Communication method and device, communication equipment, communication system and storage medium

Abstract

The invention provides a communication method and device, equipment and a storage medium. The method comprises the steps that a terminal determines the number of times of additional reception of a downlink channel; the additional reception of the downlink channel is the reception of the downlink channel except the first reception of the downlink channel; the terminal determines a first receiving position, wherein the first receiving position is a corresponding receiving position when the downlink channel is additionally received; and the terminal additionally receives the downlink channel. According to the method disclosed by the invention, the transmission times of the same downlink channel can be increased, so that the coverage of the downlink channel can be enhanced, the transmission performance of the downlink channel is improved, and the transmission success rate of the downlink channel is improved.

Description

Communication method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods and devices, communication equipment, communication systems, and storage media. Background Art

[0002] In communication systems, network equipment often needs to transmit downlink channels to terminals, such as the physical downlink control channel (PDCCH) used to schedule system information block 1 (SIB1). Enhancing coverage for downlink channel transmission is a pressing technical issue.

[0003] Summary of the Invention

[0004] The present disclosure provides a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, including:

[0006] The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0007] The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0008] The terminal additionally receives the downlink channel.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, including:

[0010] The network device determines the number of additional transmissions of the downlink channel; the additional transmissions of the downlink channel are: transmissions performed on the downlink channel in addition to the first transmission of the downlink channel;

[0011] The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0012] The network device additionally transmits the downlink channel.

[0013] According to a third aspect of an embodiment of the present disclosure, a communication method is provided for use in a communication system, the communication system including a terminal and a network device, the method including at least one of the following:

[0014] The network device determines the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: transmission of the downlink channel in addition to the first transmission of the downlink channel;

[0015] The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0016] The network device additionally transmits the downlink channel;

[0017] The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0018] The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0019] The terminal additionally receives the downlink channel.

[0020] According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0021] a processing module, configured to determine a number of additional receptions of a downlink channel; the additional reception of the downlink channel being: reception of the downlink channel in addition to the first reception of the downlink channel;

[0022] The processing module is further configured to determine a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0023] The receiving module is configured to additionally receive the downlink channel.

[0024] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0025] a processing module, configured to determine a number of additional transmissions of a downlink channel; wherein the additional transmission of the downlink channel is: transmissions performed on the downlink channel in addition to the first transmission of the downlink channel;

[0026] The processing module is further configured to determine a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0027] The sending module is used for additionally transmitting the downlink channel.

[0028] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0029] one or more processors;

[0030] The processor is used to call instructions to enable the communication device to execute the communication method described in the first aspect or the second aspect.

[0031] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal and a network device, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the second aspect.

[0032] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0034] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0035] FIG2A is an interactive diagram of a communication method provided by an embodiment of the present disclosure;

[0036] FIG2B is a schematic diagram showing a transmission position of a downlink channel of a different SSB during the first transmission according to an embodiment of the present disclosure;

[0037] FIG2C is a schematic diagram showing the transmission position of another different SSB downlink channel during the first transmission according to an embodiment of the present disclosure;

[0038] FIG2D is a schematic diagram of a PMO determination table according to an embodiment of the present disclosure;

[0039] FIG2E is a schematic diagram illustrating different first PDCCH candidate sets and second PDCCH candidate sets in the same PMO according to an embodiment of the present disclosure;

[0040] 3A-3B are flowcharts of a communication method provided in yet another embodiment of the present disclosure;

[0041] 4A-4B are flowcharts of a communication method provided in yet another embodiment of the present disclosure;

[0042] FIG5A is a flow chart of a communication method provided in yet another embodiment of the present disclosure;

[0043] FIG6A is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0044] FIG6B is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0045] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0046] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] The embodiments of the present disclosure provide a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0048] In a first aspect, an embodiment of the present disclosure provides a communication method, performed by a terminal, the method including at least one of the following:

[0049] The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0050] The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0051] The terminal additionally receives the downlink channel.

[0052] In the above embodiment, after the network device performs the first transmission on the downlink channel, it will perform additional transmission on the same downlink channel. At the same time, after the terminal receives the downlink channel for the first time, it will also perform additional reception on the same downlink channel. This can increase the number of transmissions on the same downlink channel, thereby enhancing the coverage of the downlink channel, improving the transmission performance of the downlink channel, and increasing the transmission success rate of the downlink channel.

[0053] With reference to some embodiments of the first aspect, in some embodiments, the additionally receiving the downlink channel includes:

[0054] The downlink channel is additionally received based on the number of additional receptions and / or the first receiving position.

[0055] In the above embodiment, when the terminal additionally receives the downlink channel, it performs the additional reception based on the number of additional receptions and / or the first receiving position, thereby ensuring the accuracy of the additional reception of the downlink channel.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the information carried by the additionally received downlink channel is the same as the information carried by the downlink channel received for the first time, for example, the bits carried by the additionally received downlink channel are the same as the bits carried by the downlink channel received for the first time.

[0057] In the above embodiment, the information carried by the additionally received downlink channel is the same as the information carried by the downlink channel received for the first time. It can be seen that the present disclosure is for additional transmission of the same information carried by the same downlink channel, which can enhance the coverage of the downlink channel, improve the transmission performance of the downlink channel, and increase the transmission success rate of the downlink channel.

[0058] In combination with some embodiments of the first aspect, in some embodiments, the first reception of the downlink channel is combined with the additional reception.

[0059] In the above embodiment, the first reception of the downlink channel is combined with the additional reception to ensure that the terminal can uniformly parse and decode multiple receptions of the same downlink channel (such as the first reception and the additional reception) to improve the reception performance and ensure the integrity of the communication information.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, determining the number of additional receptions of the downlink channel includes at least one of the following:

[0061] Determining the number of additional receptions based on the agreement;

[0062] receiving the number of additional receptions indicated by the network device;

[0063] The number of additional receptions is determined based on channel conditions.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, the number of additional receptions indicated by the receiving network device includes:

[0065] The number of additional receptions indicated by the network device through a master information block MIB and / or a physical broadcast channel PBCH is received.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, the channel condition includes signal quality, and determining the number of additional receptions based on the channel condition includes:

[0067] The number of additional receptions is determined based on the signal quality and a signal quality threshold, wherein different signal quality thresholds correspond to different numbers of additional receptions.

[0068] In the above embodiment, a method is provided for the terminal to determine the number of additional receptions, so that the terminal can subsequently perform additional receptions on the same downlink channel based on the number of additional receptions, thereby enhancing the coverage of the downlink channel, improving the reception performance of the downlink channel, and improving the reception success rate of the downlink channel.

[0069] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0070] The redundancy version RV sequence corresponding to the additional transmission of the downlink channel is determined based on protocol agreement and / or network device instruction.

[0071] In the above embodiment, the terminal also determines the RV sequence corresponding to the additional transmission of the downlink channel, so that the terminal can perform additional reception of the downlink channel based on the RV sequence, thereby increasing the redundant information during the combined decoding of the additional reception of the downlink channel, improving the decoding accuracy, and ensuring communication performance.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first receiving location includes:

[0073] The CORESET corresponding to the first receiving position is determined based on a first offset value and a first control resource set CORESET, wherein the first offset value is agreed by a protocol and / or indicated by a network, the first CORESET is the CORESET corresponding to the second receiving position, and the second receiving position is the receiving position corresponding to the first reception of the downlink channel.

[0074] In combination with some embodiments of the first aspect, in some embodiments, the CORESET corresponding to the first receiving position is the frequency domain position of the initial downlink bandwidth part DL BWP during the initial access of the terminal.

[0075] In combination with some embodiments of the first aspect, in some embodiments, the CORESET corresponding to the first receiving position is the frequency domain position where CORESET#0 is located.

[0076] In combination with some embodiments of the first aspect, in some embodiments, the first time domain window where the first receiving position is located includes a first physical downlink control channel listening time PMO, the second time domain window where the second receiving position is located includes a second PMO, the first PMO includes at least one first physical downlink control channel PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate;

[0077] The first PMO is used for monitoring the additional reception of the downlink channel, and the second PMO is used for monitoring the first reception of the downlink channel; the additionally received downlink channel is carried by the at least one first PDCCH candidate, and the firstly received downlink channel is carried by the at least one second PDCCH candidate.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first receiving location includes:

[0079] determining the first receiving position based on the second receiving position;

[0080] The first receiving position is a position after the second receiving position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0081] A first time domain window where the first receiving position is located and a second time domain window where the second receiving position is located have the same window length, and the first time domain window and the second time domain window have different time domain positions; or

[0082] The first time domain window where the first receiving position is located is the same as the window length of the second time domain window where the second receiving position is located, the second time domain window and the second time domain window have different time domain positions, the first time domain window and the second time domain window are located in the same period (such as two frames, 20ms), and the relative position of the first PMO in the first time domain window is the same as or different from the relative position of the second PMO in the second time domain window; or

[0083] There is a correspondence between the first receiving position and a first index, and the first receiving position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second receiving position, and the first index is indicated by the network device to the terminal; or

[0084] The first receiving position is located in a second time domain window where the second receiving position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0085] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first receiving location includes:

[0086] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the time domain position and frequency domain position of the second PMO in the second receiving position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0087] In combination with some embodiments of the first aspect, in some embodiments, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the AL of the downlink channel is less than 16, and determining the first receiving position includes:

[0089] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the second PMO in the second receiving position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0090] In the above embodiment, a method is provided for the terminal to determine the first receiving position so that the terminal can perform additional reception on the same downlink channel based on the first receiving position, thereby enhancing the coverage of the downlink channel, improving the receiving performance of the downlink channel, and increasing the reception success rate of the downlink channel.

[0091] In conjunction with some embodiments of the first aspect, in some embodiments, a link relationship exists between the first actual receiving position and the second actual receiving position; the link relationship includes at least one of the following:

[0092] The AL of the downlink channel carried by the first receiving position is the same as the AL of the downlink channel carried by the second receiving position;

[0093] The first PDCCH candidate channel for carrying a downlink channel in the first PDCCH candidate set and the second PDCCH candidate channel for carrying a downlink channel in the second PDCCH candidate set have the same number or are linked;

[0094] The AL of the downlink channel carried by the first receiving position and the AL of the downlink channel carried by the second receiving position are both maximum AL;

[0095] There is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0096] In conjunction with some embodiments of the first aspect, in some embodiments, the additionally receiving the downlink channel based on the first receiving position includes:

[0097] Determine a link relationship between the first receiving location and the second receiving location based on a protocol agreement and / or a network device indication;

[0098] The downlink channel is additionally received at the first receiving position based on the second receiving position and a link relationship between the first receiving position and the second receiving position.

[0099] In conjunction with some embodiments of the first aspect, in some embodiments, the first received downlink channel and the additionally received downlink channel are associated with the same synchronization signal block SSB index; wherein, in some embodiments, the link relationship between the first receiving position and the second receiving position of the downlink channel associated with different synchronization signal block SSB indexes is different or the same;

[0100] In combination with some embodiments of the first aspect, in some embodiments, the link modes between the first receiving position and the second receiving position corresponding to downlink channels of different periods are different or the same.

[0101] In the above embodiment, a link relationship is set between the first receiving position and the second receiving position, wherein the link relationship between the first receiving position and the second receiving position mentioned above is essentially: the link relationship between the AL of the downlink channel carried by the first receiving position and the AL of the downlink channel carried by the second receiving position, and the link relationship between the resources used to carry the downlink channel in the first receiving position (i.e., at least one first PDCCH candidate for carrying the downlink channel) and the resources used to carry the downlink channel in the second receiving position (i.e., at least one second PDCCH candidate for carrying the downlink channel). By setting the above link relationship between the first receiving position and the second receiving position, the efficiency and accuracy of the additional reception can be improved, and the blind detection complexity of the terminal can be reduced.

[0102] Specifically, the terminal usually performs the first reception of the downlink channel in the PDCCH candidate channel at the second receiving position, and performs additional reception of the downlink channel in the PDCCH candidate channel at the first receiving position, and merges and decodes the two. Since there are multiple PDCCH candidate channels at the first receiving position and the second receiving position, there are multiple merging combinations. If all of them are traversed, the complexity of the terminal's blind merging decoding will increase. In order to minimize the processing complexity of the terminal, the same PDCCH candidate channel numbers under the same AL are linked. In this way, the terminal only needs to merge and decode the PDCCH candidate channels with a linked relationship, which can greatly reduce the number of times the terminal attempts to merge and decode, and reduce the processing complexity of the terminal.

