A CSI-RS configuration method and device, a satellite base station, and a storage medium

Abstract

Embodiments of the present application provide a CSI-RS configuration method and device, a satellite base station and a storage medium. The method comprises: determining the number of activated UEs and the traffic load of multiple wave positions of a satellite base station in a target detection period; determining the CSI-RS configuration mode corresponding to the multiple wave positions based on the number of activated UEs and the traffic load of the multiple wave positions, wherein the CSI-RS configuration mode comprises periodic CSI-RS configuration and CSI-RS transmission accompanying traffic; and determining the target CSI-RS configuration mode of the satellite base station according to the CSI-RS configuration mode corresponding to the multiple wave positions of the satellite base station. With dynamic CSI-RS configuration, the CSI-RS configuration mode suitable for the multiple wave positions is determined according to the number of activated UEs and the traffic load in the target detection period, and then the target CSI-RS configuration mode suitable for the satellite base station is determined more reasonably by comprehensively considering the CSI-RS configuration mode corresponding to the multiple wave positions of the satellite base station, thereby reducing resource waste when the load is light and reducing the occurrence of resource increase when the load is heavy.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a CSI-RS configuration method, apparatus, satellite base station, and storage medium. Background Technology

[0002] The Channel State Information Reference Signal (CSI-RS) is a reference signal in the downlink of 5G networks, primarily used for downlink channel sounding and measurement. Terminals calculate the Reference Signal Receiving Power (RSRP) and Signal-to-Interference Plus Noise Ratio (SINR) by measuring this signal and report the Channel Quality Indicator (CQI) to the base station. The base station refers to the CQI reported by the terminal to select the modulation and coding scheme (MCS) for the 5G terminal, which particularly affects the downlink codebook transmission method and determines the actual user experience rate. Therefore, CSI-RS coverage directly impacts the downlink user experience.

[0003] For terrestrial base stations, the network coverage radius is usually several hundred meters. In order to save downlink time and frequency resources, CSI-RS is designed as a cell-level beam that is wider than the synchronization signal and PBCH block (SSB). A certain number of CSI-RS beams can cover the entire cell.

[0004] For onboard base stations, due to limitations in coverage area and transmission power of onboard phased arrays in satellite communication, achieving a wide beamwidth covering multiple spectral positions with a single channel is quite difficult. Related technologies employ periodic scanning to cover all spectral positions within the cell.

[0005] However, the above scheme requires a set of time and frequency resources for each wave position. That is, the number of CSI-RS time and frequency resources is equal to the number of wave positions. If the CSI-RS configuration is not reasonable, it may lead to a waste of time and frequency resources. Summary of the Invention

[0006] This application provides a CSI-RS configuration method, apparatus, satellite base station, and storage medium for the rational configuration of CSI-RS.

[0007] In a first aspect, embodiments of this application provide a first CSI-RS configuration method, the method comprising:

[0008] Determine the number of active UEs and service load at multiple wavelengths of the satellite base station during the target detection period;

[0009] Based on the number of UEs activated and the service load of multiple wavelength positions, the CSI-RS configuration method corresponding to multiple wavelength positions is determined. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services.

[0010] The target CSI-RS configuration method of the satellite base station is determined based on the CSI-RS configuration method corresponding to multiple wavelengths of the satellite base station.

[0011] In one or more embodiments, based on the number of active UEs and service load for multiple wavelength positions, the CSI-RS configuration method corresponding to multiple wavelength positions is determined, including:

[0012] For the first wave position, the number of UEs activated in the first wave position is compared with a preset number, and the service load of the first wave position is compared with a preset load;

[0013] If the number of activated UEs in the first waveband is greater than the preset number, and / or the service load of the first waveband is greater than the preset load, then the CSI-RS configuration method corresponding to the first waveband is determined to be periodic CSI-RS configuration; or,

[0014] If the number of UEs activated in the first wave position is not greater than the preset number, and the service load of the first wave position is not greater than the preset load, then the CSI-RS configuration mode corresponding to the first wave position is determined to be CSI-RS sent along with the service.

[0015] In one or more embodiments, the target CSI-RS configuration of the satellite base station is determined based on the CSI-RS configuration of multiple wavelength positions of the satellite base station, including:

[0016] For the satellite base station, determine the proportion of the wavelengths configured in the periodic CSI-RS configuration to the total number of wavelengths.

[0017] If the wavelength ratio is greater than a preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be periodic CSI-RS configuration; or,

[0018] If the wavelet ratio is not greater than the preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be CSI-RS sent along with services.

[0019] In one or more embodiments, after determining the target CSI-RS configuration of the satellite base station, the method further includes:

[0020] Determine whether the target CSI-RS configuration of the satellite base station is the same as the current CSI-RS configuration of the satellite base station;

[0021] If they are different, adjust the CSI-RS configuration of the satellite base station.

