Communication method and related equipment

Abstract

A communication method and a related device, in the method, a terminal device can obtain first non-terrestrial network (NTN) parameter information corresponding to an NTN cell indicated by first non-terrestrial network (NTN) carrier frequency information in a terrestrial network cell, and subsequently, the terminal device can communicate with the NTN cell based on the first NTN parameter information. Therefore, through the mode of communicating with the TN cell, the time delay of communication between the terminal equipment and the NTN cell can be reduced, so that the communication efficiency is improved. Furthermore, the third information received by the terminal equipment through the TN cell is used for indicating that the first NTN carrier frequency information corresponds to the first NTN parameter information, so that the terminal equipment can quickly determine the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information based on the indication of the third information. The time delay increase caused by blind detection of the terminal equipment based on the NTN carrier frequency information and the NTN parameter information is avoided, and the time delay of communication between the terminal equipment and the NTN cell can be further reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless technology, and in particular to a communication method and related equipment. Background Art

[0002] In a communication system, a signal that a network device can send (e.g., the signal carries configuration information / configuration signaling, etc.) can configure communication resources. The communication resources may include the communication resources of the network device and the communication resources of adjacent network devices that may exist, so that the receiver of the signal can determine the corresponding communication resources based on the signal. For example, when the receiver of the signal is a terminal device, the terminal device can obtain network services based on the communication resources.

[0003] At present, the network equipment may be a device fixed somewhere on the ground, such as a ground base station belonging to a terrestrial network (TN) cell. With the development of communication technology, the network equipment may not be fixed somewhere on the ground. For example, the network equipment may be a high-speed mobile device belonging to a non-terrestrial network (NTN) cell, such as satellite equipment such as low-orbit satellites, medium-orbit satellites and high-orbit satellites. Among them, unlike the ground base station belonging to the TN cell, since the satellite equipment belonging to the NTN cell moves at a high speed, the terminal equipment needs to obtain NTN parameter information (such as satellite ephemeris information) before it can communicate with the NTN cell, such as performing cell measurement on the NTN cell, executing cell switching to the NTN cell, and staying in the NTN cell. Generally, the terminal equipment can obtain the NTN parameter information through the information broadcast by the NTN cell.

[0004] However, in the above implementation process, the terminal device needs to be within the coverage of the NTN cell to obtain the NTN parameter information. This approach will increase the communication delay between the terminal device and the NTN cell, thereby affecting the communication efficiency. Summary of the invention

[0005] The present application provides a communication method and related equipment for reducing the communication delay between a terminal device and an NTN cell to improve communication efficiency.

[0006] In a first aspect, the present application provides a communication method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the functions of the terminal device. In the first aspect and its possible implementation, the communication method is described as being executed by a terminal device. In the method, the terminal device receives first information, second information and third information, and the first information, the second information and the third information are all from a TN cell; wherein the first information includes first NTN carrier frequency information, the second information includes first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0007] Based on the above technical solution, the terminal device receives the first information, the second information and the third information through the TN cell. Among them, the first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and subsequently the terminal device can communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and can reduce the delay of the terminal device communicating with the NTN cell to improve the communication efficiency.

[0008] In addition, the third information received by the terminal device through the TN cell is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information, which enables the terminal device to quickly determine the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information based on the indication of the third information, thereby avoiding the increase in delay caused by the terminal device performing blind detection based on the NTN carrier frequency information and the NTN parameter information, and further reducing the delay in communication between the terminal device and the NTN cell.

[0009] In the present application, the NTN carrier frequency information (for example, the first NTN carrier frequency information, or the second NTN carrier frequency information described later) received by the terminal device may include at least one of the following information related to the carrier frequency:

[0010] Public land mobile network (PLMN) identification or index, cell identification or index, cell frequency information, cell band information, cell reselection priority information, access permission identification information (the information indicates whether the terminal is allowed to access the cell), average synchronization signal / physical broadcast channel block (SS / PBCH block or SSB) number used for cell measurement derivation, SSB subcarrier spacing, SSB-based measurement timing configuration (SMTC) configuration information (i.e., measurement timing configuration for NTN cell measurement, through which the terminal device can accurately measure the NTN cell), threshold information of signal strength and / or quality related to cell reselection (if the signal strength and / or quality of the NTN cell measured by the terminal is greater than the threshold, the terminal reselects to the NTN cell), time information related to cell reselection (the information can also be used in combination with the above-mentioned signal strength and / or quality threshold information, if the signal strength and / or quality of the NTN cell measured by the terminal is continuously greater than the threshold within the time range indicated by the time information, the terminal reselects to the NTN cell).

[0011] In the present application, the NTN parameter information (for example, the first NTN parameter information, and other NTN parameter information that may exist) includes at least one of the following: ephemeris information, common timing advance (TA) parameters, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink (DL) polarization indication information, uplink (UL) polarization indication information, and TA report enable information.

[0012] Optionally, the third information includes at least one of the following:

[0013] An identifier of the first NTN parameter information;

[0014] An identifier of the first NTN carrier frequency information;

[0015] Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to the positions of the N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

[0016] It should be noted that, when the value of N is greater than 1, the N NTN parameter information may include other NTN parameter information in addition to the first NTN parameter information, such as the second NTN parameter information, the third NTN parameter information, etc. Exemplarily, the leftmost bit or the first bit in the bitmap information corresponds to the first NTN parameter information, the second bit corresponds to the second NTN parameter information, and so on. In addition, the first NTN parameter information may be the first NTN parameter information among the N NTN parameter information included in the second information, the second NTN parameter information may be the second NTN parameter information among the N NTN parameter information included in the second information, and so on.

[0017] In a possible implementation manner of the first aspect, the first information, the second information, and the third information are carried in a first system information block (SIB).

[0018] Based on the above technical solution, the first information, second information and third information received by the terminal device can be carried in the first SIB, that is, the terminal device can obtain the first information, second information and third information through the same SIB, which can save overhead and enable the terminal device to quickly obtain various information through the same SIB.

[0019] In a possible implementation manner of the first aspect, the method also includes: the terminal device receives SIB1, the SIB1 includes scheduling information of the first SIB or the SIB1 includes scheduling information of the system message where the first SIB is located; the terminal device receives the first information, the second information and the third information, including: the terminal device receives the first information, the second information and the third information according to the scheduling information of the first SIB.

[0020] It should be understood that SIB1 may include scheduling information of one or more SIBs (for example, SIB2 to SIB21, and a possible SIB x is an integer greater than 21, for example, SIBx may be SIB22, SIB23, SIB24, etc.), and the scheduling information may be used to indicate the time domain resources, frequency domain resources, etc. that carry the one or more SIBs, such as the system message window length, the system message period, which SIBs or positioning system information blocks (positioning SIB, posSIB) are included in the system message, etc.

[0021] Based on the above technical solution, the terminal device can receive the first information, the second information and the third information based on the scheduling information of the first SIB contained in SIB1, so that the terminal device can accurately receive the first SIB and then obtain the first information, the second information and the third information.

[0022] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the first SIB is different from SIB2 to SIB21. For example, the first SIB may be SIB x, where x is an integer greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the first SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0023] Optionally, the first SIB is SIB3 or SIB4 or SIB5.

[0024] In a possible implementation manner of the first aspect, the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB; or, the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB.

[0025] Based on the above technical solution, the third information can be carried in the same SIB (e.g., the second SIB) as the first information, or the third information can be carried in the same SIB (e.g., the second SIB) as the second information. In this way, when the amount of data of the NTN cell frequency information carried by the first information or the NTN parameter information carried by the second information is too large, the terminal device can obtain the first information, the second information, and the third information in two different SIBs, which can reduce the implementation complexity.

[0026] Optionally, the first information, the second information and the third information may be carried in three different SIBs.

[0027] In a possible implementation manner of the first aspect, the method also includes: the terminal device receives SIB1, and the SIB1 includes the scheduling information of the second SIB and the scheduling information of the third SIB, or the SIB1 includes the scheduling information of the system message where the second SIB is located and the scheduling information of the system message where the third SIB is located; when the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the terminal device receives the first information, the second information, and the third information, including: the terminal device receives the first information and the third information based on the scheduling information of the second SIB, and receives the second information based on the scheduling information of the third SIB; when the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the terminal device receives the first information, the second information, and the third information, including: the terminal device receives the first information based on the scheduling information of the second SIB, and receives the second information and the third information based on the scheduling information of the third SIB.

[0028] Based on the above technical solution, the terminal device can receive the first information, the second information and the third information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information, the second information and the third information.

[0029] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the second SIB and the third SIB may be different from SIB2 to SIB21, for example, the second SIB may be SIB x, and the third SIB may be SIB y, where x and y are both integers greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the second SIB and the third SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x and SIB y, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0030] Optionally, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0031] In a possible implementation manner of the first aspect, the first information further includes second NTN carrier frequency information, where the second NTN carrier frequency information corresponds to the first NTN parameter information.

[0032] Based on the above technical solution, in addition to the first NTN carrier frequency information, the first information may also include the second NTN carrier frequency information, and both the first NTN carrier frequency information and the second NTN carrier frequency information correspond to the first NTN parameter information (for example, the NTN cell indicated by the first NTN carrier frequency information and the NTN cell indicated by the second NTN carrier frequency information may be located on the same satellite, or may be located on different satellites with the same NTN parameter information). In other words, the terminal device can determine the NTN parameters of the NTN cell indicated by the first NTN carrier frequency information and the NTN parameters of the NTN cell indicated by the second NTN carrier frequency information based on the first NTN parameter information. In this way, compared with the way of carrying one or more NTN parameter information corresponding to one or more NTN frequency information, the signaling overhead can be reduced.

[0033] In a possible implementation manner of the first aspect, the method further includes: the terminal device sends access information to the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information; and / or, the terminal device sends a measurement result, which is obtained by measuring a signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

[0034] Optionally, the terminal device performs measurement of the NTN cell indicated by one or more NTN carrier frequency information (including the first NTN carrier frequency information) contained in the first information, and after obtaining one or more measurement results, the terminal device may choose to send part or all of the one or more measurement results. For example, the terminal device may send part or all of the measurement results for which the signal quality information corresponding to the one or more measurement results is greater than or equal to a threshold, and the signal quality information may include one or more of a reference signal received power (reference signal received power, RSRP) and a reference signal received quality (reference signal received quality, RSRQ).

[0035] Based on the above technical solution, when the terminal device determines based on the third information that the first NTN carrier frequency information corresponds to the first NTN parameter information, the terminal device can communicate with the NTN cell indicated by the first NTN carrier frequency information. For example, the terminal device can send access information to the NTN cell to access the NTN cell. For another example, the terminal device can receive a signal from the NTN cell, measure the signal from the NTN cell to obtain a measurement result, and implement cell reselection based on the measurement result, or reside in the NTN cell based on the measurement result, or send the measurement result to implement cell switching, etc.

[0036] In a possible implementation manner of the first aspect, the first information, the second information, and the third information are carried in the same unicast message, or the first information, the second information, and the third information are carried in at least two different unicast messages.

