Communication method, apparatus, storage medium, and chip

Abstract

The present disclosure relates to a communication method, apparatus, storage medium and chip. The method comprises: a terminal device can send a first access message to a network device according to a first polarization parameter of the terminal device itself; the first access message can be used to instruct the network device to obtain the first polarization parameter of the terminal device according to the first access message. In this way, without adding a new field in the first access message, the terminal device can implicitly report the first polarization parameter to the network device, thereby improving the timeliness of reporting the first polarization parameter.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and more specifically, to a communication method, apparatus, storage medium, and chip. Background Technology

[0002] With the development of communication technology, wireless communication systems can be composed of heterogeneous networks of various standards. For example, such heterogeneous networks can include fourth-generation mobile networks (4G), fifth-generation mobile networks (5G), and non-terrestrial networks (NTN).

[0003] NTN can use satellite equipment to provide network services to terminals, such as geostationary orbit satellites, low Earth orbit satellites, highly elliptical orbit satellites, and high-altitude platform stations (HAPS). The antennas on NTN satellite equipment can be circularly polarized, while antennas in 5G and 4G networks can be linearly polarized. Terminal antennas can be either circularly or linearly polarized. When the polarization types of the terminal antenna and the base station antenna do not match, polarization loss occurs. In this case, the network equipment needs to obtain the terminal's antenna polarization parameters in a timely manner to compensate for this polarization loss through specific processing, thus avoiding communication quality degradation due to polarization mismatch.

[0004] However, in related technologies, the terminal cannot report the antenna polarization parameters to the network device in a timely manner. Summary of the Invention

[0005] To overcome the aforementioned problems in related technologies, this disclosure provides a communication method, apparatus, storage medium, and chip.

[0006] According to a first aspect of the present disclosure, a communication method is provided, applied to a terminal device, the method comprising:

[0007] Determine the first polarization parameter of the terminal device;

[0008] A first access message is sent to the network device according to the first polarization parameter; the first access message is used to instruct the network device to obtain the first polarization parameter according to the first access message.

[0009] According to a second aspect of the present disclosure, a method for use in a network device is provided, the method comprising:

[0010] Receive a first access message; the first access message is a message sent by the terminal device to the network device to request access to the network device based on the first polarization parameter of the terminal device;

[0011] Based on the first access message, the first polarization parameter of the terminal device is obtained.

[0012] According to a third aspect of the present disclosure, a communication device is provided for use in a terminal device, the device comprising:

[0013] The first parameter determination module is configured to determine the first polarization parameter of the terminal device;

[0014] The first message sending module is configured to send a first access message to the network device according to the first polarization parameter; the first access message is used to instruct the network device to obtain the first polarization parameter according to the first access message.

[0015] According to a fourth aspect of the present disclosure, a communication apparatus is provided for use in a network device, the apparatus comprising:

[0016] The first message receiving module is configured to receive a first access message; the first access message is a message sent by the terminal device to the network device to request access to the network device according to the first polarization parameter of the terminal device.

[0017] The first parameter acquisition module is configured to acquire the first polarization parameter of the terminal device based on the first access message.

[0018] According to a fifth aspect of the present disclosure, a terminal device is provided, comprising:

[0019] processor;

[0020] Memory used to store processor-executable instructions;

[0021] The processor is configured to perform the steps of the communication method provided in the first aspect of this disclosure.

[0022] According to a sixth aspect of the present disclosure, a network device is provided, comprising:

[0023] processor;

[0024] Memory used to store processor-executable instructions;

[0025] The processor is configured to perform the steps of the communication method provided in the second aspect of this disclosure.

[0026] According to a seventh aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the communication method provided in the first aspect of the present disclosure.

[0027] According to an eighth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the communication method provided in the second aspect of the present disclosure.

[0028] According to a ninth aspect of the present disclosure, a chip is provided, comprising: a processor and an interface; the processor is configured to read instructions to execute the steps of the communication method provided in the first aspect of the present disclosure.

[0029] According to a tenth aspect of the present disclosure, a chip is provided, comprising: a processor and an interface; the processor is configured to read instructions to execute the steps of the communication method provided in the second aspect of the present disclosure.

[0030] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: the terminal device can send a first access message to the network device according to its own first polarization parameters; the first access message can be used to instruct the network device to obtain the first polarization parameters of the terminal device according to the first access message. In this way, without adding new fields to the first access message, the terminal device can implicitly report the first polarization parameters to the network device, thereby improving the timeliness of the reporting of the first polarization parameters.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0033] Figure 1 This is a schematic diagram illustrating a communication system according to an exemplary embodiment.

[0034] Figure 2 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0035] Figure 3 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0036] Figure 4 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0037] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0038] Figure 6 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0039] Figure 7 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0040] Figure 8 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0041] Figure 9 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0042] Figure 10 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0043] Figure 11 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0044] Figure 12 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0045] Figure 13 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0046] Figure 14 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0047] Figure 15 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0048] Figure 16 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0049] Figure 17 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0050] Figure 18 This is a block diagram illustrating a communication device according to an exemplary embodiment. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0052] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0053] In this disclosure, terms such as "first" and "second" are used to distinguish similar objects and should not be construed as referring to a specific order or sequence. Furthermore, unless otherwise stated, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0054] In the description of this disclosure, unless otherwise stated, "and / or" is a term describing the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Furthermore, in the description of this disclosure, unless otherwise stated, "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0055] First, the application scenarios of this disclosure are described. This disclosure can be applied to wireless communication scenarios, especially wireless communication in networking scenarios where terminal devices and network devices have different antenna polarization types. Antenna polarization types can include linear polarization and circular polarization, which are described below:

[0056] Linear polarization: An electromagnetic wave in which the electric field vector has a fixed orientation in space is called linear polarization. Using the horizontal line of the ground as a reference, linear polarization can be further divided into two types: horizontal polarization and vertical polarization. Horizontal polarization refers to the electric field vector direction being parallel to the ground, while vertical polarization refers to the direction perpendicular to the ground.

[0057] Circular polarization: When the angle between the polarization plane of an electromagnetic wave and the normal plane of the earth changes periodically from 0° to 360°, meaning the magnitude of the electric field remains constant while its direction changes with time, and the trajectory of the end of the electric field vector projects as a circle on a plane perpendicular to the propagation direction, it is called circular polarization. Circular polarization refers to the electromagnetic wave radiated by an antenna propagating forward along a circular path around its propagation direction. Circular polarization includes right-hand circularly polarized (RHCP) or both left-hand circularly polarized (LHCP).

[0058] Figure 1 This is a schematic diagram of a communication system according to an exemplary embodiment. The communication system may include a first network device 101, a second network device 102, and a terminal device 103. The antenna polarization types of the first network device 101 and the second network device 102 may be different, and the antenna polarization type of the terminal device 103 may be circular polarization or linear polarization.

[0059] For example, the antenna polarization type of the first network device 101 is circular polarization, the antenna polarization type of the second network device 102 is linear polarization, and the antenna polarization type of the terminal device 103 can be linear polarization. When the terminal device 103 communicates with the second network device 102, the antenna polarization types of the terminal device and the second network device are consistent, and there is no polarization loss, so communication is normal. However, when the terminal device 103 communicates with the first network device 101, the antenna polarization types of the terminal device and the first network device are different, and polarization loss will occur. The terminal device can send UE Capability Information to the network device, reporting the antenna polarization parameters (e.g., the first polarization parameter) of the terminal device in the UE Capability Information. However, since the UE Capability Information can only be sent via RRC message after the terminal device and the network device establish an RRC (Radio Resource Control) connection, the terminal device cannot report the antenna polarization parameters in a timely manner, and the first network device cannot know the antenna polarization parameters of the terminal device, and therefore cannot perform specific processing (e.g., retransmission) to compensate for the polarization loss.

[0060] To address the aforementioned problems, this disclosure provides a communication method, apparatus, storage medium, and chip. A terminal device can send a first access message to a network device based on its own first polarization parameters. This first access message can instruct the network device to obtain the terminal device's first polarization parameters. This allows the terminal device to implicitly report its first polarization parameters to the network device, thereby improving the timeliness of the first polarization parameter reporting.

[0061] The present disclosure will now be described in conjunction with specific embodiments.

[0062] Figure 2 This is a communication method illustrated in an exemplary embodiment, which can be applied to terminal devices, including smartphones, smart wearable devices, smart speakers, smart tablets, PDAs (Personal Digital Assistants), CPEs (Customer Premise Equipment), etc. Figure 1 As shown, the method may include:

[0063] S201. Determine the first polarization parameter of the terminal device.

[0064] For example, the antenna polarization type of the terminal device can be obtained and the antenna planning type can be used as the first polarization parameter; alternatively, a specific parameter pre-set according to the antenna polarization type of the terminal device can be used as the first polarization parameter.

[0065] S202. Send a first access message to the network device according to the first polarization parameter.

[0066] The first access message can be used to instruct the network device to obtain the first polarization parameter of the terminal device according to the first access message.