[0103] Optionally, in another implementation, in the above embodiment, by making the AL of the downlink channel carried at the first receiving position and the AL of the downlink channel carried at the second receiving position both the maximum AL, the first PDCCH candidate set of the first PMO can include only one first PDCCH, and the second PDCCH candidate set of the second PMO can include only one second PDCCH. At this time, the terminal no longer needs to perform blind detection, but can directly perform the first reception of the downlink channel on the second PDCCH, and perform additional reception of the downlink channel on the first PDCCH, thereby greatly improving the reception efficiency and accuracy of the downlink channel.

[0104] In combination with some embodiments of the first aspect, in some embodiments, the terminal may process the downlink channel more than once in one time domain unit.

[0105] In the above embodiment, by enabling the terminal to process the downlink channel more than once in one time domain unit, thereby ensuring that the terminal has the ability to receive the same downlink channel multiple times, additional reception of the downlink channel can be successfully performed, the coverage of the downlink channel can be enhanced, the reception performance of the downlink channel can be improved, and the reception success rate of the downlink channel can be improved.

[0106] In combination with some embodiments of the first aspect, in some embodiments, the downlink channel is used to carry downlink control information DCI for scheduling system message SIB1, and the downlink channel is a physical downlink control channel PDCCH.

[0107] In a second aspect, an embodiment of the present disclosure provides a communication method, performed by a network device, comprising at least one of the following:

[0108] The network device determines the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: transmission of the downlink channel in addition to the first transmission of the downlink channel;

[0109] The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0110] The network device additionally transmits the downlink channel.

[0111] In the above embodiment, after the network device performs the first transmission on the downlink channel, it will perform additional transmission on the same downlink channel. At the same time, after the terminal receives the downlink channel for the first time, it will also perform additional reception on the same downlink channel. This can increase the number of transmissions on the same downlink channel, thereby enhancing the coverage of the downlink channel, improving the transmission performance of the downlink channel, and increasing the transmission success rate of the downlink channel.

[0112] With reference to some embodiments of the second aspect, in some embodiments, the additionally transmitting the downlink channel includes:

[0113] The downlink channel is additionally transmitted based on the number of additional transmissions and / or the first transmission position.

[0114] In combination with some embodiments of the second aspect, in some embodiments, the information carried by the additionally transmitted downlink channel is the same as the information carried by the firstly transmitted downlink channel.

[0115] In conjunction with some embodiments of the second aspect, in some embodiments, determining the number of additional transmissions of the downlink channel includes at least one of the following:

[0116] Determining the number of additional transmissions based on the protocol;

[0117] The network device autonomously determines the number of additional transmissions.

[0118] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0119] The network device indicates the number of additional transmissions to the terminal through the MIB and / or PBCH.

[0120] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0121] The network device indicates to the terminal a redundant version RV sequence corresponding to additional transmission of the downlink channel.

[0122] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first transmission position includes:

[0123] The CORESET corresponding to the first transmission position is determined based on the first offset value and the first CORESET, wherein the first offset value is determined by the protocol agreement and / or the network autonomously, the first CORESET is the CORESET corresponding to the second transmission position, and the second transmission position is the transmission position corresponding to the first transmission of the downlink channel.

[0124] In combination with some embodiments of the second aspect, in some embodiments, the CORESET corresponding to the first transmission position is the frequency domain position of the initial DL BWP during the initial access of the terminal.

[0125] In combination with some embodiments of the second aspect, in some embodiments, the first time domain window where the first transmission position is located includes a first PMO, the second time domain window where the second transmission position is located includes a second PMO, the first PMO includes at least one first PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate;

[0126] The additionally transmitted downlink channel is carried by the at least one first PDCCH candidate, and the firstly transmitted downlink channel is carried by the at least one second PDCCH candidate.

[0127] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first transmission position includes:

[0128] determining the first transmission position based on the second transmission position;

[0129] The first transmission position is a position after the second transmission position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0130] A first time domain window where the first transmission position is located and a second time domain window where the second transmission position is located have the same window length, and the first time domain window and the second time domain window have different time domain positions; or

[0131] There is a correspondence between the first transmission position and a first index, the first transmission position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second transmission position, and the first index is indicated by the network device to the terminal; or

[0132] The first transmission position is located in a second time domain window where the second transmission position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0133] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first transmission position includes:

[0134] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the time domain position and frequency domain position of the second PMO in the second transmission position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0135] In combination with some embodiments of the second aspect, in some embodiments, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0136] In conjunction with some embodiments of the second aspect, in some embodiments, the AL of the downlink channel is less than 16, and determining the first transmission position includes:

[0137] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the second PMO in the second transmission position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0138] In conjunction with some embodiments of the second aspect, in some embodiments, a link relationship exists between the first transmission location and the second transmission location; the link relationship includes at least one of the following:

[0139] The AL of the downlink channel carried by the first transmission position is the same as the AL of the downlink channel carried by the second transmission position;

[0140] When the time domain position and / or frequency domain position of the first PMO in the first transmission position and the second PMO in the second transmission position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists;

[0141] The AL of the downlink channel carried by the first transmission position and the AL of the downlink channel carried by the second transmission position are both maximum AL;

[0142] When the first time domain window where the first transmission position is located is different from the first time domain window where the second transmission position is located, a link relationship exists between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0143] With reference to some embodiments of the second aspect, in some embodiments, the additional transmission of the downlink channel based on the first transmission position includes:

[0144] Determining a link relationship between the first transmission location and the second transmission location based on a protocol agreement and / or autonomously by a network device;

[0145] The downlink channel is additionally transmitted at the first transmission position based on the second transmission position and a link relationship between the first transmission position and the second transmission position.

[0146] In combination with some embodiments of the second aspect, in some embodiments, the downlink channel of the first transmission and the downlink channel of the additional transmission are associated with the same SSB index; the link relationship between the first transmission position and the second transmission position of the downlink channel associated with different synchronization signal block SSB indices is different or the same.

[0147] In combination with some embodiments of the second aspect, in some embodiments, the link modes between the first transmission position and the second transmission position corresponding to downlink channels of different periods are different or the same.

[0148] In combination with some embodiments of the second aspect, in some embodiments, the terminal may process the downlink channel more than once in one time domain unit.

[0149] In combination with some embodiments of the second aspect, in some embodiments, the downlink channel is used to carry DCI for scheduling SIB1, and the downlink channel is PDCCH.

[0150] In a third aspect, an embodiment of the present disclosure provides a communication method for a communication system, wherein the communication system includes a terminal and a network device. The method includes at least one of the following:

[0151] The network device determines the number of additional transmissions of the downlink channel; the additional transmissions of the downlink channel are: transmissions performed on the downlink channel in addition to the first transmission of the downlink channel;

[0152] The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0153] The network device additionally transmits the downlink channel;

[0154] The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0155] The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0156] The terminal additionally receives the downlink channel.

[0157] In a fourth aspect, an embodiment of the present disclosure provides a terminal, comprising at least one of the following:

[0158] a processing module, configured to determine a number of additional receptions of a downlink channel; the additional reception of the downlink channel being: reception of the downlink channel in addition to the first reception of the downlink channel;

[0159] The processing module is further configured to determine a first receiving position, where the first receiving position is a receiving position corresponding to additionally receiving the downlink channel;

[0160] The receiving module is configured to additionally receive the downlink channel.

[0161] In combination with some embodiments of the fourth aspect, in some embodiments, the information carried by the additionally received downlink channel is the same as the information carried by the firstly received downlink channel.

[0162] In conjunction with some embodiments of the fourth aspect, in some embodiments, the receiving module is further configured to:

[0163] The downlink channel is additionally received based on the number of additional receptions and / or the first receiving position.

[0164] In combination with some embodiments of the fourth aspect, in some embodiments, the first reception of the downlink channel is combined with the additional reception.

[0165] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0166] Determining the number of additional receptions based on the agreement;

[0167] receiving the number of additional receptions indicated by the network device;

[0168] The number of additional receptions is determined based on channel conditions.

[0169] In conjunction with some embodiments of the fourth aspect, in some embodiments, the number of additional receptions indicated by the receiving network device includes:

[0170] The number of additional receptions indicated by the network device through a master information block MIB and / or a physical broadcast channel PBCH is received.

[0171] In conjunction with some embodiments of the fourth aspect, in some embodiments, the channel condition includes signal quality, and the processing module is further configured to:

[0172] The number of additional receptions is determined based on the signal quality and a signal quality threshold, wherein different signal quality thresholds correspond to different numbers of additional receptions.

[0173] In conjunction with some embodiments of the fourth aspect, in some embodiments, the terminal is further configured to:

[0174] The redundancy version RV sequence corresponding to the additional transmission of the downlink channel is determined based on protocol agreement and / or network device instruction.

[0175] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0176] The CORESET corresponding to the first receiving position is determined based on a first offset value and a first control resource set CORESET, wherein the first offset value is agreed by a protocol and / or indicated by a network, the first CORESET is the CORESET corresponding to the second receiving position, and the second receiving position is the receiving position corresponding to the first reception of the downlink channel.

[0177] In combination with some embodiments of the fourth aspect, in some embodiments, the CORESET corresponding to the first receiving position is the frequency domain position of the initial downlink bandwidth part DL BWP during the initial access of the terminal.

[0178] In combination with some embodiments of the fourth aspect, in some embodiments, the first time domain window where the first receiving position is located includes a first physical downlink control channel listening time PMO, the second time domain window where the second receiving position is located includes a second PMO, the first PMO includes at least one first physical downlink control channel PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate;

[0179] The first PMO is used for monitoring the additional reception of the downlink channel, and the second PMO is used for monitoring the first reception of the downlink channel; the additionally received downlink channel is carried by the at least one first PDCCH candidate, and the firstly received downlink channel is carried by the at least one second PDCCH candidate.

[0180] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0181] determining the first receiving position based on the second receiving position;

[0182] The first receiving position is a position after the second receiving position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0183] A first time domain window in which the first receiving position is located and a second time domain window in which the second receiving position is located have the same window length, the first time domain window and the second time domain window have different time domain positions, and a relative position of the first PMO in the first time domain window is the same as or different from a relative position of the second PMO in the second time domain window; or

[0184] There is a correspondence between the first receiving position and a first index, and the first receiving position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second receiving position, and the first index is indicated by the network device to the terminal; or

[0185] The first receiving position is located in a second time domain window where the second receiving position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0186] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0187] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the time domain position and frequency domain position of the second PMO in the second receiving position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0188] In combination with some embodiments of the fourth aspect, in some embodiments, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0189] In conjunction with some embodiments of the fourth aspect, in some embodiments, the AL of the downlink channel is less than 16, and determining the first receiving position includes:

[0190] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the second PMO in the second receiving position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0191] In conjunction with some embodiments of the fourth aspect, in some embodiments, a link relationship exists between the first receiving location and the second receiving location; the link relationship includes at least one of the following:

[0192] The AL of the downlink channel carried by the first receiving position is the same as the AL of the downlink channel carried by the second receiving position;

[0193] When the time domain position and / or frequency domain position of the first PMO in the first receiving position and the second PMO in the second receiving position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists;

[0194] The AL of the downlink channel carried by the first receiving position and the AL of the downlink channel carried by the second receiving position are both maximum AL;

[0195] When the first time domain window where the first receiving position is located is different from the first time domain window where the second receiving position is located, there is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0196] In conjunction with some embodiments of the fourth aspect, in some embodiments, the additionally receiving the downlink channel based on the first receiving position includes:

[0197] Determine a link relationship between the first receiving location and the second receiving location based on a protocol agreement and / or a network device indication;

[0198] The downlink channel is additionally received at the first receiving position based on the second receiving position and a link relationship between the first receiving position and the second receiving position.

[0199] In combination with some embodiments of the fourth aspect, in some embodiments, the downlink channel received for the first time and the downlink channel received additionally are associated with the same synchronization signal block SSB index; wherein, the link relationship between the first receiving position and the second receiving position of the downlink channel associated with different synchronization signal block SSB indexes is different or the same.

[0200] In combination with some embodiments of the fourth aspect, in some embodiments, the link modes between the first receiving position and the second receiving position corresponding to downlink channels of different periods are different or the same.

[0201] In combination with some embodiments of the fourth aspect, in some embodiments, the terminal may process the downlink channel more than once in one time domain unit.