[0037] Based on the above technical solution, in addition to being carried in the SIB transmitted in a broadcast manner, the first information, the second information and the third information can also be carried in one or more unicast messages sent by the TN cell to the terminal device. In this way, the terminal device can obtain relevant information of the NTN cell (including NTN carrier frequency information and NTN parameter information, etc.) based on the unicast scheduling of the TN cell, and can subsequently further communicate with the NTN cell based on the relevant information of the NTN cell.

[0038] The second aspect of the present application provides a communication method, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the second aspect and its possible implementation, the communication method is described as an example of being executed by a network device. In this method, the network device sends first information, second information and third information through a TN cell; wherein the first information includes first NTN carrier frequency information, the second information includes first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0039] Based on the above technical solution, the network device sends the first information, the second information and the third information through the TN cell. Among them, the first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and can reduce the delay of the terminal device communicating with the NTN cell to improve the communication efficiency.

[0040] In addition, the third information sent by the network device through the TN cell is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information, which enables the terminal device to quickly determine the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information based on the indication of the third information, thereby avoiding the increase in delay caused by the terminal device performing blind detection based on the NTN carrier frequency information and the NTN parameter information, and further reducing the delay in communication between the terminal device and the NTN cell.

[0041] Optionally, the third information includes at least one of the following:

[0042] An identifier of the first NTN parameter information;

[0043] An identifier of the first NTN carrier frequency information;

[0044] Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to the positions of the N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

[0045] It should be noted that, when the value of N is greater than 1, the N NTN parameter information may include other NTN parameter information in addition to the first NTN parameter information, such as the second NTN parameter information, the third NTN parameter information, etc. Exemplarily, the leftmost bit or the first bit in the bitmap information corresponds to the first NTN parameter information, the second bit corresponds to the second NTN parameter information, and so on. In addition, the first NTN parameter information may be the first NTN parameter information among the N NTN parameter information included in the second information, the second NTN parameter information may be the second NTN parameter information among the N NTN parameter information included in the second information, and so on.

[0046] In a possible implementation manner of the second aspect, the first information, the second information, and the third information are carried in a first system information block SIB.

[0047] Based on the above technical solution, the first information, second information and third information sent by the network device can be carried in the first SIB, that is, the terminal device can obtain the first information, second information and third information through the same SIB, which can save overhead and enable the terminal device to quickly obtain various information through the same SIB.

[0048] In a possible implementation of the second aspect, the method also includes: the network device sends SIB1, the SIB1 includes scheduling information of the first SIB or the SIB1 includes scheduling information of the system message where the first SIB is located; the network device sends the first information, the second information and the third information, including: the network device sends the first information, the second information and the third information based on the scheduling information of the first SIB.

[0049] It should be understood that SIB1 may include scheduling information of one or more SIBs (for example, SIB2 to SIB21, and possible SIB xx is an integer greater than 21), and the scheduling information may be used to indicate the time domain resources, frequency domain resources, etc. that carry the one or more SIBs, such as the system message window length, the system message period, which SIBs or posSIBs are included in the system message, etc.

[0050] Based on the above technical solution, the network device can send the first information, the second information and the third information based on the scheduling information of the first SIB contained in SIB1, so that the terminal device can accurately receive the first SIB and obtain the first information, the second information and the third information.

[0051] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the first SIB is different from SIB2 to SIB21. For example, the first SIB may be SIB x, where x is an integer greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the first SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0052] Optionally, the first SIB is SIB3 or SIB4 or SIB5.

[0053] In a possible implementation manner of the second aspect, the first information and the third information are carried in a second SIB, and the second information is carried in a third SIB; or, the first information is carried in the second SIB, and the second information and the third information are carried in a third SIB.

[0054] Based on the above technical solution, the third information can be carried in the same SIB (e.g., the second SIB) as the first information, or the third information can be carried in the same SIB (e.g., the second SIB) as the second information. In this way, when the amount of data of the NTN cell frequency information carried by the first information or the NTN parameter information carried by the second information is too large, the terminal device can obtain the first information, the second information, and the third information in two different SIBs, which can reduce the implementation complexity.

[0055] Optionally, the first information, the second information and the third information may be carried in three different SIBs.

[0056] In a possible implementation manner of the second aspect, the method also includes: the network device sends SIB1, the SIB1 includes the scheduling information of the second SIB and the scheduling information of the third SIB, or the SIB1 includes the scheduling information of the system message where the second SIB is located and the scheduling information of the system message where the third SIB is located; when the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the network device sends the first information, the second information, and the third information, including: the network device sends the first information and the third information based on the scheduling information of the second SIB, and sends the second information based on the scheduling information of the third SIB; when the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the network device sends the first information, the second information, and the third information, including: the network device sends the first information based on the scheduling information of the second SIB, and sends the second information and the third information based on the scheduling information of the third SIB.

[0057] Based on the above technical solution, the network device can send the first information, the second information and the third information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information, the second information and the third information.

[0058] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the second SIB and the third SIB may be different from SIB2 to SIB21, for example, the second SIB may be SIB x, and the third SIB may be SIB y, where x and y are both integers greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the second SIB and the third SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x and SIB y, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0059] Optionally, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0060] In a possible implementation manner of the second aspect, the first information further includes second NTN carrier frequency information, where the second NTN carrier frequency information corresponds to the first NTN parameter information.

[0061] Based on the above technical solution, in addition to the first NTN carrier frequency information, the first information may also include the second NTN carrier frequency information, and both the first NTN carrier frequency information and the second NTN carrier frequency information correspond to the first NTN parameter information (for example, the NTN cell indicated by the first NTN carrier frequency information and the NTN cell indicated by the second NTN carrier frequency information may be located on the same satellite, or may be located on different satellites with the same NTN parameter information). In other words, the terminal device can determine the NTN parameters of the NTN cell indicated by the first NTN carrier frequency information and the NTN parameters of the NTN cell indicated by the second NTN carrier frequency information based on the first NTN parameter information. In this way, compared with the way of carrying one or more NTN parameter information corresponding to one or more NTN frequency information, the signaling overhead can be reduced.

[0062] In a possible implementation manner of the second aspect, the method further includes: the network device receiving a measurement result, where the measurement result is obtained by measuring a signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

[0063] Based on the above technical solution, when the terminal device determines based on the third information that the first NTN carrier frequency information corresponds to the first NTN parameter information, the terminal device can communicate with the NTN cell indicated by the first NTN carrier frequency information. For example, the terminal device can send access information to the NTN cell to access the NTN cell. For another example, the terminal device can receive the signal of the NTN cell, measure the signal of the NTN cell to obtain a measurement result, and implement cell reselection based on the measurement result, or reside in the NTN cell based on the measurement result, or send the measurement result (correspondingly, the network device where the TN cell is located can receive the measurement result) to implement cell switching, etc.

[0064] In a possible implementation manner of the second aspect, the first information, the second information, and the third information are carried in the same unicast message, or the first information, the second information, and the third information are carried in at least two different unicast messages.

[0065] Based on the above technical solution, in addition to being carried in the SIB transmitted in a broadcast manner, the first information, the second information and the third information can also be carried in one or more unicast messages sent by the TN cell to the terminal device. In this way, the terminal device can obtain relevant information of the NTN cell (including NTN carrier frequency information and NTN parameter information, etc.) based on the unicast scheduling of the TN cell, and can subsequently further communicate with the NTN cell based on the relevant information of the NTN cell.

[0066] The third aspect of the present application provides a communication method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the functions of the terminal device. In the third aspect and its possible implementation, the communication method is described as being executed by a terminal device. In this method, the terminal device receives SIB1 from a TN cell, and the SIB1 includes scheduling information of a first SIB; the terminal device receives first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0067] Based on the above technical solution, the terminal device receives the first information and the second information through the TN cell. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and the delay in the communication between the terminal device and the NTN cell can be reduced to improve the communication efficiency.

[0068] In addition, the terminal device can receive the first information and the second information based on the scheduling information of the first SIB contained in SIB1, so that the terminal device can accurately receive the first SIB, and then obtain the first information and the second information. Moreover, the first information and the second information received by the terminal device can be carried in the first SIB, that is, the terminal device can obtain the first information and the second information through the same SIB, which can save overhead and enable the terminal device to quickly obtain various information through the same SIB.

[0069] In a fourth aspect of the present application, a communication method is provided, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the fourth aspect and its possible implementation, the communication method is described as an example in which the network device executes it. In this method, the network device sends SIB1 through a TN cell, and the SIB1 includes scheduling information of a first SIB; the network device sends first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0070] Based on the above technical solution, the network device sends the first information and the second information through the TN cell. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and the delay of the terminal device communicating with the NTN cell can be reduced to improve the communication efficiency.

[0071] In addition, the first information and the second information sent by the network device can be carried in the first SIB, that is, the terminal device can obtain the first information and the second information through the same SIB, which can save overhead and enable the terminal device to quickly obtain various information through the same SIB.

[0072] In a possible implementation of the third aspect or the fourth aspect, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the first SIB is different from SIB2 to SIB21. For example, the first SIB may be SIB x, where x is an integer greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the first SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0073] In a possible implementation manner of the third aspect or the fourth aspect, the first SIB is SIB3 or SIB4 or SIB5.

[0074] The fifth aspect of the present application provides a communication method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the functions of the terminal device. In the fifth aspect and its possible implementation, the communication method is described as being executed by a terminal device. In this method, the terminal device receives SIB1 from a TN cell, and the SIB1 includes scheduling information of a second SIB and scheduling information of a third SIB; the terminal device receives first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the terminal device receives second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0075] Based on the above technical solution, the terminal device receives the first information and the second information through the TN cell. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and the delay in the communication between the terminal device and the NTN cell can be reduced to improve the communication efficiency.

[0076] In addition, the terminal device can receive the first information and the second information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information and the second information.

[0077] In the sixth aspect of the present application, a communication method is provided, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the sixth aspect and its possible implementation, the communication method is described as an example in which the network device executes it. In this method, the network device sends SIB1 through a TN cell, and the SIB1 includes scheduling information of a second SIB and scheduling information of a third SIB; the network device sends first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the network device sends second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0078] Based on the above technical solution, the network device sends the first information and the second information through the TN cell. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and the delay of the terminal device communicating with the NTN cell can be reduced to improve the communication efficiency.

[0079] In addition, the network device can send the first information and the second information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information and the second information.

[0080] In a possible implementation of the fifth aspect or the sixth aspect, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the second SIB and the third SIB may be different from SIB2 to SIB21, for example, the second SIB may be SIB x, and the third SIB may be SIB y, and x and y are both integers greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the second SIB and the third SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x and SIB y, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0081] In a possible implementation manner of the fifth aspect or the sixth aspect, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0082] In a seventh aspect of the present application, a communication device is provided, which can implement the method in the first aspect and any implementation thereof. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device, or the device can be a component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0083] The device includes a transceiver unit and a processing unit, the transceiver unit is used to receive first information, second information and third information, the first information, the second information and the third information all come from a TN cell; the first information includes first NTN carrier frequency information, the second information includes first NTN parameter information; the processing unit is used to determine that the first NTN carrier frequency information corresponds to the first NTN parameter information based on the third information.

[0084] In a possible implementation manner of the seventh aspect, the first information, the second information, and the third information are carried in a first system information block SIB.