[0067] It should be noted that the first access message can be used by a terminal device to request access to a network device, or it can instruct the network device to process the terminal's access request based on the first access message.

[0068] In some embodiments, the first access message may include a RA preamble (Random Access Preamble, also known as Msg1). This first access message can be sent via a PRACH (Physical Random Access Channel). The terminal device can determine the PRACH resource corresponding to the first access message based on the first polarization parameter; different first polarization parameters can correspond to different PRACH resources. Thus, the network device can also obtain the terminal device's first polarization parameter based on the received PRACH resource corresponding to the first access message.

[0069] In other embodiments, such as in a two-step random access (RACH) scenario, the first access message may include MsgA, which may also be referred to as a preamble.

[0070] Using the above method, the terminal device can send a first access message to the network device based on its own first polarization parameters. This first access message can instruct the network device to obtain the terminal device's first polarization parameters based on the first access message. In this way, without adding any new fields to the first access message, the terminal device can implicitly report its first polarization parameters to the network device, thereby improving the timeliness of the first polarization parameter reporting.

[0071] In some embodiments, the first polarization parameter described above can be used to characterize the antenna polarization type of the terminal device. This antenna polarization type can be the polarization capability or polarization mode of the antenna of the terminal device, and can include circular polarization and / or linear polarization. Further, the circular polarization type can include RHCP and / or LHCP, and the linear polarization type can include horizontal polarization and / or vertical polarization.

[0072] For example, when the antenna polarization type is linear polarization, the terminal device can determine the first PRACH resource corresponding to the linear polarization type and transmit the first access message through the first PRACH resource. The network device can obtain that the antenna polarization type of the terminal device is linear polarization based on the first PRACH resource that receives the first access message.

[0073] Similarly, when the antenna polarization type is circular polarization, the terminal device can determine the second PRACH resource corresponding to the circular polarization type and transmit the first access message through the second PRACH resource. The network device can obtain that the antenna polarization type of the terminal device is circular polarization based on the second PRACH resource that receives the first access message.

[0074] In this way, the terminal device can implicitly report the antenna polarization type through the PRACH resource used to transmit the first access message.

[0075] It should be noted that although this disclosure uses linear polarization and circular polarization as examples, this disclosure does not limit the antenna polarization type. For example, the antenna polarization type can also be other types besides the two polarization types mentioned above, such as elliptical polarization, or polarization at a certain angle in linear polarization other than horizontal polarization and vertical polarization.

[0076] Figure 3 This is a communication method illustrated in an exemplary embodiment, which can be applied to a terminal device. The method may include:

[0077] S301, Receive the undetermined access parameters corresponding to the undetermined polarization parameters sent by the network device.

[0078] The undetermined polarization parameter may include a first polarization parameter, and the undetermined access parameter may also include an undetermined access parameter corresponding to the first polarization parameter. There may be one or more undetermined polarization parameters.

[0079] S302, The undetermined access parameter corresponding to the first polarization parameter is taken as the first access parameter.

[0080] S303. Send a first access message to the network device according to the first access parameters.

[0081] The aforementioned access parameters (pending access parameters or first access parameters) can characterize the PRACH resources used to transmit the first access message. These PRACH resources may include one or more of the following resources: physical random access channel root sequence (prach-RootSequence), physical random access channel transmission opportunity (RO) resources (PRACH transmissionoccasion, also known as PRACH occasion, or simply RO resources), random access channel power resources, etc.

[0082] In some embodiments, different undetermined polarization parameters may correspond to different undetermined access parameters. For example, if the undetermined polarization parameter indicates that the antenna polarization type of the terminal device is linear polarization, then the undetermined access parameter corresponding to the linear polarization type may be a first undetermined access parameter, which indicates that the first access message can be transmitted using the first PRACH resource. Conversely, if the undetermined polarization parameter indicates that the antenna polarization type of the terminal device is circular polarization, then the undetermined access parameter corresponding to the circular polarization type may be a second undetermined access parameter, which indicates that the first access message can be transmitted using the second PRACH resource.

[0083] In this way, the terminal device can determine the first access parameter based on the pending access parameter received from the network device, and send the first access message to the network device based on the first access parameter; the network device also determines the first access parameter based on the first access message, and determines the first polarization parameter of the terminal device based on the first access parameter. Through the interaction between the network device and the terminal device, the compatibility between the network device and the terminal device can be improved.

[0084] In some embodiments, the pending access parameter includes one or more of the following parameters:

[0085] Parameter 1: The root sequence index of the physical random access channel corresponding to the undetermined polarization parameter, prach-RootSequenceIndex.

[0086] The undetermined prach-RootSequenceIndex represents the physical random access channel root sequence index used for transmitting the first access message.

[0087] Parameter 2, the undetermined polarization parameter corresponds to the undetermined physical random access channel general configuration rach-ConfigGeneric.

[0088] The undetermined `rach-ConfigGeneric` may include one or more parameters such as `msg1-FDM` (for message 1), `msg1-FrequencyStart` (frequency domain start position of message 1), and `preambleReceivedTargetPower` (preamble receive target power). `msg1-FDM` and `msg1-FrequencyStart` can represent the RO resources used to transmit the first access message. `preambleReceivedTargetPower` can represent the power resources used to transmit the first access message.

[0089] Parameter 3, the undetermined polarization parameter, corresponds to the undetermined synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

[0090] The pending SSB-SharedRO-MaskIndex can represent the shared RO resource used to send the first access message.

[0091] In this way, the PRACH resource for sending the first access message can be determined by the aforementioned pending access parameters, and the first access message can be sent through the PRACH resource, thereby implicitly reporting the first polarization parameters of the terminal device to the network device.

[0092] In some embodiments, the pending access parameter may be carried in a random access information field, which includes one or more of the following information fields:

[0093] Information field 1, Random Access Channel Common Configuration (RACH-ConfigCommon) information field.

[0094] Information field 2, Common Configuration Information for Two-Step Random Access Channel (RACH-ConfigCommonTwoStepRA) information field.

[0095] Information field 3, Random Access Channel Dedicated Configuration Information RACH-ConfigDedicated.

[0096] The aforementioned Information Element (IE) is an information field used for random access. By carrying the pending access parameter in the random access information field, the terminal can more easily obtain the pending access parameter.

[0097] It should be noted that the aforementioned pending access parameters can also be carried in other information domains, and this disclosure does not limit this.

[0098] The aforementioned pending access parameters can reuse existing parameter fields in the 3GPP protocol, or new parameter fields can be added to the 3GPP protocol. For example, two parameters, prach-RootSequenceIndex-A and prach-RootSequenceIndex-B, can be added to the RACH-ConfigCommon information field. prach-RootSequenceIndex-A can be used to represent the physical random access channel root sequence index corresponding to the linear polarization type, and prach-RootSequenceIndex-B can be used to represent the physical random access channel root sequence index corresponding to the circular polarization type.

[0099] In some embodiments, the terminal device can receive the aforementioned pending access parameters via a broadcast message, which may include a System Information Block (SIB) message. For example, the pending access parameters may be carried in an SIB message, and the terminal device can receive these pending access parameters via the SIB message. In this way, when the terminal device accesses the network device, it can determine the first access parameter corresponding to the first polarization parameter based on the most recently received pending access parameters, and send a first access message to the network device based on the first access parameter.

[0100] In other embodiments, the terminal device can receive the aforementioned pending access parameters via a UE (User Equipment) dedicated message, which may include an RRC message. For example, the pending access parameters may be carried in an RRC message. After the terminal device accesses the network device and establishes an RRC connection, it can receive the first access parameter via the RRC message. Then, after the RRC connection is released, when the terminal device accesses the network device again, it can determine the first access parameter corresponding to the first polarization parameter based on the most recently received pending access parameters, and send a first access message to the network device based on the first access parameter. The RRC message carrying the pending access parameters may be an RRC connection release (RRCRelease) message and / or an RRC reconfiguration (RRCReconfiguration) message.

[0101] Figure 4This is a communication method illustrated in an exemplary embodiment, which can be applied to a terminal device. The method may include:

[0102] S401. Determine the second access parameter corresponding to the first polarization parameter according to the first polarization access parameter correspondence pre-set in the terminal device.

[0103] S402. Send a first access message to the network device according to the second access parameter.

[0104] The first polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the first polarization access parameter correspondence is the same as the second polarization access parameter correspondence preset by the network device.

[0105] For example, the correspondence of the first polarization access parameters may include: the second access parameters corresponding to the linear polarization type; and the second access parameters corresponding to the circular polarization type.

[0106] In some embodiments, the second access parameter may characterize the PRACH resources used to transmit the first access message. The PRACH resources may also include one or more of the following resources: physical random access channel root sequence, physical random access channel transmission occasion (RO) resources, random access channel power resources, etc.

[0107] In this way, the terminal device and the network device are pre-set with the same polarization access parameter correspondence. The terminal device sends a first access message according to the second access parameter. The network device can obtain the second access parameter according to the first access message and obtain the first polarization parameter of the terminal device according to the second access parameter. The terminal device can implicitly report the first polarization parameter.