[0202] In combination with some embodiments of the fourth aspect, in some embodiments, the downlink channel is used to carry downlink control information DCI of the scheduling system message SIB1, and the downlink channel is a physical downlink control channel PDCCH.

[0203] In a fifth aspect, an embodiment of the present disclosure provides a network device, comprising at least one of the following:

[0204] a processing module, configured to determine a number of additional transmissions of a downlink channel; wherein the additional transmission of the downlink channel is: transmissions performed on the downlink channel in addition to the first transmission of the downlink channel;

[0205] The processing module is further configured to determine a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0206] The sending module is used for additionally transmitting the downlink channel.

[0207] In conjunction with some embodiments of the fifth aspect, in some embodiments, the sending module is further configured to:

[0208] The downlink channel is additionally transmitted based on the number of additional transmissions and / or the first transmission position.

[0209] In combination with some embodiments of the fifth aspect, in some embodiments, the information carried by the additionally transmitted downlink channel is the same as the information carried by the firstly transmitted downlink channel.

[0210] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further used for at least one of the following:

[0211] Determining the number of additional transmissions based on the protocol;

[0212] The network device autonomously determines the number of additional transmissions.

[0213] In conjunction with some embodiments of the fifth aspect, in some embodiments, the method further includes:

[0214] The network device indicates the number of additional transmissions to the terminal through the MIB and / or PBCH.

[0215] In conjunction with some embodiments of the fifth aspect, in some embodiments, the method further includes:

[0216] The network device indicates to the terminal a redundant version RV sequence corresponding to additional transmission of the downlink channel.

[0217] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further configured to:

[0218] The CORESET corresponding to the first transmission position is determined based on the first offset value and the first CORESET, wherein the first offset value is determined by the protocol agreement and / or the network autonomously, the first CORESET is the CORESET corresponding to the second transmission position, and the second transmission position is the transmission position corresponding to the first transmission of the downlink channel.

[0219] In combination with some embodiments of the fifth aspect, in some embodiments, the CORESET corresponding to the first transmission position is the frequency domain position of the initial DL BWP during the initial access of the terminal.

[0220] In conjunction with some embodiments of the fifth aspect, in some embodiments, the first time domain window where the first transmission position is located includes a first PMO, the second time domain window where the second transmission position is located includes a second PMO, the first PMO includes at least one first PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate;

[0221] The additionally transmitted downlink channel is carried by the at least one first PDCCH candidate, and the firstly transmitted downlink channel is carried by the at least one second PDCCH candidate.

[0222] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further configured to:

[0223] determining the first transmission position based on the second transmission position;

[0224] The first transmission position is a position after the second transmission position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0225] A first time domain window where the first transmission position is located and a second time domain window where the second transmission position is located have the same window length, and the first time domain window and the second time domain window have different time domain positions; or

[0226] There is a correspondence between the first transmission position and a first index, the first transmission position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second transmission position, and the first index is indicated by the network device to the terminal; or

[0227] The first transmission position is located in a second time domain window where the second transmission position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0228] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further configured to:

[0229] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the time domain position and frequency domain position of the second PMO in the second transmission position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0230] In combination with some embodiments of the fifth aspect, in some embodiments, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0231] With reference to some embodiments of the fifth aspect, in some embodiments, the AL of the downlink channel is less than 16, and determining the first transmission position includes:

[0232] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the second PMO in the second transmission position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0233] In conjunction with some embodiments of the fifth aspect, in some embodiments, a link relationship exists between the first transmission location and the second transmission location; the link relationship includes at least one of the following:

[0234] The AL of the downlink channel carried by the first transmission position is the same as the AL of the downlink channel carried by the second transmission position;

[0235] When the time domain position and / or frequency domain position of the first PMO in the first transmission position and the second PMO in the second transmission position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists;

[0236] The AL of the downlink channel carried by the first transmission position and the AL of the downlink channel carried by the second transmission position are both maximum AL;

[0237] When the first time domain window where the first transmission position is located is different from the first time domain window where the second transmission position is located, a link relationship exists between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0238] With reference to some embodiments of the fifth aspect, in some embodiments, the additional transmission of the downlink channel based on the first transmission position includes:

[0239] Determining a link relationship between the first transmission location and the second transmission location based on a protocol agreement and / or autonomously by a network device;

[0240] The downlink channel is additionally transmitted at the first transmission position based on the second transmission position and a link relationship between the first transmission position and the second transmission position.

[0241] In combination with some embodiments of the fifth aspect, in some embodiments, the downlink channel transmitted for the first time and the downlink channel transmitted additionally are associated with the same SSB index; wherein, the link relationship between the first transmission position and the second transmission position of the downlink channel associated with different synchronization signal block SSB indices is different or the same.

[0242] In combination with some embodiments of the fifth aspect, in some embodiments, the link modes between the first transmission position and the second transmission position corresponding to downlink channels of different periods are different or the same.

[0243] In combination with some embodiments of the fifth aspect, in some embodiments, the terminal may process the downlink channel more than once in one time domain unit.

[0244] In combination with some embodiments of the fifth aspect, in some embodiments, the downlink channel is used to carry DCI for scheduling SIB1, and the downlink channel is PDCCH.

[0245] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0246] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0247] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0248] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0249] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0250] It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0251] The present disclosure provides invention titles. In some embodiments, the terms "communication method" and "information processing method," "information sending method," and "information receiving method" are interchangeable; the terms "communication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0252] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0253] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0254] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0255] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0256] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0257] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0258] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0259] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0260] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0261] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0262] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0263] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0264] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0265] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0266] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0267] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0268] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0269] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0270] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0271] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0272] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0273] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0274] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0275] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a terminal and a network device. Optionally, the network device may include at least one of an access network device and a core network device.

[0276] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0277] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0278] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0279] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0280] In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or a group of devices, each including all or part of one or more network elements. The network element may be virtual or physical. The core network, for example, includes at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC). Alternatively, the core network device may also be a location management function network element. Exemplarily, the location management function network element includes a location server (location server), which may be implemented as any one of the following: Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), Secure User Plane Location (SUPL), and Secure User Plane Location Platform (SUPLLP).

[0281] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0282] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0283] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0284] FIG2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0285] Step 2101: The network device determines the number of additional transmissions of the downlink channel.

[0286] Optionally, in some embodiments, the downlink channel may be a PDCCH, and the downlink channel may be used to schedule SIB1, that is, the downlink channel may carry information indicating the transmission location of SIB1, so that the terminal may receive SIB1 based on the information, thereby implementing scheduling of SIB1. For example, the downlink channel may carry downlink control information (DCI) for scheduling SIB1, or, in some embodiments, the downlink channel may also carry paging DCI, at least one of Msg1DCI, Msg2DCI, Msg3DCI, and Msg4DCI. Optionally, the additional transmission of the same downlink channel should be the same as the information carried in the first transmission, for example, the bits carried by the additionally transmitted downlink channel are the same as the bits carried by the first transmitted downlink channel.

[0287] Optionally, the above-mentioned “number of additional transmissions” may be understood as, for example, additional transmissions performed on the same downlink channel in addition to the first transmission of the downlink channel. The number of additional transmissions may be an integer greater than 0.

[0288] Optionally, the number of additional transmissions may be determined by the network device based on a protocol agreement, or the number of additional transmissions may be determined autonomously by the network device.

[0289] Optionally, in some embodiments, the first transmission and additional transmissions of the same downlink channel may be associated with the same synchronization signal block index (SSB index). Furthermore, the first transmission and additional transmissions are performed for each downlink channel associated with the SSB index.

[0290] Optionally, in some embodiments, the first transmission of the downlink channel may be referred to as, for example, legacy SIB1 PDCCH transmission, and the additional transmission of the downlink channel may be referred to as, for example, additional SIB1 PDCCH transmission, but is not limited thereto.

[0291] It should be noted that, as mentioned above, the downlink channel is mainly used to schedule SIB1, and the additional transmission of the same downlink channel should carry the same information as the first transmission. Under this premise, the following two situations are possible.

[0292] Case 1: SIB1 is scheduled in the downlink channel by carrying the time domain position of SIB1. At this time, the additional transmission of the same downlink channel should have the same time domain position as the SIB1 carried in the first transmission.

[0293] Case 2: SIB1 is scheduled in the downlink channel by carrying a position offset value K. Optionally, the position offset value K is used to indicate the offset value between the time domain position of any transmission of the downlink channel and the time domain position of SIB1. At this time, the additional transmission of the same downlink channel should be the same as the position offset value K of SIB1 carried during the first transmission. In addition, the above-mentioned "any transmission of the downlink channel" may be agreed upon by the protocol, or may be indicated by the network device to the terminal, and it is necessary to ensure that the terminal and the network device have aligned understandings of the "any transmission of the downlink channel". For example, for the terminal and the network device, any transmission is the first transmission of the downlink channel, or any transmission may be the first additional transmission or the last additional transmission of the downlink channel, etc.

[0294] Step 2102: The network device indicates the number of additional transmissions to the terminal.

[0295] Optionally, the method in which the network device indicates the number of additional transmissions to the terminal may include any one of the following;

[0296] The first method is that the network device indicates the number of additional transmissions through the Master Information Block (MIB).

[0297] Optionally, the spare field in the MIB can be used to carry different bit values ​​to indicate the number of additional transmissions, where different bit values ​​correspond to different numbers of additional transmissions. For example, when the spare field in the MIB carries a first value (such as 0), it means that the number of additional transmissions is 1, and when the spare field in the MIB carries a second value (such as 1), it means that the number of additional transmissions is 2.

[0298] The second method is that the network device indicates the number of additional transmissions via a physical broadcast channel (PBCH).

[0299] Optionally, when the carrier frequency is less than 6 GHz (gigahertz), the PBCH contains 2 bits of reserved information, and at least one bit of the reserved information can be used to indicate the number of additional transmissions. Different bit values ​​correspond to different numbers of additional transmissions. For example, when the reserved information in the PBCH carries a first value (e.g., 0), it indicates that the number of additional transmissions is 1, and when the reserved information in the PBCH carries a second value (e.g., 1), it indicates that the number of additional transmissions is 2.

[0300] The third method: The network device indicates the number of additional transmissions through MIB and PBCH.

[0301] Optionally, the MIB and PBCH may jointly indicate an N-bit bit value, where N is a positive integer greater than 1. The MIB may indicate the most significant bit of the N-bit bit value, and the PBCH may indicate the least significant bits of the N-bit bit value. Alternatively, the MIB may indicate the least significant bit of the N-bit bit value, and the PBCH may indicate the most significant bits of the N-bit bit value. For example, one spare bit in the MIB + two reserve bits reserved in the PBCH may be used to indicate the three-bit bit value. In one embodiment, each bit value may correspond to a different number of additional transmissions, and the number of additional transmissions indicated is indicated by indicating different bit values. For example, assuming that the number of additional transmissions corresponding to the bit value "100" is four, when the network device indicates "100" using one spare bit in the MIB + two reserve bits reserved in the PBCH, it means that the number of additional transmissions indicated by the network device is four. In this case, the network device should perform five transmissions on the downlink channel, i.e., four additional transmissions after the first downlink channel transmission.

[0302] Alternatively, in another embodiment, a set can be determined in advance, including multiple candidate values. These multiple candidate values ​​can be understood as alternative values ​​for the number of additional transmissions, where each candidate value corresponds to an index. The network device can indicate the index corresponding to a candidate value in the set via the MIB and PBCH to indicate the number of additional transmissions to the terminal. Optionally, the set can be predefined by the protocol, or can be determined autonomously by the network device and sent to the terminal.

[0303] Step 2103: The terminal determines the number of additional receptions of the downlink channel.

[0304] For an introduction to the downlink channel, please refer to the above steps.

[0305] Optionally, the number of additional receptions may be understood as, for example: additional reception of the downlink channel in addition to the first reception of the downlink channel; optionally, the number of additional receptions may be a positive integer greater than 0.

[0306] Optionally, the number of additional receptions may be the same as the number of additional transmissions mentioned above, or the number of additional receptions may be less than the number of additional transmissions mentioned above. For example, the number of additional transmissions may be M times, and the number of additional receptions may be N times, where N<M. In this case, the network device performs M additional transmissions on the downlink channel, and the terminal only receives N of the M additional transmissions. For example, it may receive any N of the M additional transmissions (such as the first N times).

[0307] Optionally, the number of additional receptions may be determined by the terminal based on a protocol agreement, or the number of additional receptions may be determined by the terminal based on an instruction from a network device, or the number of additional receptions may be determined by the terminal based on a channel condition.