[0022] In one or more embodiments, the CSI-RS configuration of the satellite base station is adjusted, including:

[0023] If the target CSI-RS configuration of the satellite base station is periodic CSI-RS configuration, then after the first duration, multiple wavelengths of the satellite base station will be adjusted to periodic CSI-RS configuration; or

[0024] If the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

[0025] In one or more embodiments, adjusting multiple wavelengths of the satellite base station to a periodic CSI-RS configuration further includes:

[0026] Based on ephemeris information and UE location, determine the periodic CSI-RS resource corresponding to the UE, and send the periodic CSI-RS resource to the corresponding UE through RRC reconfiguration;

[0027] Adjusting multiple wavelengths of the satellite base station to transmit CSI-RS along with services also includes:

[0028] The frequency information of CSI-RS is sent to the corresponding UE via RRC reconfiguration, and the transmission time of CSI-RS is sent to the corresponding UE via DCI.

[0029] In one or more embodiments, before determining the number of UEs activated and the service load at multiple wavelengths of the satellite base station during the target detection period, the method further includes:

[0030] When the satellite base station is turned on, determine whether there is historical configuration information;

[0031] If historical configuration information exists, and the current time falls within the historical detection period specified in the historical configuration information, then the satellite base station will be configured with the CSI-RS configuration method corresponding to the historical configuration information; or,

[0032] If there is no historical configuration information, or if the current time is not within the historical detection period in the historical configuration information, the satellite base station will be configured as the preset CSI-RS configuration mode.

[0033] Secondly, embodiments of this application provide a first CSI-RS configuration device, the device comprising:

[0034] The wave position information determination module is used to determine the number of UEs activated and the service load of multiple wave positions of the satellite base station during the target detection period;

[0035] The wave position configuration determination module is used to determine the CSI-RS configuration method corresponding to multiple wave positions based on the number of UEs activated and the service load of multiple wave positions. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services.

[0036] The CSI-RS configuration module is used to determine the target CSI-RS configuration mode of the satellite base station based on the CSI-RS configuration mode corresponding to multiple wavelengths of the satellite base station.

[0037] Thirdly, embodiments of this application provide a satellite base station, including at least one processor and at least one memory, wherein the memory stores a computer program, and when the program is executed by the processor, the processor performs the CSI-RS configuration method described in any of the first aspects above.

[0038] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program executable by a processor, which, when run on the processor, causes the processor to perform the CSI-RS configuration method described in any of the first aspects above.

[0039] The above scheme adopts dynamic CSI-RS configuration. Based on the number of UEs activated and the service load within the target detection period, it determines multiple suitable CSI-RS configuration methods for different wavelengths. Then, by combining the CSI-RS configuration methods corresponding to multiple wavelengths of the satellite base station, it more rationally determines the target CSI-RS configuration method suitable for the satellite base station. It flexibly switches between periodic CSI-RS configuration and accompanying service transmission CSI-RS, reducing resource waste when the load is light and resource increases when the load is heavy. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the CSI-RS beam configuration in a ground base station provided in an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of UE-level CSI-RS time and frequency resources provided in the embodiments of this application;

[0043] Figure 3 A flowchart illustrating the first CSI-RS configuration method provided in this application embodiment;

[0044] Figure 4 A schematic diagram of accompanying service transmission CSI-RS provided for embodiments of this application;

[0045] Figure 5 A schematic diagram of CSI-RS time and frequency resources for accompanying service transmission provided in this application embodiment;

[0046] Figure 6 A flowchart illustrating the second CSI-RS configuration method provided in this application embodiment;

[0047] Figure 7 A flowchart illustrating the third CSI-RS configuration method provided in this application embodiment;

[0048] Figure 8 A flowchart illustrating the fourth CSI-RS configuration method provided in this application embodiment;

[0049] Figure 9 This is a schematic diagram of the structure of the CSI-RS configuration device provided in the embodiments of this application;

[0050] Figure 10 This is a schematic diagram of the structure of a satellite base station provided in an embodiment of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two devices. Those skilled in the art can understand the specific meaning of the above term in this application based on the specific circumstances.

[0054] CSI-RS is a reference signal in the downlink of 5G networks, mainly used for downlink channel detection and channel measurement.

[0055] For terrestrial base stations, the network coverage radius is typically several hundred meters. To conserve downlink time-frequency resources, CSI-RS is designed with a wider cell-level beamwidth than SSB; a certain number of CSI-RS beams can cover the entire cell. (See also...) Figure 1 As shown, the narrow beam is the SSB beam (beams 0-7), and the fan-shaped beam is the CSI-RS beam (beams 11-14). The entire cell can be covered by 4 sets of CSI-RS.

[0056] For onboard base stations, due to limitations in coverage area and transmission power of onboard phased arrays in satellite communication, achieving a wide beamwidth covering multiple spectral positions with a single channel is quite difficult. Related technologies employ periodic scanning to cover all spectral positions within the cell.

[0057] However, the above scheme requires a set of time and frequency resources for each wave position. That is, the number of CSI-RS time and frequency resources is equal to the number of wave positions. If the CSI-RS configuration is not reasonable, it may lead to a waste of time and frequency resources.

