Satellite antenna control channel coverage enhancement method based on dynamic beam broadening

Abstract

This invention belongs to the field of satellite communication technology, and particularly relates to a method for enhancing satellite antenna control channel coverage based on dynamic beamspan. The method includes: determining the number of symbols and symbol positions of the uplink and downlink control channels to initialize the satellite antenna control channels; wherein the number of symbols and symbol positions of the uplink and downlink control channels correspond to the symbol time slots of the initialized satellite antenna control channels; judging scheduling events based on the initialized satellite antenna control channels to determine the beamspanning mode of the uplink and downlink control channels; and transmitting and / or receiving the uplink control channels after beamspanning in the symbol time slots of the initialized satellite antenna control channels, thereby completing the satellite antenna control channel coverage enhancement. This invention achieves effective coverage of the access beam area by the uplink and downlink control channels of the data beam, thereby eliminating uplink scheduling and uplink periodic signal blind spots.

Description

Technical Field

[0001] This invention belongs to the field of satellite communication technology, and particularly relates to a method for enhancing the coverage of satellite antenna control channels based on dynamic beamwidth. Background Technology

[0002] As sixth-generation mobile communication technology (6G) moves towards the goal of integrated space-ground global coverage, low Earth orbit satellite communication systems have become an important technology for achieving seamless global connectivity due to their low latency, high bandwidth, and potential for global coverage. To maximize the service capacity and coverage of a single satellite, modern high-throughput satellites generally employ multi-beam antenna technology.

[0003] Under this architecture, two different beam types are defined, each corresponding to a different service type, as follows: Access beam: The beamwidth is wider to cover a wider geographical area and meet the initial access and paging needs of a large number of user terminals. Due to the large coverage area, only low-order modulation methods, such as quadrature phase shift keying (QPSK), can usually be used, which limits the data transmission rate.

[0004] Data beam: The beamwidth is narrow, the energy is concentrated, and the coverage area is small, but it can provide a high signal-to-noise ratio link for users within the coverage area. It can adopt higher-order modulation methods, thereby significantly improving the data throughput and spectral efficiency of a single user.

[0005] Existing technologies typically employ a static or semi-static beam management strategy, where the user terminal initially establishes a connection with the satellite using the access beam, and subsequently transmits service data using the data beam. However, this "wide beam access, narrow beam transmission" mode has significant drawbacks in control channel processing: 1. Coverage and Scheduling Dilemma of Uplink Control Channel: Periodic uplink control channel (PUCCH) resources, such as scheduling requests (SR) and channel state information reports (CSI-REPORT). When a UE uses narrow beam coverage, the original semi-static periodic resources may no longer be within the current narrow beam coverage, causing the uplink control channel information transmitted by the UE to be unreceived by the satellite. To alleviate this problem, an alternative solution is to reallocate uplink periodic resources on the data beam after access and listen to these PUCCH periodic resources on the data beam in a time-division manner. However, this is essentially a suboptimal solution that sacrifices time-domain resources for spatial coverage, not only increasing additional scheduling complexity but also significantly reducing the system's time-frequency resource utilization.

[0006] 2. Coverage blind spot in dynamic uplink scheduling: Uplink shared channel (PUSCH) transmission must be dynamically scheduled by the network through uplink grants issued by the downlink control channel (PDCCH). However, PDCCH transmission is strictly limited to the current narrow data beam. Therefore, the network can only grant uplink resources to users (UEs) that are momentarily within the coverage area of ​​this narrow beam. This results in a serious "scheduling blind spot." All users who have successfully accessed (under the access beam) but are not currently under the narrow data beam, even if there are higher priority uplink services, are limited by the physical coverage of the data beam and cannot implement fair or priority scheduling policies. Summary of the Invention

[0007] The present invention aims to provide a satellite antenna control channel coverage enhancement method based on dynamic beamspan, in order to solve the aforementioned significant defects in control channel processing that are usually caused by the static or semi-static beam management strategies used in the prior art.

