111] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0112] Optionally, in the PDCCH transmission method, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0113] Transmission instruction information indicated by dynamic signaling;

[0114] The transmission indication information includes at least one of the following:

[0115] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0116] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0117] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0118] Optionally, in the PDCCH transmission method, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and DCI signaling.

[0119] An embodiment of the present invention further provides a terminal, comprising: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein:

[0120] The transceiver is used to receive configuration information for repeated transmission of PDCCH between time slots sent by a network side device;

[0121] The processor is used to read the program in the memory and execute the following process:

[0122] Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0123] In the time slots where the at least two transmission opportunities are determined, transmission resources corresponding to the time slots are used to monitor the transmission of the PDCCH.

[0124] Optionally, the terminal, wherein the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0125] Optionally, in the terminal, the transmission configuration includes at least one of the following:

[0126] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0127] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0128] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0129] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0130] The first time slot of repeated PDCCH transmission within a preset time period;

[0131] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0132] Transmission resources configured by network-side devices;

[0133] Transmission resources used for repeated PDCCH transmission;

[0134] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0135] Optionally, the terminal, wherein the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0136] Optionally, in the terminal, when the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0137] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0138] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0139] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0140] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0141] Optionally, the terminal, wherein

[0142] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

[0143] Optionally, the terminal, wherein the processor is further used to: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0144] Optionally, in the terminal, wherein the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot in which the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, the processor determines, according to the configuration information, the time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0145] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0146] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0147] Optionally, in the terminal, the processor determining an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located includes:

[0148] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0149] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0150] Optionally, in the terminal, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0151] the timeframe within which repeated transmissions are performed;

[0152] the total number of repeated transmissions during the stated timeframe;

[0153] the time slot or symbol interval between each transmission opportunity;

[0154] The time slot or symbol interval between each repeated transmission.

[0155] Optionally, the terminal, wherein, when the network side device is not configured to monitor the time slot format indication SFI indicating DCI signaling of the terminal, the available time slot is a downlink time slot indicated by the high-layer signaling within a preset time period, a time slot indicated by the high-layer signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0156] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0157] Optionally, in the terminal, the processor determines that, in the available time slots, each K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH, including:

[0158] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0159] Optionally, in the terminal, the transmission resources configured by the network-side device include at least one of the following:

[0160] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0161] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0162] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0163] Optionally, in the terminal, the transmission resources configured by the network-side device further include at least one of the following:

[0164] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0165] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0166] Optionally, in the terminal, the processor determines, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0167] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0168] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0169] Optionally, in the terminal, the processor is further configured to:

[0170] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0171] Optionally, in the terminal, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission occurs in each transmission cycle, the processor is further configured to:

[0172] Obtaining transmission indication information indicated by the network side device through dynamic signaling;

[0173] The transmission indication information includes at least one of the following:

[0174] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0175] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0176] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0177] Optionally, in the terminal, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and downlink control information DCI signaling.

[0178] An embodiment of the present invention further provides a network side device, comprising: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein:

[0179] The transceiver is used to send configuration information for repeated transmission of PDCCH between time slots to the terminal;

[0180] The processor is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0181] In the time slots where the at least two transmission opportunities are determined, transmission resources corresponding to the time slots are used to transmit the PDCCH.

[0182] Optionally, the network side device, wherein the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0183] Optionally, in the network-side device, the transmission configuration includes at least one of the following:

[0184] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0185] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0186] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0187] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0188] The first time slot of repeated PDCCH transmission within a preset time period;

[0189] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0190] Transmission resources configured by network-side devices;

[0191] Transmission resources used for repeated PDCCH transmission;

[0192] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0193] Optionally, in the network side device, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0194] Optionally, in the network side device, when the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0195] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0196] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0197] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0198] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0199] Optionally, the network side device, wherein, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0200] Optionally, the network side device, wherein the processor is also used to: when the time slot where a transmission opportunity for repeated transmission of the PDCCH indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0201] Optionally, in the network side device, the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot of the first transmission opportunity for repeated PDCCH transmission within a preset time period, the processor determines, according to the configuration information, the time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0202] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0203] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0204] Optionally, in the network side device, the processor determines an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located, including:

[0205] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0206] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0207] Optionally, in the network side device, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0208] the timeframe within which repeated transmissions are performed;

[0209] the total number of repeated transmissions during the stated timeframe;

[0210] the time slot or symbol interval between each transmission opportunity;

[0211] The time slot or symbol interval between each repeated transmission.

[0212] Optionally, the network side device, wherein, when the network side device is not configured with a terminal monitoring time slot format indication SFI indication DCI signaling, the available time slot is a downlink time slot indicated by a high-layer signaling within a preset time period, a time slot indicated by a high-layer signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0213] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0214] Optionally, in the network side device, the processor determines that each K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH, including:

[0215] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0216] Optionally, in the network-side device, the transmission resources configured by the network-side device include at least one of the following:

[0217] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0218] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0219] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0220] Optionally, in the network-side device, the transmission resources configured by the network-side device further include at least one of the following:

[0221] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0222] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0223] Optionally, in the network side device, the processor determines, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0224] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0225] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0226] Optionally, in the network-side device, the processor is further configured to:

[0227] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0228] Optionally, in the network side device, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0229] Transmission instruction information indicated by dynamic signaling;

[0230] The transmission indication information includes at least one of the following:

[0231] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0232] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0233] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0234] Optionally, in the network side device, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and DCI signaling.

[0235] An embodiment of the present invention further provides a PDCCH transmission device, applied to a terminal, wherein the device includes:

[0236] An information receiving unit, configured to receive configuration information for repeated transmission of PDCCH between time slots sent by a network side device;

[0237] A first processing unit is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and a transmission resource of the time slot in which each transmission opportunity is located;

[0238] The monitoring unit is configured to monitor the transmission of the PDCCH in the time slots where the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots.

[0239] An embodiment of the present invention further provides a PDCCH transmission device, which is applied to a network-side device, wherein the device includes:

[0240] An information sending unit, configured to send configuration information for repeated transmission of the PDCCH between time slots to the terminal;

[0241] A second processing unit is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0242] The transmission unit is configured to transmit the PDCCH in the time slots where the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots.

[0243] An embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute any one of the above PDCCH transmission methods.

[0244] The beneficial effects of the above technical solution of the present invention are as follows:

[0245] By adopting the PDCCH transmission method described in the embodiment of the present invention, the terminal can determine the time slots of at least two transmission opportunities for repeated transmission of the PDCCH and the transmission resources of the time slot where each transmission opportunity is located based on the configuration information for repeated transmission of the PDCCH between time slots sent by the network side device, and use the transmission resources corresponding to the time slot to monitor the transmission of the PDCCH, so as to adapt to the situation where the number of repeated transmissions is greater than 1 when the network device configures the terminal to perform repeated transmission of the PDCCH between time slots, thereby ensuring the reliability of the PDCCH transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0246] Figure 1 A schematic diagram of a system architecture using the PDCCH transmission method according to an embodiment of the present invention;

[0247] Figure 2 Schematic diagram of a PDCCH transmission method according to one embodiment of the present invention;

[0248] Figure 3 This is a schematic diagram of a time slot using the PDCCH transmission method according to an embodiment of the present invention;

[0249] Figure 4 This is a second schematic diagram of a time slot using the PDCCH transmission method according to an embodiment of the present invention;

[0250] Figure 5 This is a third time slot diagram of the PDCCH transmission method according to an embodiment of the present invention;

[0251] Figure 6 FIG4 is a fourth time slot diagram of the PDCCH transmission method according to an embodiment of the present invention;

[0252] Figure 7 FIG5 is a fifth time slot diagram of the PDCCH transmission method according to an embodiment of the present invention;

[0253] Figure 8 FIG6 is a sixth time slot diagram of the PDCCH transmission method according to an embodiment of the present invention;

[0254] Figure 9 Schematic diagram of a flow chart of a PDCCH transmission method according to another embodiment of the present invention;

[0255] Figure 10 This is a schematic diagram of the structure of a terminal according to an embodiment of the present invention;

[0256] Figure 11 This is a schematic diagram of the structure of the network side device according to an embodiment of the present invention;

[0257] Figure 12 Schematic diagram of the structure of a PDCCH transmission device according to one embodiment of the present invention;

[0258] Figure 13 It is a structural diagram of a PDCCH transmission device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0259] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention and not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0260] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0261] The embodiments of the present invention provide a PDCCH transmission method and apparatus for achieving reliable transmission when the number of PDCCH repetition transmissions is greater than one.

[0262] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0263] The technical solution provided by the embodiment of the present invention can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems, etc. These various systems include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0264] like Figure 1 The figure shows the architecture of a wireless communication system using the PDCCH transmission method according to an embodiment of the present invention, including a network side device 10 and a terminal device (or terminal). For example, the terminal is denoted as UE11, and UE11 can be connected to the network side device 10. In actual applications, the connection between the above-mentioned devices can be a wireless connection. In order to conveniently and intuitively represent the connection relationship between the devices, Figure 1 Solid lines are used to indicate.