[0108] Figure 5 This is a communication method illustrated in an exemplary embodiment, which can be applied to a terminal device. The method may include:

[0109] S501, Send the first access message to the network device.

[0110] In this step, a first access message can be sent to the network device based on the first polarization parameter of the terminal device; alternatively, a general first access message can be sent directly to the network device without considering the first polarization parameter. This embodiment does not impose any restrictions on this.

[0111] S502, In response to receiving the second access message sent by the network device, determine the first number of transmissions by the terminal device to send the third access message;

[0112] S503. Based on the first number of transmissions, send a third access message to the network device.

[0113] For example, the first access message may include a RA preamble (Random Access preamble, also known as Msg1); the second access message may include a RAR (Random Access Response, also known as Msg2); and the third access message may include an RRC message (Radio Resource Control message, also known as Msg3), which may include an RRCSetupRequest (Radio Resource Control Setup Request).

[0114] The first transmission count can be used to characterize the number of times the terminal device continuously transmits the third access message.

[0115] It should be noted that continuous transmission can include initial transmission, repeated transmission, and retransmission. Retransmission can be performed in the event of initial transmission failure. For example, if a NACK corresponding to the initial transmission is received or an ACK corresponding to the initial transmission is not received within a preset time, it indicates that the initial transmission has failed and the initial transmission data can be retransmitted. Retransmission can use the same transmission parameters (e.g., modulation and coding scheme) as the initial transmission or different transmission parameters (e.g., modulation and coding scheme). Repeated transmission can be a simple repetition of the initial transmission. For example, regardless of whether the initial transmission is successful or not, the initial transmission data is retransmitted. The same transmission parameters as the initial transmission can be used.

[0116] The aforementioned first transmission count can represent the number of times the third access message is repeatedly transmitted, the number of times the third access message is retransmitted, or the total number of times the third access message is repeatedly transmitted and retransmitted.

[0117] It should also be noted that the first transmission count may include the initial transmission count or may not include the initial transmission count. For example, if the first transmission count represents the number of repeated transmissions, the first transmission count of 3 times can represent 1 initial transmission + 3 repeated transmissions; it can also represent 1 initial transmission + 2 repeated transmissions. This disclosure does not limit it in this way.

[0118] In this way, the terminal device can repeatedly transmit or retransmit the third access message based on the first transmission count, thereby improving the transmission reliability of the third access message and increasing the access success rate.

[0119] In some embodiments, the method for determining the first number of transmissions of the third access message by the terminal device in step S502 above may include one or more of the following:

[0120] Method 1: Use the preset number of transmissions as the first number of transmissions.

[0121] For example, the preset number of transmissions can be a parameter preset by the terminal device. The preset number of transmissions can be any value greater than or equal to 1, such as 3 or 5.

[0122] Method 2: Obtain the pending transmission parameters from the second access message; and determine the first transmission count based on the pending transmission parameters.

[0123] The pending transmission parameter can be one or more parameters. For example, the pending transmission parameter may include a first transmission parameter and / or a second transmission parameter.

[0124] In some embodiments, the second access message may include downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter including the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter including the redundancy version (RV) in the DCI.

[0125] It should be noted that since the DCI message in the second access message (Msg2) is used to indicate the transmission resources of the third access message (Msg3), according to the current 3GPP protocol, the HARQ-Process-Number used for Msg3 transmission can be fixed at 0. Therefore, the HARQ-Process-Number in the second access message (Msg2) is currently unused and can be reused as a pending transmission parameter. Similarly, according to the current 3GPP protocol, the RV in the DCI is also fixed at 0. Therefore, the RV in the second access message (Msg2) is also currently unused and can also be reused as a pending transmission parameter.

[0126] In some embodiments, the terminal device may determine the first number of transmissions based on the second transmission parameter if the first transmission parameter is a first preset parameter value.

[0127] The first preset value can be any preset value, for example, it can be a preset value where all bits are 1 or a preset value where all bits are 0.

[0128] For example, the terminal device can determine the first transmission count based on RV when all bits of HARQ-Process-Number are 1, for example, by using the value of RV as the first transmission count.

[0129] In other embodiments, the terminal device may determine the first number of transmissions based on the first transmission parameter when the second transmission parameter is a second preset parameter value.

[0130] Similarly, the second preset value can be any preset value, for example, it can be a preset value where all bits are 1 or a preset value where all bits are 0.

[0131] For example, the terminal device can determine the first transmission count based on HARQ-Process-Number when all bits of RV are 1, for example, by using the value of HARQ-Process-Number as the first transmission count.

[0132] In other embodiments, when the terminal device receives a first access parameter sent by the network device, or receives a first indication message sent by the network device, it determines a first number of transmissions based on the first parameter and / or the second parameter.

[0133] The first instruction message is used to enable the downlink control information format DCI 0-0 to control the number of dynamic retransmissions.

[0134] For example, the value of the first parameter (e.g., HARQ-Process-Number) can be used as the first transmission count, or the value of the second parameter (e.g., RV) can be used as the first transmission count.

[0135] In some embodiments, determining the first number of transmissions based on the undetermined transmission parameter may include using the value of the undetermined transmission parameter as the first number of transmissions.

[0136] For example, if the pending transmission parameter includes HARQ-Process-Number, the value of HARQ-Process-Number can be used as the first transmission count; if the pending transmission parameter includes RV, the value of RV can be used as the first transmission count.

[0137] In other embodiments, the method of determining the first number of transmissions based on the undetermined transmission parameter may include: determining the first number of transmissions corresponding to the undetermined transmission parameter based on the correspondence between target transmission parameters.

[0138] This method may include the following steps:

[0139] First, determine the correspondence between the target transmission parameters.

[0140] The target transmission parameter correspondence includes the correspondence between the undetermined transmission parameters and the first transmission count.

[0141] For example, a first pending transmission parameter correspondence can be received from a network device; this first pending transmission parameter correspondence can be used as the target transmission parameter correspondence. Here, the first pending transmission parameter correspondence is the correspondence between the pending transmission parameters determined by the network device and the first number of transmissions.

[0142] For example, the second pending transmission parameter correspondence preset by the terminal device can be used as the target transmission parameter correspondence; the second pending transmission parameter correspondence is the same as the third pending transmission parameter correspondence preset by the network device. The second pending transmission parameter is the correspondence between the pending transmission parameters determined by the terminal device and the first number of transmissions; the third pending transmission parameter is the correspondence between the pending transmission parameters determined by the network device and the first number of transmissions.

[0143] In this way, network devices and terminal devices use the same correspondence of pending transmission parameters to determine the same number of first transmissions, thus achieving compatibility between network devices and terminal devices.

[0144] Then, based on the correspondence of the target transmission parameters, the first transmission count corresponding to the undetermined transmission parameters is obtained.

[0145] For example, taking the undetermined transmission parameter RV as an example, the value of RV can be any value from 0 to 3. The correspondence of this target transmission parameter can include the first transmission count corresponding to RV value 0 being 1, the first transmission count corresponding to RV value 1 being 4, the first transmission count corresponding to RV value 2 being 8, and the first transmission count corresponding to RV value 3 being 16. In this way, the first transmission count can be determined based on the value of the undetermined transmission parameter (RV).

[0146] It should be noted that the above values ​​are examples, and different correspondences can be set according to actual needs. This disclosure does not limit this.

[0147] The terminal device can determine the first number of transmissions based on the correspondence between the pending transmission parameters and the target transmission parameters, so as to transmit the third access message according to the first number of transmissions and improve the transmission reliability of the third access message.

[0148] Figure 6 This is a communication method illustrated according to an exemplary embodiment, which can be applied to a network device. The method may include:

[0149] S601, Receive the first access message sent by the terminal device.

[0150] The first access message is a message sent by the terminal device to the network device to request access to the network device based on the terminal device's first polarization parameters.

[0151] It should be noted that the first access message can be used by a terminal device to request access to a network device, or it can instruct the network device to process the terminal's access request based on the first access message.

[0152] S602. Based on the first access message, obtain the first polarization parameter of the terminal device.

[0153] In some embodiments, the first access message may include a RA preamble (Random Access Preamble, also known as Msg1). This first access message can be sent via a PRACH (Physical Random Access Channel). The terminal device can determine the PRACH resource corresponding to the first access message based on the first polarization parameter; different first polarization parameters can correspond to different PRACH resources. Thus, the network device can also obtain the terminal device's first polarization parameter based on the received PRACH resource corresponding to the first access message.

[0154] In other embodiments, such as in a two-step random access (RACH) scenario, the first access message may include MsgA, which may also be referred to as a preamble.

[0155] Using the above method, the network device can receive the first access message sent by the terminal device and obtain the first polarization parameter of the terminal device based on the first access message, thereby implicitly obtaining the first polarization parameter and improving the timeliness of the network device in obtaining the first polarization parameter.

[0156] In some embodiments, the first polarization parameter described above can be used to characterize the antenna polarization type of the terminal device. This antenna polarization type can be the polarization capability or polarization mode of the antenna of the terminal device, and can include circular polarization and / or linear polarization. Further, the circular polarization type can include RHCP and / or LHCP, and the linear polarization type can include horizontal polarization and / or vertical polarization.