[0085] In a possible implementation of the seventh aspect, the transceiver unit is also used to receive SIB1, which includes scheduling information of the first SIB or the SIB1 includes scheduling information of the system message where the first SIB is located; the transceiver unit is used to receive the first information, the second information and the third information, including: the transceiver unit is specifically used to receive the first information, the second information and the third information according to the scheduling information of the first SIB.

[0086] In a possible implementation manner of the seventh aspect, the first SIB is SIB3 or SIB4 or SIB5.

[0087] In a possible implementation manner of the seventh aspect, the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB; or, the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB.

[0088] In a possible implementation of the seventh aspect, the transceiver unit is also used to receive SIB1, which includes scheduling information of the second SIB and scheduling information of the third SIB, or the SIB1 includes scheduling information of the system message where the second SIB is located and scheduling information of the system message where the third SIB is located; when the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the transceiver unit is used to receive the first information, the second information and the third information, including: the transceiver unit is specifically used to receive the first information and the third information based on the scheduling information of the second SIB, and to receive the second information based on the scheduling information of the third SIB; when the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the transceiver unit is used to receive the first information, the second information and the third information, including: the transceiver unit is specifically used to receive the first information based on the scheduling information of the second SIB, and to receive the second information and the third information based on the scheduling information of the third SIB.

[0089] In a possible implementation manner of the seventh aspect, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0090] In a possible implementation manner of the seventh aspect, the third information includes at least one of the following:

[0091] An identifier of the first NTN parameter information;

[0092] An identifier of the first NTN carrier frequency information;

[0093] Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to the positions of the N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

[0094] In a possible implementation manner of the seventh aspect, the first information further includes second NTN carrier frequency information, and the second NTN carrier frequency information corresponds to the first NTN parameter information.

[0095] In a possible implementation manner of the seventh aspect, the transceiver unit is further used to send access information to the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information; and / or, the transceiver unit is further used to send a measurement result, which is obtained by measuring a signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

[0096] In a possible implementation manner of the seventh aspect, the first NTN parameter information includes at least one of the following: ephemeris information, public timing advance TA parameter, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink DL polarization indication information, uplink UL polarization indication information, and TA report enable information.

[0097] In a possible implementation manner of the seventh aspect, the first information, the second information, and the third information are carried in the same unicast message, or the first information, the second information, and the third information are carried in at least two different unicast messages.

[0098] In an eighth aspect of the present application, a communication device is provided, which can implement the method in the second aspect and any implementation thereof. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a network device, or the device can be a component in the network device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the network device functions.

[0099] The device includes a processing unit and a transceiver unit; the processing unit is used to determine the first information, the second information and the third information; the transceiver unit is used to send the first information, the second information and the third information through the TN cell; the first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0100] In a possible implementation manner of the eighth aspect, the first information, the second information, and the third information are carried in a first system information block SIB.

[0101] In a possible implementation of the eighth aspect, the transceiver unit is also used to send SIB1, which includes scheduling information of the first SIB or the SIB1 includes scheduling information of the system message where the first SIB is located; the transceiver unit is used to send the first information, the second information and the third information, including: the transceiver unit is specifically used to send the first information, the second information and the third information based on the scheduling information of the first SIB.

[0102] In a possible implementation manner of the eighth aspect, the first SIB is SIB3 or SIB4 or SIB5.

[0103] In a possible implementation manner of the eighth aspect, the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB; or, the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB.

[0104] In a possible implementation of the eighth aspect, the transceiver unit is also used to send SIB1, which includes scheduling information of the second SIB and scheduling information of the third SIB, or the SIB1 includes scheduling information of the system message where the second SIB is located and scheduling information of the system message where the third SIB is located; when the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the transceiver unit is used to send the first information, the second information and the third information, including: the transceiver unit is specifically used to send the first information and the third information based on the scheduling information of the second SIB, and send the second information based on the scheduling information of the third SIB; when the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the transceiver unit is used to send the first information, the second information and the third information, including: the transceiver unit is specifically used to send the first information based on the scheduling information of the second SIB, and send the second information and the third information based on the scheduling information of the third SIB.

[0105] In a possible implementation manner of the eighth aspect, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0106] In a possible implementation manner of the eighth aspect, the third information includes at least one of the following:

[0107] An identifier of the first NTN parameter information;

[0108] An identifier of the first NTN carrier frequency information;

[0109] Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to the positions of the N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

[0110] In a possible implementation manner of the eighth aspect, the first information further includes second NTN carrier frequency information, and the second NTN carrier frequency information corresponds to the first NTN parameter information.

[0111] In a possible implementation manner of the eighth aspect, the transceiver unit is further configured to receive a measurement result, where the measurement result is obtained by measuring a signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

[0112] In a possible implementation manner of the eighth aspect, the first NTN parameter information includes at least one of the following: ephemeris information, public timing advance TA parameter, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink DL polarization indication information, uplink UL polarization indication information, and TA report enable information.

[0113] In a possible implementation manner of the eighth aspect, the first information, the second information, and the third information are carried in the same unicast message, or the first information, the second information, and the third information are carried in at least two different unicast messages.

[0114] In a ninth aspect of the present application, a communication device is provided, which can implement the method in the third aspect and any of its implementations. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device, or the device can be a component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0115] The device includes a transceiver unit and a processing unit, the transceiver unit is used to receive SIB1 from a TN cell, the SIB1 includes scheduling information of a first SIB; the processing unit is used to receive first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0116] The tenth aspect of the present application provides a communication device, which can implement the method in the fourth aspect and any implementation thereof. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device, or the device can be a component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0117] The device includes a transceiver unit and a processing unit, the transceiver unit is used to send SIB1 through a TN cell, the SIB1 includes scheduling information of a first SIB; the processing unit is used to send first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0118] In the eleventh aspect of the present application, a communication device is provided, which can implement the method in the fifth aspect and any implementation thereof. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device, or the device can be a component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0119] The device includes a transceiver unit and a processing unit, the transceiver unit is used to receive SIB1 from a TN cell, the SIB1 includes scheduling information of a second SIB and scheduling information of a third SIB; the processing unit is used to receive first information based on the scheduling information of the second SIB, the first information includes first NTN carrier frequency information; the processing unit is also used to receive second information based on the scheduling information of the third SIB, the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0120] The twelfth aspect of the present application provides a communication device, which can implement the method in the sixth aspect and any implementation thereof. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device, or the device can be a component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0121] The device includes a transceiver unit and a processing unit, the transceiver unit is used to send SIB1 through the TN cell, the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; the processing unit is used to send first information based on the scheduling information of the second SIB, the first information includes first NTN carrier frequency information; the processing unit is also used to send second information based on the scheduling information of the third SIB, the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0122] A thirteenth aspect of the present application provides a communication device, comprising at least one processor, which is used to execute programs or instructions in a memory so that the device can implement the method described in any possible implementation method of any aspect of the first to sixth aspects.

[0123] Optionally, the communication device also includes the memory.

[0124] In a fourteenth aspect, the present application provides a communication device, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method described in any possible implementation method of any aspect of the first to sixth aspects.

[0125] A fifteenth aspect of the present application provides a communication device, comprising at least one processor and a communication interface; the at least one processor is used to execute the method described in any possible implementation method of any aspect of the first to sixth aspects.

[0126] Optionally, the communication device also includes a memory.

[0127] In the sixteenth aspect of the present application, a computer-readable storage medium is provided, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in any possible implementation of any aspect of the first to sixth aspects above.

[0128] The seventeenth aspect of the present application provides a computer program product (or computer program). When the computer program in the computer program product is executed by the processor, the processor executes the method described in any possible implementation of any one of the first to sixth aspects above.

[0129] In an eighteenth aspect, the present application provides a chip system, which includes at least one processor for supporting a communication device to implement the functions involved in any possible implementation method of any one of the first to sixth aspects.

[0130] In a possible design, the chip system may also include a memory for storing program instructions and data necessary for the first communication device. The chip system may be composed of a chip, or may include a chip and other discrete devices. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data for the at least one processor.

[0131] The nineteenth aspect of the present application provides a communication system, which includes the terminal device in any of the above aspects and any possible implementation methods, and the network device in any of the above aspects and any possible implementation methods (the network device includes a TN cell, for example, the network device can be a ground base station).

[0132] Optionally, the communication system further includes a network device where the NTN cell is located, for example, the network device may be a satellite.

[0133] Among them, the technical effects brought about by any design method in the seventh to nineteenth aspects can refer to the technical effects brought about by the above-mentioned first to second aspects and their different design methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0134] Figure 1 A schematic diagram of a communication system provided for this application;

[0135] Figure 2a A schematic diagram of the satellite communication process in the transparent transmission mode provided by the present application;

[0136] Figure 2b Another schematic diagram of the satellite communication process in the transparent transmission mode provided by the present application;

[0137] Figure 2c A schematic diagram of the satellite communication process in the regeneration mode provided by the present application;

[0138] Figure 2d Another schematic diagram of the satellite communication process in the regeneration mode provided by the present application;

[0139] Figure 2e A schematic diagram of the satellite communication process in the 5G system provided by this application;

[0140] Figure 3 A schematic diagram of the communication method provided by the present application;

[0141] Figure 4a A schematic diagram of the information carrying method provided for this application;

[0142] Figure 4b A schematic diagram of the information carrying method provided for this application;

[0143] Figure 4c A schematic diagram of the information carrying method provided for this application;

[0144] Figure 4d A schematic diagram of the information carrying method provided for this application;

[0145] Figure 4e A schematic diagram of the information carrying method provided for this application;

[0146] Figure 4f A schematic diagram of the information carrying method provided for this application;

[0147] Figure 4g A schematic diagram of the information carrying method provided for this application;

[0148] Figure 4h A schematic diagram of the information carrying method provided for this application;

[0149] Figure 5 Another schematic diagram of the communication method provided by the present application;

[0150] Figure 6 Another schematic diagram of the communication method provided by the present application;

[0151] Figure 7 A schematic diagram of a communication device provided for this application;

[0152] Figure 8 Another schematic diagram of a communication device provided by the present application;

[0153] Fig. 9 Another schematic diagram of a communication device provided by the present application;

[0154] Fig.10 Another schematic diagram of a communication device provided by the present application. DETAILED DESCRIPTION

[0155] First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0156] (1) Terminal device: It can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to users, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem.

[0157] The terminal device may be any communication kit (the kit may include, for example, an antenna, a power supply template, a cable, and a Wi-Fi module) with wireless communication functions. The terminal device may also be a communication module with satellite communication functions, a satellite phone or its components, or a very small aperture terminal (VSAT). The terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone, mobile phone), a computer, and a data card. For example, it may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablet computers, computers with wireless transceiver functions, and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), a drone, etc. The terminal device may also be a wearable device and a next generation communication system, for example, a terminal device in a 6G communication system or a terminal device in a future evolved public land mobile network (PLMN), etc. Of course, the terminal device in the present application may also refer to a chip, a modem, a system on a chip (SoC) or a communication platform that may include a radio frequency (RF) part, etc., which is mainly responsible for the relevant communication functions in the device.