[0058] See Figure 2 As shown, in some embodiments, CSI-RS adopts a UE-level configuration, where each UE uses a different resource element (RE) in a resource block (RB)-n, meaning each square corresponds to one UE. When there are multiple users in the same beam, different UEs use different resources. In addition, to save resources, a non-periodic configuration is usually used, which needs to be activated through the Media Access Control (MAC) control element (CE) when in use.

[0059] However, when the number of users / load is high, a significant amount of time and frequency resources are still required. Different UEs occupy different resources and have different activation times, so the base station needs to maintain a CSI-RS transmission and reporting mechanism for each UE. This approach is limited by scheduling granularity. Except for Space Division Multiple Input Multiple Output (MIMO), only UEs on the same wavelength can be scheduled at the same time within a minimum scheduling granularity. Therefore, this scheme cannot take into account multiple wavelengths. Furthermore, when the service load is heavy, the downlink control signaling (L2 signaling) at the MAC layer increases significantly.

[0060] In view of this, embodiments of this application propose a CSI-RS configuration method, apparatus, satellite base station, and storage medium. The method includes: determining the number of UEs activated and the service load of multiple wavelengths of the satellite base station during a target detection period; determining the CSI-RS configuration mode corresponding to the multiple wavelengths based on the number of UEs activated and the service load, wherein the CSI-RS configuration mode includes periodic CSI-RS configuration and CSI-RS transmission accompanying services; and determining the target CSI-RS configuration mode of the satellite base station according to the CSI-RS configuration mode corresponding to the multiple wavelengths of the satellite base station.

[0061] The above scheme adopts dynamic CSI-RS configuration. Based on the number of UEs activated and the service load within the target detection period, it determines multiple suitable CSI-RS configuration methods for different wavelengths. Then, by combining the CSI-RS configuration methods corresponding to multiple wavelengths of the satellite base station, it more rationally determines the target CSI-RS configuration method suitable for the satellite base station. It flexibly switches between periodic CSI-RS configuration and accompanying service transmission CSI-RS, reducing resource waste when the load is light and resource increases when the load is heavy.

[0062] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0063] Figure 3 A flowchart illustrating the first CSI-RS configuration method provided in this application embodiment is shown below. Figure 3 As shown, it includes the following steps:

[0064] Step S301: Determine the number of UEs activated and the service load of multiple wavelengths of the satellite base station during the target detection period.

[0065] In this embodiment, dynamic CSI-RS configuration is adopted. Since the number of users and the load affect resource consumption, the number of UEs activated and the service load of multiple wavelengths of the satellite base station are determined for the target detection period, and the corresponding CSI-RS configuration method is further determined.

[0066] This embodiment does not specifically limit the detection period. For example, each preset time period can be considered as a detection period, and the current detection period can be used as the target detection period.

[0067] For example, the number of UEs activated in a wavelet is the average number of UEs activated in that wavelet during the target detection period; the service load of a wavelet is the average RB utilization rate in that wavelet during the target detection period.

[0068] Step S302: Based on the number of UEs activated and the service load of multiple wavelength positions, determine the CSI-RS configuration method corresponding to multiple wavelength positions.

[0069] The CSI-RS configuration methods include periodic CSI-RS configuration and CSI-RS transmission accompanying services.

[0070] As mentioned above, the number of users and the load affect resource consumption; based on this, according to the number of UEs activated and the service load of multiple wavelengths, it can be determined whether multiple wavelengths require more signaling resources and time-frequency resources, and thus determine the appropriate CSI-RS configuration method for multiple wavelengths.

[0071] In this embodiment, switching is performed between periodic CSI-RS configuration and accompanying service CSI-RS transmission. For accompanying service CSI-RS transmission, CSI-RS is transmitted together with the Physical Downlink Shared Channel (PDSCH) carrying downlink services. When there is downlink service, the downlink service is scheduled to transmit CSI-RS simultaneously. UEs within a beam use the same time-frequency resources, and multiple service beams transmitted simultaneously at the same time when the spatial separation requirement is met also use the same time-frequency resources.

[0072] See Figure 4 As shown, assuming that at a certain scheduling time, the satellite base station simultaneously transmits beam 1 and beam 2, beam 1 and beam 2 use the same time-frequency resources. UE1, UE2, UE6, and UE7, which are within the coverage area of ​​these two service beams, will transmit CSI-RS. However, UE3, UE4, and UE5, which are outside the coverage area of ​​these two service beams, will not receive CSI-RS and will only receive it when other service beams covering these UEs are transmitted. For simplicity, each scheduled service RB is configured with a RE for transmitting CSI-RS.

[0073] The above Figure 4 This is merely an illustrative example; in practice, more or fewer beams may be used to cover more or fewer UEs.