[0157] For example,

[0158] When the antenna polarization type is linear polarization, the terminal device can determine the first PRACH resource corresponding to the linear polarization type and transmit the first access message through the first PRACH resource. The network device can obtain that the antenna polarization type of the terminal device is linear polarization based on the first PRACH resource received from the first access message.

[0159] Similarly, when the antenna polarization type is circular polarization, the terminal device can determine the second PRACH resource corresponding to the circular polarization type and transmit the first access message through the second PRACH resource. The network device can obtain that the antenna polarization type of the terminal device is circular polarization based on the second PRACH resource that receives the first access message.

[0160] In this way, network devices can implicitly obtain the antenna polarization type of terminal devices based on the PRACH resources used to transmit the first access message.

[0161] It should also be noted that although this disclosure uses linear polarization and circular polarization as examples, this disclosure does not limit the antenna polarization type. For example, the antenna polarization type can also be other types besides the two polarization types mentioned above, such as elliptical polarization, or polarization at a certain angle in linear polarization other than horizontal polarization and vertical polarization.

[0162] Figure 7 This is a communication method illustrated according to an exemplary embodiment, which can be applied to a network device. The method may include:

[0163] S701. Determine the undetermined access parameters corresponding to the undetermined polarization parameters.

[0164] The undetermined polarization parameter may include a first polarization parameter, and the undetermined access parameter may also include an undetermined access parameter corresponding to the first polarization parameter. There may be one or more undetermined polarization parameters.

[0165] For example, the undetermined access parameters corresponding to the undetermined polarization parameters can be determined based on the preset parameters of the network device, such as the first access parameters corresponding to the first polarization parameters.

[0166] The aforementioned access parameters (pending access parameters or first access parameters) can characterize the PRACH resources used to transmit the first access message. These PRACH resources may include one or more of the following resources: physical random access channel root sequence (prach-RootSequence), physical random access channel transmission opportunity (RO) resources (PRACH transmissionoccasion, also known as PRACH occasion, or simply RO resources), random access channel power resources, etc.

[0167] The aforementioned undetermined polarization parameters can be used to characterize the antenna polarization type, which can be the polarization capability or polarization method of the terminal device's antenna. The antenna polarization type can include circular polarization and / or linear polarization. Further, the circular polarization type can include RHCP and / or LHCP, and the linear polarization type can include horizontal polarization and / or vertical polarization. The aforementioned preset parameters can include the correspondence between undetermined polarization parameters and undetermined access parameters. For example, a first undetermined access parameter corresponding to a linear polarization type, and a second undetermined access parameter corresponding to a circular polarization type. The first undetermined access parameter can indicate that a first access message can be transmitted using a first PRACH resource, and the second undetermined access parameter can indicate that the first access message can be transmitted using a second PRACH resource.

[0168] S702, Send the pending access parameters to the terminal device.

[0169] The pending access parameter can be used to instruct the terminal device to obtain the first access parameter corresponding to the first polarization parameter, and send the first access message to the network device according to the first access parameter.

[0170] In some embodiments, the network device can send the pending access parameters via a broadcast message, which may include a System Information Block (SIB) message. For example, the pending access parameters can be carried in an SIB message. The network device can send the pending access parameters via the SIB message, and the terminal device can receive the pending access parameters via the SIB message. Thus, when the terminal device accesses the network device, it can determine a first access parameter based on the most recently received pending access parameters and send a first access message to the network device based on the first access parameter.

[0171] In other embodiments, the network device can send the aforementioned pending access parameters via a UE (User Equipment) dedicated message, which may include an RRC message. For example, the first access parameter can be carried in an RRC message. After the terminal device accesses the network device and establishes an RRC connection, the network device can send the pending access parameter via an RRC message. The terminal device can receive the pending access parameter via an RRC message. Then, after the RRC connection is released, when the terminal device accesses the network device again, it can determine the first access parameter based on the most recently received pending access parameter and send a first access message to the network device based on the first access parameter. The RRC message carrying the pending access parameter can be an RRC connection release (RRCRelease) message and / or an RRC reconfiguration (RRCReconfiguration) message.

[0172] S703, Receive the first access message sent by the terminal device.

[0173] S704. Determine the first access parameters corresponding to the first access message.

[0174] For example, the first access parameter can be determined based on the PRACH resource that transmits the first access message.

[0175] S705. Based on the first access parameter, determine the first polarization parameter of the terminal device.

[0176] For example, based on the correspondence between the undetermined polarization parameter and the undetermined access parameter, the undetermined polarization parameter corresponding to the first access parameter can be determined, and the undetermined polarization parameter can be used as the first polarization parameter of the terminal device.

[0177] In this way, the terminal device sends a first access message to the network device based on the first access parameters received from the network device; the network device also determines the first access parameters based on the first access message, and determines the first polarization parameters obtained by the terminal device based on the first access parameters. Through the interaction between the network device and the terminal device, the compatibility between the network device and the terminal device can be improved.

[0178] In some embodiments, different undetermined polarization parameters may correspond to different undetermined access parameters. For example, if the undetermined polarization parameter indicates that the antenna polarization type of the terminal device is linear polarization, then the first access parameter corresponding to the linear polarization type may be a first undetermined access parameter, which may indicate that the first access message can be transmitted using the first PRACH resource. Conversely, if the undetermined polarization parameter indicates that the antenna polarization type of the terminal device is circular polarization, then the undetermined access parameter corresponding to the circular polarization type may be a second undetermined access parameter, which may indicate that the first access message is transmitted using the second PRACH resource.

[0179] In some embodiments, the pending access parameter includes one or more of the following parameters:

[0180] Parameter 1: The root sequence index of the physical random access channel corresponding to the undetermined polarization parameter, prach-RootSequenceIndex.

[0181] Parameter 2, the undetermined polarization parameter corresponds to the undetermined physical random access channel general configuration rach-ConfigGeneric.

[0182] Parameter 3, the undetermined polarization parameter, corresponds to the undetermined synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

[0183] In some embodiments, the pending access parameter may be carried in a random access information field, which includes one or more of the following information fields:

[0184] Information field 1, Random Access Channel Common Configuration (RACH-ConfigCommon) information field.

[0185] Information field 2, Common Configuration Information for Two-Step Random Access Channel (RACH-ConfigCommonTwoStepRA) information field.

[0186] Information field 3, Random Access Channel Dedicated Configuration Information RACH-ConfigDedicated.

[0187] It should be noted that the specific descriptions of the above-mentioned pending access parameters and random access information fields can be found in the descriptions in the above embodiments, and will not be repeated here.

[0188] In some embodiments, the first polarization parameter of the terminal device can be obtained by the above step S602 in the following manner:

[0189] First, determine the second access parameters corresponding to the first access message.

[0190] Secondly, based on the pre-set second polarization access parameter correspondence of the network device, the first polarization parameter corresponding to the second access parameter is obtained.

[0191] The second polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the second polarization access parameter correspondence is the same as the first polarization access parameter correspondence preset by the terminal device.

[0192] For example, the correspondence of the second polarization access parameters may include: the second access parameters corresponding to the linear polarization type; and the second access parameters corresponding to the circular polarization type.

[0193] In some embodiments, the second access parameter may characterize the PRACH resources used to transmit the first access message. The PRACH resources may also include one or more of the following resources: physical random access channel root sequence, physical random access channel transmission occasion (RO) resources, random access channel power resources, etc.

[0194] In this way, the terminal device and the network device are pre-set with the same polarization access parameter correspondence. The terminal device sends a first access message according to the second access parameter. The network device can obtain the second access parameter according to the first access message and obtain the first polarization parameter of the terminal device according to the second access parameter. The network device can implicitly obtain the first polarization parameter of the terminal device.

[0195] Figure 8 This is a communication method illustrated according to an exemplary embodiment, which can be applied to a network device. The method may include:

[0196] S801, Receive the first access message sent by the terminal device.

[0197] In this step, the first access message may be a first access message sent by the terminal device to the network device according to the first polarization parameter; or the terminal device may send a general first access message directly to the network device without considering the first polarization parameter. This embodiment does not limit this.

[0198] S802, Send a second access message to the terminal device.

[0199] The second access message is used to instruct the terminal device to determine the first number of transmissions to send the third access message, and to send the third access message to the network device according to the first number of transmissions.

[0200] In some exemplary embodiments, the first access message may include a RA preamble (Random Access preamble, also known as Msg1); the second access message may include a RAR (Random Access Response, also known as Msg2); and the third access message may include an RRC message (Radio Resource Control message, also known as Msg3), which may include an RRC Setup Request (Radio Resource Control Setup Request).

[0201] The first transmission count can be used to characterize the number of times the terminal device continuously transmits the third access message. For example, the first transmission count can be the number of times the third access message is repeatedly transmitted, the number of times the third access message is retransmitted, or the total number of times the third access message is repeatedly transmitted and retransmitted.