[0308] The method for the network device to indicate the number of additional receptions is the same as the method for the network device to indicate the number of additional transmissions described above, and will not be repeated here.

[0309] Optionally, the channel condition may include signal quality. When the number of additional receptions is determined by the terminal based on the channel condition, the number of additional receptions may be determined based on the signal quality and a signal quality threshold, where different signal quality thresholds correspond to different numbers of additional receptions. Specifically, the determination method of the terminal may include the following steps:

[0310] Step 2103a: Determine the number of additional transmissions of the network device for the downlink channel.

[0311] Optionally, the number of additional transmissions may be indicated by the network device to the terminal, or may be determined by the terminal based on a protocol.

[0312] Step 2103b: Determine at least one different first value, where the first value is an integer greater than 0, and the first values ​​are all less than or equal to the number of additional transmissions, and each first value corresponds to a different signal quality threshold.

[0313] Optionally, the signal quality threshold may be, for example, a reference signal receiving power (RSRP) threshold, wherein the signal quality threshold corresponding to the first value may be positively correlated with the first value, that is, when the first value is larger, the signal quality threshold corresponding to the first value is larger.

[0314] For example, assume there are three different first values: 1, 2, and 3, where the signal quality threshold corresponding to 1 is threshold #1, the signal quality threshold corresponding to 2 is threshold #2, and the signal quality threshold corresponding to 3 is threshold #3, and threshold #1 < threshold #2 < threshold #3.

[0315] Optionally, the first value and its corresponding signal quality threshold may be agreed upon by a protocol, or may be indicated by a network device to the terminal.

[0316] Step 2103c: determine a target signal quality threshold from the signal quality thresholds corresponding to the first values ​​based on the current signal quality of the terminal, the current signal quality of the terminal is less than or equal to the target signal quality threshold, and the difference between the target signal quality threshold and the current signal quality of the terminal is minimal.

[0317] Optionally, the current signal quality of the terminal may be, for example, the current RSRP of the terminal.

[0318] The following is an example of the above step 2103c.

[0319] Assume that there are three different first values, namely: 1, 2, and 3, where the signal quality threshold corresponding to 1 is threshold #1, the signal quality threshold corresponding to 2 is threshold #2, and the signal quality threshold corresponding to 3 is threshold #3. Threshold #1 < threshold #2 < threshold #3. If the current signal quality of the terminal is greater than threshold #1 and less than threshold #2, then the target signal quality threshold is threshold #2. If the current signal quality of the terminal is greater than threshold #2 and less than threshold #3, then the target signal quality threshold is threshold #3. If the current signal quality of the terminal is less than threshold #1, then the target signal quality threshold is threshold #1.

[0320] Step 2103d: Determine a target first value corresponding to the target signal quality threshold.

[0321] Step 2103e: determine the target first value as the number of additional receptions.

[0322] For example, assume that there are three different first values, namely: 1, 2, and 3, where the signal quality threshold corresponding to 1 is threshold #1, the signal quality threshold corresponding to 2 is threshold #2, and the signal quality threshold corresponding to 3 is threshold #3. If the target signal quality threshold value #3 is determined, the number of additional receptions determined is: 3 times.

[0323] Step 2104: The network device determines a redundancy version (RV) sequence (RV sequence) corresponding to the first transmission and additional transmissions of the downlink channel.

[0324] Optionally, the network device may determine the RV sequence based on a protocol agreement, or the network device may determine the RV sequence autonomously.

[0325] Optionally, the RV can be used to indicate the starting position of the encoded bit sequence of the payload data of the downlink channel, the network device can encode the payload of the downlink channel based on the RV, and the terminal can decode the payload of the downlink channel based on the RV.

[0326] For example, assuming that the network device performs an additional transmission on the same downlink channel after the first transmission, the RV sequence should include two RVs. For example, RV sequence = {0, 3}, which means that the starting position of the coded bit sequence of the payload data of the downlink channel of the first transmission is RV#0, and the starting position of the coded bit sequence of the payload data of the downlink channel of the additional transmission is RV#3;

[0327] For another example, assuming that the network device performs two additional transmissions on the same downlink channel after the first transmission, the RV sequence should include three RVs, for example, RV sequence = {0,3,0}. In this case, it means that the starting position of the encoded bit sequence of the payload data of the downlink channel of the first transmission is RV#0, and the starting positions of the encoded bit sequences of the payload data of the downlink channel of the two additional transmissions are RV#3 and RV#0 respectively.

[0328] Step 2105: The network device indicates to the terminal the RV sequences corresponding to the first transmission and additional transmissions of the downlink channel.

[0329] Step 2106: The terminal determines RV sequences corresponding to the first reception and additional reception (reception) of the downlink channel.

[0330] Optionally, the terminal may determine the RV sequences corresponding to the first reception and additional reception of the downlink channel based on a protocol agreement and / or an instruction from a network device.

[0331] Optionally, when the terminal determines the RV sequence corresponding to the first reception and additional reception of the downlink channel based on the indication of the network device, the network device specifically indicates the RV sequence corresponding to the first transmission and additional transmission of the downlink channel. Based on this, if the number of additional receptions determined by the terminal in the aforementioned step 2103 is the same as the number of additional transmissions determined by the network device, the terminal can directly determine the RV sequence indicated by the network device as the RV sequence corresponding to the first reception and additional reception of the downlink channel; if the number of additional receptions determined by the terminal in the aforementioned step 2103 is less than the number of additional transmissions determined by the network device, the terminal needs to select the RV sequence corresponding to the first reception and additional reception of the downlink channel from the RV sequence indicated by the network device based on the N additional receptions selected by it in the downlink channel of the additional transmission of the network device. For example, assuming that the RV sequence indicated by the network device is {0, 3, 0}, it means that after the network device performs the first transmission on the downlink channel, it will perform two additional transmissions on the same downlink channel. At this time, if the number of additional receptions determined by the terminal in the aforementioned step 2103 is 1, which is less than the number of additional transmissions 2 determined by the network device, and the terminal determines that the downlink channel of the additional transmission is received before the downlink channel of the additional transmission by the network device, the terminal can determine that the RV sequences corresponding to the first reception and the additional reception are the first two RV sequences indicated by the network device, that is: {0, 3}.

[0332] Step 2107: The network device determines a first transmission position.

[0333] Optionally, the first transmission position may be the transmission position corresponding to the additional transmission of the downlink channel. Optionally, the first transmission position may be determined based on the second transmission position. The second transmission position may be the transmission position corresponding to the first transmission of the downlink channel. The second transmission position may be agreed upon by the protocol, or may be determined autonomously by the network device.

[0334] Optionally, in some embodiments, the first time domain window in which the first transmission position is located may include a first physical downlink control channel monitoring occasion (PMO), and the second time domain window in which the second transmission position is located may include a second PMO, the first PMO including at least one first PDCCH candidate set, the second PMO including at least one second PDCCH candidate set, the first PDCCH candidate set including at least one first PDCCH candidate, and the second PDCCH candidate set including at least one second PDCCH candidate; wherein the downlink channel of the additional transmission is carried by at least one first PDCCH candidate, and the downlink channel of the first transmission is carried by at least one second PDCCH candidate, wherein the first PDCCH candidate carrying the downlink channel of the additional transmission (or referred to as the first PDCCH candidate channel) can be understood as: the actual transmission position of the additional transmission of the downlink channel, and the second PDCCH candidate carrying the downlink channel of the first transmission (or referred to as the second PDCCH candidate channel) can be understood as: the actual transmission position of the first transmission of the downlink channel. Optionally, the above-mentioned time domain window can be called, for example, but not limited to: time period, duration window, monitoring window, etc.

[0335] Optionally, the above-mentioned first PMO is used by the terminal to monitor the downlink channel of the additional transmission, so as to monitor which first PDCCH candidates in the first PMO the downlink channel of the additional transmission is specifically carried by, so as to perform additional reception of the downlink channel based on the determined first PDCCH candidate. The above-mentioned second PMO is used by the terminal to monitor the downlink channel of the first transmission, so as to monitor which second PDCCH candidates in the second PMO the downlink channel of the first transmission is specifically carried by, so as to perform the first reception of the downlink channel based on the determined second PDCCH candidate.

[0336] Optionally, in some embodiments, a CORESET corresponding to the first transmission position may be determined based on a first offset value and a first control resource set CORESET, wherein the first offset value may be determined by a protocol agreement and / or autonomously by the network. The first control resource set CORESET may be a control resource set CORESET (or CORESET#0) corresponding to the second transmission position, and the CORESET corresponding to the first transmission position may be a frequency domain position where an initial downlink bandwidth part (DL BWP) is located during initial access of the terminal.

[0337] Optionally, in some embodiments, the first transmission position may be a position after the second transmission position is offset by a second offset value, where the second offset value is agreed upon by a protocol and / or indicated by a network.

[0338] Optionally, in some embodiments, the window length of the first time domain window where the first transmission position is located is the same as the window length of the second time domain window where the second transmission position is located, the time domain positions of the first time domain window and the second time domain window are different, and the relative position of the first PMO in the first time domain window is the same as or different from the relative position of the second PMO in the second time domain window.

[0339] The following is a detailed introduction to the above-mentioned "different time domain positions of the first time domain window and the second time domain window":

[0340] Alternatively, in current communication systems, only one transmission is performed on the downlink channel, and a transmission position is defined for each SSB downlink channel transmission. Based on this, the transmission position of each SSB downlink channel is first described based on the prior art (i.e., without considering additional downlink channel transmissions).

[0341] Optionally, FIG2B is a schematic diagram of the transmission position of the downlink channel of a different SSB during the first transmission according to an embodiment of the present disclosure. As shown in FIG2B , the transmission positions corresponding to the downlink channels of SSB#0 and SSB#1 include time slot#0 (i.e., slot#0 in the figure) and time slot#1. The terminal can monitor the downlink channel of SSB#0 in time slot#0 and time slot#1 to determine whether the first transmission of the downlink channel of SSB#0 is specifically transmitted in time slot#0 or time slot#1, and the terminal can monitor the downlink channel of SSB#1 in time slot#0 and time slot#1 to determine whether SSB#1 is transmitted in time slot#0 or time slot#1 for the first time. The first transmission of the downlink channel is specifically transmitted on time slot #0 or time slot #1; similarly, the transmission positions corresponding to the downlink channels of SSB#2 and SSB#3 include time slot #1 and time slot #2, then the terminal can monitor the downlink channel of SSB#2 on time slot #1 and time slot #2 to determine whether the first transmission of the downlink channel of SSB#2 is specifically transmitted on time slot #1 or time slot #2, and the terminal can monitor the downlink channel of SSB#3 on time slot #1 and time slot #2 to determine whether the first transmission of the downlink channel of SSB#3 is specifically transmitted on time slot #1 or time slot #2.

[0342] Optionally, Figure 2C is a schematic diagram of the transmission position of the downlink channel of another different SSB during the first transmission according to an embodiment of the present disclosure, wherein, when M in the PMO determination table is 1 or 2, as shown in Figure 2C, the transmission position corresponding to the downlink channel of SSB#0 includes time slot #10 and time slot #11, then the terminal can monitor the downlink channel of SSB#0 on time slot #10 and time slot #11 to determine whether the first transmission of the downlink channel of SSB#0 is specifically transmitted on time slot #0 or time slot #1; similarly, the transmission position corresponding to the downlink channel of SSB#1 includes time slot #12 and time slot #13, then the terminal can monitor the downlink channel of SSB#2 on time slot #12 and time slot #13 to determine whether the first transmission of the downlink channel of SSB#2 is specifically transmitted on time slot #12 or time slot #13.

[0343] Optionally, the above-mentioned PMO determination table can be used to determine the PMO of the transmission position of the downlink channel. Figure 2D is a schematic diagram of a PMO determination table according to an embodiment of the present disclosure, wherein the "synchronization signal (SS) / physical broadcast channel (PBCH) block and CORESET multiplexing pattern" in Figure 2D can be the above-mentioned "M", wherein the value of M can determine the time domain density of the PMO.