[0265] The terminal devices involved in the embodiments of the present invention may refer to devices that provide voice and / or data connectivity to users, handheld devices with wireless connection capabilities, or other processing devices connected to wireless modems. In different systems, the names of terminal devices may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a radio access network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they can be portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, but is not limited in the embodiments of the present invention.

[0266] The network-side device involved in the embodiments of the present invention may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, a base station may also be referred to as an access point, or may be a device in an access network that communicates with wireless terminal devices over the air interface through one or more sectors, or may be called something else. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface. For example, the network device involved in the embodiments of the present invention may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a node in wide-band code division multiple access (WCDMA), an evolutionary node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G next generation system, a home evolved node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present invention. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0267] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be either Single User MIMO (SU-MIMO) or Multi User MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or Massive-MIMO. It can also use diversity transmission, precoding, or beamforming.

[0268] The present invention addresses the problem that the existing PDCCH transmission mode cannot adapt to the situation of repeated PDCCH transmission, which affects the reliability of PDCCH transmission. The embodiment of the present invention provides a PDCCH transmission method.

[0269] To clearly illustrate the PDCCH transmission method described in the embodiments of the present invention, the meaning of the relevant features mentioned below is explained. A transmission opportunity for repeated PDCCH transmission may also be referred to as a transmission opportunity or a time slot. The scope of "available time slots" defined in the embodiments of the present invention includes the scope defined by available monitoring opportunities, available time units, available resources, or available symbols.

[0270] like Figure 2 As shown, the PDCCH transmission method described in one embodiment of the present invention is applied to a terminal, and the method includes:

[0271] S210, receiving configuration information for repeated transmission of PDCCH between time slots sent by a network side device;

[0272] S220, determining, based on the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0273] S230 , in the time slots where the at least two transmission opportunities are determined, use the transmission resources corresponding to the time slots to monitor the transmission of the PDCCH.

[0274] By adopting the PDCCH transmission method described in the embodiment of the present invention, configuration information for repeated transmission of PDCCH between time slots is sent to the terminal through the network side device, so that the terminal can determine the time slots of at least two transmission opportunities for repeated transmission of PDCCH and the transmission resources of the time slot where each transmission opportunity is located based on the configuration information, and use the corresponding transmission resources in the time slot to monitor the transmission of PDCCH, so as to adapt to the situation where the number of repeated transmissions is greater than 1 (the number of transmission opportunities is greater than 1) or is the configured K repetitions (the corresponding number of repetitions is greater than 2) when the network device configures the terminal to perform repeated transmission of PDCCH between time slots, thereby ensuring the reliability of PDCCH transmission.

[0275] Optionally, the configuration information includes signaling for indicating repeated transmission of the PDCCH between time slots and / or transmission configuration for repeated transmission of the PDCCH.

[0276] The configuration information enables the terminal to start or stop monitoring of repeated PDCCH transmission between time slots through signaling indicating repeated transmission of PDCCH between time slots.

[0277] Optionally, the signaling indicated in the configuration information may include different indication symbols, used to respectively instruct the terminal to enable inter-time slot PDCCH repetitive transmission and disable inter-time slot PDCCH repetitive transmission.

[0278] In an embodiment of the present invention, optionally, in the transmission configuration for repeated transmission of PDCCH included in the configuration information, the network side device configures the time slot information or period information of a transmission opportunity for the terminal, or configures the time slot information of the first transmission opportunity within a preset time period for the terminal, or configures the time slot information of two or more transmission opportunities for the terminal, or configures the transmission resources of one or more transmission opportunities for the terminal. The terminal determines the time slots of at least two transmission opportunities for repeated transmission of PDCCH and the transmission resources of the time slot where each transmission opportunity is located based on the above transmission configuration sent by the network side device.

[0279] Optionally, in step S220, the terminal determines, based on the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot where each transmission opportunity is located, including at least one of the following:

[0280] The terminal determines the time slots of other transmission opportunities in each repetition period based on the time slot or period information of a transmission opportunity configured by the network side device;

[0281] The terminal determines the time slots of other transmission opportunities for the first repeated transmission and the time slots of other transmission time slots for repeated transmission according to the time slot of the first transmission opportunity configured by the network side device;

[0282] The terminal determines the time slot information of each repeated transmission opportunity within a preset time according to the time slots of two or more transmission opportunities configured by the network side device;

[0283] The terminal determines transmission resources for one or more transmission opportunities.

[0284] Optionally, in the PDCCH transmission method described in the embodiment of the present invention, in step S210, the transmission configuration in the configuration information received by the terminal includes at least one of the following:

[0285] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0286] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0287] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0288] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0289] The first time slot of repeated PDCCH transmission within a preset time period;

[0290] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0291] Transmission resources configured by network-side devices;

[0292] Transmission resources used for repeated PDCCH transmission;

[0293] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0294] In the embodiment of the present invention, optionally, the configuration information is indicated by at least one of high-layer signaling, media access control layer (Media Access Control, MAC) control element (CE) signaling, and downlink control information (DCI) signaling.

[0295] The following describes, by way of example, how the terminal determines the time slots of at least two transmission opportunities for repeated PDCCH transmission and the transmission resources of the time slot where each transmission opportunity is located when the transmission configuration sent by the network side device includes different information in the PDCCH transmission method according to an embodiment of the present invention.

[0296] Example 1

[0297] In this embodiment, in step S210, the transmission configuration included in the configuration information includes:

[0298] The time slot of a transmission opportunity for repeated PDCCH transmission in each transmission cycle; or

[0299] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period.

[0300] In this embodiment, taking the configured maximum number of repeated transmissions of PDCCH as K times as an example, a transmission opportunity for repeated transmission configured by the network side device can be the time slot where the kth transmission opportunity is located, where k is greater than or equal to 1 and less than or equal to K.

[0301] Taking the configured maximum number of repeated transmissions of PDCCH as 2 as an example, that is, when PDCCH is transmitted, the number of repeated transmissions of PDCCH is 2 times. In this embodiment, the network side device configures a transmission time for repeated transmission as the time slot where the first time slot or the second time slot is located.

[0302] Optionally, the network device can also configure the transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period. For example, the network device can configure the first transmission opportunity for repeated transmission to occur at a certain period, such as a period value of P time slots (P is greater than or equal to 2 time slots), and can also configure the offset for the occurrence of the first transmission opportunity. In this way, the terminal can determine the time slot number of the first transmission opportunity for repeated transmission based on the configuration of the network device.

[0303] For example, if the period value P of the transmission period of the configured first transmission opportunity is 2 time slots, the time slot resources occupied by the first transmission opportunity can be determined as follows: Figure 3 As shown;

[0304] If the period value P of the transmission period of the configured first transmission opportunity is 4 time slots, the time slot resources occupied by the first transmission opportunity can be determined as follows: Figure 4 shown.

[0305] It should be noted that

[0306] Embodiments of the present invention Figure 3 and Figure 4 In the specification, "Opportunity 1" refers to the first transmission opportunity of repeated transmission, D represents the downlink time slot, and U represents the uplink time slot. In addition to the time slots occupied by the transmission opportunities configured by the network-side device, other unoccupied time slots can be uplink or downlink time slots. The terminal can determine the time slot number of the next transmission opportunity (such as the second or first time slot of the repeated transmission) based on predefined rules.

[0307] In this embodiment, when the configuration information includes a time slot of a transmission opportunity for repeated PDCCH transmission in each transmission period, in step S220, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes:

[0308] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0309] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0310] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0311] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0312] Taking the configured maximum number of repeated transmissions of the PDCCH repeated transmission as 2 times and k as 1 as an example, that is, if the configuration information includes the time slot of the first transmission opportunity of the PDCCH repeated transmission in each transmission period, the time slot of the first transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities after the first transmission opportunity are determined by one of the following methods:

[0313] The time slots where other transmission opportunities are located are the time slots where the first transmission opportunity is located;

[0314] The time slots where the other transmission opportunities are located are the next available time slots after the time slot where the first transmission opportunity is located.

[0315] If the configuration information includes the time slot of the last transmission opportunity of repeated PDCCH transmission in each transmission period, the time slot of the last transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities before the last transmission opportunity are determined by one of the following methods:

[0316] The time slots where other transmission opportunities are located are the time slots where the last transmission opportunity is located;

[0317] The time slots where other transmission opportunities are located are the previous available time slots of the time slot where the first transmission opportunity is located.

[0318] Specifically, if the network-side device is configured with the timeslot for the first transmission opportunity of each transmission cycle for repeated transmissions, the timeslot for the second transmission opportunity can be determined to be the timeslot for the first transmission opportunity, or the timeslot immediately following or following the timeslot for the first transmission opportunity, or the next N or following N available timeslots. In other words, if the next timeslot is unavailable, the network device can continue to determine available timeslots until an available timeslot is encountered. This ensures that the PDCCH has two transmission opportunities, ensuring a PDCCH repetition count of two.

[0319] When K is greater than 2, the configuration information includes the time slot in which the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, and when k is greater than or equal to 1 and less than or equal to K, the method for determining the time slots in which other transmission opportunities other than the kth transmission opportunity are located can refer to the above-mentioned specific implementation method and will not be described in detail here.

