Channel Transmission Method and Apparatus, Storage Medium

Abstract

The present disclosure provides a channel transmission method, apparatus, and storage medium. The method includes: determining a target number of repetition transmissions corresponding to the polarization mode used by the terminal based on indication information sent by a base station; and transmitting a PRACH on random access resources according to the target number of repetition transmissions. The present disclosure can determine the corresponding target number of PRACH repetition transmissions for terminals using different polarization modes, effectively compensating for polarization loss for terminals with polarization loss and effectively reducing terminal power loss for terminals without polarization loss, resulting in high availability.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a channel transmission method and device, and a storage medium. Background Art

[0002] In non-terrestrial networks (NTNs), satellite antennas often use circular polarization, while ground-based terminals, depending on their type, may use either circular or linear polarization. A mismatch between the polarization of the base station and terminal antennas can cause polarization loss. This loss can be compensated for by repeated transmissions.

[0003] When repeatedly transmitting the Physical Random Access Channel (PRACH), if the ground terminal is multiplexed, that is, if no feedback is received from the base station within a period of time (the feedback here can be Message 2 or Message 4 in the random access process), and the preamble is resent, the round-trip time (RTT) in the NTN is long, which will reduce efficiency.

[0004] If the repeated transmission method of the Physical Random Access Channel (NPRACH) in the Narrowband Internet of Things (NB-IoT) is reused, for terminals covered by the NTN, in the case of the same polarization mode, such as when the satellite polarization mode is the same as the terminal polarization mode, the terminal does not need to transmit the preamble multiple times. If the repetition number is configured for all terminals, it will lead to resource waste and terminal power consumption. Summary of the Invention

[0005] To overcome the problems existing in the related art, the embodiments of the present disclosure provide a channel transmission method and device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a channel transmission method is provided, the method being applied to a terminal, including:

[0007] Based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal is determined; and a physical random access channel PRACH is sent on the random access resource according to the target number of repeated transmissions.

[0008] Optionally, the method further includes:

[0009] receiving the indication information broadcast by the base station through a system message.

[0010] Optionally, the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type.

[0011] Optionally, the determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes:

[0012] Based on the indication information, the number of repeated transmissions corresponding to the terminal polarization type adopted by the terminal is used as the target number of repeated transmissions.

[0013] Optionally, the indication information is used to indicate at least one of a downlink polarization mode and an uplink polarization mode.

[0014] Optionally, the determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes:

[0015] Determining a repetition transmission coefficient based on the indicated uplink polarization mode and the polarization mode adopted by the terminal;

[0016] The product of the repetition transmission coefficient and the preset number of transmissions of the PRACH is used as the target number of repetition transmissions.

[0017] Optionally, the determining of the repetition transmission coefficient based on the indicated uplink polarization mode and the polarization mode adopted by the terminal includes:

[0018] In response to determining that the indicated uplink polarization mode is the same as the polarization mode used by the terminal, determining the repetition transmission coefficient to be 1;

[0019] In response to determining that the indicated uplink polarization mode is different from the polarization mode adopted by the terminal, determining the repetition transmission coefficient to be 2.

[0020] Optionally, the method further includes:

[0021] In a case where the indication information is only used to indicate the downlink polarization mode, it is determined that the indicated uplink polarization mode is the same as the indicated downlink polarization mode.

[0022] Optionally, the method further includes:

[0023] The indication information is received, which is sent by the base station through a physical downlink control channel (PDCCH).

[0024] Optionally, the indication information is carried in downlink control information DCI carried by the PDCCH.

[0025] Optionally, the indication information is used to indicate the number of repeated transmissions;

[0026] The determining, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes:

[0027] The target number of repeated transmissions is determined based on a value indicated by a designated information field in the DCI.

[0028] Optionally, the designated information field is an information field in the DCI used to indicate the number of repeated transmissions, or the designated information field is an information field corresponding to a multiplexed preamble code index.

[0029] Optionally, the indication information is used to indicate a target preamble code;

[0030] The determining, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes:

[0031] Determining a target preamble category to which the target preamble belongs based on the preamble categories to which different preambles belong;

[0032] Based on a predefined correspondence between preamble categories and repeated transmission times, the repeated transmission times corresponding to the target preamble category are used as the target repeated transmission times.

[0033] Optionally, the method further includes:

[0034] Receive radio resource control RRC signaling sent by the base station; wherein the RRC signaling is used to indicate the preamble category to which different preambles belong.

[0035] Optionally, the indication information is used to indicate that the target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

[0036] Optionally, sending the PRACH according to the target number of repeated transmissions on the random access resource includes:

[0037] On an available random access opportunity RO in the random access resource, a preamble for random access is sent according to the target number of repeated transmissions.

[0038] According to a second aspect of an embodiment of the present disclosure, a channel transmission method is provided, where the method is applied to a base station and includes:

[0039] Sending indication information to the terminal; wherein the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal;

[0040] A physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on the random access resource.

[0041] Optionally, the sending instruction information to the terminal includes:

[0042] The indication information is broadcasted via a system message.

[0043] Optionally, the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type.

[0044] Optionally, the method further includes:

[0045] Among one or more candidate numbers of repeated transmissions corresponding to each terminal polarization type agreed upon in the protocol, a number of repeated transmissions corresponding to each terminal polarization type that needs to be sent to the terminal is determined.

[0046] Optionally, the indication information is used to indicate at least one of a downlink polarization mode and an uplink polarization mode.

[0047] Optionally, the sending instruction information to the terminal includes:

[0048] The indication information is sent to the terminal via a physical downlink control channel PDCCH.

[0049] Optionally, the indication information is carried in downlink control information DCI carried by the PDCCH.

