A phase compensation method, device and storage medium

Abstract

The present disclosure relates to a phase compensation method and device and a storage medium, and belongs to the technical field of communication, and is used for ensuring phase continuity in physical channel repeated transmission. The method comprises the following steps: determining a target link; and performing phase compensation on the target link in physical channel repeated transmission.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a phase compensation method and device and storage medium. BACKGROUND

[0002] In Non-Terrestrial Networks (NTN) research, satellite communication networks are considered an important aspect of the future development of cellular mobile communication technology. In satellite communication, terminals on the ground communicate with network devices through satellites as relays. Among them, the link from the terminal to the satellite is called the service link, and the link from the satellite to the base station is called the feeder link.

[0003] In NTN, due to the long distance between the satellite and the ground terminal, the large path loss will cause the coverage of some channels to be limited. The method of joint channel estimation is used to improve the coverage of the satellite. Joint channel estimation is also called Demodulation Reference Signal bundling (DMRS bundling), which is to jointly demodulate the repeatedly transmitted DMRS of a physical channel, such as a Physical Uplink Shared Channel (PUSCH). However, there are some problems in improving the signal coverage of the satellite through joint channel estimation. SUMMARY

[0004] To overcome the problems in the related art, the present disclosure provides a phase compensation method, device and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a phase compensation method is provided, applied to a communication device, comprising: determining a target link; and performing phase compensation on the target link when a physical channel is repeatedly transmitted.

[0006] In an embodiment, when the physical channel is repeatedly transmitted, performing phase compensation on the target link comprises: based on a phase offset of the target link, performing phase compensation on the link when the physical channel is repeatedly transmitted.

[0007] In an embodiment, the target link comprises a service link and / or a feeder link.

[0008] In an embodiment, the phase offset of the target link is determined based on at least one of the following:

[0009] a time offset on the service link;

[0010] a frequency offset on the feeder link;

[0011] a time offset on the feeder link.

[0012] In an embodiment, the frequency offset on the service link is determined based on at least a terminal position and a satellite position.

[0013] In an embodiment, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcasted by a network device; wherein the terminal communicates with the network device via a satellite.

[0014] In an embodiment, the time offset on the feeder link is determined based on a common timing advance parameter.

[0015] In an embodiment, the common timing advance parameter is located in system information broadcasted by the network device.

[0016] In an embodiment, the communication device is a terminal;

[0017] the time offset on the service link is determined based on at least the terminal position and a satellite position.

[0018] In an embodiment, the communication device is a network device;

[0019] the time offset on the service link is determined based on at least a reference position and a satellite position.

[0020] In an embodiment, the reference position is determined based on a terminal report, or the reference position is determined based on a beam in which the terminal is located.

[0021] In an embodiment, the phase offset of the target link is further determined based on a frequency offset on the feeder link.

[0022] In an embodiment, the frequency offset on the feeder link is determined based on at least a position of a network device and a position of a satellite.

[0023] In an embodiment, the target link is determined based on at least one of the following:

[0024] a standard predefinition;

[0025] an indication by a network device;

[0026] capability information of a terminal.

[0027] According to a second aspect of the embodiments of the present disclosure, a phase compensation apparatus is provided, applied to a communication device, comprising: a determination module, configured to determine a target link; and a compensation module, configured to perform phase compensation on the target link when a physical channel is repeatedly transmitted.

[0028] In an embodiment, the compensation module is configured to perform phase compensation on the target link based on a phase offset of the target link when the physical channel is repeatedly transmitted.

[0029] In an embodiment, the target link comprises a service link and / or a feeder link.

[0030] In an embodiment, the phase offset of the target link is determined based on at least one of:

[0031] a time offset on the service link;

[0032] a frequency offset on the service link;

[0033] a time offset on the feeder link.

[0034] In an embodiment, the frequency offset on the service link is determined based on at least a terminal position and a satellite position.

[0035] In an embodiment, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcasted by a network device; wherein the terminal communicates with the network device via a satellite.

[0036] In an embodiment, the time offset on the feeder link is determined based on a common timing advance parameter.

[0037] In an embodiment, the common timing advance parameter is located in system information broadcasted by the network device.

[0038] In an embodiment, the communication device is a terminal.

[0039] The time offset on the service link is determined based on at least the terminal position and the satellite position.

[0040] In an embodiment, the communication device is a network device.

[0041] The time offset on the service link is determined based on at least a reference position and a satellite position.

[0042] In an embodiment, the reference position is determined based on a terminal report, or the reference position is determined based on a beam in which the terminal is located.

[0043] In an embodiment, the phase offset of the target link is further determined based on a frequency offset on the feeder link.

[0044] In an embodiment, the frequency offset on the feeder link is determined based on at least a position of a network device and a position of a satellite.

[0045] In an implementation, the target link is determined based on at least one of the following:

[0046] A standard predefinition;

[0047] An indication of the network device;

[0048] Capability information of the terminal.

[0049] The technical solution provided by the embodiments of the present disclosure can include the following beneficial effects: by determining the target link that needs to be phase compensated, the target link is phase compensated when the physical channel is repeatedly transmitted. Thus, the target link compensated by the communication device can meet the requirement of phase continuity when the physical channel is repeatedly transmitted, and the coverage of the channel can be improved by using the DMRS bundling mode.

[0050] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the description.

[0052] Figure 1 is a schematic diagram of a communication system according to an exemplary embodiment.

[0053] Figure 2 is a flowchart of a phase compensation method according to an exemplary embodiment.

[0054] Figure 3 is a flowchart of a phase compensation method according to an exemplary embodiment.

[0055] Figure 4 is a flowchart of a phase compensation method according to an exemplary embodiment.

[0056] Figure 5 is a block diagram of a phase compensation apparatus according to an exemplary embodiment.

[0057] Figure 6 is a block diagram of a phase compensation apparatus according to an exemplary embodiment.

[0058] Figure 7 is a block diagram of an apparatus for a phase compensation method according to an exemplary embodiment.

[0059] Figure 8is a block diagram of an apparatus for a phase compensation method according to an exemplary embodiment. DETAILED DESCRIPTION

[0060] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements or similar elements, unless otherwise indicated. The following exemplary embodiments described herein represent implementations consistent with the present disclosure.