[0320] In an embodiment of the present invention, optionally, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0321] In another embodiment, optionally, when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, it is determined that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0322] For example, if the time slot where the k-th transmission opportunity indicated by the configuration information is located is an unavailable time slot, then the k-th transmission opportunity is determined to be transmitted on another transmission opportunity, or on the time slot where another transmission opportunity is located. For example, when k is 1, if the time slot where the first transmission opportunity is located is an unavailable time slot, then it can be transmitted on the time slot where the second transmission opportunity is located. If there are no other available transmission opportunities or available time slots within the preset time window, PDCCH can be repeatedly transmitted in the time slot where the first transmission opportunity is located. For example, each PDCCH is transmitted using a different monitoring opportunity or monitoring occasion of an SS set, or is transmitted using an unused SS set, or is transmitted on the same transmission resource using spatial division multiplexing of a single frequency network (SFN).

[0323] If the network device transmits DCI / PDCCH on two transmission opportunities within a time slot (for example, according to embodiment 2, the two transmission opportunities are determined to be merged into the same time slot), the configured transmission resources or the association relationship between the resources of repeated transmissions can be applied to the same time slot to determine two different transmission resources for transmission (for example, different CORESETs, SS sets or PDCCH candidates). In this embodiment of the present invention, optionally, the terminal can determine the time slots where other transmission opportunities are located based on the configuration of the time slot where the kth transmission opportunity of each repetition period configured by the network device is located, and the uplink and downlink (uplinkUL, downlink DL) configuration high-layer signaling (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) configured by the network device, or determine the time slots where other transmission opportunities are located based on the dynamic time slot format indication.

[0324] In one implementation mode, when the network side device does not configure the terminal to monitor the DCI signaling related to the slot format indication (SFI) (such as DCI format 2_0), the maximum number of repeated transmissions of the configured PDCCH repeated transmission is 2 times, and k is 1 as an example. The terminal first detects the next time slot of the time slot where the first transmission opportunity is located. If the next time slot is indicated as an uplink time slot or a flexible time slot by the higher layer signaling (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated), the next time slot will not be used for PDCCH repeated transmission; the terminal needs to make a judgment on the next time slot. Within a certain time window from the time slot where the first transmission opportunity is located (for example, L time slots, L can be greater than or less than the PDCCH repetition period, and the PDCCH repetition period can be greater than or equal to 2 time slots), if a high-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) indicates a downlink time slot, then the first downlink time slot in the time window, or the first downlink time slot with the SS set to be monitored, or the first downlink time slot with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity can be used for repeated transmission of PDCCH.

[0325] According to the above principles, if the network side device configures the terminal to transmit PDCCH repeatedly more than twice between time slots, the above method can also be used to determine multiple downlink time slots within the preset time window, or multiple downlink time slots with the SS set to be monitored, or multiple downlink time slots with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity for the transmission of multiple PDCCH repetitions.

[0326] In one embodiment, when there is no downlink time slot in the preset time window, the time slot where the first transmission opportunity is located can be used for repeated transmission of two or more PDCCHs (ie, the two or more transmission opportunities are all in the time slot where the first transmission opportunity is located).

[0327] The above takes the time slot in which the configuration information indicates the first transmission opportunity of PDCCH repeated transmission within a transmission period as an example to illustrate the method for determining the time slot of transmission opportunities other than the first transmission opportunity within a PDCCH repetition period. It should be noted that the method for determining the transmission opportunities other than the first transmission opportunity in all repetition periods can refer to the above method, and no further examples will be given here.

[0328] If the network device sends a slot format indication (SFI) signaling, DCIformat (format) is 2_0, the method is similar, except that the high-level signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated indicates that the time slot for downlink can be used for PDCCH repeated transmission, the high-level signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated indicates that it is flexible, and the time slot or symbol indicated by the SFI signaling as downlink can also be used for PDCCH repeated transmission. Taking the maximum number of repeated transmissions of the configured PDCCH repeated transmission as 2 times and k as 1 as an example, the time slot process for the terminal to determine the transmission opportunity can be:

[0329] The terminal first detects the time slot next to the time slot where the first transmission opportunity is located. If the next time slot is indicated as an uplink time slot by the high-layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, the next time slot will not be used for PDCCH repeated transmission; the terminal needs to continue to judge the next time slot. Within a certain time window (for example, L time slots) from the time slot in which the first transmission opportunity is located, if the high-level parameter tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated indicates a downlink time slot, or the high-level parameter tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated indicates flexible and is indicated as a downlink time slot by SFI signaling, then the first downlink time slot in the time window, or the first time slot with a downlink symbol, or the first downlink time slot or symbol with an SS set to be monitored, or the first downlink time slot or symbol with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity is used for repeated transmission of PDCCH.

[0330] Similarly, if the network-side device configures the terminal to have a PDCCH inter-slot retransmission count greater than 2, the terminal may determine the time slots of transmission opportunities other than the first transmission opportunity by: determining multiple downlink time slots within a period of time, or multiple downlink time slots with SS sets to be monitored, or multiple downlink time slots with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity for transmission of multiple PDCCH retransmission versions. If there is no downlink time slot or symbol within the time window, the time slot where the first transmission opportunity is located is used for the repetitive transmission of two or more PDCCHs, that is, the two or more transmission opportunities are transmitted in the time slot where the first transmission opportunity is configured.

[0331] In addition, the time slot where the second transmission opportunity is located can be determined to be the time slot where the first transmission opportunity is located. That is, when PDCCH transmission cannot be performed in the time slot where the second transmission opportunity is located, two repeated PDCCH / DCIs are transmitted in one time slot, converting the repeated transmission between time slots into repeated transmission within the time slot.

[0332] Optionally, if the time slot where the first transmission opportunity is located is an uplink time slot (ie, unavailable), the PDCCH transmitted on the first transmission opportunity may also be transmitted on the second transmission opportunity.

[0333] If both transmission opportunities are unavailable or the time slot where the first transmission opportunity is configured is unavailable, the PDCCH will not be transmitted in the period where the two transmission opportunities configured by the network device are located.

[0334] If the number of repeated transmissions is greater than 2, the terminal determines that the time slot of one transmission opportunity is the configured time slot, and the time slots of other transmission opportunities can be the configured time slot, or the first K-1 or last K-1 available time slots of the configured time slot, where K is the number of repeated transmissions between time slots.

[0335] If the network device has configured the timeslot for the second transmission opportunity for repeated transmissions, the method for determining the timeslot for the first transmission opportunity can be similar to the method described above. The timeslot for the first transmission opportunity can be determined as the timeslot for the second transmission opportunity, or the immediately preceding, immediately preceding, N timeslots, or N timeslots preceding the second transmission opportunity. That is, if the preceding timeslot is unavailable, the process continues until an available timeslot is encountered.

[0336] In an embodiment of the present invention, optionally, the available time slot can be: a downlink time slot, or a flexible time slot configured by high-layer signaling, or a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource (CORESET and / or SS set and / or PDCCH candidate) index as the kth transmission time slot (the time slot indicated in the transmission configuration).

[0337] In addition, when the number of repeated transmissions between time slots is 2, the time slot where the first transmission opportunity is located can also be determined as the time slot where the second transmission opportunity is located. That is, when PDCCH transmission cannot be performed in the time slot where the first transmission opportunity is located, one time slot is used to transmit two repeated PDCCH / DCIs, converting the repeated transmission between time slots into repeated transmission within a time slot.

[0338] If the time slot where the second transmission opportunity is located is an uplink time slot (ie, unavailable), the PDCCH transmitted on the second transmission opportunity may also be transmitted on the first transmission opportunity.

[0339] If both transmission opportunities are unavailable or the time slot in which the second transmission opportunity is configured is unavailable, the PDCCH will not be transmitted during the period in which the two transmission opportunities are configured by the network device. That is, if any transmission opportunity collides with an unavailable time slot or symbol, neither transmission opportunity will be used for repeated PDCCH transmission.

[0340] Example 2

[0341] In this embodiment, in step S210, the transmission configuration included in the configuration information includes:

[0342] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located; and / or

[0343] The transmission resources of the time slots where at least two transmission opportunities for repeated PDCCH transmission are located within the preset time period.

[0344] In this embodiment, the terminal may determine that the K transmission opportunities occupy K consecutive available time slots based on the time slots and / or transmission resources where the at least two transmission opportunities (eg, K) configured by the network side device are located.

[0345] Optionally, the network side device can configure the time slots occupied by repeated transmission within a preset time period for the terminal according to the uplink and downlink configuration and the available SS set, and / or the PDCCH transmission resources of each time slot. In this case, any transmission opportunity of repeated transmission may not occur at a certain period, such as Figure 5 The time slot where Rep is located can be used for repeated transmission, and the time slot where Non is located cannot be used for repeated transmission. The signaling format in the preset time period can be expressed as "RRRNNNRRRNRR".