[0050] Optionally, the indication information is used to indicate the number of repeated transmissions, and the indication information is carried in a designated information field of the DCI.

[0051] Optionally, the designated information field is an information field in the DCI used to indicate the number of repeated transmissions, or the designated information field is an information field corresponding to a multiplexed preamble code index.

[0052] Optionally, the indication information is used to indicate a target preamble code.

[0053] Optionally, the method further includes:

[0054] Sending radio resource control (RRC) signaling to the terminal; wherein the RRC signaling is used to indicate the preamble category to which different preambles belong.

[0055] Optionally, the indication information is used to indicate that the target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

[0056] Optionally, the receiving, on the random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions includes:

[0057] On an available RO in the random access resource, a preamble code for random access sent by the terminal according to the target number of repeated transmissions is received.

[0058] According to a third aspect of an embodiment of the present disclosure, a channel transmission device is provided, where the device is applied to a terminal and includes:

[0059] a determination module configured to determine, based on indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal;

[0060] The first sending module is configured to send a physical random access channel PRACH on a random access resource according to the target number of repeated transmissions.

[0061] According to a fourth aspect of an embodiment of the present disclosure, a channel transmission device is provided, where the device is applied to a base station and includes:

[0062] A second sending module is configured to send indication information to the terminal; wherein the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal;

[0063] The receiving module is configured to receive, on a random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions.

[0064] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute the channel transmission method described in any one of the above-mentioned terminal sides.

[0065] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute the channel transmission method described in any one of the above-mentioned base station sides.

[0066] According to a seventh aspect of an embodiment of the present disclosure, a channel transmission device is provided, including:

[0067] processor;

[0068] a memory for storing processor-executable instructions;

[0069] The processor is configured to execute any one of the channel transmission methods described above on the terminal side.

[0070] According to an eighth aspect of an embodiment of the present disclosure, a channel transmission device is provided, including:

[0071] processor;

[0072] a memory for storing processor-executable instructions;

[0073] The processor is configured to execute any one of the channel transmission methods described above on the base station side.

[0074] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0075] In an embodiment of the present disclosure, a terminal can determine a target number of repetitions corresponding to the polarization mode used by the terminal based on indication information sent by a base station, and transmit a PRACH on a random access resource according to the target number of repetitions. The present disclosure can determine a corresponding target number of PRACH repetitions for terminals with different polarization modes, effectively compensating for polarization loss for terminals with polarization loss and effectively reducing terminal power loss for terminals without polarization loss, resulting in high availability.

[0076] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0078] Figure 1 The figure is a flow chart showing a channel transmission method according to an exemplary embodiment.

[0079] Figure 2 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0080] Figure 3A The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0081] Figure 3B The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0082] Figure 4 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0083] Figure 5A The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0084] Figure 5B The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0085] Figure 5CThe figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0086] Figure 6 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0087] Figure 7A The figure is a schematic diagram showing a method of sending a preamble based on a target number of repeated transmissions according to an exemplary embodiment.

[0088] Figure 7B The figure is a schematic diagram showing a method of sending a preamble based on a target number of repeated transmissions according to an exemplary embodiment.

[0089] Figure 8 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0090] Figure 9 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0091] Figure 10A The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0092] Figure 10B The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0093] Figure 11 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0094] Figure 12A The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0095] Figure 12B The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0096] Figure 12C The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0097] Figure 13 The figure is a flowchart of another channel transmission method according to an exemplary embodiment.

[0098] Figure 14 The figure is a block diagram of a channel transmission device according to an exemplary embodiment.

[0099] Figure 15 is a block diagram of another channel transmission device according to an exemplary embodiment.

[0100] Figure 16 It is a structural diagram of a channel transmission device according to an exemplary embodiment of the present disclosure.

[0101] Figure 17 It is a structural diagram of another channel transmission device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0102] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0103] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of at least one of the associated listed items.

[0104] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0105] The following first introduces the channel transmission method provided by the present disclosure from the terminal side.

[0106] The present disclosure provides a channel transmission method, referring to Figure 1 As shown, Figure 1 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0107] In step 101, based on indication information sent by a base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal is determined.

[0108] In step 102, a physical random access channel PRACH is sent on random access resources according to the target number of repeated transmissions.

[0109] In the embodiment of the present disclosure, the random access resource is a resource pre-allocated by a base station to a terminal and used by the terminal to perform random access.

[0110] In the above embodiment, corresponding target PRACH repetition transmission times can be determined for terminals with different polarization modes, effectively compensating for polarization loss for terminals with polarization loss and effectively reducing terminal power loss for terminals without polarization loss, thereby achieving high availability.

[0111] In some optional embodiments, reference Figure 2 As shown, Figure 2 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0112] In step 201, indication information broadcast by a base station via a system message is received.

[0113] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete an initial random access process based on a system message.

[0114] In step 202, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal is determined.

[0115] In step 203, PRACH is sent on random access resources according to the target number of repeated transmissions.

[0116] In the above embodiment, the base station can broadcast indication information via a system message. A terminal that needs to complete initial random access can read the indication information in the system message and, based on the indication information, determine a target number of repetitions. PRACH transmissions are then sent according to the target number of repetitions. This can determine the corresponding target number of PRACH repetitions for terminals with different polarization modes, effectively compensating for polarization loss for terminals with polarization loss and effectively reducing terminal power loss for terminals without polarization loss, resulting in high availability.

[0117] In some optional embodiments, reference Figure 3A As shown, Figure 3A This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0118] In step 301, indication information broadcasted by a base station through a system message is received, where the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type.

[0119] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete an initial random access process based on a system message.