[0158] (2) Network equipment: It can be equipment in a wireless network, for example, a network equipment can be a radio access network (RAN) node (or equipment) that connects a terminal device to a wireless network, and can also be called a base station. At present, some examples of RAN equipment are: a new generation of base stations in future communication systems, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a base band unit (BBU), or a wireless fidelity (Wi-Fi) access point (AP). In addition, in a network structure, a network equipment can include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0159] In some implementations, the network equipment may also include satellites, aircraft, drones, and ground station equipment connected to the satellites, aircraft, and drones.

[0160] Among them, the network device can send configuration information to the terminal device (for example, carried in a scheduling message and / or an indication message), and the terminal device further performs network configuration according to the configuration information, so that the network configuration between the network device and the terminal device is aligned; or, through the network configuration preset in the network device and the network configuration preset in the terminal device, the network configuration between the network device and the terminal device is aligned. Specifically, "alignment" means that when there is an interactive message between the network device and the terminal device, the two have a consistent understanding of the carrier frequency for sending and receiving the interactive message, the determination of the interactive message type, the meaning of the field information carried in the interactive message, or other configurations of the interactive message.

[0161] In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form used by the network device. For the convenience of description, the embodiments of the present application do not limit.

[0162] In the embodiment of the present application, the device for realizing the function of the network device may be a network device, or may be a device capable of supporting the network device to realize the function, such as a chip system, which may be installed in the network device. In the technical solution provided in the embodiment of the present application, the technical solution provided in the embodiment of the present application is described by taking the device for realizing the function of the network device as an example that the network device is used as the device.

[0163] (3) Configuration and pre-configuration: In this application, configuration and pre-configuration are used at the same time. Configuration refers to the network device sending some parameter configuration information or parameter values ​​to the terminal device through messages or signaling, so that the terminal device can determine the communication parameters or resources during transmission based on these values ​​or information. Pre-configuration is similar to configuration, and can be parameter information or parameter values ​​pre-negotiated between the network device and the terminal device, or parameter information or parameter values ​​used by the network device or terminal device as specified by the standard protocol, or parameter information or parameter values ​​pre-stored in the network device or terminal device. This application does not limit this.

[0164] Furthermore, these values ​​and parameters can be changed or updated.

[0165] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated with each other are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0166] (5) "Send" and "receive" in the embodiments of the present application indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information is XX, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information is YY, which can include direct receiving from YY through the air interface, and also include indirect receiving from YY through the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0167] In other words, sending and receiving can be performed between devices, for example, between a network device and a terminal device, or can be performed within a device, for example, sending or receiving between components, modules, chips, software modules, or hardware modules within the device through a bus, wiring, or interface.

[0168] It is understandable that information may be processed between the source and destination of information transmission, such as coding, modulation, etc., but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated.

[0169] (6) In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (such as the indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated may also be indirectly indicated by indicating other information, wherein the other information is associated with the information to be indicated; or only a part of the information to be indicated may be indicated, while the other part of the information to be indicated is known or agreed in advance. For example, the indication of specific information may be realized by means of the arrangement order of each information agreed in advance (such as predefined by the protocol), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific method of indication. It is understandable that, for the sender of the indication information, the indication information may be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information may be used to determine the information to be indicated.

[0170] In this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In the various embodiments in this application, and the various methods / designs / implementations in each embodiment, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments and the various methods / designs / implementations in each embodiment are consistent and can be referenced to each other. The technical features in different embodiments and the various methods / designs / implementations in each embodiment can be combined to form new embodiments, methods, or implementations according to their inherent logical relationships. The implementation methods of this application described below do not constitute a limitation on the scope of protection of this application.

[0171] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a new wireless vehicle to everything (NR V2X) system; it can also be applied to a system in which LTE and 5G are hybrid networks; or a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), or a drone communication system; or a communication system that supports multiple wireless technologies, such as LTE technology and NR technology; or a non-ground communication system, such as a satellite communication system, a high-altitude communication platform, etc. Alternatively, the communication system may also be applicable to narrowband Internet of Things (NB-IoT), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), and future-oriented communication technologies. Or other communication systems, wherein the communication system includes network equipment and terminal equipment, the network equipment serves as a configuration information sending entity, and the terminal equipment serves as a configuration information receiving entity. Specifically, in the communication system, there is an entity that sends configuration information to another entity, and sends data to another entity, or receives data sent by another entity; another entity receives configuration information, and sends data to the configuration information sending entity according to the configuration information, or receives data sent by the configuration information sending entity. Among them, the present application can be applied to a terminal device in a connected state or an activated state (active), and can also be applied to a terminal device in a non-connected state (inactive) or an idle state (idle).

[0172] See also Figure 1 , is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1As shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), may also include at least one terminal (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 (not shown in the figure). The terminal 120 is connected to the RAN node 110 by wireless means, and the RAN node 110 is connected to the core network 200 by wireless or wired means. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or may be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. Terminals and terminals and RAN nodes and RAN nodes may be connected to each other by wired or wireless means.

[0173] It should be noted that the technical solution of the embodiment of the present application is applicable to a communication system that integrates ground communication and satellite communication, which can also be called a non-terrestrial network (NTN) communication system. In other words, Figure 1 The RAN 100 may include a ground base station, wherein the ground base station may include a TN cell (ie, a signal of the TN cell may be sent and received through the ground base station); and Figure 1 The RAN100 in the embodiment may also include a non-terrestrial base station. For example, if the non-terrestrial base station is a satellite, the satellite may include an NTN cell (i.e., the signal of the NTN cell may be transmitted and received by the satellite). The terrestrial communication system may be, for example, a long term evolution (LTE) system, a universal mobile telecommunication system (UMTS), a 5G communication system or a new radio (NR) system, or a communication system developed next to the 5G communication system, which is not limited here.

[0174] Among them, satellite communication has a wider coverage range compared to traditional mobile communication systems, and the communication cost is independent of the transmission distance. It can overcome natural geographical obstacles such as oceans, deserts, and mountains. In order to overcome the shortcomings of traditional communication networks, satellite communication can be used as an effective supplement to traditional networks. It is generally believed that non-terrestrial network communications have different channel characteristics compared with terrestrial network communications, such as large transmission delays and large Doppler frequency deviations. Exemplarily, the round-trip delay of GEO satellite communication is 238 to 270 milliseconds (ms). The round-trip delay of LEO satellite communication is 8ms to 20ms. According to the different orbital altitudes, satellite communication systems can be divided into the following three types: high orbit (geostationary earth orbit, GEO) satellite communication system, also known as synchronous orbit satellite system; medium orbit (medium earth orbit, MEO) satellite communication system and low orbit (low earth orbit, LEO) satellite communication system.

[0175] Among them, GEO satellites are generally called geostationary orbit satellites, and their orbital altitude can be 35786 kilometers (km). Their main advantages are that they are stationary relative to the ground and provide a large coverage area. However, due to the relatively prominent disadvantages of GEO satellite orbit satellites: for example, the distance from the earth is too large, requiring a larger diameter antenna; its transmission delay is large, about 0.5 seconds, which cannot meet the needs of real-time services; at the same time, its orbital resources are relatively tight, the launch cost is high, and it cannot provide coverage for the polar regions. MEO satellites, with an orbital altitude of 2000 to 35786 km, can achieve global coverage with a relatively small number of satellites, but its transmission delay is higher than that of LEO satellites, and it is mainly used for positioning and navigation. In addition, satellites with an orbital altitude of 300 to 2000 km are called low-orbit satellites (LEO). LEO satellites are lower than MEO and GEO orbital altitudes, with small data transmission delays, smaller power losses, and relatively lower launch costs. Therefore, LEO satellite communication networks have made great progress in recent years and have attracted attention.

[0176] In a possible implementation, the satellite device can be divided into a transparent mode and a regenerative mode according to the working mode.

[0177] The following will be Figure 2a , Figure 2b , Figure 2c and Figure 2d The implementation shown is an exemplary illustration of these two modes.

[0178] like Figure 2a In the implementation of the transparent transmission mode shown in FIG. Figure 2a The NTN Gateway in the Figure 2a The Remote Radio Unit (RRU) shown in the figure is a relay process that is required for communication between the terminal device and the gNB. In other words, in the transparent transmission mode, the satellite has the function of relaying.

[0179] For example, in Figure 2b In the implementation of the transparent transmission mode shown in the figure, when the satellite (including GEO satellite, MEO satellite, LEO satellite, etc.) works in the transparent transmission mode, the satellite has the function of relaying. The gateway station has the function of a base station or part of the base station function, and the gateway station can be regarded as a base station. Alternatively, the base station can be deployed separately from the gateway station, and the delay of the feeder link includes the delay from the satellite to the gateway station and the delay from the gateway station to the gNB.

[0180] Optionally, the transparent transmission mode can be based on the case where the gateway station and the gNB are together or located close to each other. For the case where the gateway station and the gNB are far apart, the feeder link delay can be the sum of the delays from the satellite to the gateway station and from the gateway station to the gNB.

[0181] like Figure 2c In the implementation of the regeneration mode shown, the satellite and the gateway station (i.e. Figure 2c The NTN Gateway in the satellite is used as a gNB to communicate with the terminal device. In other words, in the regeneration mode, the satellite has the function of a base station or part of the base station function, and the satellite can be regarded as a base station.

[0182] For example, in Figure 2d In the implementation of the regeneration mode shown in FIG. 1 , when the satellite (including GEO satellite, MEO satellite, LEO satellite, etc.) works in the regeneration mode, compared with Figure 2b In the implementation shown, the satellite has the function of a base station or part of the function of a base station, and the satellite can be regarded as a base station.

[0183] It should be noted that the base stations of NTN and ground network can be interconnected through a common core network. It is also possible to achieve more timely assistance and interconnection through the interface defined between base stations. In NR, the interface between base stations is called Xn interface, and the interface between base stations and core network is called NG interface. NTN nodes and ground nodes in the converged network can achieve intercommunication and collaboration through the aforementioned interface.

[0184] In addition, the satellite as a network device can send ephemeris information so that the receiver of the ephemeris information (such as a terminal device or its base station or other satellite, etc.) can determine the relevant information of the satellite's orbit based on the ephemeris information. As an implementation example, the ephemeris information can include one or more of the information in Table 1 below. Alternatively, the terminal device can obtain one or more of the information in Table 1 in a preconfigured manner.

[0185] Table 1

[0186]

[0187] It should be noted that in practical applications, the last parameter in Table 1 can be replaced by the time of approach to the Earth, t p Replacing it with the true anomaly expression has the same effect, as shown in Table 2.

[0188] Table 2

[0189]

[0190] It should be noted that the present application can be applied to the long term evolution (LTE) system, the new radio (NR) system, or the communication system evolved after 5G (such as 6G, 7G, etc.). Taking 5G as an example, a 5G satellite communication system architecture is as follows: Figure 2e As shown in the figure, ground terminal equipment accesses the network through the 5G new air interface, and the 5G base station is deployed on the satellite and connected to the ground core network through a wireless link. At the same time, there is a wireless link between satellites to complete the signaling interaction and user data transmission between base stations. Figure 2e The devices and interfaces in the are described as follows:

[0191] 5G core network: user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into functional entities of the control plane and the data plane. The access and mobility management function (AMF) is responsible for user access management, security authentication, and mobility management. The user plane function (UPF) is responsible for managing the transmission of user plane data, traffic statistics and other functions. The session management function (SMF) is mainly used for session management in mobile networks, such as session establishment, modification, and release.