[0061] The phase compensation method provided by the embodiments of the present disclosure can be applied to a satellite communication system, a high altitude platform station (HAPS) communication, an unmanned aerial vehicle, and other non-terrestrial network (NTN) systems, such as an integrated communication and navigation (IcaN) system, a global navigation satellite system (GNSS), and the like. The non-terrestrial communication network NTN can also be a satellite and terrestrial network for 5G (SaT5G) or a system defined by the Space Communications Technical Committee (TC12), which is not limited in the present application.

[0062] The NTN communication system can be integrated with a conventional mobile communication system. The conventional mobile communication system can be code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier FDMA (SC-FDMA), carrier sense multiple access with collision avoidance, a 5th generation (5G) communication system (e.g., a new radio (NR) system), and a future mobile communication system, etc.

[0063] Figure 1 A schematic diagram of an NTN communication system is given for the embodiments of the present disclosure. Referring to FIG. 1, the NTN communication system includes a terminal 101, a satellite 102, and a network device 103. Figure 1

[0064] The terminal 101 is connected to the satellite 102 through a service link, and the satellite 102 is connected to the network device 103 through a feeder link.

[0065] In some embodiments, the terminal 101 can be a device that provides voice and / or data connectivity for a user, for example, the terminal can be a handheld device having wireless connection function, a vehicle-mounted device, etc. Currently, some examples of the terminal are: a mobile phone, a customer premise equipment (CPE), a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0066] In some embodiments, the satellite 102 can be a low earth orbit (LEO) satellite, a non-geostationary earth orbit (NGEO) satellite, etc.

[0067] In some embodiments, the satellite 102 can use a transparent mode for communication, which is also called a pipe-through mode. The satellite acts as a relay device and only transparently forwards signals without any processing. The terminal and the network device use the satellite as a relay for wireless communication.

[0068] ​In some embodiments, network device 103 may also be referred to as a wireless access network device. This wireless access network device may be: a base station, an evolved Node B (eBY), a home base station, an access point (AP) in a Wi-Fi system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It may also be a gNB in ​​an NR system, or a component or part of a base station. It should be understood that the specific technology and device form used in the embodiments of this disclosure are not limited. In this disclosure, the network device can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area (cell). Furthermore, when it is a vehicle-to-everything (V2X) communication system, the network device may also be an in-vehicle device.

[0069] Understandable, Figure 1 The NTN communication system shown is for illustrative purposes only. An NTN communication system may also include other equipment, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the NTN communication system.

[0070] In related technologies, the long distance between the satellite and the ground terminal in NTN results in significant path loss, leading to limited coverage on some channels. Joint channel estimation (DMRS), also known as Demodulation Reference Signal Bundling, can improve satellite coverage. It allows for the joint demodulation of DMRS repeatedly transmitted on multiple physical channels, such as the Physical Uplink Shared Channel (PUSCH). However, improving satellite signal coverage through DMRS has some limitations.

[0071] For example, a prerequisite for using DMRS bundling is that the terminal can guarantee phase continuity within an uplink transmission period. This uplink transmission period is also called the time domain window (TDW). The repeated transmissions mentioned below can also be understood as repeated transmissions within the TDW.

[0072] Due to the long distance between the satellite and the terminal and the high-speed movement of the satellite, there is a large time offset and frequency offset between the terminal and the network device, and the existence of the time offset and / or the frequency offset causes the phase to change. At this time, it is impossible to guarantee the phase continuity when the physical channel is repeatedly transmitted.

[0073] Therefore, in the NTN communication system, the phase needs to be compensated to meet the requirement of phase continuity when the physical channel is repeatedly transmitted. However, whether the terminal or the network device performs the phase compensation is a problem to be determined. If the terminal performs the phase compensation, how does the terminal perform the phase compensation; if the base station performs the compensation, whether the base station performs the phase compensation on the whole link (the service link + the feeder link) or only on the feeder link is also a problem to be determined.

[0074] Based on this, the embodiment of the present disclosure proposes a phase compensation method, which determines a target link and performs phase compensation on the target link when the physical channel is repeatedly transmitted. Therefore, the communication device can perform phase compensation on the link when the physical channel is repeatedly transmitted based on the determined link, so that the communication device can meet the requirement of phase continuity when the physical channel is repeatedly transmitted, and then can use the DMRS bundling mode to improve the coverage.

[0075] The communication device involved in the embodiment of the present disclosure can be a terminal or a network device in the NTN system as shown in Figure 1 In the embodiment of the present disclosure, the phase compensation of the terminal on the target link belongs to pre-compensation, that is, the compensation behavior of the terminal occurs before the repeated transmission starts. The phase compensation of the network device on the target link belongs to post-compensation, that is, the compensation behavior of the network device occurs after the repeated transmission signal is received.

[0076] Figure 2 A flowchart of a phase compensation method according to an exemplary embodiment is shown in FIG. 1, and the phase compensation method is used in a communication device, including the following steps. Figure 2

[0077] In step S11, a target link is determined.

[0078] In step S12, the phase compensation is performed on the target link when the physical channel is repeatedly transmitted.

[0079] In some embodiments, the communication device can be the terminal 101 or the network device 103.

[0080] ​The target link indicates a link that needs to be phase compensated. For example, when the communication device determines that the phase offset between at least two time slots of a plurality of physical channels, such as PUSCH repeated transmission, does not satisfy the continuity of the phase offset, the target link that needs to be phase compensated needs to be determined.

[0081] In some embodiments, the target link includes a service link and / or a feeder link. For example, in an NTN, the service link is a communication link between a terminal and a satellite. The feeder link is a communication link between the satellite and a network device.

[0082] In some embodiments, the communication device determines the target link by standard predefinition, network device indication, or terminal capability information.

[0083] In some embodiments, since the precondition for using DMRS bundling is the requirement that the terminal and the network device can ensure the phase continuity within a period of uplink transmission time, in order to avoid the inability to jointly demodulate the DMRS of the physical channel repeated transmission using DMRS bundling, the target link of the physical channel repeated transmission needs to be phase compensated so that the compensated phase satisfies the requirement of phase continuity between the terminal and the network device.