[0120] In the disclosed embodiments, one or more alternative repetition transmission times corresponding to each terminal polarization type may be agreed upon by a protocol. Terminal polarization types include, but are not limited to, circular polarization, linear polarization, and both circular and linear polarization. Examples of the alternative repetition transmission times corresponding to terminal polarization types are shown in Table 1.

[0121] Table 1

[0122] Terminal polarization type Alternative retransmission times Circular polarization 1，2，3，…… Linear polarization 2，4，6，…… Both circular and linear polarization are supported 1

[0123] Circular polarization includes but is not limited to right-hand circularized polarization (RHCP) and left-hand circularized polarization (LHCP).

[0124] In an embodiment of the present disclosure, the base station may determine a repetition transmission number corresponding to each terminal polarization type according to Table 1. For example, the repetition transmission number corresponding to circular polarization is 1, the repetition transmission number corresponding to linear polarization is 2, and the repetition transmission number corresponding to both circular and linear polarizations is 1. The base station broadcasts the repetition transmission number corresponding to each terminal polarization type as indication information through a system message. The terminal may obtain the indication information by receiving the system message.

[0125] In step 302, based on the indication information, the number of repeated transmissions corresponding to the terminal polarization type adopted by the terminal is used as the target number of repeated transmissions.

[0126] In the embodiment of the present disclosure, assuming that the polarization mode adopted by the terminal is RHCP and the corresponding terminal polarization type is circular polarization, the terminal may use the number of repeated transmissions 1 corresponding to the circular polarization in the indication information as the target number of repeated transmissions.

[0127] In step 303, PRACH is sent on random access resources according to the target number of repeated transmissions.

[0128] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information in the system message. The target number of repeated transmissions of the PRACH can be determined for terminals with different polarization modes. The polarization loss is effectively compensated for terminals with polarization loss, and the terminal power loss is effectively reduced for terminals without polarization loss, thereby achieving high availability.

[0129] In some optional embodiments, reference Figure 3B As shown, Figure 3B This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0130] In step 301', indication information broadcast by a base station through a system message is received, where the indication information is used to indicate at least one of a downlink polarization mode and an uplink polarization mode.

[0131] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete an initial random access process based on a system message.

[0132] In the embodiments of the present disclosure, the downlink polarization mode refers to the polarization mode used by the base station when sending a downlink signal, and the uplink polarization mode refers to the polarization mode used when sending an uplink signal, which can be the polarization mode used by the terminal that the base station expects to send an uplink signal.

[0133] In step 302', a repetition transmission coefficient is determined based on the indicated uplink polarization mode and the polarization mode adopted by the terminal.

[0134] In one possible implementation, when the indication information is used to indicate at least an uplink polarization mode, if the uplink polarization mode indicated by the indication information is the same as the polarization mode used by the terminal, it is determined that the terminal has no polarization loss, and the repetition transmission factor can be determined to be 1, thereby avoiding terminal power consumption and terminal resource waste caused by multiple repeated transmissions of PRACH.

[0135] For example, if the uplink polarization mode is RHCP and the polarization mode adopted by the terminal is also RHCP, the repetition transmission coefficient is determined to be 1.

[0136] In another possible implementation, when the indication information is used to indicate at least an uplink polarization mode, if the uplink polarization mode indicated by the indication information is different from the polarization mode adopted by the terminal, it is determined that the terminal has a polarization loss, and the repetition transmission coefficient is determined to be 2, thereby compensating for the polarization loss by repeatedly transmitting the PRACH multiple times.

[0137] For example, if the uplink polarization mode is RHCP and the polarization mode used by the terminal is linear polarization, the repetition transmission coefficient is determined to be 2.

[0138] In another possible implementation, when the indication information is used only to indicate the downlink polarization mode, that is, the indication information only indicates the downlink polarization mode, the terminal may determine whether the uplink polarization mode indicated by the indication information is the same as the downlink polarization mode indicated by the indication information. Furthermore, the repetition transmission factor may be determined according to the above method based on whether the uplink polarization mode indicated by the indication information is the same as the polarization mode of the terminal.

[0139] For example, if the indication information indicates that the downlink polarization mode is LHCP, the terminal considers that the uplink polarization mode indicated by the indication information is also LHCP.

[0140] In step 303 ′, the product of the repetition transmission coefficient and the preset number of PRACH transmissions is used as the target number of repetition transmissions.

[0141] In the embodiment of the present disclosure, the preset number of transmissions of the PRACH may be agreed upon by a protocol or configured by a base station. Assuming that the preset number of transmissions of the PRACH is N, the terminal may use the product of the repetition transmission coefficient and N as the target number of repetition transmissions.

[0142] For example, if the repetition transmission coefficient is 2, the target number of repetition transmissions is 2N. If the repetition transmission coefficient is 1, the target number of repetition transmissions is N.

[0143] In a possible implementation, if the base station does not configure the preset number of transmissions, the terminal may default N to 1.

[0144] In step 304', PRACH is sent on random access resources according to the target number of repeated transmissions.

[0145] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information in the system message. This can effectively compensate for the polarization loss for terminals with polarization loss, and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0146] In some optional embodiments, reference Figure 4 As shown, Figure 4 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0147] In step 401, indication information sent by a base station via a physical downlink control channel PDCCH is received.

[0148] In the embodiment of the present disclosure, the random access process may also be triggered based on a Physical Downlink Control Channel (PDCCH) order. In this case, the terminal may receive indication information sent by the base station via the PDCCH.

[0149] In step 402, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal is determined.

[0150] In step 403, PRACH is sent on random access resources according to the target number of repeated transmissions.