[0192] Ground station: responsible for forwarding signaling and business data between satellite base stations and 5G core network.

[0193] 5G New Air Interface: The wireless link between the terminal and the base station.

[0194] Xn interface: The interface between 5G base stations, mainly used for signaling interactions such as switching.

[0195] NG interface: The interface between the 5G base station and the 5G core network, which mainly interacts with the core network's non-access stratum (NAS) signaling and user service data.

[0196] In addition, the network devices in the ground network communication system and the satellites in the NTN communication system can be uniformly regarded as network devices. The device for realizing the function of the network device can be a network device; it can also be a device that can support the network device to realize the function, such as a chip system, which can be installed in the network device. When describing the technical solution provided by the embodiment of the present application below, the technical solution provided by the embodiment of the present application is described by taking the device for realizing the function of the network device as a satellite as an example. It can be understood that when the method provided by the embodiment of the present application is applied to the ground network communication system, the actions performed by the satellite can be applied to the base station or network device for execution.

[0197] In the embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, the technical solution provided in the embodiment of the present application is described by taking the device for realizing the function of the terminal device as a terminal or UE as an example.

[0198] In addition, the above-mentioned satellites may be geostationary satellites, non-geostationary satellites, artificial satellites, low-orbit satellites, medium-orbit satellites, and high-orbit satellites, etc., which are not specifically limited in the present application.

[0199] The above content introduces various scenarios of wireless communication involved in this application. It should be understood that the above content is only an exemplary description of the scenarios to which this application can be applied. This application can also be applied to other application scenarios, which are not limited here. The wireless communication process involved in this application will be introduced below.

[0200] exist Figure 1 / Figure 2a / Figure 2b / Figure 2c / Figure 2d / Figure 2e In the communication system shown, the signal that the network device can send (for example, the signal carries configuration information / configuration signaling, etc.) can configure communication resources. The communication resources may include the communication resources of the network device and the communication resources of the adjacent network devices that may exist, so that the receiver of the signal can determine the corresponding communication resources based on the signal. For example, when the receiver of the signal is a terminal device, the terminal device can obtain network services based on the communication resources.

[0201] In addition, as we can see from the content of the NTN communication process above, with the development of communication technology, network equipment can be fixed somewhere on the ground, such as the ground base station to which the TN cell belongs; network equipment can also be not fixed somewhere on the ground, such as Figure 2a / Figure 2b / Figure 2c / Figure 2d / Figure 2e In the communication system shown, the network device may be a high-speed mobile device belonging to the NTN cell, such as satellite devices such as low-orbit satellites, medium-orbit satellites, and high-orbit satellites. Unlike the ground base station to which the TN cell belongs, the satellite device to which the NTN cell belongs moves at a high speed, which results in the terminal device needing to obtain NTN parameter information (for example, the NTN parameter information may include the ephemeris information shown in Table 1 or Table 2 above) before communicating with the NTN cell, such as performing cell measurement on the NTN cell, executing cell switching to the NTN cell, and staying in the NTN cell. Generally, the terminal device can obtain the NTN parameter information through the information broadcast by the NTN cell (for example, SIB19).

[0202] However, in the above implementation process, the terminal device needs to be within the coverage of the NTN cell to obtain the NTN parameter information. This approach will increase the communication delay between the terminal device and the NTN cell, thereby affecting the communication efficiency.

[0203] In order to solve the above problems, the present application provides a communication method and related equipment, which are used to reduce the delay of communication between a terminal device and an NTN cell to improve communication efficiency.

[0204] See also Figure 3 , is a schematic diagram of an implementation of the communication method provided in this application, and the method includes the following steps.

[0205] It should be noted that Figure 3 In the example, the terminal device and the network device are used as the execution subjects of the interaction diagram to illustrate the method, but the present application does not limit the execution subjects of the interaction diagram. Figure 3 In the corresponding implementation method, the implementation process of step S301-step S303 can be executed by the terminal device, or by a chip, chip system, or processor that supports the terminal device to implement the method, or by a logic module or software that can implement all or part of the terminal device functions. Figure 3 In the corresponding implementation method, the implementation process of step S301-step S303 can be executed by the network device, or by a chip, chip system, or processor that supports the network device to implement the method, or by a logic module or software that can implement all or part of the network device functions.

[0206] Similarly, the following Figure 5 and Figure 6 In the method shown, the implementation process of each step can be executed by the terminal device (and / or network device), or by a chip, chip system, or processor that supports the terminal device (and / or network device) to implement the method, or by a logic module or software that can implement all or part of the functions of the terminal device (and / or network device).

[0207] S301. A network device sends first information, and correspondingly, a terminal device receives the first information, wherein the first information includes first NTN carrier frequency information.

[0208] S302. The network device sends second information, and correspondingly, the network device receives the second information, wherein the second information includes the first NTN parameter information.

[0209] S302. The network device sends third information, and correspondingly, the network device receives the third information, wherein the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0210] It should be understood that the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information. It can be understood that the receiver of the third information (e.g., terminal equipment) can determine that the first NTN carrier frequency information corresponds to the first NTN parameter information based on the third information, that is, determine that the cell indicated by the first NTN carrier frequency information can be accessed based on the first NTN parameter information, and / or determine that the first NTN parameter information is used to access the cell indicated by the first NTN carrier frequency information. In other words, the third information can also be expressed as: the third information can be used to indicate that the first NTN parameter information corresponds to the first NTN carrier frequency information.

[0211] It should be noted that the first information in step S301, the second information in step S302 and the third information in step S303, these three information can be carried in the same message / information, these three information can also be carried in two different messages / information, or these three information can also be carried in different messages / information, see the description of the embodiments below for details.

[0212] In addition, the first information, the second information and the third information are all from the TN cell, that is, the execution Figure 3 The network device of the method shown may include (deploy / generate, etc.) the TN cell, that is, the network device may send the first information, the second information and the third information through the TN cell.

[0213] In the present application, the NTN carrier frequency information received by the terminal device (for example, the first NTN carrier frequency information included in the first information received by the terminal device in step S301, or the second NTN carrier frequency information described later) may include at least one of the following information related to the carrier frequency:

[0214] Public land mobile network (PLMN) identification or index, cell identification or index, cell frequency information, cell band information, cell reselection priority information, access permission identification information (the information indicates whether the terminal is allowed to access the cell), average synchronization signal / physical broadcast channel block (SS / PBCH block or SSB) number used for cell measurement derivation, SSB subcarrier spacing, SSB-based measurement timing configuration (SMTC) configuration information (i.e., measurement timing configuration for NTN cell measurement, through which the terminal device can accurately measure the NTN cell), threshold information of signal strength and / or quality related to cell reselection (if the signal strength and / or quality of the NTN cell measured by the terminal is greater than the threshold, the terminal reselects to the NTN cell), time information related to cell reselection (the information can also be used in combination with the above-mentioned signal strength and / or quality threshold information, if the signal strength and / or quality of the NTN cell measured by the terminal is continuously greater than the threshold within the time range indicated by the time information, the terminal reselects to the NTN cell).

[0215] In the present application, the NTN parameter information (for example, the first NTN parameter information included in the second information received by the terminal device in step S302, and other NTN parameter information that may exist) includes at least one of the following: ephemeris information, common timing advance (TA) parameters, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink (DL) polarization indication information, uplink (UL) polarization indication information, and TA report enable information.

[0216] Exemplarily, the ephemeris information may provide satellite ephemeris, and the terminal device may obtain and / or predict the position of the satellite through the satellite ephemeris; the public TA parameter may be a public timing advance value controlled by the network, and the terminal device may obtain the public timing advance TA value through the parameter information, and the parameter information may also include the public timing advance value, the public timing advance value drift rate, and the public timing advance value drift rate variation, and the terminal device may predict and estimate the future and past public timing advance values ​​through the parameter information; the start time (epoch time) parameter information indicates the start time of the NTN parameter information; the synchronization effective time parameter information indicates the effective duration of the NTN parameter information, and during the effective duration (from the start time epoch time starts), the terminal device can apply the NTN parameter information without obtaining new NTN parameter information; the kmac parameter information refers to the scheduling offset provided by the network when the downlink and uplink frame timings are not aligned in the network device (such as gNB), and the value can be 0; the DL polarization indication information is used to indicate the polarization mode of the downlink service link, and the polarization mode can be right-hand circular polarization, left-hand circular polarization, linear polarization, etc.; the UL polarization indication information is used to indicate the polarization mode of the uplink service link, and the polarization mode can be right-hand circular polarization, left-hand circular polarization, linear polarization, etc.; if the TA report enable information exists, the terminal device performs TA reporting during or after the random access process.

[0217] In a possible implementation manner, the third information received by the terminal device in step S303 includes at least one of the following:

[0218] Information A: an identifier (or index, the identifier is used as an example for description below) of the first NTN parameter information.

[0219] Information B: an identifier (or index, the identifier is used as an example for description below) of the first NTN carrier frequency information.

[0220] Information C. bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to the positions of the N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

[0221] Optionally, when the value of N is greater than 1, for information C, when N is greater than 1, the N NTN parameter information may include other NTN parameter information in addition to the first NTN parameter information, such as the second NTN parameter information, the third NTN parameter information, etc. In one possible manner, the leftmost bit or the first bit in the bitmap information may correspond to the first NTN parameter information, the second bit may correspond to the second NTN parameter information, and so on. In addition, the first NTN parameter information may be the first NTN parameter information among the N NTN parameter information included in the second information, the second NTN parameter information may be the second NTN parameter information among the N NTN parameter information included in the second information, and so on.

[0222] It should be noted that the first information received by the terminal device in step S301 may include K (K is a positive integer) pieces of NTN carrier frequency information, and the K pieces of NTN carrier frequency information include at least the first NTN carrier frequency information, and may optionally include other NTN carrier frequency information, such as the second NTN carrier frequency information, the third NTN carrier frequency information, etc. Similarly, the second information received by the terminal device in step S302 may include N pieces of NTN parameter information, and the N pieces of NTN parameter information include at least the first NTN parameter information, and may optionally include other NTN parameter information, such as the second NTN parameter information, the third NTN parameter information, etc.

[0223] Optionally, there is no restriction on the values ​​of K and N. For example, K is greater than or equal to N, or K is less than N.

[0224] In order to facilitate understanding of the above technical solution, the implementation process of the above information A to information C is described below by taking the value of K as 3 and the value of N as 2 as an example. It should be understood that in the following example, among the K (K=3) NTN carrier frequency information, the first NTN carrier frequency information is recorded as NTN carrier frequency information 1, the second NTN carrier frequency information is recorded as NTN carrier frequency information 2, and the third NTN carrier frequency information is recorded as NTN carrier frequency information 3; among the N (N=2) NTN parameter information, the first NTN parameter information is recorded as NTN parameter information 1, and the second NTN parameter information is recorded as NTN parameter information 2.