[0346] Optionally, the time slots Rep used for repeated transmission in this embodiment may be further differentiated, such as Figure 6 As shown, time slot Rep1 and time slot Rep2 represent two transmission opportunities of a repeated transmission, and the signaling format in the preset time period can be expressed as "R1R2R1NNNR2R1R2NR1R2".

[0347] Or, if Figure 7 As shown, time slots or transmission opportunities with the same identifier (RepB and RepB) represent one inter-time slot repetition transmission.

[0348] In the embodiment of the present invention, optionally, the PDCCH transmission resource may include at least one of the following:

[0349] control resource set (CORESET);

[0350] SS set;

[0351] PDCCH candidate resources.

[0352] In the embodiment of the present invention, optionally, the PDCCH transmission resources (CORESET and / or SS set and / or PDCCH candidate) used in each time slot can also be configured along with the repeated transmission situation, and can also be configured with a certain periodicity. Figure 6For example, repeated transmissions within a preset time period can be configured as follows: R1 SS set a, R2 SS set b, R1 SS set c, N, N, N, R2 SS set d, R1 SS set a, R2 SS set c, N, R1 SS set a, R2SS set e. Alternatively, the repeated transmission timing and PDCCH transmission resources can be configured separately. For example, the transmission timing can be configured as "R1R2R1NNNR2R1R2NR1R2", and the transmission resources can be configured periodically. For example, a high-level parameter can be used to configure the index, period value, and offset of the SS set occupied by repeated transmissions within a preset time period.

[0353] In the present invention, the preset time period can be several time slots, more than ten time slots, or dozens of time slots or more. Similar to the uplink and downlink configuration of the indicator symbol in DCI format 2_0, the indicated time length is variable and is specifically related to the scheduling of the network side device.

[0354] In the embodiments of the present invention, the above configuration can be configured via high-level signaling, or can be configured via MACCE signaling or DCI signaling. For example, the configuration information takes effect some time after the network-side device sends the configuration information. The length of the configuration information is also variable and configurable.

[0355] By using the method in the second embodiment, compared with the method in the first embodiment, the time slots, transmission opportunities or PDCCH transmission resources configured by the network side device for repeated transmission can all be used, and the terminal only needs to transmit according to the configuration of the network side device.

[0356] Example 3

[0357] In this embodiment, in step S210, the transmission configuration included in the configuration information includes:

[0358] The first time slot of repeated PDCCH transmission within a preset time period; and / or

[0359] The time slot where the first transmission opportunity of repeated PDCCH transmission within the preset time period is located.

[0360] The PDCCH transmission method according to an embodiment of the present invention is used, wherein, in step S220, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes:

[0361] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0362] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0363] Optionally, determining that each K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH includes:

[0364] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0365] Using this embodiment, the terminal determines that the first time slot or the time slot of the first transmission opportunity is the configured time slot, and the other transmission opportunities are the K-1 available time slots after the configured time slot; in this way, the terminal determines that the K transmission opportunities for repeated transmission between each time slot occupy K available time slots.

[0366] Optionally, determining an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located includes:

[0367] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0368] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0369] Using the PDCCH transmission method described in this embodiment, the network side device configures or indicates the first time slot in a preset time period or a time slot in the time slot where the transmission opportunity is located. This is different from the configuration or indication of a time slot in each cycle within a period of time or the time slot where the transmission opportunity is located in the first embodiment. In the method of this embodiment three, the network side device configures or indicates the first time slot or the time slot where the first transmission opportunity is located among all time slots or transmission opportunities within a period of time, and the terminal determines the time slots where other time slots or transmission opportunities are located based on the first time slot or the time slot where the first transmission opportunity is located, and predefined rules.

[0370] In this third embodiment, the time information of the first transmission opportunity may not appear in a periodic form. The configuration information, activation information, or indication information takes effect within a period of time after the configuration information, activation information, or indication information is received. Figure 8For example, the network side device configures or indicates the time slot position of the first time slot for transmitting DCI 1. The terminal can then determine other time slots for repeated transmission between PDCCH time slots or other time slots for transmission opportunities based on the uplink and downlink configurations and / or the SS set configuration to be monitored.

[0371] In this embodiment, if the network side device configures or indicates the first time slot or the time slot where the first transmission opportunity is located within the preset time period, the terminal can determine the time slots where all transmission opportunities are located according to the following method:

[0372] First, the available time slots within a period of time after the first transmission opportunity are determined, and then every two available time slots are used to transmit two repeated transmissions of a DCI / PDCCH, such as Figure 8 As shown, the first two time slots are used to transmit DCI 1, the 3rd and 7th time slots are used to transmit DCI 2, and the 8th and 11th time slots are used to transmit DCI 3.

[0373] When the number of inter-slot retransmissions is greater than 2, for example, K times, the method is similar. The terminal first determines the available time slots within a period of time after the first transmission opportunity. Then, within the available time slots including the time slot of the first transmission opportunity, each of the K available time slots is used to transmit K repetitions of a DCI / PDCCH. In other words, the terminal determines that each K transmission opportunity occupies K consecutive available time slots.

[0374] In this embodiment of the present invention, the K consecutive available time slots may be physically discontinuous, but from the perspective of the available time slot numbering, they may be continuous. To avoid confusion, the available time slots may be numbered. For example, the time slot configured or indicated by the network device is the first time slot, and the subsequent available time slots are numbered 2, 3, 4, 5, and so on.

[0375] Specifically, the terminal can determine the time slot information of other transmission opportunities according to the relevant configuration information of the time slot of the first transmission opportunity of multiple PDCCH repeated transmissions within a preset time period configured by the network side device, and the uplink and downlink (uplink UL, downlink DL) configuration high-layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated or SFI indication configured by the network side device:

[0376] First, the terminal determines the time range of PDCCH repeated transmission (for example, several or a dozen or more time slots) based on the relevant configuration information of the time slot where the first transmission opportunity of multiple repeated transmissions within a preset time period configured by the network side device is located; then, based on the uplink and downlink configuration high-level signaling or SFI indication, the time slots or symbols that can be used for PDCCH repeated transmission within the time range of repeated transmission and the time slots occupied by each repeated transmission are determined.

[0377] Among them, the relevant configuration information of the time slot where the first transmission opportunity is located may include: the time range for repeated transmission (for example, several or more than a dozen time slots), the total number of repeated transmissions within the time range (for example, one repeated transmission requires the transmission of two identical DCIs or PDCCHs, and within a period of time, P such repeated transmissions will be transmitted, and P is a positive integer greater than or equal to 1). In this case, the terminal will determine the P such repeated transmissions within the time range of repeated transmission based on the uplink configuration high-level signaling or SFI indication; the relevant configuration information of the time slot where the first transmission opportunity is located may also not include the total number of repeated transmissions. In this way, the terminal needs to determine the total number of repeated transmissions within the time range, that is, all time slots within the time range are used for PDCCH repeated transmission, for example, the total number can be Q times.

[0378] The specific process of determining the time slots that can be used for PDCCH repeated transmission within the time range of repeated transmission and the time slots occupied by each repeated transmission according to the uplink and downlink configuration high-layer signaling or SFI indication is as follows:

[0379] The terminal first determines the time slots or symbols that can be used for repeated transmission of PDCCH within the time range based on the uplink and downlink configuration high-layer signaling or SFI indication. If the network device does not configure the terminal to monitor the SFI indication-related DCI signaling (such as DCIformat 2_0), the terminal only determines which time slots can be used for repeated transmission of PDCCH based on the high-layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated. For example, the time slots or flexible time slots indicated by the high-layer signaling as downlink can be used for repeated transmission of PDCCH, and for example, the time slots or flexible time slots indicated by the high-layer signaling as uplink cannot be used for repeated transmission of PDCCH. Whether the flexible time slot can be used for repeated transmission of PDCCH depends on the configuration of the network-side device or the predefined rules. Alternatively, the network-side device is configured as a downlink time slot and has a time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity can be used for repeated transmission of PDCCH.

[0380] If the network side device configures the terminal to monitor the SFI indication related DCI signaling (DCI format 2_0), then in addition to the downlink time slot determined by the above high-layer signaling, the high-layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated is configured as a flexible time slot and may also be used for PDCCH repeated transmission. Specifically, if the flexible symbol is further indicated by the SFI indication related DCI signaling (DCI format 2_0) as a time slot containing downlink symbols, or indicated as a time slot containing downlink symbols and having a SS set to be monitored, or indicated as a time slot containing downlink symbols and having the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity, it can also be used for PDCCH repeated transmission. The terminal will then determine the time slot occupied by each repeated transmission based on the number of repetitions of each repeated transmission (for example, the number configured by the network device or pre-defined, 2 times or more than 2 times, for example, K times), for example, it can be 2 or more consecutive time slots in the available time slots determined in the previous step ( Figure 8 Taking two repeated transmissions as an example, where time slots 1, 2, 3, 7, 8, and 11 can be used for PDCCH repeated transmissions, and the number of repeated transmissions is 2, the terminal can determine that the first and second time slots are used for one PDCCH repeated transmission, the third and seventh time slots are used for one PDCCH repeated transmission, and the eighth and eleventh time slots are used for one PDCCH repeated transmission. There can also be a certain interval between two repeated transmissions, such as M time slots or symbols, and there can also be a certain interval between each two total repeated transmissions, such as N time slots or symbols, which can be determined by the network side device side or according to predefined rules.