[0084] In an embodiment, the requirement of the above phase continuity (also referred to as phase consistency) is that the phase offset between two time slots of the physical channel repeated transmission is not greater than a preset value. For example, the preset value is 25 degrees or 30 degrees. As shown in Table 1 below:

[0085] Table 1

[0086]

[0087] In some embodiments, when the physical channel is repeated, the target link is phase compensated based on the phase offset of the target link so that the compensated phase satisfies the requirement of phase continuity.

[0088] The phase offset on the target link is determined based on the time offset and / or the frequency offset.

[0089] It is worth noting that the time offset of the present disclosure can represent the time offset or the change of the time offset, i.e., the time drift. The frequency offset can represent the frequency offset or the change of the frequency offset, i.e., the frequency drift.

[0090] In an embodiment, the phase offset is determined based on the time offset.

[0091] For example, the phase offset is determined based on the time offset and the sampling frequency.

[0092] For example, the phase offset is determined based on the formula φ = 2π * f * (t1 - t2). Here, φ represents the phase offset, f represents the sampling frequency, and (t1 - t2) represents the time offset between two slots. Assuming a maximum time offset of 0.1 µs / ms and an SCS of 15 kHz, when configured with 1 RB transmission, the maximum phase offset after 1 ms is approximately 90 kHz * 360° * 0.1 µs = 3.24°, and the phase offset after 8 ms is 25.92°. Assuming the maximum time offset change is 0.6 µs / s², and the terminal perfectly compensates for the phase offset at the start of the repeated transmission, the time offset becomes 12 ns / s. With a maximum time offset of 12 ns / s, the phase offset after 20 ms of transmission at 540 kHz is approximately 0.05 degrees, satisfying the phase continuity requirements defined in Table 1 above.

[0093] In another implementation, the phase offset is determined based on the frequency offset.

[0094] For example, the phase offset is determined based on the frequency offset and the time length.

[0095] For example, based on formula Determine the phase offset. Where φ is the phase offset, and f... Doppler This represents the Doppler frequency shift, where t is the time length. It is assumed that the frequency shift is perfectly compensated at the beginning of the repetitive transmission. The maximum frequency shift is 0.09 ppm / s. Assuming the maximum frequency shift remains constant during the repetitive transmission, the average frequency shift is f. Doppler = 1 / 2at, where a is the maximum frequency offset drift equal to 0.09ppm / s. Therefore, after 1ms, the phase offset between time slot p-1 and time slot p is 0.0468°, and after 20ms, the phase offset between time slot p-20 and time slot p is 18.72°, satisfying the phase continuity requirement defined in Table 1 above.

[0096] It is worth noting that the sampling frequency disclosed herein is determined based on the frequency resources used for repeated transmissions of the physical channel.

[0097] In one embodiment, the sampling frequency can be determined based on the frequency of repeated transmission of the physical channel, for example, it can be half, one-third, or one-quarter of the frequency of repeated transmission of the physical channel, or the sampling frequency can be calculated based on the frequency resources of repeated transmission of the physical channel using a preset calculation method. For example, in this embodiment, the sampling frequency is half of the frequency of repeated transmission of the physical channel.

[0098] Similarly, the time length of the embodiment of the present disclosure can be the unit time length when the physical channel is repeatedly transmitted once, can also be the time length of the entire TDW, and can also be an undefined time length depending on the UE implementation. The following embodiments will not be described.

[0099] In the embodiment of the present disclosure, by determining the target link that needs to be compensated, the target link is compensated in phase when the physical channel is repeatedly transmitted. Therefore, the target link compensated by the communication device can meet the requirement of phase continuity when the physical channel is repeatedly transmitted, and the coverage of the channel can be improved by using the DMRS bundling mode.

[0100] Here, the communication device is taken as an example for description. As shown in Figure 3 Figure 3 is a flowchart of a phase compensation method according to an example embodiment. As shown in Figure 3 , the phase compensation method is used in a terminal, and includes the following steps.

[0101] In step S21, the terminal determines the target link.

[0102] In step S22, the terminal compensates the target link in phase when the physical channel is repeatedly transmitted.

[0103] In the embodiment of the present disclosure, the terminal compensates the target link in phase when the physical channel is repeatedly transmitted by determining the target link to be compensated. Therefore, the terminal can compensate the link in phase when the physical channel is repeatedly transmitted based on the determined link, so that the physical channel can meet the requirement of phase continuity when the physical channel is repeatedly transmitted, and the coverage of the channel can be improved by using the DMRS bundling mode.

[0104] In the phase compensation method provided by the embodiment of the present disclosure, the target link includes a service link and / or a feeder link.

[0105] In an implementation, the terminal determines the target link as a service link.

[0106] In another implementation, the terminal determines the target link as a feeder link.

[0107] In another implementation, the terminal determines the target link as a service link and a feeder link.

[0108] In the embodiment of the present disclosure, the terminal can determine the target link, so as to compensate the determined target link in phase, so that the compensated phase of the target link meets the requirement of phase continuity.

[0109] ​In some embodiments, the terminal compensates the phase of the target link based on a phase offset of the target link when the physical channel is repeatedly transmitted.

[0110] In some embodiments, the phase offset of the target link is determined based on at least one of:

[0111] a time offset on the serving link;

[0112] a frequency offset on the serving link;

[0113] a time offset on the feeder link.

[0114] In some embodiments, when the target link is the serving link, the phase offset on the target link is determined based on the time offset on the serving link.

[0115] In one implementation, the phase offset is determined based on the time offset on the serving link and a sampling frequency.

[0116] For example, the phase offset on the serving link is determined based on the formula φ = 2π*f*(t1-t2), where φ represents the phase offset, f represents the sampling frequency, and t1-t2 represents the time offset on the serving link.

[0117] In other embodiments, when the terminal determines that the target link is the serving link, the phase offset on the target link is determined based on a frequency offset on the serving link.

[0118] In one implementation, when the terminal determines that the target link is the serving link, the phase offset on the target link is determined based on the frequency offset on the serving link and a time length.

[0119] For example, the phase offset on the serving link is determined based on the formula φ = 2π*f doppler *t, where φ represents the phase offset, f doppler represents the frequency offset on the serving link, and t represents the time length.