[0074] See Figure 5 As shown, when a UE accesses the network, the frequency resources are communicated to the UE via RRC reconfiguration. The frequency domain can be any RE in the last column of symbols, but to avoid overlap with Channel State Information Reference Signal (CSI-IM) and to prevent interruption of PDSCH transmission, it can be configured to be the last RE in the last symbol. Figure 5 (The shaded squares are shown).

[0075] Step S303: Determine the target CSI-RS configuration method of the satellite base station according to the CSI-RS configuration method corresponding to the multiple wavelengths of the satellite base station.

[0076] In practice, satellite base stations have multiple wavelengths, and the CSI-RS configuration methods suitable for different wavelengths may be the same or different. Therefore, by comprehensively considering the CSI-RS configuration methods corresponding to the multiple wavelengths of the satellite base station, the target CSI-RS configuration method suitable for the satellite base station can be determined more reasonably.

[0077] The above scheme adopts dynamic CSI-RS configuration. Based on the number of UEs activated and the service load within the target detection period, it determines multiple suitable CSI-RS configuration methods for different wavelengths. Then, by combining the CSI-RS configuration methods corresponding to multiple wavelengths of the satellite base station, it more rationally determines the target CSI-RS configuration method suitable for the satellite base station. It flexibly switches between periodic CSI-RS configuration and accompanying service transmission CSI-RS, reducing resource waste when the load is light and resource increases when the load is heavy.

[0078] In one or more embodiments, step S302 described above can be implemented in, but is not limited to, the following ways:

[0079] For the first wave position, the number of UEs activated in the first wave position is compared with a preset number, and the service load of the first wave position is compared with a preset load;

[0080] If the number of activated UEs in the first waveband is greater than the preset number, and / or the service load of the first waveband is greater than the preset load, then the CSI-RS configuration method corresponding to the first waveband is determined to be periodic CSI-RS configuration; or,

[0081] If the number of UEs activated in the first wave position is not greater than the preset number, and the service load of the first wave position is not greater than the preset load, then the CSI-RS configuration mode corresponding to the first wave position is determined to be CSI-RS sent along with the service.

[0082] As mentioned above, the number of users and the load affect resource consumption. Based on this, this embodiment sets a preset quantity and a preset load. The number of UEs activated in a wave position is compared with the preset quantity, and the service load of the wave position is compared with the preset load.

[0083] If the number of active UEs in a wavelet exceeds the preset number, it indicates that there are many users in that wavelet. Sending CSI-RS via RRC reconfiguration and DCI notification requires more signaling resources, making periodic CSI-RS configuration more suitable for this wavelet. If the service load of a wavelet exceeds the preset load, it indicates that the service load requires more RBs. In this scenario, configuring one RE per RB to transmit CSI-RS would waste time and frequency resources, making periodic CSI-RS configuration more suitable for this wavelet. Conversely, if the number of active UEs in a wavelet is less than the preset number, it indicates that the wavelet does not require more signaling resources and has a lighter load, making CSI-RS transmission along with services more suitable for this wavelet.

[0084] Therefore, if at least one of the following conditions is met, the CSI-RS configuration method corresponding to the wave position is determined to be periodic CSI-RS configuration; if neither of these conditions is met, the CSI-RS configuration method corresponding to the wave position is determined to be CSI-RS sent along with the service.

[0085] The above scheme compares the number of activated UEs in a wave position with the preset number, and compares the service load of the wave position with the preset load. Combining the signaling resource requirements and load conditions of UEs within the wave position, it accurately and reasonably selects the CSI-RS configuration method suitable for multiple wave positions.

[0086] In one or more embodiments, step S303 described above can be implemented in, but is not limited to, the following ways:

[0087] For the satellite base station, determine the proportion of the wavelengths configured in the periodic CSI-RS configuration to the total number of wavelengths.

[0088] If the wavelength ratio is greater than a preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be periodic CSI-RS configuration; or

[0089] If the wavelet ratio is not greater than the preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be CSI-RS sent along with services.

[0090] As mentioned above, satellite base stations have multiple wavelengths, and the CSI-RS configuration methods suitable for different wavelengths may be the same or different. It is necessary to comprehensively consider the CSI-RS configuration methods corresponding to the multiple wavelengths of the satellite base station. Based on this, this embodiment sets a preset ratio. By comparing the proportion of wavelengths configured for periodic CSI-RS to the total number of wavelengths with this preset ratio, if the proportion of wavelengths configured for periodic CSI-RS is greater than the preset ratio, it indicates that there are more wavelengths suitable for periodic CSI-RS configuration. To meet the needs of these wavelengths, the satellite base station is more suitable for periodic CSI-RS configuration. Conversely, if the proportion of wavelengths configured for periodic CSI-RS is not greater than the preset ratio, it indicates that there are more wavelengths suitable for CSI-RS transmission accompanying services. To meet the needs of these wavelengths, the satellite base station is more suitable for CSI-RS transmission accompanying services.

[0091] The above scheme selects a target CSI-RS configuration method suitable for most waveforms by setting a preset ratio and comparing the ratio of the waveforms configured in the periodic CSI-RS configuration to the waveforms of multiple waveforms with the preset ratio.