[0381] In the PDCCH transmission method described in the above embodiments of the present invention, when applied to embodiments 1 to 3, the available time slots determined to be capable of being used for repeated PDCCH transmission are at least one of: a downlink time slot, a flexible time slot configured by higher layer signaling, and a downlink time slot with an SS set to be monitored.

[0382] Unavailable time slots can be any of the following: uplink time slots configured by higher-layer signaling, flexible time slots, uplink time slots dynamically indicated by the DCI format, or flexible time slots. When the DCI format dynamically indicates a flexible time slot, further monitoring is required, such as determining whether the time slot includes both uplink and downlink symbols, to determine whether it can be used as an available time slot.

[0383] In the above-mentioned embodiments 1 to 3, for the flexible time slots configured by high-level signaling, if the terminal is configured to monitor the DCI format (i.e., used to dynamically indicate the uplink and downlink time slots), if the flexible time slots configured by high-level signaling are dynamically indicated as uplink time slots by the DCI format, they will not be used as any transmission opportunity for repeated transmission of the PDCCH.

[0384] By using the method described in the embodiment of the present invention, the terminal can determine the time slot used for PDCCH repeated transmission, and the number of repeated transmissions can be 2 times. At the same time, the network device will also send the corresponding DCI / PDCCH at the PDCCH repeated transmission timing determined by the terminal to ensure the transmission reliability of DCI / PDCCH.

[0385] In the present invention, available time slots can be further extended to available symbols / monitoring opportunities, etc. Similarly, unavailable time slots can be further extended to unavailable symbols / monitoring opportunities, etc. For example, if a time slot is a flexible time slot configured by RRC signaling and is dynamically indicated by the DCI format as containing both downlink symbols and uplink symbols, the method in this embodiment can be extended to determine resources such as time slots or symbols where transmission opportunities are located based on available symbols.

[0386] In the PDCCH transmission method according to an embodiment of the present invention, in step S210, the configuration information received from the network-side device further includes at least one of the following:

[0387] Transmission resources configured by network-side devices;

[0388] Transmission resources used for repeated PDCCH transmission;

[0389] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0390] Optionally, the transmission resources configured by the network side device in the configuration information or the transmission resources used for repeated PDCCH transmission include one or two transmission resources, and the transmission resources may be resources to be monitored or resources not to be monitored.

[0391] Optionally, the configuration information may further indicate whether the transmission resources of at least two transmission opportunities are the same, for example, it may indicate that the transmission resources of the first transmission opportunity are the same as the transmission resources of the second transmission opportunity.

[0392] That is, optionally, the transmission resources configured by the network-side device further include at least one of the following:

[0393] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0394] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0395] Optionally, the transmission resources configured by the network-side device include at least one of the following:

[0396] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0397] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0398] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0399] In the PDCCH transmission method according to an embodiment of the present invention, in step S220, determining, based on the configuration information, the transmission resource of the time slot in which each transmission opportunity for repeated PDCCH transmission occurs includes at least one of the following:

[0400] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0401] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0402] The following describes a method for a terminal to determine transmission resources for repeated PDCCH transmission in conjunction with Embodiments 1 to 3 of the present invention.

[0403] For example, when applied to embodiment 2, the terminal can determine the time slot used for repeated transmission of DCI / PDCCH. Through this embodiment, the terminal can further determine the transmission resources of DCI / PDCCH within a time slot (such as CORESET, SS set and / or PDCCH candidate index).

[0404] Optionally, the network side device may configure the same or different transmission resources for the two time slots of repeated PDCCH transmission, or configure transmission resources for only one transmission opportunity, and determine the transmission resources for the other transmission opportunity according to a predefined rule.

[0405] If the network device side has configured transmission resources for both transmission opportunities, after the terminal determines the time slot used for transmission, it can determine the transmission resources corresponding to each time slot. If the transmission resources corresponding to the time slot where the transmission is located are not in the state to be monitored (that is, the time slot is determined not to be in the state to be monitored based on the period and offset values ​​in the associated high-level parameter searchspace, for example, both the PDCCH candidate resources and the CORESET have SS sets associated with them), it is still determined that the network side device has sent DCI / PDCCH in the time slot, and the transmission resources used are the resources configured by the network side device, that is, even if the transmission resources are not in the state to be monitored configured by the searchspace, PDCCH transmission can be performed, that is, the terminal determines that the PDCCH transmission resources are the transmission resources configured for the two transmission opportunities.

[0406] If the network device configures the transmission resources for one transmission opportunity and the association relationship (link relationship, i.e., the relationship between the transmission resources) between two repeated transmissions, the terminal can also determine the transmission resources for the other transmission opportunity based on this. Similarly, PDCCH transmission can be performed even if the determined transmission resource is not in the monitoring state configured by the search space.

[0407] If the network device transmits DCI / PDCCH on two transmission opportunities within a time slot (for example, the two transmission opportunities are determined to be merged into the same time slot according to Example 2), the configured transmission resources or the association relationship between resources between repeated transmissions can be applied to the same time slot to determine two different transmission resources for transmission (for example, different CORESETs, SS sets or PDCCH candidates).

[0408] The network side device can also configure the CORESET, SS set and / or PDCCH candidate index for repeated transmission, that is, repeated transmission will only be performed in the resources used for repeated transmission. In this way, after determining the time slot where the repeated transmission is located, the terminal can determine the transmission resource as the corresponding resource for repeated transmission.

[0409] The network side device can also configure the PDCCH transmission method, such as repeated transmission between time slots and different time slots have the same PDCCH transmission resources, as well as the corresponding transmission resources, so that the terminal can also determine the transmission resources of the two transmission opportunities. In this case, the terminal does not expect the two transmission opportunities to be in the same time slot, or the terminal can abandon one repeated transmission (for example, abandon the transmission configured on an unavailable time slot or symbol), or the terminal determines that the network device side uses spatial division multiplexing to perform PDCCH repeated transmission, for example, it can be based on single frequency network (SFN) spatial division multiplexing, that is, two repeated transmissions occupy the same time-frequency resources and are transmitted by different transmission points.

[0410] The PDCCH transmission method according to the embodiment of the present invention, optionally, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0411] Obtaining transmission indication information indicated by the network side device through dynamic signaling;

[0412] The transmission indication information includes at least one of the following:

[0413] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0414] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0415] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0416] In this embodiment, after configuring the time slots and transmission resources used for one or two transmission opportunities, the network-side device can also use dynamic signaling (the transmission indication information) to indicate the transmission status of the second or other transmission opportunities. For example, it can instruct the terminal to abandon the second transmission opportunity (i.e., not transmit) or postpone transmission. This dynamic signaling (transmission indication information) can be indicated to the terminal using a separate information field or can be indicated together with the common beam (TCI status) indication field, that is, using a joint coding approach.

[0417] By adopting the PDCCH transmission method described in the embodiment of the present invention, configuration information for repeated transmission of PDCCH between time slots is sent to the terminal through the network side device, so that the terminal can determine the time slots of at least two transmission opportunities for repeated transmission of PDCCH and the transmission resources of the time slot where each transmission opportunity is located based on the configuration information, and use the corresponding transmission resources in the time slot to monitor the transmission of PDCCH, so as to adapt to the situation where the number of repeated transmissions is greater than 1 (the number of transmission opportunities is greater than 1) or is the configured K repetitions (the corresponding number of repetitions is greater than 2) when the network device configures the terminal to perform repeated transmission of PDCCH between time slots, thereby ensuring the reliability of PDCCH transmission.

[0418] The embodiment of the present invention also provides a PDCCH transmission method, which is applied to a network side device, such as Figure 9 As shown, the method includes:

[0419] S910, sending configuration information for repeated transmission of the PDCCH between time slots to the terminal;

[0420] S920, determining, based on the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0421] S930: In the time slots where the at least two transmission opportunities are determined, use the transmission resources corresponding to the time slots to transmit the PDCCH.

[0422] Using the PDCCH transmission method described in this embodiment, the network side device sends configuration information for repeated transmission of PDCCH between time slots to the terminal, so that the terminal can determine the time slots of at least two transmission opportunities for repeated transmission of PDCCH and the transmission resources of the time slot where each transmission opportunity is located based on the configuration information, and use the corresponding transmission resources in the time slot to monitor the transmission of PDCCH, so as to adapt to the situation when the network device configures the terminal to perform repeated transmission of PDCCH between time slots, and the number of repeated transmissions is greater than 1 (the number of transmission opportunities is greater than 1) or is the configured K repetitions (the corresponding number of repetitions is greater than 2), thereby ensuring the reliability of PDCCH transmission.