[0225] As an implementation example, when the third information includes information A, such as Figure 4a As shown, the third information may include K identifiers, and the K identifiers are used to indicate the identifiers of the NTN parameter information, including the identifier of the NTN parameter information 1 and the identifier of the NTN parameter information 2. Figure 4aIn the figure, NTN carrier frequency information 1 corresponds to the identifier of NTN parameter information 1, that is, the terminal device can access the NTN cell indicated by NTN carrier frequency information 1 based on NTN parameter information 1. Similarly, for the other two "correspondences", it can be understood that: the terminal device can access the NTN cell indicated by NTN carrier frequency information 2 based on NTN parameter information 1, and the terminal device can access the NTN cell indicated by NTN carrier frequency information 3 based on NTN parameter information 2.

[0226] Optionally, in Figure 4a In the embodiment, the correspondence between the K carrier frequency information included in the first information and the K identifiers included in the third information (such as the three "correspondences" shown in the figure) can be determined by pre-configuration. For example, the terminal device can determine by pre-configuration that the i-th one of the K carrier frequency information corresponds to the i-th one of the K identifiers, and the value of i ranges from 1 to K.

[0227] Optionally, when the third information includes information A, Figure 4b As shown, the third information may be located inside the first information, that is, after the terminal device receives the first information in step S301, it does not need to perform the process of receiving again in step S303, but parses the first information received in step S301 to obtain the third information. Similarly, the correspondence between the K NTN carrier frequency information and the K identifiers may also be determined by preconfiguration.

[0228] As another implementation example, when the third information includes information B, such as Figure 4c As shown, the third information may include N identifications, and the N identifications are used to indicate the identifications of the NTN carrier frequency information, including the identification of the NTN carrier frequency information 1 and the identification of the NTN carrier frequency information 2. Figure 4c In the figure, the identifier of NTN carrier frequency information 1 and the identifier of NTN carrier frequency information 2 correspond to NTN parameter information 1, that is, the terminal device can access the NTN cell indicated by NTN carrier frequency information 1 and NTN carrier frequency information 2 based on NTN parameter information 1. Similarly, for the other two "correspondences", it can be understood that the terminal device can access the NTN cell indicated by NTN carrier frequency information 3 based on NTN parameter information 2.

[0229] Optionally, in Figure 4c In the embodiment, the correspondence between the N NTN parameter information included in the second information and the N identifications included in the third information (such as the two "correspondences" shown in the figure) can be determined by pre-configuration. For example, the terminal device can determine by pre-configuration that the i-th of the N NTN parameter information corresponds to the i-th of the N identifications, and the value of i ranges from 1 to K.

[0230] Optionally, when the third information includes information B, Figure 4d As shown, the third information can be located inside the second information, that is, after the terminal device receives the second information in step S302, it does not need to perform the receiving process again in step S303, but parses the second information received in step S302 to obtain the third information. Similarly, the correspondence between the N NTN parameter information and the N identifications can also be determined by pre-configuration.

[0231] As another implementation example, when the third information includes information C, Figure 4e As shown, the third information may include K bitmap information, any one of the K bitmap information may include 2 (i.e., N is 2) bits, the NTN parameter information 1 in the second information corresponds to the left high bit of the 2 bits, and the NTN parameter information 2 in the second information corresponds to the right high bit of the 2 bits. That is, bitmap[1,0] indicates NTN parameter information 1; bitmap[0,1] indicates NTN parameter information 2. Figure 4e In the figure, NTN carrier frequency information 1 corresponds to bitmap[1,0], that is, the terminal device can access the NTN cell indicated by NTN carrier frequency information 1 based on NTN parameter information 1 indicated by bitmap[1,0]. Similarly, for the other two "correspondences", it can be understood that: the terminal device can access the NTN cell indicated by NTN carrier frequency information 2 based on NTN parameter information 1 indicated by bitmap[1,0], and the terminal device can access the NTN cell indicated by NTN carrier frequency information 3 based on NTN parameter information 2 indicated by bitmap[0,1].

[0232] Optionally, in Figure 4e In the embodiment, the correspondence between the K carrier frequency information included in the first information and the K bitmap information included in the third information (for example, the three "correspondences" shown in the figure) can be determined by pre-configuration. For example, the terminal device can determine by pre-configuration that the i-th one of the K carrier frequency information corresponds to the i-th one of the K bitmap information, and the value of i ranges from 1 to K.

[0233] Optionally, in the case where the third information includes information C, such as Figure 4f As shown, the third information may be located inside the first information, that is, after the terminal device receives the first information in step S301, it does not need to perform the process of receiving again in step S303, but parses the first information received in step S301 to obtain the third information. Similarly, the correspondence between the K NTN carrier frequency information and the K bitmap information may also be determined by preconfiguration.

[0234] As another implementation example, the third information may include two or three items of information A, information B, and information C. Figure 4g and Figure 4h , taking the example that the third information includes information A and information B as an example for exemplary description. It should be understood that the third information may include information A and information C, or the third information may include information B and information C, or the third information may include information A, information B and information C. These implementation processes may refer to Figure 4g and Figure 4h An example implementation is shown.

[0235] like Figure 4g As shown, the third information may include K (K=3) identification combinations, and the i-th identification combination includes the identification of the i-th NTN carrier frequency information in the first information, and the identification of a certain NTN parameter information in the second information. For example, the first identification combination included in the third information includes "the identification of NTN carrier frequency information 1--the identification of NTN parameter information 1", that is, the terminal device can determine that NTN parameter information 1 is used to access the NTN cell indicated by NTN carrier frequency information 1 based on the first identification combination. Similarly, for the other two identification combinations, it can be understood that: the terminal device can determine that NTN parameter information 1 is used to access the NTN cell indicated by NTN carrier frequency information 2 based on the second identification combination, and the terminal device can determine that NTN parameter information 2 is used to access the NTN cell indicated by NTN carrier frequency information 3 based on the third identification combination.

[0236] like Figure 4h As shown, the third information may include N (N=2) identification combinations, and the i-th identification combination includes the identification of the i-th NTN parameter information in the second information, and the identification of one or more NTN carrier frequency information in the i-th information. For example, the first identification combination included in the third information includes "the identification of NTN carrier frequency information 1, the identification of NTN carrier frequency information 2--the identification of NTN parameter information 1", that is, the terminal device can determine that NTN parameter information 1 is used to access the NTN cell indicated by NTN carrier frequency information 1, and the NTN cell indicated by NTN carrier frequency information 2 based on the first identification combination. Similarly, for another identification combination, it can be understood that: the terminal device can determine that NTN parameter information 2 is used to access the NTN cell indicated by NTN carrier frequency information 3 based on the second identification combination.

[0237] Similarly, in Figure 4g or Figure 4h In the implementation process, the third information can be included in the first information or the second information, that is, the terminal device does not need to perform step S303. The specific implementation process can refer to the above Figure 4b / Figure 4d / Figure 4f Related description.

[0238] In a possible implementation, the first information received by the terminal device in step S301 may also include second NTN carrier frequency information, where the second NTN carrier frequency information corresponds to the first NTN parameter information (as described above). Figure 4a to Figure 4h In the example shown, both NTN carrier frequency information 1 and NTN carrier frequency information 2 correspond to NTN parameter information 1). Specifically, in addition to the first NTN carrier frequency information, the first information may also include the second NTN carrier frequency information, and both the first NTN carrier frequency information and the second NTN carrier frequency information correspond to the first NTN parameter information (for example, the NTN cell indicated by the first NTN carrier frequency information and the NTN cell indicated by the second NTN carrier frequency information may be located on the same satellite, or may be located on different satellites with the same NTN parameter information). In other words, the terminal device can determine the NTN parameters of the NTN cell indicated by the first NTN carrier frequency information and the NTN parameters of the NTN cell indicated by the second NTN carrier frequency information based on the first NTN parameter information. In this way, compared with the way of carrying one or more NTN parameter information corresponding to one or more NTN frequency information, the signaling overhead can be reduced.

[0239] In one possible implementation, Figure 3 In the method shown, after step S301, step S302 and step S303, the method may further include: the terminal device sends access information to the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information; and / or, the terminal device sends a measurement result, which is obtained by measuring the signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information. Specifically, when the terminal device determines that the first NTN carrier frequency information corresponds to the first NTN parameter information based on the third information, the terminal device can communicate with the NTN cell indicated by the first NTN carrier frequency information.

[0240] For example, during the process of the terminal device communicating with the NTN cell, the terminal device may send access information to the NTN cell to access the NTN cell.

[0241] For another example, during the process of communication between the terminal device and the NTN cell, the terminal device can receive the signal of the NTN cell, measure the signal of the NTN cell to obtain a measurement result, and implement cell reselection based on the measurement result, or stay in the NTN cell based on the measurement result, or send the measurement result to implement cell switching, etc.

[0242] Optionally, the terminal device performs measurement of the NTN cell indicated by one or more NTN carrier frequency information (including the first NTN carrier frequency information) contained in the first information, and after obtaining one or more measurement results, the terminal device may choose to send part or all of the one or more measurement results. For example, the terminal device may send part or all of the measurement results for which the signal quality information corresponding to the one or more measurement results is greater than or equal to a threshold, and the signal quality information may include one or more of a reference signal received power (reference signal received power, RSRP) and a reference signal received quality (reference signal received quality, RSRQ).

[0243] based on Figure 3 In the technical solution shown, the terminal device receives the first information, the second information and the third information through the TN cell. The first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Thus, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and can reduce the delay of the terminal device communicating with the NTN cell to improve the communication efficiency.

[0244] In addition, the third information received by the terminal device through the TN cell is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information, which enables the terminal device to quickly determine the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information based on the indication of the third information, thereby avoiding the increase in delay caused by the terminal device performing blind detection based on the NTN carrier frequency information and the NTN parameter information, and further reducing the delay in communication between the terminal device and the NTN cell.

[0245] It should be noted that, in step S301 to step S303, the network device may send the first information, the second information, and the third information through a single sending process, that is, the first information, the second information, and the third information may be carried in the same message / same information. Alternatively, in step S301 to step S303, the network device may send the first information, the second information, and the third information through two or more sending processes, that is, the first information, the second information, and the third information may be carried in at least two messages / at least two information. This will be described below in conjunction with more implementation examples.

[0246] In implementation example 1, the first information, the second information and the third information are carried in the same broadcast message.

[0247] In implementation example 1, the same broadcast message may be a system information block (SIB), denoted as the first SIB.

[0248] Specifically, in implementation example one, the first information, second information and third information received by the terminal device can be carried in the first SIB, that is, the terminal device can obtain the first information, the second information and the third information through the same SIB, which can save overhead and enable the terminal device to quickly obtain each information through the same SIB.

[0249] In a possible implementation manner of implementation example one, the method also includes: the terminal device receives SIB1, the SIB1 includes scheduling information of the first SIB or the SIB1 includes scheduling information of the system message where the first SIB is located; the terminal device receives the first information, the second information and the third information, including: the terminal device receives the first information, the second information and the third information according to the scheduling information of the first SIB.

[0250] It should be understood that SIB1 may include scheduling information of one or more SIBs (for example, SIB2 to SIB21, and possible SIB xx is an integer greater than 21), and the scheduling information may be used to indicate the time domain resources, frequency domain resources, etc. that carry the one or more SIBs, such as the system message window length, the system message period, which SIBs or posSIBs are included in the system message, etc.

[0251] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the first SIB is different from SIB2 to SIB21. For example, the first SIB may be SIB x, where x is an integer greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the first SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0252] Optionally, the first SIB is SIB3 or SIB4 or SIB5, so that the terminal device can obtain the first information, the second information and the third information based on the receiving process of SIB3 or SIB4 or SIB5 in the current communication system, thereby reducing complexity.