[0008] The first aspect of this invention provides a method for enhancing the coverage of a satellite antenna control channel based on dynamic beamspan, comprising: The symbol count and symbol position of the uplink and downlink control channels are determined to initialize the satellite antenna control channel; wherein the symbol count and symbol position of the uplink and downlink control channels correspond to the symbol time slots of the initialized satellite antenna control channel; Based on the initialization of the satellite antenna control channel, scheduling events are determined to ascertain the beamwidth mode of the uplink and downlink control channels. If downlink user scheduling exists in the initialization satellite antenna control channel, downlink transmit beamwidth is triggered: The downlink power is assessed based on the downlink power budget to determine whether the downlink power is sufficient: if sufficient, the downlink transmit beamwidth adopts the downlink fixed beamwidth method; otherwise, the downlink transmit beamwidth adopts the dynamic adaptive beamwidth method based on MCS. If uplink user scheduling exists in the initial satellite antenna control channel, uplink receive beamwidth is triggered; the uplink receive beamwidth adopts the uplink fixed beamwidth method. In the symbol time slot of the initial satellite antenna control channel, the downlink control channel is transmitted after beamspanning and / or the uplink control channel is received after beamspanning, so as to complete the coverage enhancement of the satellite antenna control channel.

[0009] In some embodiments, determining the symbol number and symbol position of the uplink and downlink control channels to initialize the satellite antenna control channel includes: The number of symbols and symbol positions of the downlink control channel are determined and saved by reading the control resource set and search space of the downlink control channel PDCCH. The number of symbols and symbol positions of the uplink control channel are determined and saved by reading the resource configuration of the uplink control channel PUCCH. After saving the symbol count and coincidence position of the downlink control channel and the uplink control channel, the initialization of the satellite antenna control channel is completed.

[0010] In some embodiments, the step of assessing whether the downlink power is sufficient based on the downlink power budget includes: The available downlink power margin of the downlink scheduling slot is determined by a preset downlink power management strategy; Determine whether the available downlink power margin is sufficient when evenly distributed to each broadened beam.

[0011] In some embodiments, the downlink transmit beamwidth employs a fixed downlink beamwidth method, including: A beam weight consistent with the coverage range of the target access beam is generated by a preset fixed scheduling strategy, and the beam weight is notified to the satellite antenna to achieve fixed broadening of the downlink transmission beam.

[0012] In some embodiments, the downlink transmission beamwidth employs a dynamic adaptive beamwidth method based on MCS, including: The modulation and coding scheme (MCS) of the current downlink user's service channel is determined by a preset dynamic scheduling strategy. The bandwidth ratio corresponding to the modulation scheme of the current downlink user's service channel is determined based on the modulation and coding strategy. Based on the widening ratio, the widened beamwidth and beam weight are obtained, and the beamwidth and beam weight are notified to the satellite antenna to achieve dynamic adaptive widening of the downlink transmission beam.

[0013] In some embodiments, the uplink receiving beamwidth employs a fixed uplink beamwidth method, including: The number of symbols and symbol positions of the uplink control channel messages are obtained through a preset scheduling strategy. The satellite antenna is then notified through the corresponding symbol time slot to adjust the beamwidth to match the accessed uplink beam, thereby achieving fixed widening of the uplink receiving beam.

[0014] In some embodiments, after transmitting the downlink control channel after beamspanning and / or receiving the uplink control channel after beamspanning in the symbol time slot of the initialized satellite antenna control channel to complete the satellite antenna control channel coverage enhancement, the method further includes: The data beam is adjusted to a narrow beam in the symbol time slot corresponding to the service data in the satellite antenna control channel to meet the high-order transmission requirements of the service data.

[0015] A second aspect of the present invention provides a computer device including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above embodiments.

[0016] A third aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method described in the above embodiments.

[0017] A fourth aspect of the present invention provides a computer program product, including a computer program / instructions, which, when executed by a processor, implements the steps of the method described in the above embodiments.