[0120] In other embodiments, when the terminal determines that the target link is the serving link, the phase offset on the target link is determined based on the frequency offset on the serving link and a frequency offset.

[0121] In one implementation, when the terminal determines that the target link is the serving link, a first phase offset is determined based on a time offset on the serving link and a sampling frequency, and a second phase offset is determined based on a frequency offset on the serving link and a time length. The phase offset on the target link includes the first phase offset and the second phase offset.

[0122] For example, the first phase offset on the service link is determined based on the formula φ = 2π * f * (t1 - t2). Here, φ represents the phase offset, f represents the sampling frequency, and t1 - t2 represents the time offset on the service link. The formula φ = 2π * f doppler *t determines the second phase offset on the service link. Here, φ represents the phase offset, and f... doppler This represents the frequency offset on the service link, and t represents the time length.

[0123] In other embodiments, when the terminal determines that the target link is a feeder link, the phase offset on the feeder link is determined based on the time offset on the feeder link.

[0124] In one implementation, when the terminal determines that the target link is a feeder link, it determines the phase offset based on the time offset and sampling frequency on the feeder link.

[0125] For example, the phase offset on the feeder link can be determined based on the formula φ = 2π * f * TA. Here, φ represents the phase offset, f represents the sampling frequency, and TA represents the time offset on the feeder link.

[0126] In other embodiments, when the terminal determines that the target link is a service link and a feeder link, it determines the phase offset on the service link based on the time offset and / or frequency offset on the service link, and determines the phase offset on the feeder link based on the time offset on the feeder link.

[0127] In one implementation, when the terminal determines that the target link is both a serving link and a feeder link, the phase offset is determined based on the time offset and sampling frequency on the feeder link. The phase offset on the serving link can be referred to the content described in the exemplary embodiments above, and will not be repeated here.

[0128] For example, the phase offset on the feeder link can be determined based on the formula φ = 2π * f * TA. Here, φ represents the phase offset, f represents the sampling frequency, and TA represents the time offset on the feeder link.

[0129] In a phase compensation method provided in this disclosure, the time offset on the service link is determined based at least on the terminal location and the satellite location.

[0130] In one exemplary embodiment, the distance between the terminal and the satellite is determined based on the terminal's location and the satellite's location, and the time offset is determined by combining the speed of light.

[0131] In a phase compensation method provided in this disclosure, the frequency offset on the service link is determined based at least on the terminal location and the satellite location.

[0132] In an example embodiment, the relative moving speed between the terminal and the satellite is determined based on the terminal position and the satellite position, and the frequency offset is determined based on the relative moving speed and the speed of light.

[0133] In some embodiments, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcast by the network device, wherein the terminal communicates with the network device through the satellite.

[0134] In an implementation, the satellite ephemeris information is located in system information SIB19.

[0135] In the embodiments of the present disclosure, since the terminal cannot easily obtain the position information of the network device, etc., the terminal does not consider phase compensation for the feeder link based on the frequency offset.

[0136] In the phase compensation method provided by the embodiments of the present disclosure, the time offset on the feeder link is determined based on a common timing advance parameter.

[0137] In some embodiments, the common timing advance parameter is located in system information broadcast by the network device.

[0138] In the phase compensation method provided by the embodiments of the present disclosure, the link for phase compensation is determined based on at least one of the following manners:

[0139] Standard predefinition;

[0140] Network device indication;

[0141] Capability information of the terminal.

[0142] The manner in which the terminal determines the link for phase compensation is described below in example embodiments.

[0143] In an example embodiment, the target link (service link and / or feeder link) for phase compensation of the terminal is predefined in a standard, and the terminal performs phase compensation on the target link according to the standard.

[0144] In another example embodiment, the network device indicates the target link, and the terminal performs phase compensation on the target link based on the indication of the network device.

[0145] In another example embodiment, the capability information of the terminal supports the terminal to perform phase compensation on the target link, and the terminal performs phase compensation on the target link supported by the terminal based on the capability information.

[0146] In another exemplary embodiment, the standard predefines a method for a terminal to determine the phase offset of a target link (serving link and / or feeder link). When the terminal has phase compensation capability, it can perform phase compensation on the target link according to the standard. When the terminal does not have phase compensation capability, it does not perform phase compensation on the target link.

[0147] In another exemplary embodiment, the standard may predefine the specific phase compensation method for the target link by the terminal, or it may define a specific phase compensation method that the terminal determines itself.

[0148] In another exemplary embodiment, the network device can indicate a target link. The terminal can determine the target link based on the network device's indication and perform phase compensation on the target link. In one example, the terminal can determine the target link based on the network device's indication and the terminal's capability information.

[0149] In another exemplary embodiment, the network device may also instruct the specific method of terminal phase compensation. In one example, the network device may instruct the specific method of terminal phase compensation based on the terminal's capabilities. The network device may receive terminal capabilities reported by the terminal, including whether the terminal supports phase compensation.

[0150] It should be understood that the above embodiments are merely examples, and this application does not limit the method for determining the target link or the specific method for phase compensation.

[0151] This explanation uses network equipment as an example of communication equipment. Figure 4 As shown, Figure 4 This is a flowchart illustrating a phase compensation method according to an exemplary embodiment, such as... Figure 4 As shown, the phase compensation method is used in network devices and includes the following steps.

[0152] In step S31, the network device determines the target link.

[0153] In step S32, when the physical channel is repeatedly transmitted, the network device performs phase compensation on the target link.

[0154] In this embodiment of the disclosure, the network device determines the target link for compensation and performs phase compensation on the target link during repeated transmissions of the physical channel. Thus, the network device can perform phase compensation on the link based on the determined link during repeated transmissions of the physical channel, ensuring that the phase continuity requirement is met during repeated transmissions of the physical channel, thereby enabling the use of DMRS bundling to improve channel coverage.

[0155] In a phase compensation method provided in this embodiment, the target link includes a service link and / or a feeder link.

[0156] In an embodiment, the network device determines the target link to be a feeder link.

[0157] In another embodiment, the network device determines the target link to be a service link.