[0344] Based on this, when additional transmission is introduced for the downlink channels associated with each SSB in the embodiment of the present disclosure, in an optional manner, for the situation shown in Figure 2B, the above-mentioned second transmission position (i.e., the transmission position when the downlink channel is transmitted for the first time) can be, for example, time slot #0 to time slot #4 in Figure 2B, and the second time domain window where the above-mentioned second transmission position is located can be time slot #0, time slot #1, time slot #2, time slot #3 or time slot #4 in Figure 2B. For example, the second time domain window where the second transmission position of the downlink channel associated with SSB#0 is located can be time slot #0 or time slot #1, and the second time domain window where the second transmission position of the downlink channel associated with SSB#2 is located can be time slot #1 or time slot #2. In addition, according to the pattern in FIG2B , five time slots may be added after time slot #4 in FIG2B , for example, time slot #5, time slot #6, time slot #7, time slot #8, and time slot #9. The distribution of time slot #5 is the same as that of time slot #0 in FIG2B , the distribution of time slot #6 is the same as that of time slot #1 in FIG2B , the distribution of time slot #7 is the same as that of time slot #2 in FIG2B , the distribution of time slot #8 is the same as that of time slot #3 in FIG2B , and the distribution of time slot #9 is the same as that of time slot #4 in FIG2B . In this case, the first transmission The position can be, for example, time slot #5 to time slot #9, and time slot #5, time slot #6, time slot #7, time slot #8 or time slot #9 can be determined as the first time domain window where the above-mentioned first transmission position (i.e., the transmission position when the downlink channel is additionally transmitted) is located. For example, the first time domain window where the first transmission position of the downlink channel associated with SSB#0 is located can be time slot #5 and time slot #6, and the first time domain window where the first transmission position of the downlink channel associated with SSB#2 is located can be time slot #6 and time slot #7.

[0345] Another optional method is to use a second time domain window for the situation shown in FIG2C , in which the second transmission position (i.e., the transmission position when the downlink channel is transmitted for the first time) is located, which may be time slot #10, time slot #12, time slot #14, time slot #16, time slot #18, time slot #0, time slot #2 or time slot #4 in FIG2C , and the first time domain window in which the first transmission position (i.e., the transmission position when the downlink channel is additionally transmitted) is located may be time slot #11, time slot #13, time slot #15, time slot #17, time slot #19, time slot #1, time slot #3 or time slot #5 in FIG2C ; for example, the second time domain window in which the second transmission position of the downlink channel associated with SSB#0 is located may be time slot #10, and the first time domain window in which the first transmission position of the downlink channel associated with SSB#0 is located may be time slot #11. It can be time slot #11; or, the second time domain window where the above-mentioned second transmission position (i.e., the transmission position when the downlink channel is transmitted for the first time) is located can be time slot #11, time slot #13, time slot #15, time slot #17, time slot #19, time slot #1, time slot #3 or time slot #5 in Figure 2C, and the first time domain window where the above-mentioned first transmission position (i.e., the transmission position when the downlink channel is additionally transmitted) is located can be time slot #10, time slot #12, time slot #14, time slot #16, time slot #18, time slot #0, time slot #2 or time slot #4 in Figure 2C; for example, the second time domain window where the second transmission position of the downlink channel associated with SSB#0 is located can be time slot #11, and the first time domain window where the first transmission position of the downlink channel associated with SSB#0 is located can be time slot #10.

[0346] Optionally, in some embodiments, the above-mentioned first transmission position may correspond to a first index (e.g., CSS#0index), wherein the first transmission position may be determined based on the first index and the correspondence, wherein the first index is used to indicate the second transmission position, and the first index is indicated by the network device to the terminal; at this time, when the network device indicates the first index corresponding to the second transmission position, it is equivalent to implicitly indicating the first transmission position.

[0347] Optionally, in some embodiments, the first transmission position may be located in a second time domain window where the second transmission position is located, and the time domain position and / or frequency domain position of the first PMO is different from that of the second PMO. This situation may correspond to the aforementioned "the second time domain window where the second transmission position of the downlink channel associated with SSB#0 is located may be time slot #10, and the first time domain window where the first transmission position of the downlink channel associated with SSB#0 is located may be time slot #11" or "the second time domain window where the second transmission position of the downlink channel associated with SSB#0 is located may be time slot #11, and the first time domain window where the first transmission position of the downlink channel associated with SSB#0 is located may be time slot #10".

[0348] Optionally, in some embodiments, when the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation grade (AL) of the downlink channel is greater than or equal to 16 (wherein, AL can be understood as the number of control channel elements (CCE) contained in a PDCCH), the first PMO in the first transmission position can be the same as the time domain position and frequency domain position of the second PMO in the second transmission position, and the first PMO or the second PMO includes a first PDCCH candidate set and a second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set do not overlap with the second PDCCH candidate set.

[0349] Optionally, at least one second PDCCH candidate in the second PDCCH candidate set may be calculated in the first PMO or the second PMO based on the following formula 1. Formula 1 is as follows:

[0350] The above L is the aggregation level of the downlink channel.

[0351] is the starting position of the PDCCH candidate in the search space, where for the common search space (CSS), For the terminal specific search space (UE specific Search Space, USS), Y p,-1 =n RNTI ≠0,A p =39827 for pmod3=0,A p =39829 for pmod3=1,A p =39839 for pmod3=2, and D=65537, where the mod function is the remainder function.

[0352] i=0,...,L-1.

[0353] N CCE,p is the number of CCEs in CORESET.

[0354] n CI is the carrier indicator field value.

[0355] is the number of PDCCH candidates with aggregation level L.

[0356] Optionally, the above is the floor function.

[0357] Optionally, the formula for calculating the second PDCCH candidate in the second PDCCH candidate set may be n in formula 1. CI The formula obtained by adding the third offset value to , the third offset value can be 1, for example.

[0358] Optionally, Figure 2E is a schematic diagram of different first PDCCH candidate sets and second PDCCH candidate sets in the same PMO according to an embodiment of the present disclosure. As shown in Figure 2E, taking AL=4 as an example, there can be four first PDCCH candidates in the first PDCCH candidate set, wherein the first first PDCCH candidate occupies CCE4-7, the second first PDCCH candidate occupies CCE12-15, the third first PDCCH candidate occupies CCE20-23, and the fourth first PDCCH candidate occupies CCE28-31; there can be four second PDCCH candidates in the second PDCCH candidate set, wherein the first second PDCCH candidate occupies CCE0-3, the second second PDCCH candidate occupies CCE8-11, the third second PDCCH candidate occupies CCE16-19, and the fourth second PDCCH candidate occupies CCE24-27.

[0359] Optionally, in some embodiments, when the AL of the downlink channel is less than 16, the time domain position and frequency domain position of the first PMO in the first transmission position can be the same as the time domain position and frequency domain position of the second PMO in the second transmission position, and the time domain position and frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set are the same, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0360] Optionally, in some embodiments, a link relationship may exist between the first transmission position and the second transmission position; wherein the link relationship may include at least one of the following:

[0361] The AL of the downlink channel carried by the first transmission position is the same as the AL of the downlink channel carried by the second transmission position;

[0362] When the time domain position and / or frequency domain position of the first PMO in the first transmission position is different from that of the second PMO in the second transmission position, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship; for example, the second PDCCH candidate numbered candidate#0 is used in the second PDCCH candidate set of the second PMO to carry the first transmission of the downlink channel, and at the same time, the first PDCCH candidate numbered candidate#0 is also used in the first PDCCH candidate set of the first PMO to carry additional transmissions of the downlink channel; or Alternatively, the second PDCCH candidate numbered candidate#1 is used in the second PDCCH candidate set of the second PMO to carry the first transmission of the downlink channel, and at the same time, the first PDCCH candidate numbered candidate#0 is used in the first PDCCH candidate set of the first PMO to carry an additional transmission of the downlink channel; or, the second PDCCH candidate numbered candidate#0 is used in the second PDCCH candidate set of the second PMO to carry the first transmission of the downlink channel, and at the same time, the first PDCCH candidate numbered candidate#1 is used in the first PDCCH candidate set of the first PMO to carry an additional transmission of the downlink channel.

[0363] The AL of the downlink channel carried at the first transmission position and the AL of the downlink channel carried at the second transmission position are both the maximum AL;

[0364] When the first time domain window where the first transmission position is located is different from the first time domain window where the second transmission position is located, there is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO. For example, the relative position of the first PMO in the first time domain window is the same as the relative position of the second PMO in the second time domain window, such as both are located in the same time slot (such as the first time slot or the last time slot) of their respective time domain windows, or, for example, the first PMO is located in the first time slot of the first time domain window, and the second PMO is located in the second time slot of the second time domain window, or the first PMO is located in the second time slot of the first time domain window, and the second PMO is located in the first time slot of the second time domain window.

[0365] Optionally, in some embodiments, the link relationship between the first transmission position and the second transmission position of the downlink channel associated with different SSB indexes is different or the same; the link method between the first transmission position and the second transmission position corresponding to the downlink channel of different periods is different or the same.

[0366] Optionally, in some embodiments, when determining the first transmission location, the network device may autonomously determine the first transmission location, or may determine the first transmission location based on a protocol agreement. Furthermore, the link relationship between the first transmission location and the second transmission location may be based on a protocol agreement, or may be autonomously determined by the network device.

[0367] Step 2108: The network device indicates the first transmission position to the terminal.

[0368] Step 2109: The network device indicates the link relationship between the first transmission position and the second transmission position to the terminal.

[0369] Step 2110: The terminal determines a first receiving position.

[0370] Optionally, the terminal may determine the first receiving location based on a protocol agreement, or the terminal may determine the first receiving location based on a network device instruction. Optionally, the first receiving location is related to the second receiving location. In some embodiments, the first receiving location is conceptually equivalent to the aforementioned first transmission location, and the second receiving location is conceptually equivalent to the aforementioned second receiving location. For a detailed description of this aspect, please refer to the description of the above embodiments and will not be repeated here.

[0371] Step 2111: The terminal determines a link relationship between the first receiving location and the second receiving location.

[0372] Optionally, the “link relationship between the first receiving position and the second receiving position” is the same concept as the above-mentioned “link relationship between the first transmission position and the second transmission position” and is not repeated here.

[0373] Optionally, the terminal may determine the link relationship between the first receiving location and the second receiving location based on a protocol agreement, or the terminal may determine the link relationship between the first receiving location and the second receiving location based on an indication of a network device.

[0374] Step 2112: The network device performs additional transmission on the downlink channel at the first transmission position based on the number of additional transmissions, the RV sequence, the second transmission position, and the link relationship between the first transmission position and the second transmission position.

[0375] For example, assuming that the number of additional transmissions is M and the link relationship between the first transmission position and the second transmission position is: when the time domain position and / or frequency domain position of the first PMO in the first transmission position and the second PMO in the second transmission position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number. At this time, if the network device uses the second PDCCH candidate numbered candidate#1 of the second PMO in the second transmission position when performing the first transmission on the downlink channel, the network device should also use the first PDCCH candidate numbered candidate#1 of the first PMO in the first transmission position when performing M additional transmissions on the downlink channel.

[0376] Optionally, the terminal may perform additional reception of the downlink channel at the first receiving position based on the number of additional receptions, the second receiving position, and the link relationship between the first receiving position and the second receiving position. For example, assuming that the number of additional receptions is N, and the link relationship between the first receiving position and the second receiving position is: when the time domain position and / or frequency domain position of the first PMO in the first receiving position and the second PMO in the second receiving position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number. At this time, if the network device uses the second PDCCH candidate numbered candidate#1 of the second PMO in the second receiving position when receiving the downlink channel for the first time, the network device should also use the first PDCCH candidate numbered candidate#1 of the first PMO in the first receiving position when performing M additional receptions on the downlink channel.

[0377] It should be noted that in some embodiments, the terminal may combine the first reception and the additional reception of the downlink channel (or perform HARQ Combination on both at the same time). Optionally, the combination may be understood as: the terminal combines the first reception and the additional reception of the downlink channel and uniformly decodes the combined information; or the terminal decodes the first reception of the downlink channel, then decodes the additional reception of the downlink channel, and then combines the decoded information corresponding to the first reception with the decoded information corresponding to the additional reception.

[0378] For the introduction of the RV sequence, please refer to the above embodiments. For details on how the network device sends a downlink channel based on the RV sequence and how the terminal receives a downlink channel based on the RV sequence, please refer to the prior art.

[0379] It should be noted that the terminal mentioned in the embodiment of the present disclosure may be: a terminal that supports receiving the PDCCH that schedules SIB1, and the terminal can process the downlink channel more than once in a time domain unit (such as a time slot), thereby enabling the terminal to perform at least one additional reception of the same downlink channel.