[0018] This invention provides a method for enhancing satellite antenna control channel coverage based on dynamic beamspan. The method initializes the satellite antenna control channel by determining the number and position of symbols in the uplink and downlink control channels; wherein the number and position of symbols in the uplink and downlink control channels correspond to the symbol time slots of the initialized satellite antenna control channel; scheduling events are judged based on the initialized satellite antenna control channel to determine the beamspanning mode of the uplink and downlink control channels; in the symbol time slots of the initialized satellite antenna control channel, the downlink control channel is beamspanned before transmission and / or the uplink control channel is beamspanned before reception, thereby completing the satellite antenna control channel coverage enhancement. This invention can achieve effective coverage of the access beam area by the uplink and downlink control channels of the data beam, thereby eliminating uplink scheduling and uplink periodic signal blind spots. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the satellite antenna control channel coverage enhancement method based on dynamic beamspan according to an embodiment of the present invention. Figure 2 This is a flowchart illustrating the downlink transmission beamwidth extension method based on MCS in an embodiment of the present invention. Detailed Implementation

[0020] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0021] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0022] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0023] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0024] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0025] The technical problem to be solved by this invention is: how to dynamically expand the coverage of the low-orbit satellite data beam in the transmission control channel without changing the beam shape and high-order modulation method (without affecting its high throughput performance), so that the uplink and downlink control channels of the data beam can effectively cover the access beam area, thereby eliminating uplink scheduling and uplink periodic signal blind spots.

[0026] The core concept of this invention lies in dynamically reusing the same physical beam, allowing it to employ different beamwidths in both service transmission and control channel transmission states. This solves the fundamental problem of small coverage area in narrow data beam control channels without altering high-order modulation service transmission. It mainly includes two aspects: (1) Dynamic transmission scheme for downlink control channel (PDCCH): This scheme adaptively controls the width of the data beam transmission control channel based on the satellite downlink power budget.

[0027] a) In the case of unrestricted power: the data beamwidth of the downlink control channel is consistent with that of the access beam, ensuring that all users within the coverage area of ​​the original access beam can reliably receive downlink control information.

[0028] b) Under power-constrained conditions: A link-adaptive intelligent beamwidth strategy is adopted. The key is to dynamically determine the beamwidth range based on the modulation and coding scheme of the current data beam's traffic channel (PDSCH). If the traffic channel uses high-order modulation, it indicates excellent beam center channel conditions, allowing for a larger beamwidth of the control channel, with the maximum beamwidth being the coverage area of ​​the access beam. If the traffic channel uses low-order modulation (such as QPSK), it indicates limited beamwidth, and the system will strictly control or reduce the beamwidth range, prioritizing the reliability of user control channel reception in the beam center area.

[0029] (2) Reliable reception scheme for the uplink control channel (PUCCH): The uplink control channel's data beamwidth is consistent with the access beamwidth. The widened PUCCH wide receive beamwidth can capture PUCCH signals (such as Scheduling Requests (SRs) and Channel State Information Reports (CSI-REPORTs)) transmitted by all users within the access beamwidth's coverage area, thus fundamentally eliminating information reception omissions caused by the overly strong directivity of the narrow receive beamwidth. Although widening reduces the receive antenna gain, the inherent low-order modulation robustness of the uplink control channel and the high sensitivity of the satellite receiver ensure correct demodulation of information in this mode.

[0030] The system architecture based on the above concept is based on the following assumption: the satellite is equipped with a multi-beam phased array antenna with digital beamforming capabilities and is able to perform dynamic scheduling and beam control. The core control unit is called the "dynamic beam controller", which integrates or connects the scheduler, power management module and beamforming-related computing modules.

[0031] Figure 1 A flowchart illustrating a satellite antenna control channel coverage enhancement method based on dynamic beamspan, as provided in this embodiment of the invention, is shown below. Figure 1 As shown, a method for enhancing the coverage of a satellite antenna control channel based on dynamic beamspan includes the following steps: S101, determine the number of symbols and symbol positions of the uplink and downlink control channels to initialize the satellite antenna control channel; wherein, the number of symbols and symbol positions of the uplink and downlink control channels correspond to the symbol time slots of the initialized satellite antenna control channel; Specifically, step S101 of the specific embodiment of the present invention is: initialization process, determining the number of symbols and symbol positions of the uplink and downlink control channels.