[0202] It should also be noted that the first transmission count may include the initial transmission count or may not include the initial transmission count. For example, if the first transmission count represents the number of repeated transmissions, the first transmission count of 3 times can represent 1 initial transmission + 3 repeated transmissions; it can also represent 1 initial transmission + 2 repeated transmissions. This disclosure does not limit it in this way.

[0203] In this way, the network device can instruct the terminal device to repeatedly transmit or retransmit the third access message based on the first transmission count, thereby improving the transmission reliability of the third access message and increasing the access success rate.

[0204] In some embodiments, step S802 above may include: firstly determining a first number of transmissions based on a first polarization parameter and a second polarization parameter of the network device; then, determining the undetermined transmission parameters in the second access message based on the first number of transmissions, and sending the second access message to the terminal device.

[0205] For example, when the first polarization parameter and the second polarization parameter are different, a first preset number of transmissions can be used as the first number of transmissions; when the first polarization parameter and the second polarization parameter are the same, a second preset number of transmissions can be used as the first number of transmissions. The first preset number of transmissions can be greater than or equal to the second preset number of transmissions. In this way, when the polarization parameters of the terminal device and the network device are different, the transmission reliability of the third access message can be improved by using more transmissions.

[0206] The second access message includes the aforementioned pending transmission parameters. These pending transmission parameters can be one or more parameters; for example, they may include a first transmission parameter and / or a second transmission parameter.

[0207] In some embodiments, the second access message may include downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter including the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter including the redundancy version (RV) in the DCI.

[0208] In some embodiments, the network device may use a first preset parameter value as a first transmission parameter and determine a second transmission parameter based on a first number of transmissions.

[0209] The first preset value can be any preset value, for example, it can be a preset value where all bits are 1 or a preset value where all bits are 0.

[0210] For example, the terminal device can determine the first transmission count based on RV when all bits of HARQ-Process-Number are 1, for example, by using the value of RV as the first transmission count.

[0211] In other embodiments, the network device may use a second preset parameter value as a second transmission parameter and determine the first transmission parameter based on the first number of transmissions.

[0212] Similarly, the second preset value can be any preset value, for example, it can be a preset value where all bits are 1 or a preset value where all bits are 0.

[0213] For example, the terminal device can determine the first transmission count based on HARQ-Process-Number when all bits of RV are 1, for example, by using the value of HARQ-Process-Number as the first transmission count.

[0214] In other embodiments, the network device may determine the first parameter and / or the second parameter based on the first number of transmissions, provided that a first access parameter or a first indication message is sent to the terminal device. The first indication message enables the downlink control information format DCI0-0 to control the dynamic retransmission count.

[0215] For example, the first number of transmissions can be used as the value of the first parameter (e.g., HARQ-Process-Number), or the first number of transmissions can be used as the value of the second parameter (e.g., RV).

[0216] In some embodiments, determining the pending transmission parameters in the second access message based on the first transmission count may include using the first transmission count as the pending transmission parameter.

[0217] For example, if the pending transmission parameter includes HARQ-Process-Number, the first transmission count can be used as the value of HARQ-Process-Number; if the pending transmission parameter includes RV, the first transmission count can be used as the value of RV.

[0218] In other embodiments, the method of determining the pending transmission parameters in the second access message based on the first transmission count may include: obtaining the pending transmission parameters corresponding to the first transmission count according to a third pending transmission parameter correspondence pre-set by the network device.

[0219] The third undetermined transmission parameter correspondence includes the correspondence between the undetermined transmission parameters and the first transmission count.

[0220] For example, taking the undetermined transmission parameter RV as an example, the value of RV can be any value from 0 to 3. The correspondence of this third undetermined transmission parameter can include the first transmission count corresponding to RV value 0 being 1, the first transmission count corresponding to RV value 1 being 4, the first transmission count corresponding to RV value 2 being 8, and the first transmission count corresponding to RV value 3 being 16. In this way, the value of the undetermined transmission parameter (RV) can be determined based on the first transmission count.

[0221] It should be noted that the above values ​​are examples, and different correspondences can be set according to actual needs. This disclosure does not limit this.

[0222] In some embodiments, the third pending transmission parameter correspondence may be the same as the second pending transmission parameter correspondence preset by the terminal device. The second pending transmission parameter is the correspondence between the pending transmission parameters determined by the terminal device and the first transmission count.

[0223] In other embodiments, the third pending transmission parameter correspondence can be used as the first pending transmission parameter correspondence; the first pending transmission parameter correspondence is sent to the terminal device; the first pending transmission parameter correspondence is used to instruct the terminal device to obtain the target transmission parameter correspondence based on the first pending transmission parameter correspondence.

[0224] In this way, network devices and terminal devices use the same correspondence of pending transmission parameters to determine the same number of first transmissions, thus achieving compatibility between network devices and terminal devices.

[0225] Figure 9 This is a communication method illustrated according to an exemplary embodiment, the method may include:

[0226] S901, The terminal device sends the first access message to the network device.

[0227] In some embodiments, a first access message may be sent to a network device based on a first polarization parameter of the terminal device; the first access message is used for the terminal device to request access to the network device, and for the network device to obtain the first polarization parameter based on the first access message.

[0228] For example, a terminal device can receive undetermined access parameters corresponding to undetermined polarization parameters sent by a network device, use the undetermined access parameters corresponding to the terminal device's first polarization parameters as first access parameters, and send a first access message to the network device based on the first access parameters.

[0229] For example, the terminal device can determine the second access parameter corresponding to the first polarization parameter based on the pre-set correspondence of the first polarization access parameters; and send the first access message to the network device based on the second access parameter.

[0230] The aforementioned access parameters (e.g., pending access parameters, first access parameters, or second access parameters) can all characterize the PRACH resources used to transmit the first access message.

[0231] For example, the above access parameters (e.g., pending access parameters, first access parameters, or second access parameters) may include one or more of the following parameters:

[0232] Parameter 1, the physical random access channel root sequence index prach-RootSequenceIndex corresponding to the polarization parameter.

[0233] Parameter 2, the general configuration of the physical random access channel corresponding to the polarization parameter, is `rach-ConfigGeneric`.

[0234] Parameter 3, the synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex corresponding to the polarization parameter.

[0235] In this way, the PRACH resource for sending the first access message can be determined by the above access parameters (e.g., pending access parameters, first access parameters, or second access parameters), and the first access message can be sent through the PRACH resource, thereby implicitly reporting the first polarization parameters of the terminal device to the network device.

[0236] In other embodiments, the terminal device may also send a general first access message directly to the network device without considering the first polarization parameter.

[0237] S902. Upon receiving the first access message, the network device sends a second access message to the terminal device.

[0238] S903. Upon receiving the second access message, the terminal device sends a third access message to the network device.

[0239] In some embodiments, the second access message may be used to instruct the terminal device network device to send a third access message.

[0240] In other embodiments, the second access message may be used to instruct the terminal device to determine a first number of transmissions to send the third access message, and to send the third access message to the network device according to the first number of transmissions.

[0241] The first transmission count can be used to characterize the number of times the terminal device continuously transmits the third access message. For example, the first transmission count can be the number of times the third access message is repeatedly transmitted, the number of times the third access message is retransmitted, or the total number of times the third access message is repeatedly transmitted and retransmitted.

[0242] In this way, the network device can instruct the terminal device to repeatedly transmit or retransmit the third access message based on the first transmission count, thereby improving the transmission reliability of the third access message and increasing the access success rate.

[0243] In some embodiments, the network device may first determine the first number of transmissions based on the first polarization parameter and the second polarization parameter of the network device; then, it may determine the pending transmission parameters in the second access message based on the first number of transmissions and send the second access message to the terminal device.

[0244] The second access message includes the aforementioned pending transmission parameters. These pending transmission parameters can be one or more parameters; for example, they may include a first transmission parameter and / or a second transmission parameter.

[0245] In some embodiments, the second access message may include downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter including the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter including the redundancy version (RV) in the DCI.

[0246] In some embodiments, the first access message may include a RA preamble (Random Access preamble, also known as Msg1); the second access message may include a RAR (Random Access Response, also known as Msg2); and the third access message may include an RRC message (Radio Resource Control message, also known as Msg3), which may include an RRC Setup Request (Radio Resource Control Setup Request).

[0247] In other embodiments, such as in a two-step random access (RACH) scenario, the first access message may include MsgA, which can also be called a preamble, and the second access message may include MsgB. In this case, step S903 can be skipped, and the terminal device can access the network device through the first and second access messages.

[0248] In this way, the network device can instruct the terminal device to repeatedly transmit or retransmit the third access message based on the first transmission count, thereby improving the transmission reliability of the third access message and increasing the access success rate.

[0249] Figure 10 This is a communication method illustrated according to an exemplary embodiment, the method may include:

[0250] S1001, The network device determines the undetermined access parameters corresponding to the undetermined polarization parameters.

[0251] The undetermined polarization parameter may include a first polarization parameter, and the undetermined access parameter may also include the undetermined access parameter corresponding to the first polarization parameter. There may be one or more undetermined polarization parameters.

