69 results about "Satellite mobile communication" patented technology

The invention provides a low earth orbit satellite mobile communication ground experiment method and system. According to the influence of different orbit heights and solar activity periods, a diversified orbit parameter set is planned, and a virtual satellite network model is generated; based on the virtual satellite network model, calculating an optimal transmission path by using a path prediction algorithm, adjusting the characteristics of a transmitted signal through a real-time channel simulation technology, and generating a low-orbit satellite communication environment test scene; based on the low-orbit satellite communication environment test scene, evaluating communication performance data by using an adaptive performance evaluation algorithm, determining a power consumption mode by combining an energy efficiency optimization method, analyzing a relationship between battery consumption and communication quality, and generating a performance evaluation report; and integrating the power consumption data and the communication quality data, converting the integrated data into a practical solution, and generating a low-orbit satellite mobile communication ground experiment result. According to the technical scheme provided by the invention, the comprehensiveness and practicability of the low-orbit satellite mobile communication ground experiment method are improved.

The invention discloses an Internet of Things service transmission method for a low-orbit satellite mobile communication system, which relates to the technical field of Internet of Things and comprises the following steps: starting a satellite base station, dividing resources, carrying out initial resource configuration and broadcasting a message by a terminal; the Internet of Things terminal receives the broadcast message, carries out primary connection with the satellite base station, and sends a handshake packet to the satellite base station to carry out intention identification and service parameter configuration; dynamically adjusting a spectrum allocation strategy according to a prediction result, and generating an optimized spectrum allocation scheme and a resource scheduling instruction; performing related state information switching based on the optimized spectrum allocation scheme and the resource scheduling instruction; after receiving the service data uploaded by the terminal, the data center judges whether a confirmation signal needs to be sent to the Internet of Things terminal in combination with the switched state information; according to the invention, the direct communication link is established through the inter-satellite link, so that the data continuity and the low-delay characteristic in the switching process are ensured.

The invention provides a downlink resource scheduling method and device and a storage medium. The downlink resource scheduling method is applied to network equipment, and comprises the following steps: determining power adjustment parameters of a plurality of terminals in a satellite mobile communication system; the power adjustment parameter is used for calculating a power adjustment value of the terminal in the current time slot; and allocating downlink resources to each business service level of the terminals with different terminal service levels based on the power adjustment parameters. According to the downlink resource scheduling method and device and the storage medium provided by the invention, the user-level power control is carried out by utilizing the characteristics of the satellite mobile communication system, and the user-level downlink resource allocation is carried out according to the user-level power control, so that the capacity of the satellite communication system is improved, and the user experience is improved.

The invention discloses a low-orbit satellite communication terminal power consumption optimization method, and relates to the technical field of satellite mobile communication and wireless communication terminal power consumption management. A candidate set is generated based on satellite ephemeris and shielding information, so that a terminal only scans a limited frequency band, and energy waste caused by full-frequency-band blind scanning is fundamentally avoided; in a dense urban scene, signal interruption is caused by high-rise buildings, and a traditional terminal needs to repeatedly scan to maintain connection, however, a predictive scanning mechanism of the method can activate scanning in advance before signal attenuation and reduce response delay, so that a power consumption curve is smoothed, and a power consumption peak value caused by sudden switching is avoided; secondly, the energy consumption perceptual sorting mechanism dynamically evaluates the power consumption performance of the candidate satellites through historical data and context features, and preferentially selects low-energy-consumption options, so that the scanning process is more targeted.

The invention belongs to the technical field of satellite communication, and particularly relates to a terminal inter-satellite link switching method based on satellite-ground heterogeneous data. The method comprises the following steps: constructing an LEO satellite mobile communication network and a graph structure thereof according to an LEO satellite, a user terminal, a ground gateway station and a communication link thereof; and acquiring satellite orbit and link state data, ground gateway station data, meteorological data and user behavior data in real time, and inputting the data into the trained inter-satellite link switching prediction model of the terminal after data preprocessing and feature coding to obtain an optimal inter-satellite link switching strategy of the terminal. The prediction model is based on a multi-layer GNN model and introduces a weight matrix, a time sequence enhancement and time sequence attention mechanism and a dynamic adjustment mechanism, so that comprehensive evaluation and subsequent decision-making of various data of switching candidate satellites can be realized, and an optimal terminal inter-satellite link switching strategy is obtained. According to the invention, the success rate and efficiency of inter-satellite link switching are effectively improved, the risks of switching delay and communication interruption are reduced, and the communication quality is improved.