[0032] S102, Based on the initialization of the satellite antenna control channel, a scheduling event is determined to ascertain the beamwidth mode of the uplink and downlink control channels: Specifically, in step S102 of this embodiment of the invention: scheduling event judgment, when there is downlink user scheduling, triggering downlink beam widening process; when there is uplink user scheduling, triggering uplink receiving beam widening.

[0033] S103, if downlink user scheduling exists in the initialization satellite antenna control channel, then downlink transmit beam widening is triggered: The downlink power is assessed based on the downlink power budget to determine whether the downlink power is sufficient: if sufficient, the downlink transmit beamwidth adopts the downlink fixed beamwidth method; otherwise, the downlink transmit beamwidth adopts the dynamic adaptive beamwidth method based on MCS. Specifically, in step S103 of this embodiment of the invention: determining the downlink broadening method involves using the downlink power management module to determine the available downlink power margin in the scheduling time slots and whether it is sufficient to distribute it evenly to each broadened beam. If sufficient, a fixed broadening method is adopted; if limited, only an adaptive fine-tuning broadening strategy can be used.

[0034] S104, if there is uplink user scheduling in the initial satellite antenna control channel, then uplink receive beam widening is triggered; the uplink receive beam widening adopts the uplink fixed widening method; Specifically, in step S104 of this embodiment of the invention: uplink control channel beamwidth expansion. When the scheduler knows which symbols contain uplink control channel messages (including SR, CSI-REPORT, HARQ feedback, etc.), it notifies the antenna beamwidth on these symbols to be adjusted to match the accessed uplink beamwidth.

[0035] S105, in the symbol time slot of the initialization satellite antenna control channel, the downlink control channel is transmitted after beamwidth and / or the uplink control channel is received after beamwidth, so as to complete the coverage enhancement of the satellite antenna control channel.

[0036] Specifically, in step S105 of this embodiment of the invention: the antenna transmits via a widened downlink control channel and receives via a widened uplink control channel on the corresponding time slot symbol.

[0037] Compared with the prior art, the technical solution of the present invention improves the coverage of the uplink and downlink control channels by widening the uplink and downlink control channels of the data beam without changing the efficiency of service data transmission. That is, without changing the low-orbit satellite data beam shape and high-order modulation method (without affecting its high throughput performance), the coverage of the beam in the transmission control channel is dynamically expanded.

[0038] Based on the above embodiments, determining the number of symbols and symbol positions of the uplink and downlink control channels to initialize the satellite antenna control channel includes: The number of symbols and symbol positions of the downlink control channel are determined and saved by reading the control resource set and search space of the downlink control channel PDCCH. The number of symbols and symbol positions of the uplink control channel are determined and saved by reading the resource configuration of the uplink control channel PUCCH. After saving the symbol count and coincidence position of the downlink control channel and the uplink control channel, the initialization of the satellite antenna control channel is completed.

[0039] In other words, the downlink reads the PDCCH control resource set (CORESET) and search space configuration to determine and save the number and position of symbols in the downlink control channel. The uplink reads the uplink control channel PUCCH related configuration to determine and save the number and position of symbols in the uplink control channel.

[0040] Based on the above embodiments, the step of assessing whether the downlink power is sufficient according to the downlink power budget includes: The available downlink power margin of the downlink scheduling slot is determined by a preset downlink power management strategy; Determine whether the available downlink power margin is sufficient when evenly distributed to each broadened beam.

[0041] In other words, the determination of the downlink broadening method in the core step three above is achieved by the downlink power management module, which determines whether the available downlink power margin in the scheduling time slots is sufficient when evenly distributed to each broadened beam. If sufficient, a fixed broadening method is used; if limited, only an adaptive fine-tuning broadening strategy can be employed.

[0042] Based on the above embodiments, the downlink transmission beamwidth adopts a downlink fixed beamwidth method, including: A beam weight consistent with the coverage range of the target access beam is generated by a preset fixed scheduling strategy, and the beam weight is notified to the satellite antenna to achieve fixed broadening of the downlink transmission beam.