[0252] For example, the pending access parameters corresponding to the pending polarization parameters can be determined based on the preset parameters of the network device. For instance, the first access parameters corresponding to the first polarization parameters. These access parameters (pending access parameters or first access parameters) can characterize the PRACH resources used to transmit the first access message. These PRACH resources may include one or more of the following resources: physical random access channel root sequence (prach-RootSequence), physical random access channel transmission opportunity (RO) resources (PRACH transmission occasion, also known as PRACH occasion, or simply RO resources), random access channel power resources, etc.

[0253] S1002. The network device sends the pending access parameters to the terminal device.

[0254] The pending access parameter can be used to instruct the terminal device to obtain the first access parameter corresponding to the first polarization parameter, and send the first access message to the network device according to the first access parameter.

[0255] S1003. The terminal device obtains the first access parameter based on the undetermined access parameter corresponding to the first polarization parameter.

[0256] For example, the terminal device may use the pending access parameter corresponding to the first polarization parameter as the first access parameter.

[0257] S1004. The terminal device sends a first access message to the network device based on the first access parameter and the terminal device's first polarization parameter.

[0258] S1005. The network device receives a first access message sent by the terminal device, determines the first access parameter corresponding to the first access message, and determines the first polarization parameter of the terminal device based on the first access parameter.

[0259] S1006. The network device determines the first number of transmissions for the terminal device to send the third access message based on the first polarization parameter.

[0260] S1007. The network device determines the pending transmission parameters in the second access message based on the first number of transmissions, and sends the second access message to the terminal device.

[0261] S1008. In response to receiving the second access message sent by the network device, the terminal device determines the first number of transmissions required for the terminal device to send the third access message.

[0262] S1009. The terminal device sends a third access message to the network device according to the first number of transmissions.

[0263] Using the above method, the terminal device can implicitly report its first polarization parameter through the first access message. The network device can determine the first transmission number of the third access message sent by the terminal device based on the first polarization parameter, and instruct the terminal to send the third access message according to the first transmission number through the second access message (Msg2). This enables the implicit reporting of the terminal device's first polarization parameter and achieves the purpose of controlling the repeated transmission or retransmission of the third access message, thereby improving the access success rate of the terminal device to the network device.

[0264] Figure 11 This is a block diagram illustrating a communication device 1100 according to an exemplary embodiment. The device 1100 can be applied to terminal devices, such as... Figure 11 As shown, the device 1100 may include:

[0265] The first parameter determination module 1101 is configured to determine the first polarization parameter of the terminal device;

[0266] The first message sending module 1102 is configured to send a first access message to the network device according to the first polarization parameter; the first access message is used to instruct the network device to obtain the first polarization parameter according to the first access message.

[0267] Figure 12 This is a block diagram illustrating a communication device 1100 according to an exemplary embodiment, such as... Figure 12 As shown, the device may further include:

[0268] The access parameter receiving module 1201 is configured to receive undetermined access parameters corresponding to undetermined polarization parameters sent by the network device; the undetermined polarization parameters include the first polarization parameter;

[0269] The first message sending module 1102 is configured to determine the first access parameter corresponding to the first polarization parameter; and to use the undetermined access parameter corresponding to the first polarization parameter as the first access parameter.

[0270] Optionally, the pending access parameters are carried in the random access information field, which includes one or more of the following information fields:

[0271] The RACH-ConfigCommon information field is used for random access channel common configuration.

[0272] The RACH-ConfigCommonTwoStepRA information field contains the common configuration information for the random access channel in two-step random access.

[0273] The dedicated configuration information for the random access channel is RACH-ConfigDedicated.

[0274] Optionally, the pending access parameters include one or more of the following parameters:

[0275] The undetermined polarization parameters correspond to the undetermined physical random access channel root sequence index prach-RootSequenceIndex;

[0276] The undetermined polarization parameters correspond to the undetermined physical random access channel general configuration rach-ConfigGeneric.

[0277] The undetermined polarization parameters correspond to the undetermined synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

[0278] Optionally, the first message sending module 1102 is configured to determine the second access parameter corresponding to the first polarization parameter according to the first polarization access parameter correspondence pre-set by the terminal device; the first polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the first polarization access parameter correspondence is the same as the second polarization access parameter correspondence pre-set by the network device; and send the first access message to the network device according to the second access parameter.

[0279] Optionally, the first polarization parameter is used to characterize the antenna polarization type of the terminal device, the antenna polarization type including circular polarization type and / or linear polarization type.

[0280] Figure 13 This is a block diagram illustrating a communication device 1100 according to an exemplary embodiment, such as... Figure 13 As shown, the device may further include:

[0281] The second message receiving module 1103 is configured to determine the first number of transmissions of the third access message sent by the terminal device in response to receiving the second access message sent by the network device.

[0282] The third message sending module 1104 is configured to send a third access message to the network device according to the first number of transmissions.

[0283] Optionally, the second message receiving module 1103 is configured to obtain the pending transmission parameters in the second access message and determine the first transmission count based on the pending transmission parameters.

[0284] Optionally, the undetermined transmission parameters include a first transmission parameter and / or a second transmission parameter.

[0285] Optionally, the second access message includes downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter including the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter including the redundancy version (RV) in the DCI.

[0286] Optionally, when the pending transmission parameters include a first transmission parameter and a second transmission parameter, the second message receiving module 1103 is configured to determine the first transmission count based on the second transmission parameter when the first transmission parameter is a first preset parameter value; or, when the second transmission parameter is a second preset parameter value, determine the first transmission count based on the first transmission parameter.

[0287] Optionally, the second message receiving module 1103 is configured to determine the first number of transmissions based on the first parameter and / or the second parameter when it receives the first access parameter sent by the network device, or when it receives the first indication message sent by the network device; the first indication message is used to enable the downlink control information format DCI 0-0 to control the dynamic repeated transmission count.

[0288] Optionally, the second message receiving module 1103 is configured to use the value of the pending transmission parameter as the first transmission count.

[0289] Optionally, the second message receiving module 1103 is configured to determine the correspondence of target transmission parameters; the correspondence of target transmission parameters includes the correspondence between the undetermined transmission parameters and the first number of transmissions;

[0290] Based on the target transmission parameter correspondence, the first transmission count corresponding to the undetermined transmission parameter is obtained.

[0291] Optionally, the second message receiving module 1103 is configured to receive a first pending transmission parameter correspondence sent by the network device;

[0292] The first undetermined transmission parameter correspondence is used as the target transmission parameter correspondence.

[0293] Optionally, the second message receiving module 1103 is configured to use the second pending transmission parameter correspondence preset by the terminal device as the target transmission parameter correspondence; the second pending transmission parameter correspondence is the same as the third pending transmission parameter correspondence preset by the network device.

[0294] Figure 14 This is a block diagram illustrating a communication device 1400 according to an exemplary embodiment. The device 1400 can be applied to network devices, such as… Figure 14 As shown, the device 1400 may include:

[0295] The first message receiving module 1401 is configured to receive a first access message; the first access message is a message sent by the terminal device to the network device to request access to the network device according to the first polarization parameter of the terminal device.

[0296] The first parameter acquisition module 1402 is configured to acquire the first polarization parameter of the terminal device based on the first access message.

[0297] Figure 15 This is a block diagram illustrating a communication device 1400 according to an exemplary embodiment, such as... Figure 15 As shown, the device may further include:

[0298] The access parameter determination module 1501 is configured to determine the undetermined access parameters corresponding to the undetermined polarization parameters; the undetermined polarization parameters include the first polarization parameter;

[0299] The access parameter sending module 1502 is configured to send the pending access parameters to the terminal device; the pending access parameters are used to instruct the terminal device to use the pending access parameters corresponding to the first polarization parameters as the first access parameters, and to send the first access message to the network device according to the first access parameters.

[0300] The first parameter acquisition module 1402 is configured to determine the first access parameter corresponding to the first access message; and to determine the first polarization parameter of the terminal device based on the first access parameter.

[0301] Optionally, the pending access parameters are carried in the random access information field, which includes one or more of the following information fields:

[0302] The RACH-ConfigCommon information field is used for random access channel common configuration.

[0303] The RACH-ConfigCommonTwoStepRA information field contains the common configuration information for the random access channel in two-step random access.

[0304] The dedicated configuration information for the random access channel is RACH-ConfigDedicated.

[0305] Optionally, the pending access parameters include one or more of the following parameters:

[0306] The undetermined polarization parameters correspond to the undetermined physical random access channel root sequence index prach-RootSequenceIndex;

[0307] The undetermined polarization parameters correspond to the undetermined physical random access channel general configuration rach-ConfigGeneric.

[0308] The undetermined polarization parameters correspond to the undetermined synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

[0309] Optionally, the first parameter acquisition module 1402 is configured to determine the second access parameter corresponding to the first access message; and to acquire the first polarization parameter corresponding to the second access parameter according to the second polarization access parameter correspondence pre-set by the network device; the second polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the second polarization access parameter correspondence is the same as the first polarization access parameter correspondence pre-set by the terminal device.