The invention belongs to the field of satellite mobile communication, and particularly provides a three-frequency-band circularly polarized flexible microstrip antenna and wearable equipment, used radiation patches are superconducting fabrics, a dielectric substrate is made of flexible felt materials and has the overall flexibility characteristic, so that the wearing comfort is ensured, the mode that two layers of radiation patches are stacked is adopted, and the antenna is more flexible. The upper-layer patch is subjected to special treatment such as branch knot loading and slotting to obtain a dual-band right-handed circularly polarized radiation characteristic, the parasitic patch is introduced to the upper surface of the upper-layer dielectric substrate to enhance the axial ratio bandwidth of the upper-layer patch, and the lower-layer patch is subjected to corner cutting treatment to obtain a left-handed circularly polarized radiation characteristic. And the isolation degree between the two ports is enhanced by introducing the metal short-circuit through hole. And the upper-layer patch and the lower-layer patch are fed by using a coaxial cable. Finally, the section of the antenna is only 0.05 lambda0, and the antenna is simple in structure, convenient to manufacture, good in performance and more convenient to wear on a human body, and meets the performance requirements of a Beidou navigation system.

The invention discloses a downlink precoding method and device, electronic equipment, a storage medium and a program, and is applied to a sending end, the method comprises the following steps: obtaining communication configuration information, and determining an average interference power leakage coefficient of different users on scheduled subcarriers according to the communication configuration information; determining an average channel power and an array response vector of each user based on the communication configuration information; according to the average interference power leakage coefficient, the average channel power and the array response vector, determining a downlink precoding vector of each user according to an average signal leakage noise ratio maximization criterion; and obtaining a downlink transmission signal of each user, and performing weighting processing on the transmission signal of each downlink user according to the downlink precoding vector of each user, thereby obtaining a downlink transmission signal corresponding to each downlink transmission beam. According to the embodiment of the invention, the problem of asynchronous interference among different users in the mobile phone direct connection satellite communication system can be solved, and the downlink transmission performance of the multi-beam satellite mobile communication system can be improved.

The embodiment of the invention discloses a signaling transmission method, ground core network equipment, a ground terminal and a storage medium, and relates to the technical field of satellite mobile communication, and the method comprises the steps: obtaining satellite ephemeris information and communication request information of the ground terminal; and according to the satellite ephemeris information and the position information of the ground terminal, determining a target service satellite, and sending a target core network service associated with the service request type to the target service satellite, so that the target service satellite creates a core network service with the ground terminal based on the target core network service. And under the condition that the core network service is started, a communication link is formed between the ground terminal and the target service satellite to realize signaling transmission. According to the application, the target core network service associated with the service request type is deployed from the ground core network device to the target service satellite, so that the round-trip times between the ground terminal and the target service satellite in the signaling transmission process can be reduced, the signaling transmission delay is further reduced, and the signaling transmission efficiency is improved.

The invention relates to a satellite mobile communication antenna adaptive beam prediction and control method, which comprises the following steps: acquiring motion data of a user terminal, signal state data of a satellite antenna receiving end, satellite-ground attitude data of a satellite and environment interference data of the ground, and processing to obtain a multi-source data set; the method comprises the following steps: constructing a geometric correlation feature, a gain correlation feature, a sidelobe correlation feature and an array element phase correlation feature of a multi-source data set and beam parameters, constructing a correlation matrix, and splicing the correlation matrix with the multi-source data set to obtain a complete input feature set; a beam prediction model is constructed, and training and verification are carried out; and converting the output of the beam prediction model into a control signal to drive an antenna array element to adjust, correcting model parameters based on the link signal-to-noise ratio, the bit error rate and the throughput collected by the user terminal, and splitting / combining the beam. According to the method, the beam parameter prediction precision and environment adaptability can be improved, interference is suppressed, resource allocation is optimized, and stability and high efficiency of satellite communication in a high-dynamic complex environment are guaranteed.

The utility model discloses a 5G satellite mobile communication signal transponder in the technical field of mobile communication, which comprises a signal transponder body, the top of the body is provided with a shell, two sides of the shell are respectively provided with a plurality of air inlet holes which are uniformly arranged, two sides of the interior of the shell are respectively provided with a dustproof piece, and the dustproof pieces are arranged in the shell. Two lock catch assemblies are installed between the body and the shell so that air can drive heat in the body to flow, dustproof pieces on the two sides in the shell can filter dust entering the body, it is avoided that the dust is driven to enter the body while the air flows, and the problems that the dust prevention effect of equipment is poor, dust accumulation in the equipment is caused, and the service life of the equipment is prolonged are solved. The problems that in the prior art, the ventilation and heat dissipation effects of equipment are reduced, the temperature in the equipment is likely to rise, the equipment is damaged, and existing equipment is tedious to disassemble and assemble and inconvenient to overhaul are solved.