[0151] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information in the PDCCH, which can effectively compensate for the polarization loss for terminals with polarization loss and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0152] In some optional embodiments, reference Figure 5A As shown, Figure 5A This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0153] In step 501, indication information sent by a base station through a PDCCH is received, where the indication information is carried in downlink control information DCI carried by the PDCCH, and is used to indicate the number of repeated transmissions.

[0154] In step 502, the target number of repeated transmissions is determined based on the value indicated by the designated information field in the DCI.

[0155] In a possible implementation, the designated information field may be a newly added information field in downlink control information (Downlink Control Information, DCI), and the information field is specifically used to indicate the number of repeated transmissions.

[0156] In another possible implementation, the designated information field may reuse an existing information field in the DCI. Alternatively, the information field corresponding to the preamble index may be reused.

[0157] The above description is merely an example. In actual applications, the specified information field may reuse other information fields in the DCI, and this disclosure does not limit this.

[0158] In the embodiment of the present disclosure, the base station indicates the number of repeated transmissions through the DCI display, and the terminal can determine the value indicated by the designated information field and directly use the value as the target number of repeated transmissions.

[0159] In step 503, PRACH is sent on random access resources according to the target number of repeated transmissions.

[0160] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information carried in the DCI of the PDCCH, which can effectively compensate for the polarization loss for terminals with polarization loss and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0161] In some optional embodiments, reference Figure 5B As shown, Figure 5B This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0162] In step 501', indication information sent by a base station through a PDCCH is received, where the indication information is carried in a DCI carried by the PDCCH, and is used to indicate a target preamble code.

[0163] In the embodiment of the present disclosure, the DCI carries indication information, and the indication information is a target preamble code indicated by the base station to the terminal.

[0164] In step 502, based on the preamble categories to which different preambles belong, the target preamble category to which the target preamble belongs is determined.

[0165] In one possible implementation, the terminal may determine the target preamble category to which the target preamble belongs based on the preamble categories to which different preambles belong. The base station may indicate the preamble categories to which different preambles belong through Radio Resource Control (RRC) signaling.

[0166] For example, the base station indicates through RRC signaling that preamble #1 to preamble #10 belong to the first type of preamble, preamble #11 to preamble #20 belong to the second type of preamble, and so on. If the target preamble carried in the DCI is preamble #1, then the target preamble type is the first type of preamble.

[0167] In step 503 ′, based on a predefined correspondence between preamble categories and repetition times, the repetition time corresponding to the target preamble category is used as the target repetition time.

[0168] In an embodiment of the present disclosure, the correspondence between the preamble code type and the number of repeated transmissions can be predefined by the protocol. For example, the number of repeated transmissions corresponding to the first type of preamble code is 1, the number of repeated transmissions corresponding to the second type of preamble code is 2, and so on. Assuming that the target preamble code type is the first type of preamble code, the target number of repeated transmissions is 1.

[0169] That is, the base station may implicitly indicate the number of repeated transmissions through the DCI, and the terminal determines the target number of repeated transmissions based on the above method.

[0170] In step 504', PRACH is sent on random access resources according to the target number of repeated transmissions.

[0171] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information carried in the DCI of the PDCCH, which can effectively compensate for the polarization loss for terminals with polarization loss and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0172] In some optional embodiments, reference Figure 5C As shown, Figure 5C This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0173] In step 501", indication information sent by the base station through the PDCCH is received, where the indication information is used to indicate that the target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates an initial random access.

[0174] In the embodiment of the present disclosure, when the terminal initiates the initial random access, the method for determining the number of repeated transmissions of PRACH is the same as that described above. Figure 3A or Figure 3B The base station can directly send indication information to the terminal via PDCCH, and inform the terminal through the indication information that the target number of repetition transmissions is the same as the number of repetition transmissions of PRACH when the terminal initiates initial random access.

[0175] For example, if the repetition transmission coefficient of the PRACH during initial random access is 2, then the target repetition transmission coefficient is 2.

[0176] In step 502", a PRACH is sent on random access resources according to the target number of repeated transmissions.

[0177] In the above embodiment, the terminal determines the target number of repeated transmissions of the PRACH through the indication information in the PDCCH, which can effectively compensate for the polarization loss for terminals with polarization loss and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0178] In some optional embodiments, reference Figure 6 As shown, Figure 6This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a terminal, which can be a terminal in an NTN. The method may include the following steps:

[0179] In step 601, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal is determined.

[0180] The method for determining the target number of repeated transmissions is similar to that provided in the above embodiment and will not be described again here.

[0181] In step 602, a preamble for random access is sent on an available random access opportunity RO in the random access resource according to the target number of repeated transmissions.

[0182] In a possible implementation, the preamble may be sent on an available RO in the frequency domain according to a target number of repeated transmissions.

[0183] For example Figure 7A As shown, assuming that the target number of repeated transmissions is 2, the PRACH configuration period is 1 frame 10 milliseconds, there is only one random access opportunity (RO) in each frame, and the terminal repeatedly transmits the same preamble code twice on different available ROs in the same subframe.

[0184] In another possible implementation, the preamble may be sent on an available RO in the time domain according to a target number of repeated transmissions.

[0185] For example Figure 7B As shown, assuming that the target number of repeated transmissions is 2, the PRACH configuration period is 1 frame 10 milliseconds, and there are four ROs in each frame, the terminal can transmit the same preamble code on two consecutive available ROs in a frame. The two consecutive available ROs can be consecutive subframes or discontinuous subframes, which is not limited in this disclosure.