[0380] In the above embodiment, after the network device performs the first transmission on the downlink channel, it will perform additional transmission on the same downlink channel. At the same time, after the terminal receives the downlink channel for the first time, it will also perform additional reception on the same downlink channel. This can increase the number of transmissions on the same downlink channel, thereby enhancing the coverage of the downlink channel, improving the transmission performance of the downlink channel, and increasing the transmission success rate of the downlink channel.

[0381] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2112. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, and steps S2101+S2102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0382] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0383] FIG3A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0384] Step 3101: The terminal determines the number of additional receptions of the downlink channel.

[0385] Step 3102: The terminal determines the RV sequences corresponding to the first reception and additional reception of the downlink channel.

[0386] Step 3103: The terminal determines a first receiving position.

[0387] Step 3104: The terminal determines a link relationship between the first receiving location and the second receiving location.

[0388] Step 3105: The terminal performs additional reception of the downlink channel at the first receiving position based on the number of additional receptions, the RV sequence, the second receiving position, and the link relationship between the first receiving position and the second receiving position.

[0389] For a detailed description of steps 3101 - 3105 , please refer to the above embodiment description.

[0390] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3105. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and steps S3101+S3102 may be implemented as independent embodiments, but are not limited thereto.

[0391] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0392] FIG3B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0393] Step 3201: The terminal determines the number of additional receptions of the downlink channel.

[0394] Step 3202: The terminal determines a first receiving position.

[0395] Step 3203: The terminal additionally receives a downlink channel.

[0396] Optionally, the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0397] Optionally, the first receiving position is a receiving position corresponding to additionally receiving the downlink channel;

[0398] Optionally, the additionally receiving the downlink channel includes:

[0399] The downlink channel is additionally received based on the number of additional receptions and / or the first receiving position.

[0400] Optionally, the information carried by the additionally received downlink channel is the same as the information carried by the firstly received downlink channel.

[0401] Optionally, the first reception of the downlink channel is combined with additional reception.

[0402] Optionally, determining the number of additional receptions of the downlink channel includes at least one of the following:

[0403] Determining the number of additional receptions based on the agreement;

[0404] receiving the number of additional receptions indicated by the network device;

[0405] The number of additional receptions is determined based on channel conditions.

[0406] Optionally, the number of additional receptions indicated by the receiving network device includes:

[0407] The number of additional receptions indicated by the network device through a master information block MIB and / or a physical broadcast channel PBCH is received.

[0408] Optionally, the channel condition includes signal quality, and determining the number of additional receptions based on the channel condition includes:

[0409] The number of additional receptions is determined based on the signal quality and a signal quality threshold, wherein different signal quality thresholds correspond to different numbers of additional receptions.

[0410] Optionally, the method further includes:

[0411] The redundancy version RV sequence corresponding to the first reception and additional transmission of the downlink channel is determined based on protocol agreement and / or network device instruction.

[0412] Optionally, determining the first receiving position includes:

[0413] The CORESET corresponding to the first receiving position is determined based on a first offset value and a first control resource set CORESET, wherein the first offset value is agreed by a protocol and / or indicated by a network, the first CORESET is the CORESET corresponding to the second receiving position, and the second receiving position is the receiving position corresponding to the first reception of the downlink channel.

[0414] Optionally, the CORESET corresponding to the first receiving position is a frequency domain position where an initial downlink bandwidth part DL BWP during initial access of the terminal is located.

[0415] Optionally, the first time domain window where the first receiving position is located includes a first physical downlink control channel monitoring time PMO, the second time domain window where the second receiving position is located includes a second PMO, the first PMO includes at least one first physical downlink control channel PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate;

[0416] The first PMO is used for monitoring the additional reception of the downlink channel, and the second PMO is used for monitoring the first reception of the downlink channel; the additionally received downlink channel is carried by the at least one first PDCCH candidate, and the firstly received downlink channel is carried by the at least one second PDCCH candidate.

[0417] Optionally, determining the first receiving position includes:

[0418] determining the first receiving position based on the second receiving position;

[0419] The first receiving position is a position after the second receiving position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0420] A first time domain window in which the first receiving position is located and a second time domain window in which the second receiving position is located have the same window length, the first time domain window and the second time domain window have different time domain positions, and a relative position of the first PMO in the first time domain window is the same as or different from a relative position of the second PMO in the second time domain window; or

[0421] There is a correspondence between the first receiving position and a first index, and the first receiving position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second receiving position, and the first index is indicated by the network device to the terminal; or

[0422] The first receiving position is located in a second time domain window where the second receiving position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0423] Optionally, determining the first receiving position includes:

[0424] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the time domain position and frequency domain position of the second PMO in the second receiving position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0425] Optionally, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0426] Optionally, the AL of the downlink channel is less than 16, and the determining the first receiving position includes:

[0427] The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the second PMO in the second receiving position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0428] Optionally, a link relationship exists between the first receiving location and the second receiving location; the link relationship includes at least one of the following:

[0429] The AL of the downlink channel carried by the first receiving position is the same as the AL of the downlink channel carried by the second receiving position;

[0430] When the time domain position and / or frequency domain position of the first PMO in the first receiving position and the second PMO in the second receiving position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists;

[0431] The AL of the downlink channel carried by the first receiving position and the AL of the downlink channel carried by the second receiving position are both maximum AL;

[0432] When the first time domain window where the first receiving position is located is different from the first time domain window where the second receiving position is located, there is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0433] Optionally, the additionally receiving the downlink channel based on the first receiving position includes:

[0434] Determine a link relationship between the first receiving location and the second receiving location based on a protocol agreement and / or a network device indication;

[0435] The downlink channel is additionally received at the first receiving position based on the second receiving position and a link relationship between the first receiving position and the second receiving position.

[0436] Optionally, the downlink channel received for the first time and the additionally received downlink channel are associated with the same synchronization signal block SSB index; wherein, in some embodiments, the link relationship between the first receiving position and the second receiving position of the downlink channel associated with different synchronization signal block SSB indexes is different or the same;

[0437] In some other embodiments, the linking modes between the first receiving position and the second receiving position corresponding to downlink channels of different periods are different or the same.

[0438] Optionally, the terminal may process the downlink channel more than once in one time domain unit.

[0439] Optionally, the downlink channel is used to carry downlink control information DCI of the scheduling system message SIB1, and the downlink channel is a physical downlink control channel PDCCH.

[0440] For a detailed description of steps 3201 - 3203 , please refer to the above embodiment description.

[0441] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3203. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and steps S3201+S3202 may be implemented as independent embodiments, but are not limited thereto.

[0442] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0443] FIG4A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method for a network device, the method comprising:

[0444] Step 4101: The network device determines the number of additional transmissions of the downlink channel.

[0445] Step 4102: The network device determines the RV sequences corresponding to the first transmission and additional transmissions of the downlink channel.

[0446] Step 4103: The network device determines the first transmission position.

[0447] Step 4104: The network device determines a link relationship between the first transmission location and the second transmission location.

[0448] Step 4105: The network device performs additional transmission on the downlink channel at the first transmission position based on the number of additional transmissions, the RV sequence, the second transmission position, and the link relationship between the first transmission position and the second transmission position.

[0449] For a detailed description of steps 4101-4105, please refer to the above embodiment description.

[0450] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4105. For example, step S4101 may be implemented as an independent embodiment, step S4102 may be implemented as an independent embodiment, and steps S4101+S4102 may be implemented as independent embodiments, but are not limited thereto.

[0451] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0452] FIG4B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method for a network device, the method comprising:

[0453] Step 4201: The network device determines the number of additional transmissions of the downlink channel.

[0454] Step 4202: The network device determines a first transmission location.

[0455] Step 4203: The network device additionally transmits a downlink channel.

[0456] Optionally, the additional transmission of the downlink channel is: transmission of the downlink channel other than the first transmission of the downlink channel.

[0457] Optionally, the first transmission position is a transmission position corresponding to additional transmission of the downlink channel.

[0458] Optionally, the additionally transmitting the downlink channel includes:

[0459] The downlink channel is additionally transmitted based on the number of additional transmissions and / or the first transmission position.

[0460] Optionally, the information carried by the additionally transmitted downlink channel is the same as the information carried by the firstly transmitted downlink channel.

[0461] Optionally, determining the number of additional transmissions of the downlink channel includes at least one of the following:

[0462] Determining the number of additional transmissions based on the protocol;

[0463] The network device autonomously determines the number of additional transmissions.

[0464] Optionally, the method further includes:

[0465] The network device indicates the number of additional transmissions to the terminal through the MIB and / or PBCH.

[0466] Optionally, the method further includes:

[0467] The network device indicates to the terminal the redundant version (RV) sequences corresponding to the first transmission and additional transmissions of the downlink channel.

[0468] Optionally, determining the first transmission position includes:

[0469] The CORESET corresponding to the first transmission position is determined based on the first offset value and the first control resource set CORESET, wherein the first offset value is agreed upon by the protocol and / or determined autonomously by the network, the first CORESET is the CORESET corresponding to the second transmission position, and the second transmission position is the transmission position corresponding to the first transmission of the downlink channel.

[0470] Optionally, the CORESET corresponding to the first transmission position is the frequency domain position of an initial DL BWP during initial access of the terminal.

[0471] Optionally, the first time domain window where the first transmission position is located includes a first PMO, the second time domain window where the second transmission position is located includes a second PMO, the first PMO includes at least one first PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes the at least one first PDCCH candidate, and the second PDCCH candidate set includes the at least one second PDCCH candidate;

[0472] The additionally transmitted downlink channel is carried by at least one first PDCCH candidate, and the firstly transmitted downlink channel is carried by at least one second PDCCH candidate.

[0473] Optionally, determining the first transmission position includes:

[0474] determining the first transmission position based on the second transmission position;

[0475] The first transmission position is a position after the second transmission position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or

[0476] A first time domain window in which the first transmission position is located and a second time domain window in which the second transmission position is located have the same window length, the first time domain window and the second time domain window have different time domain positions, and a relative position of the first PMO in the first time domain window is the same as or different from a relative position of the second PMO in the second time domain window; or

[0477] There is a correspondence between the first transmission position and a first index, the first transmission position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second transmission position, and the first index is indicated by the network device to the terminal; or

[0478] The first transmission position is located in a second time domain window where the second transmission position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

[0479] Optionally, determining the first transmission position includes:

[0480] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the time domain position and frequency domain position of the second PMO in the second transmission position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set and the second PDCCH candidate set do not overlap.

[0481] Optionally, the transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

[0482] Optionally, the AL of the downlink channel is less than 16, and the determining the first transmission position includes:

[0483] The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the second PMO in the second transmission position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

[0484] Optionally, a link relationship exists between the first transmission position and the second transmission position; the link relationship includes at least one of the following:

[0485] The AL of the downlink channel carried by the first transmission position is the same as the AL of the downlink channel carried by the second transmission position;

[0486] When the time domain position and / or frequency domain position of the first PMO in the first transmission position and the second PMO in the second transmission position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists;

[0487] The AL of the downlink channel carried by the first transmission position and the AL of the downlink channel carried by the second transmission position are both maximum AL;

[0488] When the first time domain window where the first transmission position is located is different from the first time domain window where the second transmission position is located, a link relationship exists between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

[0489] Optionally, the additionally transmitting the downlink channel based on the first transmission position includes:

[0490] Determining a link relationship between the first transmission location and the second transmission location based on a protocol agreement and / or autonomously by a network device;

[0491] The downlink channel is additionally transmitted at the first transmission position based on the second transmission position and a link relationship between the first transmission position and the second transmission position.

[0492] Optionally, the downlink channel transmitted for the first time and the downlink channel transmitted additionally are associated with the same synchronization signal block SSB index; wherein, the link relationship between the first transmission position and the second transmission position of the downlink channels associated with different SSB indexes is different or the same.

[0493] Optionally, the link modes between the first transmission position and the second transmission position corresponding to downlink channels of different periods are different or the same.

[0494] Optionally, the terminal may process the downlink channel more than once in one time domain unit.

[0495] Optionally, the downlink channel is used to carry DCI for scheduling SIB1, and the downlink channel is PDCCH.

[0496] For a detailed description of steps 4201-4203, please refer to the above embodiment description.

[0497] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4203. For example, step S4201 may be implemented as an independent embodiment, step S4202 may be implemented as an independent embodiment, and steps S4201+S4202 may be implemented as independent embodiments, but are not limited thereto.