[0043] In other words, downlink fixed widening: the scheduler generates beam weights that are completely consistent with the coverage area of ​​the target access beam and notifies the antenna.

[0044] Based on the above embodiments, the downlink transmission beamwidth adopts a dynamic adaptive beamwidth method based on MCS, such as... Figure 2 As shown, it includes: S201, determine the modulation and coding scheme (MCS) of the current downlink user's service channel through a preset dynamic scheduling strategy; S202, Based on the modulation and coding strategy, determine the spread ratio corresponding to the modulation scheme of the current downlink user's service channel; S203, based on the widening ratio, obtain the widened beamwidth and beam weight, and notify the satellite antenna of the beamwidth and beam weight to realize the dynamic adaptive widening of the downlink transmission beam.

[0045] Specifically, downlink adaptive fine-tuning: (1) The scheduler obtains the modulation and coding strategy (MCS) of the current downlink user's traffic channel (PDSCH).

[0046] (2) The scheduler maintains a predefined “MCS-recommended expansion table” (refer to 3GPP protocol 38214 Table 5.1.2.1-2), as shown in Table 1 below.

[0047] (3) Calculate the beamwidth and beam weight after widening according to the beamwidth ratio and notify the antenna.

[0048] Table 1 Based on the above embodiments, the uplink receiving beamwidth adopts an uplink fixed beamwidth method, including: The number of symbols and symbol positions of the uplink control channel messages are obtained through a preset scheduling strategy. The satellite antenna is then notified through the corresponding symbol time slot to adjust the beamwidth to match the accessed uplink beam, thereby achieving fixed widening of the uplink receiving beam.

[0049] In other words, when the scheduler knows which symbols contain uplink control channel messages (including SR, CSI-REPORT, HARQ feedback, etc.), it notifies the antenna beamwidth on these symbols to be adjusted to match the accessed uplink beamwidth.

[0050] Based on the above embodiments, after transmitting the downlink control channel after beamwidth and / or receiving the uplink control channel after beamwidth in the symbol time slot of the initialized satellite antenna control channel to complete the satellite antenna control channel coverage enhancement, the method further includes: The data beam is adjusted to a narrow beam in the symbol time slot corresponding to the service data in the satellite antenna control channel to meet the high-order transmission requirements of the service data.

[0051] Here, the core steps of the specific implementation of the present invention are as follows: after completing the widened beam rate reception and transmission of the uplink and downlink control channels, the data beam on the corresponding service data symbol is adjusted to a narrow beam to meet the high-order transmission requirements of the service data.

[0052] The technical solution of this invention focuses on protecting the following innovative aspects: 1) Without changing the efficiency of business data transmission, the coverage of uplink and downlink control channels can be improved by widening the data beam uplink and downlink control channels.

[0053] 2) Addressing the common scenario of limited satellite downlink power, this paper innovatively proposes using the channel coding and modulation state currently used by the data beam to transmit service data as the core basis for real-time judgment of the downlink control channel widening range, without exceeding the total transmit power budget of the beam. When the service channel uses high-order modulation, significant widening is allowed; when low-order modulation is used, widening is limited, achieving optimal coverage under power constraints.

[0054] 3) An innovative asymmetric beamwidth strategy is proposed to address the bidirectional transmission characteristics of the control channel. For the downlink control channel, the strategy is as described in 2). For the uplink control channel, without incurring transmit power limitations, the receive beam is fixedly broadened to a width matching the access beam, ensuring reliable reception of wide-area uplink control information in the simplest way.

[0055] In summary, the present invention has the following technical advantages compared to the prior art: 1) When downlink power is unrestricted, eliminate the "scheduling blind spot" and achieve continuous coverage. By dynamically widening the downlink control channel beam to the access beam range, ensure that users who have successfully accessed the network can be continuously covered by the downlink control channel, regardless of whether they are under the precise pointing of the current narrow data beam. This fundamentally solves the problems of uplink scheduling authorization not being issued and high-priority users not being scheduled in a timely manner.