[0186] In the above embodiment, the terminal determines the target number of repetitions for PRACH transmissions using indication information sent by the base station. Furthermore, the terminal sends a preamble to the base station on an available RO. This effectively compensates for polarization loss for terminals experiencing polarization loss and effectively reduces terminal power loss and avoids waste of terminal resources for terminals without polarization loss, resulting in high availability.

[0187] It should be noted that in the embodiment of the present disclosure, the target number of repeated transmissions is the number of times the terminal sends PRACH. If the target number of repeated transmissions is 1, the terminal actually only needs to send PRACH once. If the target number of repeated transmissions is greater than 1, the terminal needs to send PRACH multiple times.

[0188] In the embodiment of the present disclosure, the target number of repeated transmissions is determined to be 1 in the above manner, so that a terminal that does not incur polarization loss only needs to send PRACH to the base station once, thereby avoiding the terminal energy consumption loss and signaling resource waste caused by the situation where all terminals are configured to need to repeatedly send PRACH multiple times.

[0189] By using the above method to determine the target number of repeated transmissions to be greater than 1, a terminal that may suffer from polarization loss can effectively compensate for the polarization loss by repeatedly sending PRACH.

[0190] The present disclosure provides a channel transmission method, referring to Figure 8 As shown, Figure 8 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0191] In step 801, instruction information is sent to a terminal.

[0192] In the embodiment of the present disclosure, the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal.

[0193] In step 802, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0194] In the above-described embodiment, the base station may send indication information to the terminal so that the terminal determines the target number of repetition transmissions corresponding to the polarization mode used by the terminal, and receives the PRACH sent by the terminal according to the target number of repetition transmissions on the random access resource. The present disclosure can determine the corresponding target number of repetition transmissions of the PRACH for terminals with different polarization modes, effectively compensating for polarization loss for terminals with polarization loss, and effectively reducing terminal power loss for terminals without polarization loss, thereby achieving high availability.

[0195] In some optional embodiments, reference Figure 9 As shown, Figure 9 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0196] In step 901, indication information is broadcast via a system message.

[0197] In the embodiment of the present disclosure, the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal.

[0198] In step 902, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0199] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete an initial random access process based on a system message.

[0200] In the above embodiment, the base station can broadcast indication information via system messages so that terminals can determine a target number of repetitions based on this indication information. PRACH transmissions can then be sent according to the target number of repetitions. This can determine target numbers of PRACH repetitions for terminals with different polarization modes, effectively compensating for polarization loss for terminals with polarization loss and effectively reducing power loss for terminals without polarization loss, resulting in high availability.

[0201] In some optional embodiments, reference Figure 10A As shown, Figure 10A This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0202] In step 1001, indication information is broadcast via a system message, where the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type.

[0203] In the embodiment of the present disclosure, one or more candidate repetition transmission numbers corresponding to each terminal polarization type may be pre-agreed by a protocol, as shown in Table 1. Furthermore, the base station may determine a repetition transmission number corresponding to each terminal polarization type, and broadcast the repetition transmission number corresponding to each terminal polarization type as indication information through a system message.

[0204] In step 1002, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0205] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete the initial random access process based on the system message. The method in which the terminal determines the target number of repeated transmissions is the same as Figure 3A The method shown is similar and will not be repeated here.

[0206] In the above embodiment, indication information can be sent to the terminal through a system message, where the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type, so that the terminal can determine the target number of repeated transmissions of the corresponding PRACH based on the indication information, effectively compensating for the polarization loss for the terminal with polarization loss, and effectively reducing the terminal power loss for the terminal without polarization loss, thereby achieving high availability.

[0207] In some optional embodiments, reference Figure 10B As shown, Figure 10B This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0208] In step 1001', indication information is broadcast via a system message, where the indication information is used to indicate at least one of a downlink polarization mode and an uplink polarization mode.

[0209] In the embodiments of the present disclosure, the downlink polarization mode refers to the polarization mode used by the base station when sending a downlink signal, and the uplink polarization mode refers to the polarization mode used when sending an uplink signal, which can be the polarization mode used by the terminal that the base station expects to send an uplink signal.

[0210] In step 1002', a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on random access resources.

[0211] In the embodiment of the present disclosure, the terminal has not yet accessed the base station and needs to complete the initial random access process based on the system message. The method in which the terminal determines the target number of repeated transmissions is the same as Figure 3B The method shown is similar and will not be repeated here.

[0212] In the above embodiment, indication information can be sent to the terminal through a system message, where the indication information is used to indicate at least one of a downlink polarization mode and an uplink polarization mode, so that the terminal can determine the target number of repeated transmissions of the corresponding PRACH based on the indication information, effectively compensating for the polarization loss for the terminal with polarization loss, and effectively reducing the terminal power loss for the terminal without polarization loss, thereby achieving high availability.

[0213] In some optional embodiments, reference Figure 11 As shown, Figure 11 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0214] In step 1101, indication information is sent to the terminal via the physical downlink control channel PDCCH.

[0215] In the embodiment of the present disclosure, the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal.

[0216] In step 1102, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0217] In the above embodiment, in the random access process triggered by the PDCCH command, indication information can be sent to the terminal through the PDCCH, so that the terminal can determine the target number of repeated transmissions of the corresponding PRACH based on the indication information, effectively compensating for the polarization loss for the terminal with polarization loss, and effectively reducing the terminal power loss for the terminal without polarization loss, with high availability.

[0218] In some optional embodiments, reference Figure 12A As shown, Figure 12A This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0219] In step 1201, indication information is sent to the terminal via PDCCH, where the indication information is carried in DCI carried by the PDCCH, and the indication information is used to indicate the number of repeated transmissions, and the indication information is carried in a designated information field of the DCI.