[0092] Figure 6 A flowchart illustrating the second CSI-RS configuration method provided in this application embodiment is shown below. Figure 6 As shown, it includes the following steps:

[0093] Step S601: Determine the number of UEs activated and the service load of multiple wavelengths of the satellite base station during the target detection period.

[0094] Step S602: Based on the number of UEs activated and the service load of multiple wavelength positions, determine the CSI-RS configuration method corresponding to multiple wavelength positions.

[0095] The CSI-RS configuration methods include periodic CSI-RS configuration and CSI-RS transmission accompanying services.

[0096] Step S603: Determine the target CSI-RS configuration method of the satellite base station according to the CSI-RS configuration method corresponding to the multiple wavelengths of the satellite base station.

[0097] The specific implementation of steps S601 to S603 can be found in the above embodiments, and will not be repeated here.

[0098] Step S604: Determine whether the target CSI-RS configuration mode of the satellite base station is the same as the current CSI-RS configuration mode of the satellite base station.

[0099] During implementation, the target CSI-RS configuration method of the satellite base station may be the same as or different from the current CSI-RS configuration method of the satellite base station. If the target CSI-RS configuration method is the same as the current CSI-RS configuration method, the current CSI-RS configuration method can be maintained. If the target CSI-RS configuration method is different from the current CSI-RS configuration method, the CSI-RS configuration method of the satellite base station also needs to be adjusted, that is, step S605 is executed.

[0100] Step S605: If different, adjust the CSI-RS configuration of the satellite base station.

[0101] For example, if the target CSI-RS configuration is different from the current CSI-RS configuration, the CSI-RS configuration of the satellite base station needs to be adjusted to the target CSI-RS configuration.

[0102] In one or more embodiments, if the target CSI-RS configuration of the satellite base station is periodic CSI-RS configuration, then after a first duration, multiple wavelengths of the satellite base station are adjusted to periodic CSI-RS configuration;

[0103] If the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

[0104] In implementation, ping-pong handover may occur between different CSI-RS configuration methods. Based on this, this embodiment sets a hysteresis time - a first duration (m slots) and a second duration (n slots). If the target CSI-RS configuration method of the satellite base station is periodic CSI-RS configuration, after waiting for the first duration, multiple wavelengths of the satellite base station are adjusted to periodic CSI-RS configuration. If the target CSI-RS configuration method of the satellite base station is CSI-RS with accompanying service transmission, after waiting for the second duration, multiple wavelengths of the satellite base station are adjusted to CSI-RS with accompanying service transmission.

[0105] This embodiment does not specifically limit the hysteresis time; the first duration and the second duration can be the same or different.

[0106] The above solution reduces the ping-pong handover between periodic CSI-RS configuration and accompanying service transmission CSI-RS by waiting for delay time.

[0107] Figure 7 A flowchart illustrating the third CSI-RS configuration method provided in this application embodiment is shown below. Figure 7 As shown, it includes the following steps:

[0108] Step S701: Determine the number of UEs activated and the service load of multiple wavelengths of the satellite base station during the target detection period.

[0109] Step S702: Based on the number of UEs activated and the service load of multiple wavelength positions, determine the CSI-RS configuration method corresponding to multiple wavelength positions.

[0110] The CSI-RS configuration methods include periodic CSI-RS configuration and CSI-RS transmission accompanying services.

[0111] Step S703: Determine the target CSI-RS configuration method of the satellite base station according to the CSI-RS configuration method corresponding to the multiple wavelengths of the satellite base station.

[0112] Step S704: If the target CSI-RS configuration mode of the satellite base station is different from the current CSI-RS configuration mode of the satellite base station, and the target CSI-RS configuration mode of the satellite base station is periodic CSI-RS configuration, then after the first duration, the multiple wavelengths of the satellite base station are adjusted to periodic CSI-RS configuration.

[0113] The specific implementation of steps S701 to S704 can be found in the above embodiments, and will not be repeated here.

[0114] Step S705: Based on the ephemeris information and the UE location, determine the periodic CSI-RS resource corresponding to the UE, and send the periodic CSI-RS resource to the corresponding UE through RRC reconfiguration.

[0115] In periodic CSI-RS configuration, in order to avoid the problem of frequent resource set reconfiguration caused by the high-speed movement of satellite base stations, the satellite base station will refer to the UE's location and ephemeris information to predict possible future resources. That is, based on the ephemeris information and the UE's location, a cell-level periodic resource set is selected for the UE, and the UE is notified of reconfiguration through RRC.

[0116] Figure 8 A flowchart illustrating the fourth CSI-RS configuration method provided in this application embodiment is shown below. Figure 8 As shown, it includes the following steps:

[0117] Step S801: Determine the number of UEs activated and the service load of multiple wavelengths of the satellite base station during the target detection period.

[0118] Step S802: Based on the number of UEs activated and the service load of multiple wavelength positions, determine the CSI-RS configuration method corresponding to multiple wavelength positions.