[0423] Optionally, in the PDCCH transmission method, the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0424] Optionally, in the PDCCH transmission method, the transmission configuration includes at least one of the following:

[0425] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0426] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0427] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0428] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0429] The first time slot of repeated PDCCH transmission within a preset time period;

[0430] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0431] Transmission resources configured by network-side devices;

[0432] Transmission resources used for repeated PDCCH transmission;

[0433] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0434] Optionally, in the PDCCH transmission method, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0435] Optionally, in the PDCCH transmission method, wherein the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0436] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0437] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0438] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0439] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0440] Optionally, the PDCCH transmission method, wherein, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0441] Optionally, the PDCCH transmission method further includes: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determining that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0442] Optionally, in the PDCCH transmission method, wherein the configuration information includes a first time slot for repeated PDCCH transmission within a preset time period, or includes a time slot in which a first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, includes:

[0443] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0444] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0445] Optionally, in the PDCCH transmission method, determining an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located includes:

[0446] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0447] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0448] Optionally, in the PDCCH transmission method, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0449] the timeframe within which repeated transmissions are performed;

[0450] the total number of repeated transmissions during the stated timeframe;

[0451] the time slot or symbol interval between each transmission opportunity;

[0452] The time slot or symbol interval between each repeated transmission.

[0453] Optionally, in the PDCCH transmission method, when the network side device is not configured with a terminal monitoring time slot format indication SFI indicating DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling within a preset time period, a time slot indicated by a high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0454] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0455] Optionally, the PDCCH transmission method, wherein determining that each K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH, includes:

[0456] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0457] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device include at least one of the following:

[0458] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0459] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0460] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0461] Optionally, in the PDCCH transmission method, the transmission resources configured by the network-side device further include at least one of the following:

[0462] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0463] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0464] Optionally, in the PDCCH transmission method, determining, according to the configuration information, the transmission resource of the time slot where each transmission opportunity for repeated PDCCH transmission is located comprises at least one of the following:

[0465] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0466] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0467] Optionally, the PDCCH transmission method further includes:

[0468] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0469] Optionally, in the PDCCH transmission method, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0470] Transmission instruction information indicated by dynamic signaling;

[0471] The transmission indication information includes at least one of the following:

[0472] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0473] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0474] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0475] Optionally, in the PDCCH transmission method, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and DCI signaling.

[0476] One embodiment of the present invention further provides a terminal, such as Figure 10 As shown, it includes: a transceiver 1010, a memory 1020, a processor 1030 and a computer program stored in the memory and capable of running on the processor; it is characterized in that,

[0477] The transceiver 1010 is configured to receive configuration information for repeated transmission of the PDCCH between time slots sent by a network side device;

[0478] The processor 1030 is used to read the program in the memory and execute the following process:

[0479] Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0480] In the time slots where the at least two transmission opportunities are determined, transmission resources corresponding to the time slots are used to monitor the transmission of the PDCCH.

[0481] Optionally, the terminal, wherein the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0482] Optionally, in the terminal, the transmission configuration includes at least one of the following:

[0483] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0484] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0485] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0486] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0487] The first time slot of repeated PDCCH transmission within a preset time period;

[0488] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0489] Transmission resources configured by network-side devices;

[0490] Transmission resources used for repeated PDCCH transmission;

[0491] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0492] Optionally, the terminal, wherein the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0493] Optionally, in the terminal, when the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0494] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0495] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0496] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0497] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0498] Optionally, the terminal, wherein

[0499] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

[0500] Optionally, the terminal, wherein the processor 1030 is further used to: when a time slot where a transmission opportunity for repeated transmission of the PDCCH indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0501] Optionally, in the terminal, wherein the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot in which the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, the processor determines, according to the configuration information, the time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0502] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0503] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0504] Optionally, in the terminal, the processor 1030 determines an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located, including:

[0505] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0506] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0507] Optionally, in the terminal, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0508] the timeframe within which repeated transmissions are performed;

[0509] the total number of repeated transmissions during the stated timeframe;

[0510] the time slot or symbol interval between each transmission opportunity;

[0511] The time slot or symbol interval between each repeated transmission.

[0512] Optionally, the terminal, wherein, when the network side device is not configured to monitor the time slot format indication SFI indicating DCI signaling of the terminal, the available time slot is a downlink time slot indicated by the high-layer signaling within a preset time period, a time slot indicated by the high-layer signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0513] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0514] Optionally, in the terminal, the processor 1030 determines that, in the available time slots, each K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH, including:

[0515] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0516] Optionally, in the terminal, the transmission resources configured by the network-side device include at least one of the following:

[0517] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0518] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0519] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0520] Optionally, in the terminal, the transmission resources configured by the network-side device further include at least one of the following:

[0521] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0522] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0523] Optionally, in the terminal, the processor 1030 determines, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0524] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0525] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0526] Optionally, in the terminal, the processor 1030 is further configured to:

[0527] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0528] Optionally, in the terminal, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission occurs in each transmission cycle, the processor is further configured to:

[0529] Obtaining transmission indication information indicated by the network side device through dynamic signaling;

[0530] The transmission indication information includes at least one of the following:

[0531] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0532] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0533] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0534] Optionally, in the terminal, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and downlink control information DCI signaling.

[0535] In the terminal according to the embodiment of the present invention, the transceiver 1010 is configured to receive and send data under the control of the processor 1030 .

[0536] Among them, Figure 10In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1030 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1010 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 1040 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0537] The processor 1030 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1030 when performing operations.

[0538] Optionally, the processor 1030 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0539] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present invention according to the obtained executable instructions. The processor and the memory can also be physically separated.

[0540] The embodiment of the present invention also provides a network side device, such as Figure 11 As shown, it includes: a transceiver 1110, a memory 1120, a processor 1130 and a computer program stored in the memory and capable of running on the processor; wherein,

[0541] The transceiver 1110 is used to send configuration information for repeated transmission of PDCCH between time slots to the terminal;

[0542] The processor 1130 is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0543] In the time slots where the at least two transmission opportunities are determined, transmission resources corresponding to the time slots are used to transmit the PDCCH.

[0544] Optionally, the network side device, wherein the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0545] Optionally, in the network-side device, the transmission configuration includes at least one of the following:

[0546] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0547] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0548] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0549] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0550] The first time slot of repeated PDCCH transmission within a preset time period;

[0551] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0552] Transmission resources configured by network-side devices;

[0553] Transmission resources used for repeated PDCCH transmission;

[0554] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0555] Optionally, in the network side device, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0556] Optionally, in the network side device, when the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes:

[0557] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0558] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0559] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0560] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0561] Optionally, the network side device, wherein, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0562] Optionally, the network side device, wherein the processor 1130 is further used to: when a time slot where a transmission opportunity for repeated transmission of the PDCCH indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0563] Optionally, in the network side device, the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot of the first transmission opportunity for repeated PDCCH transmission within a preset time period, the processor determines, according to the configuration information, the time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0564] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0565] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0566] Optionally, in the network side device, the processor 1130 determines an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located, including:

[0567] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0568] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0569] Optionally, in the network side device, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0570] the timeframe within which repeated transmissions are performed;

[0571] the total number of repeated transmissions during the stated timeframe;

[0572] the time slot or symbol interval between each transmission opportunity;

[0573] The time slot or symbol interval between each repeated transmission.

[0574] Optionally, the network side device, wherein, when the network side device is not configured with a terminal monitoring time slot format indication SFI indication DCI signaling, the available time slot is a downlink time slot indicated by a high-layer signaling within a preset time period, a time slot indicated by a high-layer signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0575] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0576] Optionally, in the network side device, the processor 1130 determines that, in the available time slots, each K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH, including:

[0577] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0578] Optionally, in the network-side device, the transmission resources configured by the network-side device include at least one of the following:

[0579] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0580] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0581] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0582] Optionally, in the network-side device, the transmission resources configured by the network-side device further include at least one of the following:

[0583] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0584] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0585] Optionally, in the network side device, the processor 1130 determines, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0586] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0587] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0588] Optionally, in the network side device, the processor 1130 is further configured to:

[0589] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0590] Optionally, in the network side device, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the method further includes:

[0591] Transmission instruction information indicated by dynamic signaling;

[0592] The transmission indication information includes at least one of the following:

[0593] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0594] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0595] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0596] Optionally, in the network side device, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and DCI signaling.

[0597] In the network-side device described in the embodiment of the present invention, the transceiver 1110 is configured to receive and send data under the control of the processor 1130 .

[0598] Among them, Figure 11 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1130 and various circuits of memory represented by memory 1120 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 1130 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1130 when performing operations.

[0599] The processor 1130 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0600] The embodiment of the present invention further provides a PDCCH transmission device, which is applied to a terminal, such as Figure 12 As shown, the device includes:

[0601] The information receiving unit 1210 is configured to receive configuration information for repeated transmission of the PDCCH between time slots sent by a network side device;

[0602] The first processing unit 1220 is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0603] The monitoring unit 1230 is configured to monitor the transmission of the PDCCH in the time slots where the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots.