[0158] In another embodiment, the network device determines the target link to be both a service link and a feeder link.

[0159] In the embodiments of the present disclosure, the network device can determine the target link, and then perform phase compensation on the determined target link, so that the compensated phase in the target link meets the requirement of phase continuity.

[0160] In some embodiments, when the physical channel is repeatedly transmitted, the network device performs phase compensation on the target link based on the phase offset of the target link.

[0161] In some embodiments, the phase offset on the target link is determined based on at least one of:

[0162] a time offset on the service link;

[0163] a frequency offset on the service link;

[0164] a time offset on the feeder link;

[0165] a frequency offset on the feeder link.

[0166] In some embodiments, the network device determines the target link to be a feeder link, and determines the phase offset on the target link based on a time offset on the feeder link.

[0167] In an embodiment, the network device determines the target link to be a feeder link, and determines the phase offset on the target link based on a time offset on the feeder link and a sampling frequency.

[0168] For example, the phase offset on the feeder link is determined based on the formula φ = 2π*f*TA, where φ represents the phase offset, f represents the sampling frequency, and TA represents the time offset on the feeder link.

[0169] In another embodiment, the network device determines the target link to be a feeder link, and determines the phase offset on the target link based on a frequency offset on the feeder link.

[0170] In an embodiment, the network device determines the target link to be a feeder link, and determines the phase offset on the target link based on a frequency offset on the feeder link and a time length.

[0171] For example, the phase offset on the feeder link is determined based on the formula φ = 2π*f doppler *TA, where φ represents the phase offset, f dopplerto represent a frequency offset on the feeder link, t to represent a time length.

[0172] In other embodiments, the network device determines that the target link is a feeder link, and determines a phase offset on the feeder link based on a time offset and a frequency offset on the feeder link.

[0173] In one implementation, the network device determines that the target link is a feeder link, determines a first phase offset on the feeder link based on a time offset and a sampling frequency on the feeder link, and determines a second phase offset on the feeder link based on a frequency offset and a time length on the feeder link, the phase offset on the feeder link comprising the first phase offset and the second phase offset.

[0174] For example, the first phase offset on the feeder link is determined based on the formula φ = 2π*f*TA, where φ represents the phase offset, f represents the sampling frequency, and TA represents the time offset on the feeder link. doppler The second phase offset on the feeder link is determined based on the formula φ = 2π*f doppler to represent a frequency offset on the feeder link, t to represent a time length.

[0175] In other embodiments, the network device determines that the target link is a service link, and determines a phase offset on the service link based on a time offset on the service link.

[0176] In one implementation, the network device determines that the target link is a service link, and determines a phase offset on the service link based on a time offset and a sampling frequency.

[0177] For example, the phase offset on the service link is determined based on the formula φ = 2π*f*(t1-t2). Where φ represents the phase offset, f represents the sampling frequency, and t1-t2 represents the time offset on the service link.

[0178] In other embodiments, the network device determines that the target link is a service link, and determines a phase offset on the service link based on a frequency offset on the service link.

[0179] In one implementation, the network device determines that the target link is a service link, and determines a phase offset on the service link based on a frequency offset and a time length.

[0180] For example, the phase offset on the service link is determined based on the formula φ = 2π*f doppler Where φ represents the phase offset, f represents the sampling frequency, and t represents the time length. doppler to represent a frequency offset on the service link, t to represent a time length.

[0181] In some embodiments, the network device determines that the target link is a service link and a feeder link, determines the phase offset on the service link based on the time offset on the service link, and determines the phase offset on the feeder link based on the time offset and / or the frequency offset on the feeder link.

[0182] In one embodiment, the network device determines that the target link is a service link and a feeder link, and determines the phase offset on the service link based on the time offset and the sampling frequency. The phase offset on the feeder link can refer to the content included in the above exemplary embodiments, and this exemplary embodiment will not be described herein.

[0183] For example, the phase offset on the service link is determined based on the formula φ = 2π*f*(t1-t2). Wherein, φ represents the phase offset, f represents the sampling frequency, and t1-t2 represents the time offset on the service link.

[0184] In some embodiments, the network device determines that the target link is a service link and a feeder link, determines the phase offset on the service link based on the frequency offset on the service link, and determines the phase offset on the feeder link based on the time offset and / or the frequency offset on the feeder link.

[0185] In one embodiment, the network device determines that the target link is a service link and a feeder link, and determines the phase offset on the service link based on the frequency offset and the time length. The phase offset on the feeder link can refer to the content included in the above exemplary embodiments, and this exemplary embodiment will not be described herein.

[0186] For example, the phase offset on the service link is determined based on the formula φ = 2π*f doppler *t. Wherein, φ represents the phase offset, f doppler represents the frequency offset on the service link, and t represents the time length.

[0187] In some embodiments, the network device determines that the target link is a service link and a feeder link, determines the phase offset on the service link based on the time offset and / or the frequency offset on the service link, and determines the phase offset on the feeder link based on the time offset and / or the frequency offset on the feeder link.

[0188] In one embodiment, the network device determines that the target link is a service link and a feeder link, determines a first phase offset on the service link based on the time offset and the sampling frequency, determines a second phase offset on the service link based on the frequency offset and the time length, and the phase offset on the service link includes the first phase offset and the second phase offset. The phase offset on the feeder link can refer to the content included in the above exemplary embodiments, and this exemplary embodiment will not be described herein.

[0189] For example, the phase offset on the service link is determined based on a formula φ = 2π*f*(t1-t2), where φ represents the phase offset, f represents the sampling frequency, and t1-t2 represents the time offset on the service link. The phase offset on the feeder link is determined based on a formula φ = 2π*f*TA, where φ represents the phase offset, f represents the sampling frequency, and TA represents the time offset on the feeder link.

[0190] In a phase compensation method provided by an embodiment of the present disclosure, the frequency offset on the service link is determined based at least on the terminal position and the satellite position.

[0191] In an example embodiment, the relative moving speed between the terminal and the satellite is determined based on the terminal position and the satellite position, and the frequency offset is determined based on the relative moving speed and the speed of light.

[0192] In some embodiments, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcast by a network device, where the terminal communicates with the network device through the satellite.