[0220] In a possible implementation, the designated information field may be a newly added information field in the DCI, which is specifically used to indicate the number of repeated transmissions.

[0221] In another possible implementation, the designated information field may reuse an existing information field in the DCI. Alternatively, the information field corresponding to the preamble index may be reused.

[0222] In step 1202, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0223] The method for the terminal to determine the target number of repeated transmissions is the same as the above Figure 5A The method shown is similar and will not be repeated here.

[0224] In the above embodiment, the base station can allow the terminal to determine the target number of repeated transmissions by means of explicit DCI indication, thereby effectively compensating for the polarization loss of the terminal with polarization loss and effectively reducing the terminal power loss for the terminal without polarization loss, thereby achieving high availability.

[0225] In some optional embodiments, reference Figure 12B As shown, Figure 12B This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0226] In step 1201', indication information is sent to the terminal via the PDCCH, where the indication information is carried in the DCI carried by the PDCCH, and is used to indicate a target preamble code.

[0227] In step 1202', a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on random access resources.

[0228] In a possible implementation, the base station may also send RRC signaling to the terminal, where the RRC signaling is used to indicate the preamble category to which different preambles belong. The terminal determines the target number of repeated transmissions based on the RRC signaling and the target preamble in the DCI in the same manner as described above. Figure 5B The method shown is similar and will not be repeated here.

[0229] In the above embodiment, the base station can allow the terminal to determine the target number of repeated transmissions by implicitly indicating the DCI, effectively compensating for the polarization loss of the terminal with polarization loss, and effectively reducing the terminal power loss for the terminal without polarization loss, thereby achieving high availability. Figure 12C As shown, Figure 12C This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0230] In step 1201", indication information is sent to the terminal via the PDCCH, where the indication information is used to indicate that the target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates an initial random access.

[0231] In step 1202", a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions is received on a random access resource.

[0232] In the embodiment of the present disclosure, the terminal can use Figure 3A or Figure 3B The method shown in FIG4 determines the number of repeated transmissions of PRACH during the initial random access, and uses the number of repeated transmissions as the target number of repeated transmissions for sending PRACH during the random access process triggered by the PDCCH command. Figure 5C The method shown is similar and will not be repeated here.

[0233] In the above embodiment, the base station can use the indication information in the PDCCH to allow the terminal to determine the target number of repeated transmissions of the PRACH. This can effectively compensate for the polarization loss for terminals with polarization loss, and effectively reduce the terminal power loss and avoid terminal resource waste for terminals without polarization loss, thereby achieving high availability.

[0234] In some optional embodiments, reference Figure 13 As shown, Figure 13 This is a flow chart of a channel transmission method according to an embodiment, which can be applied to a base station, which can be a base station in an NTN. The method may include the following steps:

[0235] In step 1301, instruction information is sent to the terminal.

[0236] In the embodiment of the present disclosure, the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal.

[0237] In step 1302, a preamble code for random access sent by the terminal according to the target number of repeated transmissions is received on an available RO in random access resources.

[0238] The method for determining the available RO is the same as Figure 7A or Figure 7B The method shown is similar and will not be repeated here.

[0239] In the above embodiment, the base station sends indication information to the terminal, and the terminal determines the target number of repetitions for sending the PRACH based on the indication information. Furthermore, the base station receives the preamble code sent by the terminal to the base station on an available RO. This effectively compensates for polarization loss for terminals with polarization loss and effectively reduces terminal power loss and avoids waste of terminal resources for terminals without polarization loss, resulting in high availability.

[0240] Corresponding to the aforementioned embodiment of the method for realizing application functions, the present disclosure also provides an embodiment of an apparatus for realizing application functions.

[0241] Reference Figure 14 , Figure 14 This is a block diagram of a channel transmission device according to an exemplary embodiment. The device is applied to a terminal and includes:

[0242] The determination module 1401 is configured to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal based on the indication information sent by the base station;

[0243] The first sending module 1402 is configured to send a physical random access channel PRACH on a random access resource according to the target number of repeated transmissions.

[0244] Reference Figure 15 , Figure 15 This is a block diagram of a channel transmission device according to an exemplary embodiment. The device is applied to a base station and includes:

[0245] The second sending module 1501 is configured to send indication information to the terminal; wherein the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal;

[0246] The receiving module 1502 is configured to receive, on a random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions.

[0247] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to the partial description of the method embodiments. The device embodiments described above are merely illustrative, wherein the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art can understand and implement it without paying any creative work.

[0248] Correspondingly, the present disclosure also provides a computer-readable storage medium, which stores a computer program, and the computer program is used to execute any of the above-mentioned channel transmission methods for the terminal side.

[0249] Correspondingly, the present disclosure further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above-mentioned channel transmission methods for the base station side.

[0250] Accordingly, the present disclosure further provides a channel transmission device, comprising:

[0251] processor;

[0252] a memory for storing processor-executable instructions;

[0253] The processor is configured to execute any of the channel transmission methods described above on the terminal side.

[0254] Figure 16 1 is a block diagram of a channel transmission device 1600 according to an exemplary embodiment. For example, the device 1600 may be a mobile phone, tablet computer, e-book reader, multimedia player, wearable device, in-vehicle user equipment, iPad, smart TV, or other terminal.

[0255] Reference Figure 16, device 1600 may include one or more of the following components: a processing component 1602 , a memory 1604 , a power component 1606 , a multimedia component 1608 , an audio component 1610 , an input / output (I / O) interface 1612 , a sensor component 1616 , and a communication component 1618 .