[0310] Optionally, the first polarization parameter is used to characterize the antenna polarization type of the terminal device, the antenna polarization type including circular polarization type and / or linear polarization type.

[0311] Figure 16 This is a block diagram illustrating a communication device 1400 according to an exemplary embodiment, such as... Figure 16 As shown, the device may further include:

[0312] The second message sending module 1601 is configured to send a second access message to the terminal device; the second access message is used to instruct the terminal device to determine a first number of transmissions to send a third access message, and to send a third access message to the network device according to the first number of transmissions.

[0313] Optionally, the second message sending module 1601 is configured to determine the first number of transmissions based on the first polarization parameter and the second polarization parameter of the network device; determine the pending transmission parameters in the second access message based on the first number of transmissions; and send the second access message to the terminal device.

[0314] Optionally, the undetermined transmission parameters include a first transmission parameter and / or a second transmission parameter.

[0315] Optionally, the second access message includes downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter including the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter including the redundancy version (RV) in the DCI.

[0316] Optionally, when the undetermined transmission parameters include a first transmission parameter and a second transmission parameter, the second message sending module 1601 is configured to use a first preset parameter value as the first transmission parameter and determine the second transmission parameter based on the first transmission count; or, to use a second preset parameter value as the second transmission parameter and determine the first transmission parameter based on the first transmission count.

[0317] Optionally, the second message sending module 1601 is configured to determine the first parameter and / or the second parameter based on the first transmission count when sending the first access parameter to the terminal device or sending a first indication message to the terminal device; the first indication message is used to enable the downlink control information format DCI0-0 to control the dynamic repeated transmission count.

[0318] Optionally, the second message sending module 1601 is configured to use the first number of transmissions as the pending transmission parameter.

[0319] Optionally, the second message sending module 1601 is configured to obtain the pending transmission parameters corresponding to the first transmission count according to a third pending transmission parameter correspondence pre-set by the network device; the third pending transmission parameter correspondence includes the correspondence between the pending transmission parameters and the first transmission count.

[0320] Figure 17 This is a block diagram illustrating a communication device 1400 according to an exemplary embodiment, such as... Figure 17 As shown, the device may further include:

[0321] The relationship determination module 1701 is configured to use the third undetermined transmission parameter correspondence as the first undetermined transmission parameter correspondence.

[0322] The relationship sending module 1702 is configured to send the first pending transmission parameter correspondence to the terminal device; the first pending transmission parameter correspondence is used to instruct the terminal device to obtain the target transmission parameter correspondence according to the first pending transmission parameter correspondence.

[0323] Optionally, the correspondence between the third undetermined transmission parameters is the same as the correspondence between the second undetermined transmission parameters preset by the terminal device.

[0324] Optionally, the second message sending module 1601 is configured to use the first preset number of times as the first transmission number when the first polarization parameter and the second polarization parameter are different; and to use the second preset number of times as the first transmission number when the first polarization parameter and the second polarization parameter are the same; wherein the first preset number of times is greater than or equal to the second preset number of times.

[0325] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0326] Figure 18 This is a block diagram illustrating a communication device 2000 according to an exemplary embodiment. For example, the communication device 2000 may be a terminal device, such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.; the communication device 2000 may also be the aforementioned network device. The communication device 2000 may also be a server.

[0327] Reference Figure 18 The device 2000 may include one or more of the following components: a processing component 2002, a memory 2004, and a communication component 2006.

[0328] Processing component 2002 typically controls the overall operation of device 2000, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 2002 may include one or more processors 2020 to execute instructions to complete all or part of the steps of the aforementioned communication methods. Furthermore, processing component 2002 may include one or more modules to facilitate interaction between processing component 2002 and other components. For example, processing component 2002 may include a multimedia module to facilitate interaction between multimedia components and processing component 2002.

[0329] Memory 2004 is configured to store various types of data to support the operation of device 2000. Examples of this data include instructions for any application or method operating on device 2000, contact data, phonebook data, messages, pictures, videos, etc. Memory 2004 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 storage, flash memory, magnetic disk, or optical disk.

[0330] Communication component 2006 is configured to facilitate wired or wireless communication between device 2000 and other devices. Device 2000 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 2006 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 2006 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0331] In an exemplary embodiment, the device 2000 may 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 the communication method described above.

[0332] The aforementioned device 2000 can be a standalone electronic device or a part of a standalone electronic device. For example, in one embodiment, the electronic device can be an integrated circuit (IC) or a chip, wherein the integrated circuit can be a single IC or a collection of multiple ICs; the chip can include, but is not limited to, the following types: GPU (Graphics Processing Unit), CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), SOC (System on Chip), etc. The aforementioned integrated circuit or chip can be used to execute executable instructions (or code) to implement the aforementioned communication method. The executable instructions can be stored in the integrated circuit or chip or obtained from other devices or equipment. For example, the integrated circuit or chip includes a processor, memory, and an interface for communicating with other devices. The executable instruction can be stored in the processor, and when the executable instruction is executed by the processor, the above-mentioned communication method is implemented; or, the integrated circuit or chip can receive the executable instruction through the interface and transmit it to the processor for execution to implement the above-mentioned communication method.

[0333] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 2004 including instructions, which can be executed by a processor 2020 of the device 2000 to perform the aforementioned communication method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0334] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the above-described communication method when executed by the programmable device.

[0335] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0336] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, A method for use with terminal equipment in a non-terrestrial network (NTN) includes: Determine the first polarization parameter of the terminal device; A first access message is sent to the network device according to the first polarization parameter; the first access message is used to instruct the network device to obtain the first polarization parameter according to the first access message; the first access message is also used for the terminal device to request access to the network device, and / or to instruct the network device to process the access request of the terminal device according to the first access message; The method further includes: In response to receiving a second access message sent by the network device, the pending transmission parameters in the second access message are obtained; The value of the undetermined transmission parameter is used as the first transmission count for the terminal device to send the third access message; the first transmission count is used to represent any one of the following: the number of repeated transmissions of the third access message; the number of retransmissions of the third access message; the total number of repeated transmissions and retransmissions of the third access message; Based on the first number of transmissions, the third access message is sent to the network device.

2. The method according to claim 1, characterized in that, The method further includes: The network device receives undetermined access parameters corresponding to the undetermined polarization parameters; the undetermined polarization parameters include the first polarization parameter. Sending the first access message to the network device according to the first polarization parameter includes: The undetermined access parameter corresponding to the first polarization parameter is taken as the first access parameter; The first access message is sent to the network device according to the first access parameters.

3. The method according to claim 2, characterized in that, The pending access parameters are carried in the random access information field, which includes one or more of the following information fields: The RACH-ConfigCommon information field is used for random access channel common configuration. The RACH-ConfigCommonTwoStepRA information field contains the common configuration information for the random access channel in two-step random access. The dedicated configuration information for the random access channel is RACH-ConfigDedicated.

4. The method according to claim 2, characterized in that, The pending access parameters include one or more of the following parameters: The first polarization parameter corresponds to the undetermined physical random access channel root sequence index prach-RootSequenceIndex; The undetermined physical random access channel general configuration rach-ConfigGeneric corresponding to the first polarization parameter; The undetermined synchronization signal block corresponding to the first polarization parameter shares the physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

5. The method according to claim 1, characterized in that, Sending the first access message to the network device according to the first polarization parameter includes: Based on the first polarization access parameter correspondence pre-set by the terminal device, the second access parameter corresponding to the first polarization parameter is determined; the first polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the first polarization access parameter correspondence is the same as the second polarization access parameter correspondence pre-set by the network device; The first access message is sent to the network device according to the second access parameters.

6. The method according to claim 1, characterized in that, The first polarization parameter is used to characterize the antenna polarization type of the terminal device, and the antenna polarization type includes circular polarization type and / or linear polarization type.

7. The method according to claim 1, characterized in that, The undetermined transmission parameters include a first transmission parameter and / or a second transmission parameter.

8. The method according to claim 7, characterized in that, The second access message includes downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter includes the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter includes the redundancy version (RV) in the DCI.

9. The method according to claim 7, characterized in that, When the undetermined transmission parameters include a first transmission parameter and a second transmission parameter, determining the first transmission count based on the undetermined transmission parameters includes: If the first transmission parameter is a first preset parameter value, the first transmission count is determined based on the second transmission parameter; or, When the second transmission parameter is a second preset parameter value, the first number of transmissions is determined based on the first transmission parameter.

10. The method according to claim 7, characterized in that, Determining the first transmission count based on the undetermined transmission parameters includes: Upon receiving the first access parameter sent by the network device, or upon receiving the first indication message sent by the network device, the first transmission count is determined based on the first transmission parameter and / or the second transmission parameter; the first indication message is used to enable the downlink control information format DCI 0-0 to control the dynamic repeated transmission count.