[0604] Optionally, in the PDCCH transmission device, the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0605] Optionally, in the PDCCH transmission device, the transmission configuration includes at least one of the following:

[0606] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0607] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0608] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0609] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0610] The first time slot of repeated PDCCH transmission within a preset time period;

[0611] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0612] Transmission resources configured by network-side devices;

[0613] Transmission resources used for repeated PDCCH transmission;

[0614] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0615] Optionally, in the PDCCH transmission device, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0616] Optionally, in the PDCCH transmission device, when the configuration information includes a time slot in which a transmission opportunity for repeated PDCCH transmission occurs in each transmission period, the first processing unit 1220 determines, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0617] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0618] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0619] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0620] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0621] Optionally, the PDCCH transmission device, wherein:

[0622] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

[0623] Optionally, the PDCCH transmission device, wherein the first processing unit 1220 is further used to: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0624] Optionally, in the PDCCH transmission device, wherein the configuration information includes a first time slot for repeated PDCCH transmission within a preset time period, or includes a time slot for a first transmission opportunity for repeated PDCCH transmission within a preset time period, the first processing unit 1220 determines, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0625] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0626] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0627] Optionally, in the PDCCH transmission device, the first processing unit 1220 determines an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located, including:

[0628] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0629] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0630] Optionally, in the PDCCH transmission device, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0631] the timeframe within which repeated transmissions are performed;

[0632] the total number of repeated transmissions during the stated timeframe;

[0633] the time slot or symbol interval between each transmission opportunity;

[0634] The time slot or symbol interval between each repeated transmission.

[0635] Optionally, in the PDCCH transmission device, when the network side device is not configured with a terminal monitoring time slot format indication SFI indicating DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling within a preset time period, a time slot indicated by a high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0636] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0637] Optionally, in the PDCCH transmission device, the first processing unit 1220 determines that each K consecutive available time slots in the available time slots are used for transmitting K repeated transmissions of a PDCCH, including:

[0638] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0639] Optionally, in the PDCCH transmission apparatus, the transmission resources configured by the network-side device include at least one of the following:

[0640] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0641] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0642] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0643] Optionally, in the PDCCH transmission apparatus, the transmission resources configured by the network-side device further include at least one of the following:

[0644] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0645] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0646] Optionally, in the PDCCH transmission device, the first processing unit 1220 determines, according to the configuration information, the transmission resource of the time slot where each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0647] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0648] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0649] Optionally, in the PDCCH transmission device, the first processing unit 1220 is further configured to:

[0650] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0651] Optionally, in the PDCCH transmission device, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the information receiving unit 1210 is further configured to:

[0652] Obtaining transmission indication information indicated by the network side device through dynamic signaling;

[0653] The transmission indication information includes at least one of the following:

[0654] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0655] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0656] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0657] Optionally, in the PDCCH transmission device, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling, and downlink control information DCI signaling.

[0658] One embodiment of the present invention further provides a PDCCH transmission device, which is applied to a network side device, such as Figure 13 As shown, the device includes:

[0659] The information sending unit 1310 is configured to send configuration information for repeated transmission of the PDCCH between time slots to the terminal;

[0660] The second processing unit 1320 is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located;

[0661] The transmission unit 1330 is configured to transmit the PDCCH in the time slots where the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots.

[0662] Optionally, in the PDCCH transmission device, the configuration information includes signaling for indicating repeated transmission between PDCCH time slots and / or transmission configuration for repeated transmission of PDCCH.

[0663] Optionally, in the PDCCH transmission device, the transmission configuration includes at least one of the following:

[0664] The time slot where a PDCCH is repeatedly transmitted in each transmission cycle;

[0665] The transmission period or offset of a transmission opportunity for repeated PDCCH transmission within each transmission period;

[0666] The time slots in which at least two transmission opportunities for repeated PDCCH transmission within a preset time period are located;

[0667] Transmission resources of the time slots of at least two transmission opportunities for repeated PDCCH transmission within a preset time period;

[0668] The first time slot of repeated PDCCH transmission within a preset time period;

[0669] The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period;

[0670] Transmission resources configured by network-side devices;

[0671] Transmission resources used for repeated PDCCH transmission;

[0672] The association relationship between transmission resources at different transmission opportunities for repeated PDCCH transmission.

[0673] Optionally, in the PDCCH transmission device, the transmission resources include at least one of a control resource set CORESET, a search space set SS set and a PDCCH candidate resource.

[0674] Optionally, in the PDCCH transmission device, when the configuration information includes a time slot in which a transmission opportunity for repeated PDCCH transmission occurs in each transmission period, the second processing unit 1320 determines, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0675] If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods:

[0676] The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located;

[0677] The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity;

[0678] The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

[0679] Optionally, the PDCCH transmission device, wherein, if the configuration information includes the time slot where the kth transmission opportunity for repeated PDCCH transmission is located in each transmission cycle, when the available time slot does not exist in the preset time window, the time slot where other transmission opportunities are located is the time slot where the kth transmission opportunity is located.

[0680] Optionally, the PDCCH transmission device, wherein the second processing unit 1320 is further used to: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determine that a transmission opportunity indicated by the configuration information is transmitted at another transmission opportunity or at a time slot where another transmission opportunity is located.

[0681] Optionally, in the PDCCH transmission device, wherein the configuration information includes a first time slot for repeated PDCCH transmission within a preset time period, or includes a time slot for a first transmission opportunity for repeated PDCCH transmission within a preset time period, the second processing unit 1320 determines, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission, including:

[0682] Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located;

[0683] It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

[0684] Optionally, in the PDCCH transmission device, the second processing unit 1320 determines an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located, including:

[0685] Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device;

[0686] According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

[0687] Optionally, in the PDCCH transmission device, the configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following:

[0688] the timeframe within which repeated transmissions are performed;

[0689] the total number of repeated transmissions during the stated timeframe;

[0690] the time slot or symbol interval between each transmission opportunity;

[0691] The time slot or symbol interval between each repeated transmission.

[0692] Optionally, in the PDCCH transmission device, when the network side device is not configured with a terminal monitoring time slot format indication SFI indicating DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling within a preset time period, a time slot indicated by a high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located;

[0693] When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

[0694] Optionally, in the PDCCH transmission device, the second processing unit 1320 determines that each K consecutive available time slots in the available time slots are used for transmitting K repeated transmissions of a PDCCH, including:

[0695] The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

[0696] Optionally, in the PDCCH transmission apparatus, the transmission resources configured by the network-side device include at least one of the following:

[0697] The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity;

[0698] The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity;

[0699] The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

[0700] Optionally, in the PDCCH transmission apparatus, the transmission resources configured by the network-side device further include at least one of the following:

[0701] The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same;

[0702] The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

[0703] Optionally, in the PDCCH transmission device, the second processing unit 1320 determines, according to the configuration information, the transmission resource of the time slot where each transmission opportunity for repeated PDCCH transmission is located, including at least one of the following:

[0704] In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information;

[0705] In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

[0706] Optionally, in the PDCCH transmission device, the second processing unit 1320 is further configured to:

[0707] If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

[0708] Optionally, in the PDCCH transmission device, when the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission is located in each transmission period, the information sending unit 1310 is further configured to:

[0709] Transmission instruction information indicated by dynamic signaling;

[0710] The transmission indication information includes at least one of the following:

[0711] Indicates the time slots for repeated PDCCH transmission at other transmission opportunities;

[0712] Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities;

[0713] Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

[0714] Optionally, in the PDCCH transmission device, the configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling and DCI signaling.

[0715] It should be noted here that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0716] It should be noted that the division of units in the embodiments of the present application is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0717] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0718] One embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to cause the processor to execute the PDCCH transmission method as described in any one of the above items. The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as a floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0719] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that contain computer-usable program code.

[0720] The present invention is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0721] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if such changes and modifications of the present invention fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A PDCCH transmission method, applied to a terminal, characterized in that: The method comprises: receiving configuration information for repeated transmission of PDCCH between time slots sent by a network-side device; Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located; In the time slots where the at least two transmission opportunities are determined, monitoring the transmission of the PDCCH using transmission resources corresponding to the time slots; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

2. The PDCCH transmission method according to claim 1, wherein: The transmission resources include at least one of a control resource set CORESET, a search space set SS set, and a PDCCH candidate resource.

3. The PDCCH transmission method according to claim 1, wherein: When the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes: If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods: The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located; The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity; The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

4. The PDCCH transmission method according to claim 3, wherein: If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

5. The PDCCH transmission method according to claim 3, wherein: The method further includes: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determining that the transmission opportunity indicated by the configuration information is transmitted on another transmission opportunity or on a time slot where another transmission opportunity is located.

6. The PDCCH transmission method according to claim 1, wherein: The available time slots within a preset time period after determining the first time slot or the time slot where the first transmission opportunity is located include: Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device; According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

7. The PDCCH transmission method according to claim 6, wherein: The configuration information related to the first time slot or the time slot where the first transmission opportunity is located includes at least one of the following: the timeframe within which repeated transmissions are performed; the total number of repeated transmissions during the stated timeframe; the time slot or symbol interval between each transmission opportunity; The time slot or symbol interval between each repeated transmission.