[0119] The CSI-RS configuration methods include periodic CSI-RS configuration and CSI-RS transmission accompanying services.

[0120] Step S803: Determine the target CSI-RS configuration method of the satellite base station according to the CSI-RS configuration method corresponding to the multiple wavelengths of the satellite base station.

[0121] Step S804: If the target CSI-RS configuration mode of the satellite base station is different from the current CSI-RS configuration mode of the satellite base station, and the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, the multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

[0122] The specific implementation of steps S801 to S804 can be found in the above embodiments, and will not be repeated here.

[0123] Step S805: Send the frequency information of CSI-RS to the corresponding UE via RRC reconfiguration, and send the transmission time of CSI-RS to the corresponding UE via DCI.

[0124] In practice, frequency information is notified to the UE via RRC reconfiguration; in the time domain, it corresponds to the slot where the UE's assigned PDSCH is located, and is notified to the UE via DCI.

[0125] like Figure 9 As shown, this application embodiment provides a CSI-RS configuration device 900, which includes:

[0126] The wave position information determination module 901 is used to determine the number of UEs activated and the service load of multiple wave positions of the satellite base station during the target detection period;

[0127] The waveform configuration determination module 902 is used to determine the CSI-RS configuration method corresponding to multiple waveforms based on the number of UEs activated and the service load of multiple waveforms. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services.

[0128] CSI-RS configuration module 903 is used to determine the target CSI-RS configuration mode of the satellite base station according to the CSI-RS configuration mode corresponding to multiple wavelengths of the satellite base station.

[0129] In one or more embodiments, the wave position configuration determination module 902 is specifically used for:

[0130] For the first wave position, the number of UEs activated in the first wave position is compared with a preset number, and the service load of the first wave position is compared with a preset load;

[0131] If the number of activated UEs in the first waveband is greater than the preset number, and / or the service load of the first waveband is greater than the preset load, then the CSI-RS configuration method corresponding to the first waveband is determined to be periodic CSI-RS configuration; or,

[0132] If the number of UEs activated in the first wave position is not greater than the preset number, and the service load of the first wave position is not greater than the preset load, then the CSI-RS configuration mode corresponding to the first wave position is determined to be CSI-RS sent along with the service.

[0133] In one or more embodiments, the CSI-RS configuration module 903 is specifically used for:

[0134] For the satellite base station, determine the proportion of the wavelengths configured in the periodic CSI-RS configuration to the total number of wavelengths.

[0135] If the wavelength ratio is greater than a preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be periodic CSI-RS configuration; or

[0136] If the wavelet ratio is not greater than the preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be CSI-RS sent along with services.

[0137] In one or more embodiments, after determining the target CSI-RS configuration method of the satellite base station, the CSI-RS configuration module 903 is further configured to:

[0138] Determine whether the target CSI-RS configuration of the satellite base station is the same as the current CSI-RS configuration of the satellite base station;

[0139] If they are different, adjust the CSI-RS configuration of the satellite base station.

[0140] In one or more embodiments, the CSI-RS configuration module 903 is specifically used for:

[0141] If the target CSI-RS configuration of the satellite base station is periodic CSI-RS configuration, then after the first duration, multiple wavelengths of the satellite base station will be adjusted to periodic CSI-RS configuration; or

[0142] If the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

[0143] In one or more embodiments, the CSI-RS configuration module 903 is further configured to:

[0144] Based on ephemeris information and UE location, determine the periodic CSI-RS resource corresponding to the UE, and send the periodic CSI-RS resource to the corresponding UE through RRC reconfiguration;

[0145] The CSI-RS configuration module 903 is also used for:

[0146] The frequency information of CSI-RS is sent to the corresponding UE through RRC reconfiguration, and the transmission time of CSI-RS is sent to the corresponding UE through downlink control information (DCI).

[0147] In one or more embodiments, before the wave position information determination module 901 determines the number of UEs activated and the service load of multiple wave positions of the satellite base station during the target detection period, the CSI-RS configuration module 903 is further configured to:

[0148] When the satellite base station is turned on, determine whether there is historical configuration information;

[0149] If historical configuration information exists, and the current time falls within the historical detection period specified in the historical configuration information, then the satellite base station will be configured with the CSI-RS configuration method corresponding to the historical configuration information; or

[0150] If there is no historical configuration information, or if the current time is not within the historical detection period in the historical configuration information, the satellite base station will be configured as the preset CSI-RS configuration mode.

[0151] Since this device is the same as the device in the method of this application embodiment, and the principle of the device in solving the problem is similar to that of the method, the implementation of the device can be referred to the implementation of the method, and the repeated parts will not be described again.