11. The method according to claim 1, characterized in that, Determining the first transmission count based on the undetermined transmission parameters includes: Determine the correspondence between target transmission parameters; the correspondence between target transmission parameters includes the correspondence between the undetermined transmission parameters and the first number of transmissions; Based on the target transmission parameter correspondence, the first transmission count corresponding to the undetermined transmission parameter is obtained.

12. The method according to claim 11, characterized in that, The determination of the target transmission parameter correspondence includes: Receive the first pending transmission parameter correspondence sent by the network device; The first undetermined transmission parameter correspondence is used as the target transmission parameter correspondence.

13. The method according to claim 11, characterized in that, The determination of the target transmission parameter correspondence includes: The second pending transmission parameter correspondence preset by the terminal device is used as the target transmission parameter correspondence; the second pending transmission parameter correspondence is the same as the third pending transmission parameter correspondence preset by the network device.

14. A communication method, characterized in that, The method, applied to network devices in NTN, includes: Receive a first access message; the first access message is a message sent by the terminal device to the network device according to the first polarization parameter of the terminal device for requesting access to the network device; the first access message is also used for the terminal device to request access to the network device, and / or to instruct the network device to process the access request of the terminal device according to the first access message; Based on the first access message, the first polarization parameter of the terminal device is obtained; The method further includes: A second access message is sent to the terminal device; the second access message is used to instruct the terminal device to obtain the pending transmission parameters in the second access message, the value of the pending transmission parameters being the first transmission count of the terminal device sending the third access message; the second access message is also used to instruct the terminal device to send the third access message to the network device according to the first transmission count; the first transmission count is used to represent any one of the following: the number of times the third access message is repeatedly transmitted; the number of times the third access message is retransmitted; the total number of times the third access message is repeatedly transmitted and retransmitted.

15. The method according to claim 14, characterized in that, The method further includes: Determine the undetermined access parameters corresponding to the undetermined polarization parameters; the undetermined polarization parameters include the first polarization parameter; The pending access parameters are sent to the terminal device; the pending access parameters are used to instruct the terminal device to use the pending access parameters corresponding to the first polarization parameters as the first access parameters, and to send the first access message to the network device according to the first access parameters. The step of obtaining the first polarization parameter of the terminal device according to the first access message includes: Determine the first access parameter corresponding to the first access message; The first polarization parameter of the terminal device is determined based on the first access parameter.

16. The method according to claim 15, characterized in that, The pending access parameters are carried in the random access information field, which includes one or more of the following information fields: The RACH-ConfigCommon information field is used for random access channel common configuration. The RACH-ConfigCommonTwoStepRA information field contains the common configuration information for the random access channel in two-step random access. The dedicated configuration information for the random access channel is RACH-ConfigDedicated.

17. The method according to claim 15, characterized in that, The pending access parameters include one or more of the following parameters: The undetermined polarization parameters correspond to the undetermined physical random access channel root sequence index prach-RootSequenceIndex; The undetermined polarization parameters correspond to the undetermined physical random access channel general configuration rach-ConfigGeneric. The undetermined polarization parameters correspond to the undetermined synchronization signal block shared physical random access channel transmission opportunity mask SSB-SharedRO-MaskIndex.

18. The method according to claim 14, characterized in that, The step of obtaining the first polarization parameter of the terminal device according to the first access message includes: Determine the second access parameter corresponding to the first access message; According to the second polarization access parameter correspondence pre-set by the network device, the first polarization parameter corresponding to the second access parameter is obtained; the second polarization access parameter correspondence includes the correspondence between the first polarization parameter and the second access parameter, and the second polarization access parameter correspondence is the same as the first polarization access parameter correspondence pre-set by the terminal device.

19. The method according to claim 14, characterized in that, The first polarization parameter is used to characterize the antenna polarization type of the terminal device, and the antenna polarization type includes circular polarization type and / or linear polarization type.

20. The method according to claim 14, characterized in that, Sending the second access message to the terminal device includes: The first number of transmissions is determined based on the first polarization parameter and the second polarization parameter of the network device; The pending transmission parameters in the second access message are determined based on the first number of transmissions. The second access message is sent to the terminal device.

21. The method according to claim 20, characterized in that, The undetermined transmission parameters include a first transmission parameter and / or a second transmission parameter.

22. The method according to claim 21, characterized in that, The second access message includes downlink control information (DCI) for indicating uplink channel transmission, the first transmission parameter includes the hybrid automatic repeat request process number (HARQ-Process-Number) in the DCI, and the second transmission parameter includes the redundancy version (RV) in the DCI.

23. The method according to claim 21, characterized in that, When the pending transmission parameters include a first transmission parameter and a second transmission parameter, determining the pending transmission parameters in the second access message based on the first transmission count includes: Use the first preset parameter value as the first transmission parameter, and determine the second transmission parameter based on the first number of transmissions; or, The second preset parameter value is used as the second transmission parameter, and the first transmission parameter is determined based on the first number of transmissions.

24. The method according to claim 21, characterized in that, Determining the undetermined transmission parameters in the second access message based on the first number of transmissions includes: When sending a first access parameter to the terminal device, or sending a first indication message to the terminal device, the first transmission parameter and / or the second transmission parameter are determined based on the first transmission count; the first indication message is used to enable the downlink control information format DCI 0-0 to control the dynamic repeated transmission count.

25. The method according to claim 20, characterized in that, Determining the undetermined transmission parameters in the second access message based on the first number of transmissions includes: The first number of transmissions is used as the transmission parameter to be determined.

26. The method according to claim 20, characterized in that, Determining the undetermined transmission parameters in the second access message based on the first number of transmissions includes: Based on the pre-set third pending transmission parameter correspondence of the network device, the pending transmission parameters corresponding to the first transmission count are obtained; the third pending transmission parameter correspondence includes the correspondence between the pending transmission parameters and the first transmission count.

27. The method according to claim 26, characterized in that, The method further includes: The correspondence of the third undetermined transmission parameters is taken as the correspondence of the first undetermined transmission parameters. The first pending transmission parameter correspondence is sent to the terminal device; the first pending transmission parameter correspondence is used to instruct the terminal device to obtain the target transmission parameter correspondence based on the first pending transmission parameter correspondence.

28. The method according to claim 26, characterized in that, The correspondence between the third undetermined transmission parameters is the same as the correspondence between the second undetermined transmission parameters preset by the terminal device.

29. The method according to claim 20, characterized in that, Determining the first number of transmissions based on the first polarization parameter and the second polarization parameter of the network device includes: When the first polarization parameter and the second polarization parameter are different, the first preset number of times is taken as the first number of transmissions; When the first polarization parameter and the second polarization parameter are the same, the second preset number of times is taken as the first number of transmissions; Wherein, the first preset number of times is greater than or equal to the second preset number of times.

30. A communication device, characterized in that, Terminal devices used in NTN, the apparatus comprising: The first parameter determination module is configured to determine the first polarization parameter of the terminal device; The first message sending module is configured to send a first access message to the network device according to the first polarization parameter; the first access message is used to instruct the network device to obtain the first polarization parameter according to the first access message; the first access message is also used for the terminal device to request access to the network device, and / or to instruct the network device to process the access request of the terminal device according to the first access message; The device further includes: The second message receiving module is configured to, in response to receiving a second access message sent by the network device, obtain a pending transmission parameter in the second access message; and use the value of the pending transmission parameter as the first transmission count for the terminal device to send a third access message; the first transmission count is used to characterize any one of the following: the number of repeated transmissions of the third access message; the number of retransmissions of the third access message; and the total number of repeated transmissions and retransmissions of the third access message. The third message sending module is configured to send the third access message to the network device according to the first number of transmissions.

31. A communication device, characterized in that, Network devices used in NTN, the device comprising: The first message receiving module is configured to receive a first access message; the first access message is a message sent by the terminal device to the network device according to the first polarization parameter of the terminal device for requesting access to the network device; the first access message is also used for the terminal device to request access to the network device, and / or to instruct the network device to process the access request of the terminal device according to the first access message; The first parameter acquisition module is configured to acquire the first polarization parameter of the terminal device based on the first access message; The device further includes: The second message sending module is configured to send a second access message to the terminal device; the second access message is used to instruct the terminal device to obtain the pending transmission parameters in the second access message, the value of the pending transmission parameters being the first transmission count of the terminal device sending the third access message; the second access message is also used to instruct the terminal device to send the third access message to the network device according to the first transmission count; the first transmission count is used to represent any one of the following: the number of times the third access message is repeatedly transmitted; the number of times the third access message is retransmitted; the total number of times the third access message is repeatedly transmitted and retransmitted.

32. A terminal device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the steps of the method according to any one of claims 1 to 13.

33. A network device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the steps of the method according to any one of claims 14 to 29.

34. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When the computer program instructions are executed by a processor, they implement the steps of the method according to any one of claims 1 to 13, or when the computer program instructions are executed by a processor, they implement the steps of the method according to any one of claims 14 to 29.

35. A chip, characterized in that, It includes a processor and an interface; the processor is configured to read instructions to perform the steps of the method according to any one of claims 1 to 13, or the processor is configured to read instructions to perform the steps of the method according to any one of claims 14 to 29.

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