8. The PDCCH transmission method according to any one of claims 3 to 6, characterized in that: In the case where the network side device is not configured with the terminal monitoring time slot format indication SFI indication DCI signaling, the available time slot is the downlink time slot indicated by the high-level signaling within the preset time period, the time slot indicated by the high-level signaling that is flexible and pre-configured to be used for PDCCH transmission, the downlink time slot with the SS set to be monitored, or the time slot indicated by the transmission configuration or the downlink time slot with the same PDCCH transmission resource as the PDCCH transmission in the time slot where the transmission opportunity is located; When the network side device configures the terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by the high-level signaling within a preset time period, a time slot indicated by the high-level signaling that is flexible and preset to be used for PDCCH transmission, a time slot indicated by the high-level signaling as a flexible time slot and indicated by the SFI as a time slot with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resources as the time slot indicated by the transmission configuration or the time slot where the transmission opportunity is located.

9. The PDCCH transmission method according to claim 1, wherein: Determining that each of K consecutive available time slots in the available time slots is used to transmit K repeated transmissions of a PDCCH, including: The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

10. The PDCCH transmission method according to claim 1, wherein: The transmission resources configured by the network-side device include at least one of the following: The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity; The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity; The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

11. The PDCCH transmission method according to claim 10, wherein: The transmission resources configured by the network-side device also include at least one of the following: The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same; The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

12. The PDCCH transmission method according to claim 10, wherein: Determining, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located includes at least one of the following: In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information; In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

13. The PDCCH transmission method according to claim 12, wherein: The method further comprises: If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

14. The PDCCH transmission method according to claim 1, wherein: When the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission occurs in each transmission period, the method further includes: Obtaining transmission indication information indicated by the network side device through dynamic signaling; The transmission indication information includes at least one of the following: Indicates the time slots for repeated PDCCH transmission at other transmission opportunities; Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities; Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

15. The PDCCH transmission method according to claim 1, wherein: The configuration information is indicated by at least one of high-layer signaling, medium access control layer control element MAC CE signaling, and downlink control information DCI signaling.

16. A PDCCH transmission method, applied to a network side device, characterized in that: The method comprises: Sending configuration information for repeated transmission of PDCCH between time slots to the terminal; Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located; In the time slots where the at least two transmission opportunities are determined, using transmission resources corresponding to the time slots, to transmit the PDCCH; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

17. The PDCCH transmission method according to claim 16, wherein: When the configuration information includes a time slot in which one transmission opportunity for repeated PDCCH transmission occurs in each transmission period, determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission includes: If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission period, the time slot of the kth transmission opportunity is determined to be the time slot indicated in the configuration information, and the time slots of other transmission opportunities are determined by using one of the following methods: The time slots where other transmission opportunities are located are the time slots where the kth transmission opportunity is located; The time slots of other transmission opportunities are the previous time slot or the next time slot of the time slot of the kth transmission opportunity; The time slots where other transmission opportunities are located include k-1 available time slots before the time slot where the kth transmission opportunity is located and Kk available time slots after the time slot where the kth transmission opportunity is located; where K is the maximum number of repeated transmissions of PDCCH, and k is greater than or equal to 1 and less than or equal to K.

18. The PDCCH transmission method according to claim 17, wherein: If the configuration information includes the time slot of the kth transmission opportunity for repeated PDCCH transmission in each transmission cycle, when there is no available time slot in the preset time window, the time slot of other transmission opportunities is the time slot of the kth transmission opportunity.

19. The PDCCH transmission method according to claim 17, wherein: The method further includes: when a time slot where a transmission opportunity for repeated PDCCH transmission indicated by the configuration information is located is an unavailable time slot, determining that the transmission opportunity indicated by the configuration information is transmitted on another transmission opportunity or on a time slot where another transmission opportunity is located.

20. The PDCCH transmission method according to claim 16, wherein: The available time slots within a preset time period after determining the first time slot or the time slot where the first transmission opportunity is located include: Determine the time range for repeated PDCCH transmission according to the relevant configuration information of the first time slot for repeated PDCCH transmission or the time slot where the first transmission opportunity is located within the preset time period configured by the network side device; According to uplink and downlink configuration higher layer signaling, SFI indication or PDCCH transmission resources, an available time slot that can be used for repeated PDCCH transmission within the time range is determined.

21. The PDCCH transmission method according to claim 16, wherein: Determining that each of K consecutive available time slots in the available time slots is used to transmit K repeated transmissions of a PDCCH, including: The time slot occupied by each repeated transmission is determined according to the number of repetitions K required for each repeated transmission, and every K consecutive available time slots are used to transmit K repeated transmissions of a PDCCH.

22. The PDCCH transmission method according to claim 17, wherein: The transmission resources configured by the network-side device include at least one of the following: The transmission resources configured by the network-side device are the transmission resources configured for one transmission opportunity; The transmission resources configured by the network-side device are the transmission resources configured for each transmission opportunity; The transmission resources configured by the network side device are transmission resources configured for repeated PDCCH transmission.

23. The PDCCH transmission method according to claim 22, characterized in that: The transmission resources configured by the network-side device also include at least one of the following: The transmission resources used for different transmission opportunities of repeated PDCCH transmission are the same; The transmission resources used for different transmission occasions of repeated PDCCH transmission are different.

24. The PDCCH transmission method according to claim 22, wherein: Determining, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity for repeated PDCCH transmission is located includes at least one of the following: In the configuration information, the transmission resources configured by the network side device are transmission resources configured for each transmission opportunity, and the transmission resources corresponding to the time slot where each transmission opportunity is located are determined according to the configuration information; In the configuration information, when the transmission resources configured by the network side device are transmission resources configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for repeated PDCCH transmission, the transmission resources corresponding to the time slot in which another transmission opportunity is located are determined based on the transmission resources of one transmission opportunity configured in the configuration information and the association relationship.

25. The PDCCH transmission method according to claim 24, characterized in that: The method further comprises: If the determined transmission resource is not in the to-be-monitored state configured by the search space set SS set, it is determined that the corresponding transmission resource is also used for PDCCH transmission.

26. The PDCCH transmission method according to claim 17, wherein: When the transmission configuration includes a time slot where a transmission opportunity for repeated PDCCH transmission occurs in each transmission period, the method further includes: Transmission instruction information indicated by dynamic signaling; The transmission indication information includes at least one of the following: Indicates the time slots for repeated PDCCH transmission at other transmission opportunities; Indicates the transmission resources for repeated PDCCH transmission at other transmission opportunities; Instruct other transmission opportunities to abandon or postpone PDCCH retransmission.

27. A terminal comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: The transceiver is used to receive configuration information for repeated transmission of PDCCH between time slots sent by a network side device; The processor is used to read the program in the memory and execute the following process: Determining, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located; In the time slots where the at least two transmission opportunities are determined, monitoring the transmission of the PDCCH using transmission resources corresponding to the time slots; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

28. A network-side device, comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: The transceiver is used to send configuration information for repeated transmission of PDCCH between time slots to the terminal; The processor is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located; In the time slots where the at least two transmission opportunities are determined, using transmission resources corresponding to the time slots, to transmit the PDCCH; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

29. A PDCCH transmission device, applied to a terminal, characterized in that: The device comprises: An information receiving unit, configured to receive configuration information for repeated transmission of PDCCH between time slots sent by a network side device; A first processing unit is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and a transmission resource of the time slot in which each transmission opportunity is located; A monitoring unit, configured to monitor the transmission of the PDCCH in the time slots where the at least two transmission opportunities are determined, using the transmission resources corresponding to the time slots; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

30. A PDCCH transmission device, applied to a network side device, characterized in that: The device comprises: An information sending unit, configured to send configuration information for repeated transmission of the PDCCH between time slots to the terminal; A second processing unit is configured to determine, according to the configuration information, time slots of at least two transmission opportunities for repeated PDCCH transmission and transmission resources of the time slot in which each transmission opportunity is located; A transmission unit, configured to transmit the PDCCH in the time slots where the at least two transmission opportunities are determined, using transmission resources corresponding to the time slots; The configuration information includes a transmission configuration for repeated transmission of the PDCCH, or includes signaling for indicating repeated transmission between PDCCH time slots and a transmission configuration for repeated transmission of the PDCCH; The transmission configuration includes at least one of the following: The time slot where a PDCCH is repeatedly transmitted in each transmission cycle; The first time slot of repeated PDCCH transmission within a preset time period; The time slot where the first transmission opportunity of repeated PDCCH transmission occurs within a preset time period; The association relationship between transmission resources at different transmission timings for repeated PDCCH transmission; Wherein, when the configuration information includes the first time slot for repeated PDCCH transmission within a preset time period, or includes the time slot where the first transmission opportunity for repeated PDCCH transmission within a preset time period is located, determining the time slots of at least two transmission opportunities for repeated PDCCH transmission according to the configuration information includes: Determine an available time slot within a preset time period after the first time slot or the time slot where the first transmission opportunity is located; It is determined that every K consecutive available time slots in the available time slots are used to transmit K repeated transmissions of a PDCCH respectively; wherein K is a maximum number of repeated transmissions of the PDCCH.

31. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the PDCCH transmission method according to any one of claims 1 to 15, or the PDCCH transmission method according to any one of claims 16 to 26.

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