[0152] Based on the same technical concept, this application also provides a satellite base station 1000, such as... Figure 10 As shown, it includes at least one processor 1001 and a memory 1002 connected to at least one processor. In this embodiment, the specific connection medium between the processor 1001 and the memory 1002 is not limited. Figure 10 Taking the connection between processor 1001 and memory 1002 via bus 1003 as an example. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 10 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0153] The processor 1001 serves as the control center of the satellite base station. It connects to various parts of the base station via various interfaces and lines, and performs data processing by running or executing instructions stored in the memory 1002 and accessing data stored in the memory 1002. Optionally, the processor 1001 may include one or more processing units. The processor 1001 may integrate an application processor and a modem processor. The application processor primarily handles the operating system, user interface, and applications, while the modem processor primarily handles issuing instructions. It is understood that the modem processor may not be integrated into the processor 1001. In some embodiments, the processor 1001 and the memory 1002 may be implemented on the same chip; in other embodiments, they may be implemented on separate chips.

[0154] Processor 1001 can be a general-purpose processor, such as a CPU, digital signal processor, application-specific integrated circuit (ASIC), field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the CSI-RS configuration method embodiments can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0155] Memory 1002, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. Memory 1002 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic memory, magnetic disk, optical disk, etc. Memory 1002 can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. In the embodiments of this application, memory 1002 can also be a circuit or any other device capable of implementing storage functions for storing program instructions and / or data.

[0156] In this embodiment, the memory 1002 stores a computer program, which, when executed by the processor 1001, causes the processor 1001 to perform the following:

[0157] Determine the number of active UEs and service load at multiple wavelengths of the satellite base station during the target detection period;

[0158] Based on the number of UEs activated and the service load of multiple wavelength positions, the CSI-RS configuration method corresponding to multiple wavelength positions is determined. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services.

[0159] The target CSI-RS configuration method of the satellite base station is determined based on the CSI-RS configuration method corresponding to multiple wavelengths of the satellite base station.

[0160] In one or more embodiments, processor 1001 specifically performs:

[0161] For the first wave position, the number of UEs activated in the first wave position is compared with a preset number, and the service load of the first wave position is compared with a preset load;

[0162] If the number of activated UEs in the first waveband is greater than the preset number, and / or the service load of the first waveband is greater than the preset load, then the CSI-RS configuration method corresponding to the first waveband is determined to be periodic CSI-RS configuration; or,

[0163] If the number of UEs activated in the first wave position is not greater than the preset number, and the service load of the first wave position is not greater than the preset load, then the CSI-RS configuration mode corresponding to the first wave position is determined to be CSI-RS sent along with the service.

[0164] In one or more embodiments, processor 1001 specifically performs:

[0165] For the satellite base station, determine the proportion of the wavelengths configured in the periodic CSI-RS configuration to the total number of wavelengths.

[0166] If the wavelength ratio is greater than a preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be periodic CSI-RS configuration; or

[0167] If the wavelet ratio is not greater than the preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be CSI-RS sent along with services.

[0168] In one or more embodiments, after determining the target CSI-RS configuration of the satellite base station, the processor 1001 further executes:

[0169] Determine whether the target CSI-RS configuration of the satellite base station is the same as the current CSI-RS configuration of the satellite base station;

[0170] If they are different, adjust the CSI-RS configuration of the satellite base station.

[0171] In one or more embodiments, processor 1001 specifically performs:

[0172] If the target CSI-RS configuration of the satellite base station is periodic CSI-RS configuration, then after the first duration, multiple wavelengths of the satellite base station will be adjusted to periodic CSI-RS configuration; or

[0173] If the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

[0174] In one or more embodiments, the processor 1001 further performs the following: (The text abruptly ends here, so the translation stops as well.)

[0175] Based on ephemeris information and UE location, determine the periodic CSI-RS resource corresponding to the UE, and send the periodic CSI-RS resource to the corresponding UE through RRC reconfiguration;

[0176] The processor 1001 further performs the following: Adjusting multiple wavelengths of the satellite base station to transmit CSI-RS accompanying services.

[0177] The frequency information of CSI-RS is sent to the corresponding UE through RRC reconfiguration, and the transmission time of CSI-RS is sent to the corresponding UE through downlink control information (DCI).

[0178] In one or more embodiments, before determining the number of UEs activated and the service load at multiple spectral positions of the satellite base station during the target detection period, the processor 1001 further performs:

[0179] When the satellite base station is turned on, determine whether there is historical configuration information;

[0180] If historical configuration information exists, and the current time falls within the historical detection period specified in the historical configuration information, then the satellite base station will be configured with the CSI-RS configuration method corresponding to the historical configuration information; or

[0181] If there is no historical configuration information, or if the current time is not within the historical detection period in the historical configuration information, the satellite base station will be configured as the preset CSI-RS configuration mode.

[0182] Since the satellite base station is the same satellite base station in the method of this application embodiment, and the principle of the satellite base station in solving the problem is similar to that of the method, the implementation of the satellite base station can refer to the implementation of the method, and the repeated parts will not be described again.

[0183] Based on the same technical concept, embodiments of this application also provide a computer-readable storage medium storing a computer program executable by a processor, which, when run on the processor, causes the processor to perform the steps of the CSI-RS configuration method described above.