[0056] 2) Under the practical constraint of limited satellite downlink power, the coverage of the control channel is dynamically adjusted through a link-adaptive intelligent widening strategy. Its core effect is to extend the control channel coverage beyond the narrow beam as much as possible within a given power budget, thereby minimizing the "scheduling blind spot".

[0057] 3) Ensure reliable delivery of uplink control information. By extending the uplink control channel of the data beam to the access beam range, uplink control information from users within the entire access beam can be reliably received, solving the problem of "reception loss" of key information such as SR and CSI caused by narrow receiving beam.

[0058] 4) Significantly reduces time and frequency resource overhead. "Dynamic switching of beam shape" replaces "time-division hopping scanning of beam pointing" in the existing technology, avoiding the need to reserve a large number of dedicated scanning time slots for serving edge users, and using more valuable time and frequency resources for business data transmission, directly improving the system spectrum efficiency.

[0059] 5) Enhanced fairness and flexibility of scheduling. The scheduling algorithm can make decisions purely based on logical strategies such as service priority and quality of service (QoS) requirements, no longer limited by the rigid constraint of the physical coverage of the beam, thus achieving fairer and more flexible resource allocation.

[0060] Further improvements and modifications to the above technical solutions are also within the scope of protection of this invention, such as, but not limited to: (1) Multiplexing of downlink control information for multiple UEs: In the extended PDCCH beam, multiple users DCI is multiplexed, and multiple users are scheduled at the same time within one opportunity. One extension serves a group of users, reducing the frequent switching between extension and non-extension between downlink control channels and service channels.

[0061] (2) Multiplexing of uplink control information for multiple UEs: The uplink periodic signals of users within the coverage area of ​​the access beam are aggregated into a preset, periodic "expanded time window" for unified processing, reducing the frequent switching of beam shape and reducing system complexity.

[0062] Based on the above embodiments, this embodiment of the invention provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above embodiments.

[0063] In some embodiments of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in the above embodiments.

[0064] In some embodiments of the present invention, a computer program product is provided, including a computer program / instructions, which, when executed by a processor, implements the steps of the method described in the above embodiments.

[0065] The processor may include, but is not limited to, one or more processors or microprocessors. Each processor may be implemented as an Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor, or other electronic component, for executing the methods in the above embodiments.

[0066] Computer-readable storage media can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Computer-readable storage media may include, but are not limited to, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, and computer storage media (e.g., hard disks, floppy disks, solid-state drives, removable disks, CD-ROMs, DVD-ROMs, Blu-ray discs, etc.).

[0067] Computer-readable storage media may also store at least one computer-executable program / instruction, such as computer-readable instructions. Computer-readable storage media include, but are not limited to, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Computer-readable storage media may include, for example, read-only memory (ROM), hard disk, flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device executes the computer-readable instructions stored on the computer-readable storage medium, the various methods described above can be performed.

[0068] In addition, the computer device may include (but is not limited to) a data bus, an input / output (I / O) bus, a display, and input / output devices (e.g., keyboard, mouse, speakers, etc.).

[0069] The processor can communicate with external devices via the I / O bus through wired or wireless networks.

[0070] In one embodiment, the at least one computer-executable instruction may also be compiled into or comprise a software product / computer program product, wherein one or more computer-executable instructions are executed by a processor to perform the steps of the various functions and / or methods in the embodiments described herein.

[0071] Those skilled in the art will understand that all or part of the steps of the methods described above can be implemented by a program instructing related hardware. The program can be stored in a readable storage medium, and when executed, the program includes one or a combination of the steps of the method implementation.

[0072] In the various embodiments of this application, the functional units can be integrated into a single processing module, or each unit can exist physically separately, or two or more units can be integrated into a single module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a readable storage medium. The storage medium can be a read-only memory, a disk, or an optical disk, etc.