[0498] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0499] Figure 5A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5A, the embodiment of the present disclosure relates to a communication method for a communication system including a terminal and a network device, wherein the method includes at least one of the following:

[0500] Step 5101: The network device determines the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: the transmission of the downlink channel in addition to the first transmission of the downlink channel;

[0501] Step 5102: The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel.

[0502] Step 5103: The network device transmits an additional downlink channel;

[0503] Step 5104: The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel in addition to the first reception of the downlink channel;

[0504] Step 5105: The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to additionally receiving the downlink channel.

[0505] Step 5106: The terminal additionally receives a downlink channel;

[0506] Optional implementations of steps 5101 to 5106 can be found in the above embodiments.

[0507] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0508] The communication method involved in the embodiment of the present disclosure may include at least one of steps S5101 to S5106. For example, step S5101 may be implemented as an independent embodiment, and step S5102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0509] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0510] The following is an exemplary introduction to the above method.

[0511] After the UE successfully receives the SSB, the first channel received with a performance gap is the PDCCH channel that schedules SIB1. It is necessary to consider how to enhance this channel.

[0512] The enhanced scheme for scheduling SIB1 PDCCH can be called additional SIB1 PDCCH transmission. For example, for SIB1 PDCCH Coverage Enhancement, M additional SIB1 PDCCHs are transmitted. The SIB1 PDCCH is required to have the same information bits as the legacy PDCCH to which it is linked. For another example, the terminal simultaneously receives the legacy SIB1 PDCCH and the additional SIB1 PDCCH and performs HARQ combining on both. For another example, for the same DCI contents, M additional SIB1 PDCCHs can be introduced, where M>=1. The value of M can be specified by the protocol or indicated by the base station.

[0513] The base station can indicate the value of M in various ways, which are not limited here. The following exemplifies several methods for determining M.

[0514] For example, the base station may indicate this through the MIB. Currently, the MIB has a 1-bit spare field, for example, when M=0, the spare bit = "0"; when M=1, the spare bit = "1".

[0515] For another example, through PBCH indication; when the carrier frequency is less than 6 GHz, there is 2 bits of reserved information, and at least one of them is used to indicate the additional SIB1 PDCCH transmission number.

[0516] Another example is the PBCH + MIB indication; for example, the MIB indicates the most significant bit, and the reserved bits in the PBCH indicate the least significant bits. One possible implementation uses one spare bit in the MIB + two reserve bits in the PBCH to indicate a codepoint. For example, "100," where M = 4, means the terminal receives the same PDCCH content five times. Alternatively, three bits can indicate a set index, where the set number of transmissions is specified by the protocol.

[0517] For the terminal, if the UE capability can support the reception of additional SIB1 PDCCH, the terminal receives M additional SIB1 PDCCHs; or when the RSRP is less than a certain threshold, the terminal receives N (N<=M) additional SIB1 PDCCHs, where N can be a single value or a value set. For example, if N is a single value, it corresponds to an RSRP threshold; for another example, if N is a value set, each value corresponds to an RSRP threshold. Furthermore, the RSRP threshold(s) can be specified by the protocol or indicated by the base station. The UE can send capability information, which is used to indicate whether the UE supports the reception of additional SIB1 PDCCH.

[0518] The additional transmission of M SIB1 PDCCHs may refer to adding M additional transmissions of SIB1 PDCCHs for each SIB1 PDCCH associated with a specific SSB index. The M values ​​for different SSB indices may be different or the same. Only some SSB indices may support additional transmission, i.e., some SSB indices may not support additional transmission. If only some SSB indices support additional transmission, the UE may be pre-indicated as to the SSB indices that support additional transmission.

[0519] Optionally, to improve transmission performance, it is considered to introduce RV sequence cycling for additional SIB1 PDCCH transmission.

[0520] For example, an RV sequence of {0,3} (for M>=1) or {0,2} or {0,2,3,1} (for M>=3) is used for additional SIB1 PDCCH transmission. The default value for legacy SIB1 PDCCH transmission, i.e., the first SIB1 PDCCH transmission, is RV#0. The RV sequence can be a default value specified by the protocol or indicated by the base station. For example, if RV sequence = {0,3}, when M = 1, the terminal receives one legacy PDCCH and one additional PDCCH, and the corresponding redundancy versions are {0,3}, respectively. When M = 2, the terminal receives one legacy PDCCH and two additional PDCCHs, and the corresponding redundancy versions are {0,3,0}, respectively.

[0521] Furthermore, there are several methods for determining the transmission position of the additional SIB1 PDCCH:

[0522] For example, the frequency domain resources of the transmission position of the additional SIB1 PDCCH can be an independent CORESET. Optionally, the frequency domain resources are implicitly determined by some rules, for example, the frequency domain resources of the transmission position of the additional SIB1 PDCCH are determined from the offset of the traditional CORESET#0. Optionally, the frequency domain resources of the transmission position of the additional SIB1 PDCCH can also be used as the initial DL BWP during the initial access process.

[0523] For another example, the transmission position of the additional SIB1 PDCCH corresponds to a separate search space or a separate PMO. Optionally, the separate search space can be implicitly determined by some rules, that is, it has a certain relationship with the traditional search space #0. For example, it can be a certain time offset (symbol level, time slot level, half-frame or frame level) from the traditional search space #0, or it can have the same time position as the traditional search space #0 within the time period, but the two SSs have different time periods, and / or the time period of the additional PDCCH can be a time domain position after the time period / window of CSS#0 is delayed. Alternatively, the separate CSS#0 index is implicitly determined by the traditional CSS#0 index, that is, there is a certain correspondence between the CSS#0 index and the transmission position of the additional SIB1 PDCCH corresponding to the separate CSS#0 index. When the traditional CSS#0 index is indicated, it is equivalent to indicating that the transmission position of the additional PDCCH corresponds to the separate CSS#0 index.

[0524] For another example, the transmission position of the additional SIB1 PDCCH can be located at the next position in multiplexing mode 1 (i.e., in time slots #5-9), and the transmission position of the additional SIB1 PDCCH has the same symbol distribution as time slots #0-4 (i.e., the transmission position of the legacy SIB1 PDCCH). In other words, the transmission position of the additional SIB1 PDCCH is an offset from the transmission position of the legacy SIB1 PDCCH, and the offset can be N_offset>=5 symbols.

[0525] For another example, for SSB&CORESET#0 multiplexing pattern 1, when M in the PMO determination table is 1 or 2, it is also possible to consider transmitting the additional SIB1 PDCCH and the legacy SIB1 PDCCH on the PMOs in the two slots within the duration window respectively.

[0526] For another example, as shown in FIG2C , for SSB#0, the legacy PDCCH transmission position may be located in slot#10, and the additional SIB1 PDCCH transmission position may be located in slot#11, or vice versa.

[0527] For another example, the transmission position of additional SIB1 PDCCH and the transmission position of legacy SIB1 PDCCH correspond to the same PMO, but correspond to different PDCCH candidates (ie, separate PDCCH candidates within the same PMO scheme). Optionally, for additional SIB1 PDCCH, an offset factor = 1 can be added to the above formula 1, which is exactly in n CI After that, the PDCCH candidates of the given ALs set are determined, or the PDCCH candidates of the given ALs set are specified in the above formula 1.

[0528] Based on the above, refer to FIG. 2E , where the white CCE is the transmission location of the additional SIB1 PDCCH.

[0529] In addition, when the number of CCEs is greater than 32, the following methods may also be included:

[0530] Optionally, when AL<16, additional SIB1 PDCCH can use the same PDCCH candidates set as legacy SIB1 PDCCH, but be transmitted on different PDCCH candidates. The NTN DL CE terminal needs to merge the two PDCCH candidates for decoding. Optionally, different bands, different CORESET / search space configurations or different multiplexing patterns can adopt the above different schemes. For example, for multiplexing pattern #2 or multiplexing pattern #3, the separate PDCCH candidates within the same PMO scheme is not used, or when the number of CCEs in CORESET #0 is less than S, the PDCCH candidates within the same PMO scheme is not used. Another possible way is that the terminal does not expect the number of CCEs to be less than 32. Accordingly, the configuration table needs to be extended under certain SCS combinations.

[0531] Optionally, in order to minimize the complexity of HARQ combining and decoding when the terminal performs BD, consider that the transmission resources of legacy SIB1 PDCCH and additional SIB1 PDCCH have one or more of the following link relationships:

[0532] Use the same AL;

[0533] For transmissions in two different PMOs or different search spaces (including different time domain positions and / or different frequency domain positions), the same PDCCH candidate or a PDCCH candidate number with a certain association is used; for example, both use candidate #0, or both use candidate #1, or legacy uses #0 and additional uses #1, or vice versa.

[0534] The AL used by the SIB1 PDCCH in the cell where the terminal expects to support CE is the maximum AL;

[0535] The PDCCH monitoring occasions of legacy SIB1 PDCCH and additional SIB1 PDCCH have a certain correlation; for example, for CORESET&SSB multiplexing pattern #1, a terminal continuously monitors SIB1 PDCCH on two slots for an associated SSB index. If the PMO time period between two legacy SIB1 PDCCHs and additional SIB1 PDCCHs is different. Then, the time domain positions between the two can be correlated. For example, the PDCCH monitor occasions between legacy SIB1 PDCCH and additional SIB1 PDCCH are the same in relative time domain positions within their respective monitoring windows (2 slots), for example, both are located in the same slot (the first or the last of the two slots). Alternatively, the slot position correlation relationship of the PMO between legacy SIB1 PDCCH and additional SIB1 PDCCH is slot#1, slot#2 or slot#2, slot#1, etc.

[0536] Optionally, one of the above-mentioned multiple link relationships may be indicated by the base station, or one of them may be specified by the protocol.

[0537] Optionally, the above link relationship may be different for different SSB indexes or between different SIB1 repetition periods (such as 20ms).

[0538] Optionally, the limitation on the number of DCI processes in a time slot can be enhanced. For example, for DCI format 1-0 scrambled with the System Information-Radio Network Temporary Identifier (SI-RNTI), a terminal that supports / on demand reception of additional SIB1 PDCCH can perform M (number of additional PDCCH) + 1 processing in the same slot.

[0539] Optionally, this solution is also applicable to paging DCI transmitted in search space zero, and DCI carried by PDCCH channels such as Msg1DCI, Msg2DCI, Msg3DCI, and Msg4 DCI.

[0540] As can be seen from the above content, the present invention proposes an additional SIB1 PDCCH transmission method to enable the terminal to perform HARQ combined reception of PDCCH, improve SIB1 PDCCH reception performance, and enhance coverage.

[0541] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0542] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0543] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0544] FIG6A is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6A , it includes:

[0545] a processing module, configured to determine a number of additional receptions of a downlink channel; the additional reception of the downlink channel being: reception of the downlink channel in addition to the first reception of the downlink channel;

[0546] The processing module is further configured to determine a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received;

[0547] The receiving module is used to additionally receive downlink channels.

[0548] Optionally, the processing module is configured to execute the steps related to "processing" performed by the terminal in any of the above methods, the receiving module is configured to execute the steps related to receiving performed by the terminal in any of the above methods, and the terminal may further include a sending module configured to execute the steps related to "sending" performed by the terminal in any of the above methods. These details will not be repeated here.

[0549] FIG6B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure. As shown in FIG6B , it includes:

[0550] a processing module, configured to determine a number of additional transmissions of a downlink channel; wherein the additional transmission of the downlink channel is: transmissions performed on the downlink channel in addition to the first transmission of the downlink channel;

[0551] The processing module is further configured to determine a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel;

[0552] The sending module is used for additional transmission of downlink channels.

[0553] Optionally, the processing module is configured to execute steps related to "processing" performed by the network device in any of the above methods, the sending module is configured to execute steps related to sending performed by the network device in any of the above methods, and the network device may further include a receiving module configured to execute steps related to "receiving" performed by the network device in any of the above methods. These details will not be repeated here.

[0554] Optionally, the first position in the uplink transmission received by the network device does not carry a data symbol, wherein the first position is the uplink resource position corresponding to the data symbol of the uplink transmission, and the first position is the same as the delay position of the uplink resource position corresponding to the DMRS of the uplink transmission.

[0555] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0556] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0557] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0558] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0559] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0560] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0561] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0562] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0563] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0564] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0565] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0566] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0567] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0568] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0569] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0570] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0571] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0572] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method comprises: The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel other than the first reception of the downlink channel; The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received; The terminal additionally receives the downlink channel.