[0184] In some alternative implementations, various aspects of the CSI-RS configuration method provided in this application may also be implemented as a program product containing computer-executable instructions that, when the program product is run on a computer device, cause the computer device to perform the steps of the CSI-RS configuration method according to the various exemplary embodiments of this application described above.

[0185] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0186] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0187] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0188] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0189] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0190] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for configuring a Channel State Information Reference Signal (CSI-RS), characterized in that, The method includes: Determine the number of active UEs and service load at multiple wavelengths of the satellite base station during the target detection period; Based on the number of UEs activated and the service load of multiple wavelength positions, the CSI-RS configuration method corresponding to multiple wavelength positions is determined. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services. The target CSI-RS configuration method of the satellite base station is determined based on the CSI-RS configuration method corresponding to multiple wavelengths of the satellite base station.

2. The method as described in claim 1, characterized in that, Based on the number of active UEs and service load across multiple wavelengths, the CSI-RS configuration method corresponding to multiple wavelengths is determined, including: For the first wave position, the number of UEs activated in the first wave position is compared with a preset number, and the service load of the first wave position is compared with a preset load; If the number of activated UEs in the first waveband is greater than the preset number, and / or the service load of the first waveband is greater than the preset load, then the CSI-RS configuration method corresponding to the first waveband is determined to be periodic CSI-RS configuration; or, If the number of UEs activated in the first wave position is not greater than the preset number, and the service load of the first wave position is not greater than the preset load, then the CSI-RS configuration mode corresponding to the first wave position is determined to be CSI-RS sent along with the service.

3. The method as described in claim 1, characterized in that, Based on the CSI-RS configuration methods corresponding to multiple wavelengths of the satellite base station, the target CSI-RS configuration method of the satellite base station is determined, including: For the satellite base station, determine the proportion of the wavelengths configured in the periodic CSI-RS configuration to the total number of wavelengths. If the wavelength ratio is greater than a preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be periodic CSI-RS configuration; or, If the wavelet ratio is not greater than the preset ratio, then the target CSI-RS configuration mode of the satellite base station is determined to be CSI-RS sent along with services.

4. The method as described in claim 1, characterized in that, After determining the target CSI-RS configuration method of the satellite base station, the following is also included: Determine whether the target CSI-RS configuration of the satellite base station is the same as the current CSI-RS configuration of the satellite base station; If they are different, adjust the CSI-RS configuration of the satellite base station.

5. The method as described in claim 4, characterized in that, Adjusting the CSI-RS configuration of satellite base stations includes: If the target CSI-RS configuration of the satellite base station is periodic CSI-RS configuration, then after the first duration, multiple wavelengths of the satellite base station will be adjusted to periodic CSI-RS configuration; or If the target CSI-RS configuration mode of the satellite base station is to transmit CSI-RS along with services, then after the second duration, multiple wavelengths of the satellite base station will be adjusted to transmit CSI-RS along with services.

6. The method as described in claim 5, characterized in that, Adjusting multiple wavelengths of the satellite base station to a periodic CSI-RS configuration also includes: Based on ephemeris information and UE location, determine the periodic CSI-RS resource corresponding to the UE, and send the periodic CSI-RS resource to the corresponding UE through Radio Resource Control (RRC) reconfiguration; Adjusting multiple wavelengths of the satellite base station to transmit CSI-RS along with services also includes: The frequency information of CSI-RS is sent to the corresponding UE through RRC reconfiguration, and the transmission time of CSI-RS is sent to the corresponding UE through downlink control information (DCI).

7. The method as described in claim 1, characterized in that, Before determining the number of active UEs and service load at multiple wavelengths of the satellite base station during the target detection period, the following steps are also included: When the satellite base station is turned on, determine whether there is historical configuration information; If historical configuration information exists, and the current time falls within the historical detection period specified in the historical configuration information, then the satellite base station will be configured with the CSI-RS configuration method corresponding to the historical configuration information; or If there is no historical configuration information, or if the current time is not within the historical detection period in the historical configuration information, the satellite base station will be configured as the preset CSI-RS configuration mode.

8. A CSI-RS configuration device, characterized in that, The device includes: The wave position information determination module is used to determine the number of UEs activated and the service load of multiple wave positions of the satellite base station during the target detection period; The wave position configuration determination module is used to determine the CSI-RS configuration method corresponding to multiple wave positions based on the number of UEs activated and the service load of multiple wave positions. The CSI-RS configuration method includes periodic CSI-RS configuration and CSI-RS sent with accompanying services. The CSI-RS configuration module is used to determine the target CSI-RS configuration mode of the satellite base station based on the CSI-RS configuration mode corresponding to multiple wavelengths of the satellite base station.

9. A satellite base station, characterized in that, It includes at least one processor and at least one memory, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores a computer program executable by a computer, which, when run on the computer, causes the computer to perform the method as described in any one of claims 1 to 7.

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