[0073] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments / modes or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0074] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A method for enhancing the coverage of a satellite antenna control channel based on dynamic beamspan, characterized in that, include: The symbol count and symbol position of the uplink and downlink control channels are determined to initialize the satellite antenna control channel; wherein the symbol count and symbol position of the uplink and downlink control channels correspond to the symbol time slots of the initialized satellite antenna control channel; Based on the initialization of the satellite antenna control channel, scheduling events are determined to ascertain the beamwidth mode of the uplink and downlink control channels. If downlink user scheduling exists in the initialization satellite antenna control channel, downlink transmit beamwidth is triggered: The downlink power is assessed based on the downlink power budget to determine whether the downlink power is sufficient: if sufficient, the downlink transmit beamwidth adopts the downlink fixed beamwidth method; otherwise, the downlink transmit beamwidth adopts the dynamic adaptive beamwidth method based on MCS. If uplink user scheduling exists in the initial satellite antenna control channel, uplink receive beamwidth is triggered; the uplink receive beamwidth adopts the uplink fixed beamwidth method. In the symbol time slot of the initial satellite antenna control channel, the downlink control channel is transmitted after beamspanning and / or the uplink control channel is received after beamspanning, so as to complete the coverage enhancement of the satellite antenna control channel.

2. The method according to claim 1, characterized in that, The process of determining the symbol number and symbol position of the uplink and downlink control channels to initialize the satellite antenna control channels includes: The number of symbols and symbol positions of the downlink control channel are determined and saved by reading the control resource set and search space of the downlink control channel PDCCH. The number of symbols and symbol positions of the uplink control channel are determined and saved by reading the resource configuration of the uplink control channel PUCCH. After saving the symbol count and coincidence position of the downlink control channel and the uplink control channel, the initialization of the satellite antenna control channel is completed.

3. The method according to claim 1, characterized in that, The assessment of whether downlink power is sufficient based on downlink power budget includes: The available downlink power margin of the downlink scheduling slot is determined by a preset downlink power management strategy; Determine whether the available downlink power margin is sufficient when evenly distributed to each broadened beam.

4. The method according to claim 1, characterized in that, The downlink transmit beamwidth adopts a fixed downlink beamwidth method, including: A beam weight consistent with the coverage range of the target access beam is generated by a preset fixed scheduling strategy, and the beam weight is notified to the satellite antenna to achieve fixed broadening of the downlink transmission beam.

5. The method according to claim 1, characterized in that, The downlink transmission beamwidth employs a dynamic adaptive beamwidth method based on MCS, including: The modulation and coding scheme (MCS) of the current downlink user's service channel is determined by a preset dynamic scheduling strategy. The bandwidth ratio corresponding to the modulation scheme of the current downlink user's service channel is determined based on the modulation and coding strategy. Based on the widening ratio, the widened beamwidth and beam weight are obtained, and the beamwidth and beam weight are notified to the satellite antenna to achieve dynamic adaptive widening of the downlink transmission beam.

6. The method according to claim 1, characterized in that, The uplink receiving beamwidth adopts an uplink fixed beamwidth method, including: The number of symbols and symbol positions of the uplink control channel messages are obtained through a preset scheduling strategy. The satellite antenna is then notified through the corresponding symbol time slot to adjust the beamwidth to match the accessed uplink beam, thereby achieving fixed widening of the uplink receiving beam.

7. The method according to claim 1, characterized in that, After the satellite antenna control channel coverage enhancement is completed by transmitting after beamspanning the downlink control channel and / or receiving after beamspanning the uplink control channel in the symbol time slot of the initialized satellite antenna control channel, the method further includes: The data beam is adjusted to a narrow beam in the symbol time slot corresponding to the service data in the satellite antenna control channel to meet the high-order transmission requirements of the service data.

8. A computer device, characterized in that, The system includes a memory, a processor, and a computer program stored in the memory, characterized in that the processor executes the computer program to implement the steps of the satellite antenna control channel coverage enhancement method based on dynamic beamwidth as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the satellite antenna control channel coverage enhancement method based on dynamic beamwidth as described in any one of claims 1 to 7.

10. A computer program product, comprising a computer program / instructions, characterized in that, When executed by a processor, the computer program implements the steps of the satellite antenna control channel coverage enhancement method based on dynamic beamwidth as described in any one of claims 1 to 7.

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