[0193] In an implementation, the satellite ephemeris information is located in system information SIB19.

[0194] In a phase compensation method provided by an embodiment of the present disclosure, the time offset on the service link is determined based at least on a reference position and a satellite position.

[0195] The reference position represents a position point on the service link, and there is one reference position on one service link. The reference positions on different service links can be the same or different.

[0196] In an embodiment of the present disclosure, since one satellite is usually connected with multiple terminals, the distances between the multiple terminals and the satellite are not fixed, that is, the service links of each terminal are different. If the network device performs phase compensation on the entire service link, the network device needs to determine the positions of each terminal and determine the phase offset corresponding to the service link of each terminal, which leads to high complexity of the network device in performing phase compensation on the service link. In order to reduce the complexity of the network device in performing phase compensation on the service link, a reference position can be determined on the service link first. Assuming that the positions of all terminals in a preset area are the reference position, for the network device, the phase compensation on the service links of all terminals is the same, and there is no need to determine the position of each terminal respectively.

[0197] In some embodiments, the reference position is determined based on a report of a terminal, or the reference position is determined based on a beam in which the terminal is located.

[0198] In an implementation, each terminal reports a reference position determined by the terminal respectively.

[0199] In another implementation, the reference position is a center point of the beam in which the terminal is located.

[0200] In a phase compensation method provided by an embodiment of the present disclosure, the time offset on the feeder link is determined based on a common timing advance parameter.

[0201] In some embodiments, the common timing advance parameter is located in system information broadcast by the network device.

[0202] In a phase compensation method provided by an embodiment of the present disclosure, the frequency offset on the feeder link is determined based on at least a position of the network device and a position of the satellite.

[0203] In an implementation, a relative moving speed of the network device and the satellite is determined based on the position of the network device and the position of the satellite, and the frequency offset of the feeder link is determined based on the relative moving speed and the speed of light.

[0204] In a phase compensation method provided by an embodiment of the present disclosure, the target link is determined based on at least one of the following manners:

[0205] a standard is predefined;

[0206] an indication of the network device;

[0207] capability information of the terminal.

[0208] The manner in which the network device determines the target link is described below in exemplary embodiments.

[0209] In an exemplary embodiment, the target link (the service link and / or the feeder link) on which the network device performs phase compensation is predefined in a standard, and the network device performs phase compensation on the target link according to the standard.

[0210] In this case, when the network device performs phase compensation on the target link, the network device can require the terminal to report relevant information, such as the position information of the terminal.

[0211] In another exemplary embodiment, the network device indicates that the target link on which the terminal performs phase compensation is the service link, and the network device can determine that the target link on which the network device performs phase compensation is the feeder link.

[0212] In another exemplary embodiment, the network device receives the capability information reported by the terminal, and the network device can determine whether phase compensation needs to be performed on the target link based on the capability information reported by the terminal.

[0213] For example, the network device determines, based on the capability information of the terminal, that the target link on which the terminal supports performing phase compensation is the service link, and the network device can determine that the target link on which phase compensation is performed is the feeder link.

[0214] For another example, the network device determines that the terminal does not support phase compensation based on the capability information of the terminal, and the network device can determine that the target link for phase compensation is the service link and / or the feeder link.

[0215] In another example embodiment, the method for the network device to determine the phase offset of the target link (the service link and / or the feeder link) is predefined in the standard, and the network device can perform phase compensation on the target link based on the standard.

[0216] In another example embodiment, the target link for phase compensation is predefined in the standard, but the terminal does not have the capability of phase compensation, and the network device performs phase compensation on the target link. It should be understood that the above embodiments are only examples, and the application does not limit the method for determining the target link and the specific method for phase compensation.

[0217] It should be noted that the above embodiments can be implemented alone or in combination with any one of the embodiments of the present disclosure, and will not be described here.

[0218] Examples of several combination methods are provided below. The application also provides the following phase compensation methods.

[0219] Method 1: The terminal performs phase compensation on the service link, and the network device performs phase compensation on the feeder link.

[0220] In one implementation, the terminal determines the time offset and / or the frequency offset on the service link based on the terminal position and the satellite position, and the terminal performs phase compensation on the service link based on the time offset and / or the frequency offset on the service link.

[0221] In another implementation, the network device determines the time offset on the feeder link based on the commom TA parameter, and / or determines the frequency offset on the feeder link based on the network device position and the satellite position. The network device performs phase compensation on the feeder link based on the time offset and / or the frequency offset on the feeder link.

[0222] For other contents of this method, please refer to the related contents in the previous embodiments, which will not be described here.

[0223] Method 2: The terminal performs phase compensation on the service link and the feeder link.

[0224] In one implementation, the terminal determines the time offset and / or the frequency offset on the service link based on the terminal position and the satellite position, and the terminal performs phase compensation on the service link based on the time offset and / or the frequency offset on the service link.

[0225] In another implementation, the terminal determines the time offset on the feeder link based on the common TA parameter, and the terminal performs phase compensation on the feeder link based on the time offset on the feeder link.

[0226] For details of the method, refer to the related content in the foregoing embodiments, which will not be repeated here.

[0227] Method 3: The network device performs phase compensation on the service link and the feeder link.

[0228] In an implementation, the network device determines the time offset on the service link based on the reference position and the satellite position, and / or the network device determines the frequency offset on the service link based on the terminal position and the satellite position.

[0229] The reference position is a position point on the service link, and there is one reference position on one service link. The reference positions on different service links can be the same or different.

[0230] In another implementation, the network device performs phase compensation on the service link based on the time offset and / or the frequency offset on the service link. The network device determines the time offset on the feeder link based on the common TA parameter, and / or determines the frequency offset on the feeder link based on the network device position and the satellite position. The network device performs phase compensation on the feeder link based on the time offset and / or the frequency offset on the feeder link.

[0231] For details of the method, refer to the related content in the foregoing embodiments, which will not be repeated here.

[0232] It should be further noted that, in some embodiments, the standard can predefine the execution subject of phase compensation (i.e., whether the terminal or the network device performs the phase compensation), or more specifically, the standard can predefine that a certain execution subject (e.g., the terminal or the network device) performs phase compensation on a certain target link (e.g., the service link or the feeder link). In another embodiment, the network device can also instruct the terminal to perform phase compensation on the target link, or more specifically, the network device can also instruct the terminal to perform phase compensation on a certain target link (e.g., the service link or the feeder link). In general, the embodiments of the present application do not make specific limitations in this regard.