[0253] In implementation example 2, the first information, the second information and the third information are carried in two or more broadcast messages.

[0254] In implementation example 2, the two broadcast messages may be two different SIBs, for example, recorded as the second SIB and the third SIB. The first information and the third information are carried in the second SIB, and the second information is carried in the third SIB; or, the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB.

[0255] Specifically, the third information can be carried in the same SIB (e.g., the second SIB) as the first information, or the third information can be carried in the same SIB (e.g., the second SIB) as the second information. In this way, when the amount of data of the NTN cell frequency information carried by the first information or the NTN parameter information carried by the second information is too large, the terminal device can obtain the first information, the second information, and the third information in two different SIBs, which can reduce the implementation complexity.

[0256] Optionally, the first information, the second information and the third information may be carried in three different SIBs.

[0257] In a possible implementation manner of implementation example 2, the method also includes: the terminal device receives SIB1, and the SIB1 includes the scheduling information of the second SIB and the scheduling information of the third SIB, or the SIB1 includes the scheduling information of the system message where the second SIB is located and the scheduling information of the system message where the third SIB is located; when the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the terminal device receives the first information, the second information and the third information, including: the terminal device receives the first information and the third information based on the scheduling information of the second SIB, and receives the second information based on the scheduling information of the third SIB; when the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the terminal device receives the first information, the second information and the third information, including: the terminal device receives the first information based on the scheduling information of the second SIB, and receives the second information and the third information based on the scheduling information of the third SIB. Specifically, the terminal device can receive the first information, the second information and the third information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information, the second information and the third information.

[0258] Optionally, SIB1 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the second SIB and the third SIB may be different from SIB2 to SIB21, for example, the second SIB may be SIBx, and the third SIB may be SIB y, where x and y are both integers greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the second SIB and the third SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x and SIB y, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0259] Optionally, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0260] Optionally, the third SIB may be SIB19, so that the terminal device can obtain the first information, the second information and the third information based on the SIB19 receiving process in the current communication system, thereby reducing complexity.

[0261] In implementation example three, the first information, the second information and the third information are carried in a unicast message (eg, a radio resource control (RRC) message).

[0262] In implementation example three, the first information, the second information and the third information are carried in the same unicast message, or the first information, the second information and the third information are carried in at least two different unicast messages.

[0263] Specifically, in addition to being carried in the SIB transmitted in a broadcast manner, the first information, the second information and the third information may also be carried in one or more unicast messages sent by the TN cell to the terminal device. In this way, the terminal device can obtain relevant information of the NTN cell (including NTN carrier frequency information and NTN parameter information, etc.) based on the unicast scheduling of the TN cell, and can subsequently further communicate with the NTN cell based on the relevant information of the NTN cell.

[0264] As described above, in the current communication network, the terminal device needs to be within the coverage of the NTN cell to obtain the NTN parameter information, which will increase the communication delay between the terminal device and the NTN cell, thereby affecting the communication efficiency. More embodiments will be provided below to solve this problem.

[0265] like Figure 5As shown, it is another schematic diagram of the communication method provided by the present application, and the method includes the following steps.

[0266] S501. The network device sends SIB1, and correspondingly, the terminal device receives the SIB1. The SIB1 comes from a TN cell in the network device, and the SIB1 includes scheduling information of a first SIB.

[0267] S502. The network device sends the first information and the second information based on the scheduling information of the first SIB, and correspondingly, the terminal device receives the first information and the second information based on the scheduling information of the first SIB. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information, and the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0268] based on Figure 5 In the technical solution shown, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Thus, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, which can reduce the delay of the terminal device communicating with the NTN cell, thereby improving the communication efficiency.

[0269] In addition, the terminal device can receive the first information and the second information based on the scheduling information of the first SIB contained in SIB1, so that the terminal device can accurately receive the first SIB, and then obtain the first information and the second information. Moreover, the first information and the second information received by the terminal device can be carried in the first SIB, that is, the terminal device can obtain the first information and the second information through the same SIB, which can save overhead and enable the terminal device to quickly obtain various information through the same SIB.

[0270] Optionally, the SIB1 received by the terminal device in step S501 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the first SIB is different from SIB2 to SIB21. For example, the first SIB may be SIBx, where x is an integer greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the first SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0271] Optionally, the first SIB is SIB3 or SIB4 or SIB5.

[0272] It should be understood that the implementation process of the first information, the second information, and the first SIB can refer to the previous description.

[0273] like Figure 6 As shown, it is another schematic diagram of the communication method provided by the present application, and the method includes the following steps.

[0274] S601. The network device sends SIB1, and correspondingly, the terminal device receives the SIB1. The SIB1 comes from a TN cell in the network device, and the SIB1 includes scheduling information of a second SIB and scheduling information of a third SIB.

[0275] S602. The network device sends first information based on the scheduling information of the second SIB, and correspondingly, the terminal device receives the first information based on the scheduling information of the second SIB, wherein the first information includes first NTN carrier frequency information.

[0276] S603. The network device sends second information based on the scheduling information of the third SIB, and correspondingly, the terminal device receives the second information based on the scheduling information of the third SIB. The second information includes first NTN parameter information, and the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0277] based on Figure 6 In the technical solution shown, the terminal device receives the first information and the second information through the TN cell. The first information includes the first NTN carrier frequency information, and the second information includes the first NTN parameter information. In other words, the terminal device can obtain the first NTN parameter information corresponding to the NTN cell indicated by the first NTN carrier frequency information in the TN cell, and the terminal device can subsequently communicate with the NTN cell based on the first NTN parameter information. Therefore, by communicating with the TN cell, the terminal device can obtain the NTN parameter information before communicating with the NTN cell, and the delay of the terminal device communicating with the NTN cell can be reduced to improve the communication efficiency.

[0278] In addition, the terminal device can receive the first information and the second information based on the scheduling information of the second SIB and the scheduling information of the third SIB contained in SIB1, so that the terminal device can accurately receive the second SIB and the third SIB, and then obtain the first information and the second information.

[0279] Optionally, the SIB1 received by the terminal device in step S601 also includes scheduling information of other SIBs, and the other SIBs may include SIB2 to SIB21. In other words, the second SIB and the third SIB may be different from SIB2 to SIB21, for example, the second SIB may be SIB x, and the third SIB may be SIB y, where x and y are both integers greater than 21, such as 22, 23, 24, 25, 26, etc. In addition, the information carried by the second SIB and the third SIB is used for the terminal device to communicate with the NTN cell. Since the legacy terminal device may not have the ability to communicate with the NTN cell, the legacy terminal device may not need to receive and parse SIB x and SIB y, thereby reducing unnecessary power consumption overhead of the legacy terminal device.

[0280] Optionally, the second SIB and the third SIB are any two different SIBs among SIB3, SIB4, and SIB5.

[0281] Optionally, the third SIB may be SIB19.

[0282] It should be understood that the implementation process of the first information, the second information, the second SIB and the third SIB can refer to the above description.

[0283] See also Figure 7 The embodiment of the present application provides a communication device 700, which can implement the functions of the communication device (the communication device is a terminal device or a network device) in the above method embodiment, and thus can also achieve the beneficial effects of the above method embodiment. In the embodiment of the present application, the communication device 700 can be a communication device, or an integrated circuit or component inside the communication device, such as a chip.

[0284] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 3 When the method is executed by the terminal device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive first information, second information and third information, and the first information, the second information and the third information are all from the TN cell; wherein the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; the processing unit 701 is used to determine that the first NTN carrier frequency information corresponds to the first NTN parameter information based on the third information.

[0285] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 3When the method is executed by the network device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is used to determine the first information, the second information and the third information; the transceiver unit 702 is used to send the first information, the second information and the third information through the TN cell; wherein the first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0286] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 5 And the method executed by the terminal device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive SIB1 from the TN cell, and the SIB1 includes scheduling information of the first SIB; the processing unit 701 is used to receive first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0287] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 5 When the method is executed by the network device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to send SIB1 through the TN cell, and the SIB1 includes scheduling information of the first SIB; the processing unit 701 is used to send first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0288] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 6 And the method executed by the terminal device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive SIB1 from the TN cell, and the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; the processing unit is used to receive first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the processing unit 701 is also used to receive second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0289] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 6 When the method is executed by the network device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to send SIB1 through the TN cell, and the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; the processing unit 701 is used to send first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the processing unit 701 is also used to send second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0290] It should be noted that the information execution process and other contents of the units of the above-mentioned communication device 700 can be specifically referred to the description in the method embodiment shown in the above-mentioned application, and will not be repeated here.

[0291] See also Figure 8 , is another schematic structural diagram of a communication device 800 provided in the present application, wherein the communication device 800 includes a logic circuit 801 and an input / output interface 802. The communication device 800 may be a chip or an integrated circuit.

[0292] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Figure 8 The input / output interface 802 in the communication interface may include an input interface and an output interface. Alternatively, the communication interface may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0293] Optionally, the input-output interface 802 is used to receive first information, second information and third information, wherein the first information, the second information and the third information all come from a TN cell; wherein the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; and the logic circuit 801 is used to determine, based on the third information, that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0294] Optionally, the logic circuit 801 is used to determine the first information, the second information and the third information; the input-output interface 802 is used to send the first information, the second information and the third information through the TN cell; wherein the first information includes the first NTN carrier frequency information, the second information includes the first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

[0295] Optionally, the input-output interface 802 is used to receive SIB1 from the TN cell, and the SIB1 includes scheduling information of the first SIB; the logic circuit 801 is used to receive first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0296] Optionally, the input-output interface 802 is used to send SIB1 through the TN cell, and the SIB1 includes scheduling information of the first SIB; the logic circuit 801 is used to send first information and second information based on the scheduling information of the first SIB, the first information includes first NTN carrier frequency information, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0297] Optionally, the input-output interface 802 is used to receive SIB1 from the TN cell, and the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; the processing unit is used to receive first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the logic circuit 801 is also used to receive second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0298] Optionally, the input-output interface 802 is used to send SIB1 through the TN cell, and the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; the logic circuit 801 is used to send first information based on the scheduling information of the second SIB, and the first information includes first NTN carrier frequency information; the logic circuit 801 is also used to send second information based on the scheduling information of the third SIB, and the second information includes first NTN parameter information; wherein the first NTN parameter information is used to access the NTN cell indicated by the first NTN carrier frequency information.

[0299] Among them, the logic circuit 801 and the input and output interface 802 can also execute other steps executed by the terminal device or the network device in any embodiment and achieve corresponding beneficial effects, which will not be repeated here.

[0300] In one possible implementation, Figure 7 The processing unit 701 shown can be Figure 8 The logic circuit 801 in.

[0301] Optionally, the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or completely implemented by software. The functions of the processing device may be partially or completely implemented by software.

[0302] Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and / or steps in any one of the method embodiments.

[0303] Alternatively, the processing device may include only a processor. A memory for storing a computer program is located outside the processing device, and the processor is connected to the memory via a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor may be integrated together, or may be physically independent of each other.