[0256] The processing component 1602 generally controls the overall operation of the device 1600, such as operations associated with display, phone calls, random access to data, camera operation, and recording operations. The processing component 1602 may include one or more processors 1620 to execute instructions to complete all or part of the steps of the channel transmission method described above. In addition, the processing component 1602 may include one or more modules to facilitate interaction between the processing component 1602 and other components. For example, the processing component 1602 may include a multimedia module to facilitate interaction between the multimedia component 1608 and the processing component 1602. For another example, the processing component 1602 may read executable instructions from a memory to implement the steps of a channel transmission method provided in each of the above embodiments.

[0257] The memory 1604 is configured to store various types of data to support the operations of the device 1600. Examples of such data include instructions for any application or method operating on the device 1600, contact data, phone book data, messages, pictures, videos, etc. The memory 1604 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0258] The power supply component 1606 provides power to the various components of the device 1600. The power supply component 1606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 1600.

[0259] Multimedia component 1608 includes a display screen that provides an output interface between device 1600 and a user. In some embodiments, multimedia component 1608 includes a front-facing camera and / or a rear-facing camera. When device 1600 is in an operating mode, such as a capture mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each front-facing camera and the rear-facing camera can have a fixed optical lens system or have a variable focal length and optical zoom capability.

[0260] The audio component 1610 is configured to output and / or input audio signals. For example, the audio component 1610 includes a microphone (MIC) that is configured to receive external audio signals when the device 1600 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1604 or transmitted via the communication component 1618. In some embodiments, the audio component 1610 further includes a speaker for outputting audio signals.

[0261] I / O interface 1612 provides an interface between processing component 1602 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0262] Sensor assembly 1616 includes one or more sensors for providing various aspects of the status assessment of device 1600. For example, sensor assembly 1616 can detect the open / closed state of device 1600, the relative positioning of components, such as the display and keypad of device 1600. Sensor assembly 1616 can also detect changes in the position of device 1600 or a component of device 1600, the presence or absence of user contact with device 1600, the orientation or acceleration / deceleration of device 1600, and changes in the temperature of device 1600. Sensor assembly 1616 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1616 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1616 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0263] The communication component 1618 is configured to facilitate wired or wireless communication between the device 1600 and other devices. The device 1600 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1618 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1618 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0264] In an exemplary embodiment, the device 1600 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform any of the channel transmission methods described above on the terminal side.

[0265] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions is further provided, such as a memory 1004 including instructions. The instructions can be executed by the processor 1020 of the apparatus 1000 to implement the above-described channel transmission method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0266] Accordingly, the present disclosure further provides a channel transmission device, comprising:

[0267] processor;

[0268] a memory for storing processor-executable instructions;

[0269] The processor is configured to execute any of the channel transmission methods described above on the base station side.

[0270] like Figure 17 As shown, Figure 17 FIG1 is a schematic diagram showing a structure of a channel transmission device 1700 according to an exemplary embodiment. The device 1700 may be provided as a base station. Figure 17 The device 1700 includes a processing component 1722, a wireless transmission / reception component 1724, an antenna component 1726, and a signal processing part specific to the wireless interface. The processing component 1722 may further include at least one processor.

[0271] One of the processors in the processing component 1722 may be configured to execute any of the above-mentioned channel transmission methods.

[0272] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0273] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A channel transmission method, characterized in that: The method is applied to a terminal and includes: Determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal; Sending a physical random access channel PRACH on the random access resource according to the target number of repeated transmissions; The method further comprises: receiving the indication information broadcast by the base station through a system message, where the indication information is used to indicate any one of the following: A number of repetition transmissions corresponding to each terminal polarization type; At least one of a downlink polarization mode and an uplink polarization mode.

2. The method according to claim 1, characterized in that The determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes: When the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type, based on the indication information, the number of repeated transmissions corresponding to the terminal polarization type adopted by the terminal is used as the target number of repeated transmissions.

3. The method according to claim 1, characterized in that The determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes: When the indication information is used to indicate an uplink polarization mode, determining a repetition transmission coefficient based on the indicated uplink polarization mode and the polarization mode adopted by the terminal; The product of the repetition transmission coefficient and the preset number of transmissions of the PRACH is used as the target number of repetition transmissions.

4. The method according to claim 3, characterized in that The determining of the repetition transmission coefficient based on the indicated uplink polarization mode and the polarization mode adopted by the terminal includes: In response to determining that the indicated uplink polarization mode is the same as the polarization mode used by the terminal, determining the repetition transmission coefficient to be 1; In response to determining that the indicated uplink polarization mode is different from the polarization mode adopted by the terminal, determining the repetition transmission coefficient to be 2.

5. The method according to claim 3, characterized in that The method further comprises: In a case where the indication information is only used to indicate the downlink polarization mode, it is determined that the indicated uplink polarization mode is the same as the indicated downlink polarization mode.

6. The method according to claim 1, characterized in that The sending of the PRACH according to the target number of repeated transmissions on the random access resource includes: On an available random access opportunity RO in the random access resource, a preamble for random access is sent according to the target number of repeated transmissions.

7. A channel transmission method, characterized in that: The method is applied to a terminal and includes: Determining, based on the indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal; Sending a physical random access channel PRACH on the random access resource according to the target number of repeated transmissions; The method further comprises: receiving the indication information sent by the base station through a physical downlink control channel PDCCH, where the indication information is carried in downlink control information DCI carried by the PDCCH; The instruction information is used to indicate any of the following: Number of repeated transmissions; Target preamble; The target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

8. The method according to claim 7, characterized in that The determining, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes: When the indication information is used to indicate the number of repeated transmissions, the target number of repeated transmissions is determined based on a value indicated by a designated information field in the DCI.