[0233] In the embodiments of the present disclosure, the terminal and the network device can perform phase compensation on the respective determined links, so that the phase of the compensated link maintains phase continuity, and thus the DMRS bundling can be used to improve the coverage of the channel.

[0234] It should be noted that the various embodiments / instances described above in relation to the present disclosure can be used in conjunction with the foregoing embodiments or independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principles are similar. In the present disclosure, some embodiments are described in conjunction with embodiments used together. It should be noted that such examples are not a limitation of the present disclosure.

[0235] Based on the same concept, the present disclosure also provides a phase compensation device.

[0236] It should be understood that the phase compensation device provided by the present disclosure includes the corresponding hardware structure and / or software modules for executing each function in order to achieve the above functions. In combination with the units and algorithm steps of each example disclosed in the present disclosure, the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solution of the present disclosure.

[0237] Figure 5 is a structural block diagram of an apparatus 500 provided by the present application. The apparatus 500 can be used to execute the phase compensation method described above. As shown in Figure 5 The apparatus 500 includes a determination module 501 and a compensation module 502.

[0238] The determination module 501 is configured to determine a target link.

[0239] The compensation module 502 is configured to perform phase compensation on the target link during repeated transmission of the physical channel.

[0240] In an embodiment, the compensation module 502 is specifically configured to perform phase compensation on the target link based on the phase offset of the target link during repeated transmission of the physical channel.

[0241] In an embodiment, the target link includes a service link and / or a feeder link.

[0242] In an embodiment, the phase offset of the target link is determined based on at least one of the following:

[0243] a time offset on the service link;

[0244] a frequency offset on the service link;

[0245] a time offset on the feeder link.

[0246] In an implementation, the frequency offset on the service link is determined based on at least the terminal position and the satellite position.

[0247] In an implementation, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcast by the network device; wherein the terminal communicates with the network device via the satellite.

[0248] In an implementation, the time offset on the feeder link is determined based on a common timing advance parameter.

[0249] In an implementation, the common timing advance parameter is located in system information broadcast by the network device.

[0250] In an implementation, the time offset on the service link is determined based on at least the terminal position and the satellite position.

[0251] In an implementation, the target link is determined based on at least one of:

[0252] a standard predefinition;

[0253] an indication by the network device;

[0254] capability information of the terminal.

[0255] Figure 6 is a structural block diagram of an apparatus 600 provided by the present application. The apparatus 600 can be used to execute the above-mentioned phase compensation method. As shown in Figure 6 the apparatus 600 includes a determination module 601 and a compensation module 602.

[0256] The determination module 601 is configured to determine a target link.

[0257] The compensation module 602 is configured to perform phase compensation on the target link when the physical channel is repeatedly transmitted.

[0258] In an implementation, the compensation module 602 is specifically configured to perform phase compensation on the target link based on the phase offset of the target link when the physical channel is repeatedly transmitted.

[0259] In an implementation, the target link includes a service link and / or a feeder link.

[0260] In an implementation, the phase offset of the target link is determined based on at least one of:

[0261] a time offset on the service link;

[0262] a frequency offset on the service link;

[0263] a time offset on the feeder link.

[0264] In an embodiment, the frequency offset on the feeder link is determined based on at least the terminal position and the satellite position.

[0265] In an embodiment, the terminal position is determined based on a global navigation satellite system, and / or the satellite position is determined based on satellite ephemeris information broadcast by the network device; wherein the terminal communicates with the network device via the satellite.

[0266] In an embodiment, the time offset on the feeder link is determined based on a common timing advance parameter.

[0267] In an embodiment, the common timing advance parameter is located in system information broadcast by the network device.

[0268] In an embodiment, the time offset on the service link is determined based on at least the reference position and the satellite position.

[0269] In an embodiment, the reference position is determined based on a report from the terminal, or the reference position is determined based on a beam in which the terminal is located.

[0270] In an embodiment, the phase offset of the target link is further determined based on the frequency offset on the feeder link.

[0271] In an embodiment, the frequency offset on the feeder link is determined based on at least a position of the network device and a position of the satellite.

[0272] In an embodiment, the target link is determined based on at least one of:

[0273] a standard predefinition;

[0274] an indication from the network device;

[0275] capability information of the terminal.

[0276] It should be noted that the apparatus 500 and the apparatus 600 can further include other modules, for example, a communication module. As to the apparatus in the above-mentioned embodiments, the specific manners in which the various modules perform operations have been described in detail in the embodiments of the method, and will not be described in detail here.

[0277] Figure 7 is a block diagram of an apparatus 700 provided by the present application. For example, the apparatus 700 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. The present application does not make a specific limitation on the specific form of the apparatus 700.

[0278] Reference is made to Figure 7The device 700 can include one or more of the following components: a processing component 702, a memory 704, a power supply component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0279] The processing component 702 typically controls overall operations of the device 700, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 702 can include one or more processors 720 to execute instructions to complete the steps of the methods described above, in whole or in part. Moreover, the processing component 702 can include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate the interaction between the multimedia component 708 and the processing component 702.

[0280] The memory 704 is configured to store various types of data to support operations of the device 700. Examples of these data include instructions to operate any applications or methods on the device 700, contact data, phonebook data, messages, pictures, videos, and so on. The memory 704 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0281] The power supply component 706 supplies electrical power for the various components of the device 700. The power supply component 706 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing electrical power for the device 700.

[0282] The multimedia component 708 includes a screen to provide an output interface between the device 700 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensors can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 708 includes a front camera and / or a back camera. The front camera and / or the back camera can receive external multimedia data when the device 700 is in an operation mode, such as a shooting mode or a video mode. Each of the front and back cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0283] The audio component 710 is configured to output and / or input audio signals. For example, the audio component 710 includes a microphone (MIC) that is configured to receive an external audio signal when the device 700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting audio signals.