[0304] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGA), application specific integrated circuits (ASIC), system on chip (SoC), central processor unit (CPU), network processor (NP), digital signal processor (DSP), microcontroller unit (MCU), programmable logic device (PLD) or other integrated chips, or any combination of the above chips or processors.

[0305] See also Fig. 9 , is a communication device 900 involved in the above-mentioned embodiments provided in an embodiment of the present application, and the communication device 900 can specifically be a communication device as a terminal device in the above-mentioned embodiments.

[0306] Among them, a possible logical structure diagram of the communication device 900 is shown, and the communication device 900 may include but is not limited to at least one processor 901 and a communication port 902.

[0307] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Fig. 9The communication port 902 in the embodiment may include an input interface and an output interface. Alternatively, the communication port 902 may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0308] Further optionally, the device may also include at least one of a memory 903 and a bus 904 . In an embodiment of the present application, the at least one processor 901 is used to control and process the actions of the communication device 900 .

[0309] In addition, the processor 901 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0310] It should be noted that Fig. 9 The communication device 900 shown can be specifically used to implement the steps implemented by the terminal device in the aforementioned method embodiment, and achieve the corresponding technical effects of the terminal device. Fig. 9 The specific implementation methods of the communication device shown can all refer to the description in the aforementioned method embodiment, and will not be described in detail here.

[0311] See also Fig.10 , is a schematic diagram of the structure of the communication device 1000 involved in the above embodiment provided in the embodiment of the present application. The communication device 1000 may specifically be a communication device as a network device in the above embodiment. The structure of the communication device may refer to Fig.10 The structure shown.

[0312] The communication device 1000 includes at least one processor 1011 and at least one network interface 1014. Further optionally, the communication device also includes at least one memory 1012, at least one transceiver 1013 and one or more antennas 1015. The processor 1011, the memory 1012, the transceiver 1013 and the network interface 1014 are connected, for example, through a bus. In an embodiment of the present application, the connection may include various interfaces, transmission lines or buses, etc., which are not limited in this embodiment. The antenna 1015 is connected to the transceiver 1013. The network interface 1014 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1014 may include a network interface between the communication device and the core network device, such as an S1 interface, and the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0313] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Fig.10 The network interface 1014 in the embodiment may include an input interface and an output interface. Alternatively, the network interface 1014 may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0314] The processor 1011 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program, for example, to support the communication device to perform the actions described in the embodiment. The communication device may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device, execute the software program, and process the data of the software program. Fig.10 The processor 1011 in the embodiment can integrate the functions of the baseband processor and the central processor. It can be understood by those skilled in the art that the baseband processor and the central processor can also be independent processors, which are interconnected through technologies such as buses. It can be understood by those skilled in the art that the terminal device can include multiple baseband processors to adapt to different network formats, and the terminal device can include multiple central processors to enhance its processing capabilities. The various components of the terminal device can be connected through various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processor can also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data can be built into the processor, or it can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0315] The memory is mainly used to store software programs and data. The memory 1012 can be independent and connected to the processor 1011. Optionally, the memory 1012 can be integrated with the processor 1011, for example, integrated into a chip. Among them, the memory 1012 can store program codes for executing the technical solutions of the embodiments of the present application, and the execution is controlled by the processor 1011. The various types of computer program codes executed can also be regarded as drivers of the processor 1011.

[0316] Fig.10 Only one memory and one processor are shown. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be a storage element on the same chip as the processor, i.e., an on-chip storage element, or an independent storage element, which is not limited in the embodiments of the present application.

[0317] The transceiver 1013 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 1013 can be connected to the antenna 1015. The transceiver 1013 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1015 can receive radio frequency signals, and the receiver Rx of the transceiver 1013 is used to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or the digital intermediate frequency signal to the processor 1011, so that the processor 1011 further processes the digital baseband signal or the digital intermediate frequency signal, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 1013 is also used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 1011, and convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and send the radio frequency signal through one or more antennas 1015. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion processing on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal, and the order of the down-mixing and analog-to-digital conversion processing is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal, and the order of the up-mixing and digital-to-analog conversion processing is adjustable. The digital baseband signal and the digital intermediate frequency signal can be collectively referred to as a digital signal.

[0318] The transceiver 1013 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Optionally, a device in the transceiver unit for implementing a receiving function may be regarded as a receiving unit, and a device in the transceiver unit for implementing a sending function may be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0319] It should be noted that Fig.10 The communication device 1000 shown can be specifically used to implement the steps implemented by the network device in the aforementioned method embodiment, and achieve the corresponding technical effects of the network device. Fig.10 The specific implementation methods of the communication device 1000 shown can all refer to the description in the aforementioned method embodiment, and will not be repeated here.

[0320] An embodiment of the present application also provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in the possible implementation methods of the terminal device or network device in the above embodiments.

[0321] An embodiment of the present application also provides a computer program product (or computer program). When the computer program product is executed by the processor, the processor executes the method of the possible implementation mode of the above-mentioned terminal device or network device.

[0322] The embodiment of the present application also provides a chip system, which includes at least one processor for supporting a communication device to implement the functions involved in the possible implementation methods of the above-mentioned communication device. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data for the at least one processor. In one possible design, the chip system may also include a memory, which is used to store the necessary program instructions and data for the communication device. The chip system can be composed of chips, or it can include chips and other discrete devices, wherein the communication device can specifically be a terminal device or a network device in the aforementioned method embodiment.

[0323] An embodiment of the present application also provides a communication system, which includes the terminal device and the network device in any of the above embodiments.

[0324] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0325] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0326] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0327] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. The terminal chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0328] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the function of the base station in the above-mentioned method embodiment. The base station chip receives information from the terminal, which can be understood as the information is first received by other modules in the base station (such as a radio frequency module or an antenna), and then sent to the base station chip by these modules. The base station chip sends information to the terminal, which can be understood as the information is sent to other modules in the base station (such as a radio frequency module or an antenna), and then sent to the terminal by these modules.

[0329] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0330] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0331] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0332] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0333] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: include: Receiving first information, second information and third information, wherein the first information, the second information and the third information all come from a terrestrial network TN cell; The first information includes first non-terrestrial network NTN carrier frequency information, the second information includes first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

2. The method according to claim 1, characterized in that: The first information, the second information and the third information are carried in a first system information block SIB.

3. The method according to claim 2, characterized in that The method further comprises: receiving SIB1, where the SIB1 includes scheduling information of the first SIB; The receiving of the first information, the second information and the third information comprises: The first information, the second information, and the third information are received according to scheduling information of the first SIB.

4. The method according to claim 2, characterized in that: The first SIB is SIB3 or SIB4 or SIB5.

5. The method according to claim 1, characterized in that The first information and the third information are carried in a second SIB, and the second information is carried in a third SIB; or, The first information is carried in a second SIB, and the second information and the third information are carried in a third SIB.

6. The method according to claim 5, characterized in that The method further comprises: receiving SIB1, where the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; When the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the receiving the first information, the second information, and the third information includes: receiving the first information and the third information based on the scheduling information of the second SIB, and receiving the second information based on the scheduling information of the third SIB; When the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the receiving of the first information, the second information and the third information includes: receiving the first information based on the scheduling information of the second SIB, and receiving the second information and the third information based on the scheduling information of the third SIB.

7. The method according to claim 5, characterized in that The second SIB and the third SIB are any two different SIBs among SIB3, SIB4 and SIB5.

8. The method according to any one of claims 1 to 7, characterized in that: The third information includes at least one of the following: An identifier of the first NTN parameter information; an identifier of the first NTN carrier frequency information; Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to positions of N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

9. The method according to any one of claims 1 to 8, characterized in that: The first information further includes second NTN carrier frequency information, and the second NTN carrier frequency information corresponds to the first NTN parameter information.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: Sending access information to the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information; and / or, Sending a measurement result, where the measurement result is obtained by measuring a signal of the NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

11. The method according to any one of claims 1 to 10, characterized in that: The first NTN parameter information includes at least one of the following: Ephemeris information, public timing advance TA parameters, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink DL polarization indication information, uplink UL polarization indication information, TA report enable information.

12. A communication method, characterized in that: include: Sending the first information, the second information and the third information through a terrestrial network TN cell; The first information includes first non-terrestrial network NTN carrier frequency information, the second information includes first NTN parameter information, and the third information is used to indicate that the first NTN carrier frequency information corresponds to the first NTN parameter information.

13. The method according to claim 12, characterized in that The first information, the second information and the third information are carried in a first system information block SIB.

14. The method according to claim 13, characterized in that The method further comprises: Sending SIB1, where the SIB1 includes scheduling information of the first SIB; The sending of the first information, the second information and the third information comprises: The first information, the second information, and the third information are sent based on scheduling information of the first SIB.

15. The method according to claim 13, characterized in that The first SIB is SIB3 or SIB4 or SIB5.

16. The method according to claim 12, characterized in that The first information and the third information are carried in a second SIB, and the second information is carried in a third SIB; or, The first information is carried in a second SIB, and the second information and the third information are carried in a third SIB.

17. The method according to claim 15, characterized in that The method further comprises: Sending SIB1, where the SIB1 includes scheduling information of the second SIB and scheduling information of the third SIB; When the first information and the third information are carried in the second SIB, and the second information is carried in the third SIB, the sending of the first information, the second information, and the third information includes: sending the first information and the third information based on the scheduling information of the second SIB, and sending the second information based on the scheduling information of the third SIB; When the first information is carried in the second SIB, and the second information and the third information are carried in the third SIB, the sending of the first information, the second information and the third information includes: sending the first information based on the scheduling information of the second SIB, and sending the second information and the third information based on the scheduling information of the third SIB.

18. The method according to claim 15, characterized in that The second SIB and the third SIB are any two different SIBs among SIB3, SIB4 and SIB5.

19. The method according to any one of claims 12 to 18, characterized in that The third information includes at least one of the following: An identifier of the first NTN parameter information; an identifier of the first NTN carrier frequency information; Bitmap information, the bitmap information includes N bits, the N bits correspond one-to-one to positions of N NTN parameter information included in the second information, the N groups of NTN parameter information include the first NTN parameter information, and N is a positive integer.

20. The method according to any one of claims 12 to 19, characterized in that The first information further includes second NTN carrier frequency information, and the second NTN carrier frequency information corresponds to the first NTN parameter information.

21. The method according to any one of claims 12 to 20, characterized in that The method further comprises: A measurement result is received, where the measurement result is obtained by measuring a signal of an NTN cell indicated by the first NTN carrier frequency information based on the first NTN parameter information.

22. The method according to any one of claims 12 to 21, characterized in that The first NTN parameter information includes at least one of the following: Ephemeris information, public timing advance TA parameters, start time parameter information, synchronization effective time parameter information, kmac parameter information, downlink DL polarization indication information, uplink UL polarization indication information, TA report enable information.

23. A communication device, characterized in that: Comprising means for performing the method as claimed in any one of claims 1 to 22.

24. A communication device, characterized in that: The method comprises at least one processor coupled to a memory; the at least one processor is configured to execute the method according to any one of claims 1 to 22.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is executed by a communication device, the communication device implements the method according to any one of claims 1 to 22.

26. A computer program product, characterized in that When the computer program in the computer program product is executed by a communication device, the communication device is caused to implement the method according to any one of claims 1 to 22.

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