2. The method according to claim 1, characterized in that The additionally receiving the downlink channel comprises: The downlink channel is additionally received based on the number of additional receptions and / or the first receiving position.

3. The method according to claim 1 or 2, characterized in that The information carried by the additionally received downlink channel is the same as the information carried by the firstly received downlink channel.

4. The method according to any one of claims 1 to 3, characterized in that: The first reception of the downlink channel is combined with the additional reception.

5. The method according to any one of claims 1 to 4, characterized in that: The determining of the number of additional receptions of the downlink channel comprises at least one of the following: Determining the number of additional receptions based on the agreement; receiving the number of additional receptions indicated by the network device; The number of additional receptions is determined based on channel conditions.

6. The method according to claim 5, characterized in that The number of additional receptions indicated by the receiving network device includes: The number of additional receptions indicated by the network device through a master information block MIB and / or a physical broadcast channel PBCH is received.

7. The method according to claim 5, characterized in that The channel condition includes signal quality, and determining the number of additional receptions based on the channel condition includes: The number of additional receptions is determined based on the signal quality and a signal quality threshold, wherein different signal quality thresholds correspond to different numbers of additional receptions.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: The redundancy version RV sequence corresponding to the additional transmission of the downlink channel is determined based on the protocol agreement and / or the network device instruction.

9. The method according to any one of claims 1 to 8, characterized in that: The determining of the first receiving position comprises: The CORESET corresponding to the first receiving position is determined based on a first offset value and a first control resource set CORESET, wherein the first offset value is agreed upon by a protocol and / or indicated by a network, the first CORESET is the CORESET corresponding to the second receiving position, and the second receiving position is the receiving position corresponding to the first reception of the downlink channel.

10. The method according to claim 9, characterized in that The CORESET corresponding to the first receiving position is a frequency domain position where an initial downlink bandwidth part DL BWP during initial access of the terminal is located.

11. The method according to any one of claims 1 to 10, characterized in that: The first time domain window where the first receiving position is located includes a first physical downlink control channel monitoring time PMO, the second time domain window where the second receiving position is located includes a second PMO, the first PMO includes at least one first physical downlink control channel PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate; The first PMO is used for monitoring the additional reception of the downlink channel, and the second PMO is used for monitoring the first reception of the downlink channel; the additionally received downlink channel is carried by the at least one first PDCCH candidate, and the firstly received downlink channel is carried by the at least one second PDCCH candidate.

12. The method according to claim 11, characterized in that The determining of the first receiving position comprises: determining the first receiving position based on the second receiving position; The first receiving position is a position after the second receiving position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or A first time domain window where the first receiving position is located has the same window length as a second time domain window where the second receiving position is located, and the first time domain window and the second time domain window have different time domain positions; or There is a correspondence between the first receiving position and the first index, and the first receiving position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second receiving position, and the first index is indicated by the network device to the terminal; or The first receiving position is located in a second time domain window where the second receiving position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

13. The method according to claim 11, characterized in that The determining of the first receiving position comprises: The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the second PMO in the second receiving position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set does not overlap with that of the second PDCCH candidate set.

14. The method according to claim 13, characterized in that The transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

15. The method according to claim 11, characterized in that The AL of the downlink channel is less than 16, and the determining of the first receiving position includes: The first receiving position is determined based on the second receiving position; wherein the time domain position and frequency domain position of the first PMO in the first receiving position are the same as the second PMO in the second receiving position, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

16. The method according to any one of claims 9 to 15, characterized in that: There is a link relationship between the first receiving position and the second receiving position; the link relationship includes at least one of the following: The AL of the downlink channel carried by the first receiving position is the same as the AL of the downlink channel carried by the second receiving position; When the time domain position and / or frequency domain position of the first PMO in the first receiving position and the second PMO in the second receiving position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists; The AL of the downlink channel carried at the first receiving position and the AL of the downlink channel carried at the second receiving position are both maximum ALs; When the first time domain window where the first receiving position is located is different from the first time domain window where the second receiving position is located, there is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

17. The method according to claim 16, characterized in that The additionally receiving the downlink channel based on the first receiving position includes: Determine a link relationship between the first receiving location and the second receiving location based on a protocol agreement and / or a network device indication; The downlink channel is additionally received at the first receiving position based on the second receiving position and a link relationship between the first receiving position and the second receiving position.

18. The method according to claim 16 or 17, characterized in that The downlink channel received for the first time and the downlink channel received additionally are associated with the same synchronization signal block SSB index, and the link relationship between the first receiving position and the second receiving position of the downlink channels associated with different SSB indexes is different or the same.

19. The method according to claim 18, characterized in that The link modes between the first receiving position and the second receiving position corresponding to downlink channels of different periods are different or the same.

20. The method according to any one of claims 1 to 19, characterized in that: The terminal may process the downlink channel more than once in one time domain unit.

21. The method according to any one of claims 1 to 20, characterized in that: The downlink channel is used to carry downlink control information DCI of the scheduling system message SIB1, and the downlink channel is a physical downlink control channel PDCCH.

22. A communication method, characterized in that: The method comprises: The network device determines the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: the transmission of the downlink channel other than the first transmission of the downlink channel; The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to the additional transmission of the downlink channel; The network device additionally transmits the downlink channel.

23. The method of claim 22, wherein: The additionally transmitting the downlink channel comprises: The downlink channel is additionally transmitted based on the number of additional transmissions and / or the first transmission position.

24. The method of claim 22, wherein: The information carried by the additionally transmitted downlink channel is the same as the information carried by the firstly transmitted downlink channel.

25. The method according to any one of claims 22 to 24, characterized in that: The determining the number of additional transmissions of the downlink channel comprises at least one of the following: Determining the number of additional transmissions based on the protocol agreement; The network device autonomously determines the number of additional transmissions.

26. The method of claim 25, wherein: The method further comprises: The network device indicates the number of additional transmissions to the terminal through the MIB and / or the PBCH.

27. The method according to any one of claims 22 to 26, characterized in that: The method further comprises: The network device indicates to the terminal a redundant version RV sequence corresponding to additional transmission of the downlink channel.

28. The method according to any one of claims 22 to 27, characterized in that: The determining of the first transmission position comprises: The CORESET corresponding to the first transmission position is determined based on a first offset value and a first CORESET, wherein the first offset value is determined by a protocol agreement and / or autonomously by a network, the first CORESET is the CORESET corresponding to the second transmission position, and the second transmission position is the transmission position corresponding to the first transmission of the downlink channel.

29. The method of claim 28, wherein: The CORESET corresponding to the first transmission position is the frequency domain position where the initial DL BWP during the initial access of the terminal is located.

30. The method according to any one of claims 22 to 29, characterized in that: The first time domain window where the first transmission position is located includes a first PMO, the second time domain window where the second transmission position is located includes a second PMO, the first PMO includes at least one first PDCCH candidate set, the second PMO includes at least one second PDCCH candidate set, the first PDCCH candidate set includes at least one first PDCCH candidate, and the second PDCCH candidate set includes at least one second PDCCH candidate; The downlink channel of the additional transmission is carried by the at least one first PDCCH candidate, and the downlink channel of the first transmission is carried by the at least one second PDCCH candidate.

31. The method of claim 30, wherein: The determining of the first transmission position comprises: determining the first transmission position based on the second transmission position; The first transmission position is a position after the second transmission position is offset by a second offset value, and the second offset value is agreed upon by a protocol and / or indicated by a network; or A first time domain window where the first transmission position is located has the same window length as a second time domain window where the second transmission position is located, and the first time domain window and the second time domain window have different time domain positions; or There is a correspondence between the first transmission position and the first index, the first transmission position is determined based on the first index and the correspondence, wherein the first index is used to indicate the second transmission position, and the first index is indicated by the network device to the terminal; or The first transmission position is located in a second time domain window where the second transmission position is located, and the first PMO and the second PMO have different time domain positions and / or frequency domain positions.

32. The method of claim 30, wherein: The determining of the first transmission position comprises: The first transmission position is determined based on the second transmission position; wherein the time domain position and frequency domain position of the first PMO in the first transmission position are the same as the second PMO in the second transmission position, and the first PMO or the second PMO includes the first PDCCH candidate set and the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate set does not overlap with that of the second PDCCH candidate set.

33. The method of claim 32, wherein: The transmission scheme of the terminal is: multiplexing pattern #1; and / or the aggregation level AL of the downlink channel is greater than or equal to 16.

34. The method of claim 32, wherein: The AL of the downlink channel is less than 16, and the determining of the first transmission position includes: The first transmission position is determined based on the second transmission position; wherein the first PMO in the first transmission position is The time domain position and frequency domain position of the second PMO in the second transmission position are the same, and the time domain position and frequency domain position of the first PDCCH candidate set are the same as those of the second PDCCH candidate set, and the time domain position and / or frequency domain position of the first PDCCH candidate and the second PDCCH candidate do not overlap.

35. The method according to any one of claims 28 to 34, characterized in that: There is a link relationship between the first transmission position and the second transmission position; the link relationship includes at least one of the following: The AL of the downlink channel carried at the first transmission position is the same as the AL of the downlink channel carried at the second transmission position; When the time domain position and / or frequency domain position of the first PMO in the first transmission position and the second PMO in the second transmission position are different, the first PDCCH candidate for carrying the downlink channel in the first PDCCH candidate set and the second PDCCH candidate for carrying the downlink channel in the second PDCCH candidate set have the same number or a link relationship exists; The AL of the downlink channel carried at the first transmission position and the AL of the downlink channel carried at the second transmission position are both maximum AL; When the first time domain window where the first transmission position is located is different from the first time domain window where the second transmission position is located, there is a link relationship between the time domain position and / or frequency domain position of the first PMO and the time domain position and / or frequency domain position of the second PMO.

36. The method of claim 35, wherein: The additionally transmitting the downlink channel based on the first transmission position includes: Determine a link relationship between the first transmission location and the second transmission location based on a protocol agreement and / or autonomously by a network device; The downlink channel is additionally transmitted at the first transmission position based on the second transmission position and a link relationship between the first transmission position and the second transmission position.

37. The method according to claim 35 or 36, characterized in that The downlink channel transmitted for the first time and the downlink channel transmitted additionally are associated with the same synchronization signal block SSB index, and the link relationship between the first transmission position and the second transmission position of the downlink channels associated with different SSB indexes is different or the same.

38. The method of claim 37, wherein: The link modes between the first transmission position and the second transmission position corresponding to downlink channels of different periods are different or the same.

39. The method according to any one of claims 22 to 38, characterized in that: The terminal may process the downlink channel more than once in one time domain unit.

40. The method according to any one of claims 22 to 39, characterized in that: The downlink channel is used to carry the DCI for scheduling SIB1, and the downlink channel is the PDCCH.

41. A communication method, characterized in that: Used in a communication system, the communication system includes a terminal and a network device, and the method includes at least one of the following: The network device determines the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: transmission of the downlink channel other than the first transmission of the downlink channel; The network device determines a first transmission position, where the first transmission position is a transmission position corresponding to additional transmission of the downlink channel; The network device additionally transmits the downlink channel; The terminal determines the number of additional receptions of the downlink channel; the additional reception of the downlink channel is: reception of the downlink channel other than the first reception of the downlink channel; The terminal determines a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received; The terminal additionally receives the downlink channel.

42. A terminal comprising at least one of the following: A processing module, used to determine the number of additional receptions of a downlink channel; the additional reception of the downlink channel is: reception of the downlink channel other than the first reception of the downlink channel; The processing module is further used to determine a first receiving position, where the first receiving position is a receiving position corresponding to when the downlink channel is additionally received; The receiving module is used to additionally receive the downlink channel.

43. A network device comprising at least one of the following: A processing module is used to determine the number of additional transmissions of the downlink channel; the additional transmission of the downlink channel is: Transmissions on the downlink channel other than the first transmission; The processing module is further used to determine a first transmission position, where the first transmission position is a transmission position corresponding to the additional transmission of the downlink channel; The sending module is used for additionally transmitting the downlink channel.

44. A communication device, characterized in that: include: one or more processors; The one or more processors are used to call instructions so that the communication device executes the communication method described in any one of claims 1-21 and 22-40.

45. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 21, and the network device is configured to implement the communication method according to any one of claims 22 to 40.

46. ​​A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-21 and 22-40.

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