9. The method according to claim 8, characterized in that The designated information field is an information field in the DCI used to indicate the number of repeated transmissions, or the designated information field is an information field corresponding to a multiplexed preamble code index.

10. The method according to claim 7, characterized in that The determining, based on the indication information, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal includes: When the indication information is used to indicate a target preamble, determining the target preamble category to which the target preamble belongs based on the preamble categories to which different preambles belong; Based on a predefined correspondence between preamble categories and repeated transmission times, the repeated transmission times corresponding to the target preamble category are used as the target repeated transmission times.

11. The method according to claim 10, characterized in that The method further comprises: Receive radio resource control RRC signaling sent by the base station; wherein the RRC signaling is used to indicate the preamble category to which different preambles belong.

12. The method according to claim 7, characterized in that The sending of the PRACH according to the target number of repeated transmissions on the random access resource includes: On an available random access opportunity RO in the random access resource, a preamble for random access is sent according to the target number of repeated transmissions.

13. A channel transmission method, characterized in that: The method is applied to a base station and includes: Sending instruction information to the terminal; wherein the instruction information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode used by the terminal; receiving, on random access resources, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions; The sending of instruction information to the terminal includes: The indication information is broadcasted via a system message, where the indication information is used to indicate any of the following: A number of repetition transmissions corresponding to each terminal polarization type; At least one of a downlink polarization mode and an uplink polarization mode.

14. The method according to claim 13, characterized in that The method further comprises: When the indication information is used to indicate a number of repeated transmissions corresponding to each terminal polarization type, the number of repeated transmissions corresponding to each terminal polarization type that needs to be sent to the terminal is determined from one or more alternative numbers of repeated transmissions corresponding to each terminal polarization type agreed upon in the protocol.

15. The method according to claim 14, characterized in that The receiving, on the random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions, includes: On an available RO in the random access resource, a preamble code for random access sent by the terminal according to the target number of repeated transmissions is received.

16. A channel transmission method, characterized in that: The method is applied to a base station and includes: Sending instruction information to the terminal; wherein the instruction information is used by the terminal to determine a target number of repeated transmissions corresponding to the polarization mode used by the terminal; receiving, on random access resources, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions; The sending of instruction information to the terminal includes: Sending the indication information to the terminal through a physical downlink control channel PDCCH, where the indication information is carried in downlink control information DCI carried by the PDCCH; The instruction information is used to indicate any of the following: Number of repeated transmissions; Target preamble; The target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

17. The method according to claim 16, characterized in that When the indication information is used to indicate the number of repeated transmissions, the indication information is carried in a designated information field of the DCI.

18. The method according to claim 17, characterized in that The designated information field is an information field in the DCI used to indicate the number of repeated transmissions, or the designated information field is an information field corresponding to a multiplexed preamble code index.

19. The method according to claim 16, wherein The method further comprises: When the indication information is used to indicate a target preamble code, radio resource control RRC signaling is sent to the terminal; wherein the RRC signaling is used to indicate the preamble code category to which different preamble codes belong.

20. The method according to claim 16, wherein The receiving, on the random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions, includes: On an available RO in the random access resource, a preamble code for random access sent by the terminal according to the target number of repeated transmissions is received.

21. A channel transmission device, characterized in that: The device is applied to a terminal and includes: a determination module configured to determine, based on indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal; A first sending module is configured to send a physical random access channel PRACH on a random access resource according to the target number of repeated transmissions; The apparatus is further configured to: receiving the indication information broadcast by the base station through a system message, where the indication information is used to indicate any one of the following: A number of repetition transmissions corresponding to each terminal polarization type; At least one of a downlink polarization mode and an uplink polarization mode.

22. A channel transmission device, characterized in that: The device is applied to a terminal and includes: a determination module configured to determine, based on indication information sent by the base station, a target number of repeated transmissions corresponding to the polarization mode adopted by the terminal; A first sending module is configured to send a physical random access channel PRACH on a random access resource according to the target number of repeated transmissions; The apparatus is further configured to: receiving the indication information sent by the base station through a physical downlink control channel PDCCH, where the indication information is carried in downlink control information DCI carried by the PDCCH; The instruction information is used to indicate any of the following: Number of repeated transmissions; Target preamble; The target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

23. A channel transmission device, characterized in that: The device is applied to a base station and includes: a second sending module configured to send indication information to a terminal; wherein the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to a polarization mode adopted by the terminal; a receiving module configured to receive, on a random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions; The second sending module is further configured to: The indication information is broadcasted via a system message, where the indication information is used to indicate any of the following: A number of repetition transmissions corresponding to each terminal polarization type; At least one of a downlink polarization mode and an uplink polarization mode.

24. A channel transmission device, characterized in that: The device is applied to a base station and includes: a second sending module configured to send indication information to a terminal; wherein the indication information is used by the terminal to determine a target number of repeated transmissions corresponding to a polarization mode adopted by the terminal; a receiving module configured to receive, on a random access resource, a physical random access channel PRACH sent by the terminal according to the target number of repeated transmissions; The second sending module is further configured to: Sending the indication information to the terminal through a physical downlink control channel PDCCH, where the indication information is carried in downlink control information DCI carried by the PDCCH; The instruction information is used to indicate any of the following: Number of repeated transmissions; Target preamble; The target number of repeated transmissions is the same as the number of repeated transmissions of the PRACH when the terminal initiates initial random access.

25. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to execute the channel transmission method according to any one of claims 1 to 12.

26. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to execute the channel transmission method according to any one of claims 13 to 20.

27. A channel transmission device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the channel transmission method according to any one of claims 1 to 12.

28. A channel transmission device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the channel transmission method according to any one of claims 13 to 20.

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