[0284] The I / O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0285] The sensor component 714 includes one or more sensors for providing status assessments of various aspects of the device 700. For example, the sensor component 714 can detect an open / closed position of the device 700, relative positioning of components, such as a display and a keypad of the device 700, a change of position of the device 700 or a component of the device 700, presence or absence of user contact with the device 700, changes in orientation or acceleration / deceleration

[0286] The communication component 716 is configured to facilitate wired or wireless communication between the device 700 and other devices. The device 700 can access a wireless network based on a corresponding communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 716 receives broadcast signals or broadcast-related information from external broadcast management systems via a broadcast channel. In an example embodiment, the communication component 716 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, ultra-wideband (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0287] In exemplary embodiments, the apparatus 700 can be implemented using one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic devices, to perform the above methods.

[0288] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 704 including instructions, is also provided, which can be executed by the processor 720 of the apparatus 700 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0289] Figure 8 is a block diagram of an apparatus 800 for phase compensation according to an exemplary embodiment. For example, the apparatus 800 can be provided as a network device. Referring to Figure 8 , the apparatus 800 includes a processing component 822, which further includes one or more processors, and a memory resource represented by the memory 832, for storing instructions executable by the processing component 822, such as application programs. The application programs stored in the memory 832 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 822 is configured to execute the instructions to perform the above phase compensation methods.

[0290] The apparatus 800 can also include a power supply component 826 configured to perform power management of the apparatus 800, a wired or wireless network interface 850 configured to connect the apparatus 800 to a network, and an input output (I / O) interface 858. The apparatus 800 can operate based on an operating system stored in the memory 832, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0291] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 832 including instructions, is also provided, which can be executed by the processing component 822 of the apparatus 800 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0292] It should be further understood that "a plurality" or "a plurality of something" refers to two or more of that thing, and not to one of that thing. Similarly, "one or more of something" refers to one or more of that thing. By way of example, "a plurality of aspects" means two or more aspects. The terms "comprises", "comprising", "includes", "including", "contains", "containing" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, includes, contains or contains a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "has", "includes" or "contains" does not, without more constraints, preclude the existence of additional identical elements. Reference to items in the singular shall mean that there are one or more of those items, unless otherwise indicated. Any "combination" or "combination of something" means one or more of the things combined. The terms "another" and "an" are defined as meaning one or more unless explicitly indicated to the contrary or otherwise evident from the context. The terms "including", "comprising", "having" and "fronting" are defined as meaning "including but not limited to" or "comprising but not limited to", or is meant to cover the case where endless groups are "including", "comprising" other elements not specified, unless otherwise indicated.

[0293] It should be further understood that the terms "responsive to", "if", and the like are used herein generally to describe the relationship between one action and another action, and are not meant to limit the scope of the disclosure to only those responses that are in fact responsive to the other action. The terms "responsive to", "if", and the like are used herein generally to describe the relationship between one action and another action, and are not meant to limit the scope of the disclosure to only those responses that are in fact responsive to the other action.

[0294] It should be further understood that the terms "first", "second", and the like are used herein to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or importance. In fact, the terms "first", "second", and the like can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the disclosure.

[0295] It should be further understood that although the operations in the embodiments of the disclosure are described in a specific order in the drawings, it should not be understood as requiring the specific order or serial order to perform the operations, or requiring all the operations to be performed to obtain the desired results. In a specific environment, multi-tasking and parallel processing can be advantageous.

[0296] It should be understood that the present disclosure is not limited to the precise structures described above and illustrated in the drawings and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A phase compensation method, characterized in that, Applied to communication equipment, the method includes: Determine the target link, which includes a service link and / or a feeder link; Phase compensation is performed on the target link during repeated transmissions in the physical channel; Specifically, during repeated transmissions on the physical channel, phase compensation is performed on the target link, including: When the physical channel is repeatedly transmitted, phase compensation is performed on the target link based on the phase offset of the target link; The phase offset of the target link is determined based on the frequency offset on the service link, which is determined at least based on the terminal location and the satellite location; the terminal location is determined based on the Global Navigation Satellite System, and / or the satellite location is determined based on satellite ephemeris information broadcast by the network device; wherein the terminal communicates with the network device via satellite.

2. The method according to claim 1, characterized in that, The phase offset of the target link is also determined based on at least one of the following: Time offset on the service link; Time offset on the feeder link.

3. The method according to claim 2, characterized in that, The time offset on the feeder link is determined based on a common timing advance parameter.

4. The method according to claim 3, characterized in that, The common timing advance parameter is located in the system information broadcast by the network device.

5. The method according to claim 2 or 3, characterized in that, The communication device is a terminal; The time offset on the service link is determined at least based on the terminal location and the satellite location.

6. The method according to any one of claims 2 to 4, characterized in that, The communication device is a network device; The time offset on the service link is determined at least based on the reference position and the satellite position.

7. The method according to claim 6, characterized in that, The reference position is determined based on terminal reporting, and / or the reference position is determined based on the beam in which the terminal is located.

8. The method according to claim 5, characterized in that, The phase offset of the target link is also determined based on the frequency offset on the feeder link.

9. The method according to claim 8, characterized in that, The frequency offset on the feeder link is determined at least based on the location of the network equipment and the location of the satellite.

10. The method according to claim 1, characterized in that, The target link is determined based on at least one of the following methods: Standard predefined; Network device indication; Terminal capability information.

11. A phase compensation device, characterized in that, Applied to communication equipment, the device includes: A determination module is used to determine a target link, the target link including a service link and / or a feeder link; The compensation module is used to perform phase compensation on the target link when the physical channel is repeatedly transmitted. The compensation module performs phase compensation on the target link during repeated transmissions on the physical channel in the following manner: When the physical channel is repeatedly transmitted, phase compensation is performed on the target link based on the phase offset of the target link; The phase offset of the target link is determined based on the frequency offset on the service link, which is determined at least based on the terminal location and the satellite location; the terminal location is determined based on the Global Navigation Satellite System, and / or the satellite location is determined based on satellite ephemeris information broadcast by the network device; wherein the terminal communicates with the network device via satellite.

12. A phase compensation device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 10.

13. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the communication device, enable the communication device to perform the method described in any one of claims 1 to 10.

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