The application discloses a satellite switching coordination prediction method for interference avoidance, and relates to the technical field of satellite mobile communication.The application comprises the following steps: after receiving the interference avoidance instruction of a ground network control center, a service satellite precalculates a differentiated switching advance for a terminal according to the antenna type and service quality level of the terminal; then, the inter-satellite link is used to acquire the predicted coverage time window and load state of a neighboring satellite for the area where the satellite terminal is located, and a comprehensive score is obtained; and finally, at the switching trigger moment, the satellite terminal is switched to the neighboring satellite with the highest comprehensive score, so that the target satellite can provide continuous and stable service in the subsequent period of time, and the risk of'secondary switching' caused by the subsequent interference avoidance of the target satellite is effectively avoided.The application significantly improves the continuity of high-priority services and the overall resource utilization efficiency of the system by deeply coordinating the management of the interference avoidance plan and the switching mechanism.

The invention provides a data transmission method, terminal equipment, network equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: determining indication information; performing data transmission in the first time unit according to the indication information; wherein the indication information is used for indicating pattern information adopted by the terminal equipment, the first time unit is located in a second time unit, and the second time unit is a time unit in a satellite mobile communication system. And the condition of communication interference caused by simultaneous uplink transmission and downlink transmission is avoided. And the communication effect is improved.

The present disclosure provides a multi-mode satellite mobile communication uplink signal real-time detection and identification method and system. Applied to the field of satellite mobile communication technology, the method comprises: performing wideband sampling on the obtained received signal to obtain sampling data, performing signal carrier detection on the sampling data, judging whether the sampling data contains a target signal, and if so, proceeding to the next step; performing channelization processing on the sampling data to obtain narrowband signals in different satellite system corresponding narrowband channels; performing TDMA signal detection on the narrowband signals to obtain signal specifications, wherein the TDMA signal detection comprises energy detection, correlation detection, and signal identification. The present disclosure has the advantages of: significantly improving the accurate identification capability of various satellite mobile communication terminal uplink signals, with a detection and identification accuracy of 99%; and the hardware cost of the present disclosure increases little, and has a low-cost application prospect.

The application belongs to the field of satellite mobile communication, and specifically provides a wide-beam metal-resistant antenna for satellite communication to overcome the problem that communication is interrupted under the interference of a metal environment for the existing satellite communication antenna. The application adopts a design of laminated slot coupling feed, improves the back and forward radiation of the antenna through a metal reflector plate and a forward radiation plate to improve the gain, generates 90 degrees of self-phase shift through a Wilkinson power divider, feeds a rotationally symmetrical "H" type slot at the same time, introduces a metal aluminum ring to pre-compensate the metal environment, reduces the influence of the surrounding metal floor on the antenna, and the metal reflector plate and the conductive metal aluminum ring together form a magnetic dipole, which is complementary to the directional diagram of the feed plate as an electrode to widen the lobe and improve the gain at a low elevation angle. Furthermore, the application has the advantages of wide beam, good low-elevation circular polarization performance and metal resistance, and is more suitable for satellite communication in actual scenarios.

The utility model relates to the technical field of heat dissipation structures, in particular to a satellite mobile communication terminal heat dissipation structure which comprises a heat dissipation shell, a clamping piece used for clamping a terminal body is arranged at the upper end in the heat dissipation shell, and a fan piece is installed at the position, under the clamping piece, of the center in the heat dissipation shell. And a cooling accessory is arranged between the clamping piece and the fan piece in the heat dissipation shell. According to the heat dissipation structure of the satellite mobile communication terminal, the terminal main body can be clamped through the right-angle plate and the spring arranged in the clamping piece, so that the terminal main body is prevented from shaking; and meanwhile, the funnel-shaped air duct arranged in the cooling accessory can cool the air blown out by the fan, so that the heat dissipation effect of the terminal main body is improved.

The application is a satellite 5G large dynamic high-speed transmission real-time receiving and time synchronization method and system based on FPGA, and belongs to the technical field of wireless communication.The system is provided with a real-time receiving module, a time synchronization module and the like at the receiving end of a satellite-ground transmission link.The method comprises the following steps: the receiving end stores data into a DDR3 in real time by using an asynchronous FIFO, and performs time synchronization once every transmission half-frame signal;the starting point of a symbol is calculated in a multi-symbol combination mode, the content of each symbol is obtained according to the starting point of the symbol, a correlation value is calculated according to a known PSS sequence, the starting point of the half-frame signal is obtained, and subsequent CP removal and demodulation operations are continuously performed;the application solves the problem of timing synchronization difficulty caused by large time delay and large frequency offset, realizes low complexity and timing synchronization error not affected by carrier frequency offset under the premise of ensuring accuracy, and can be used for the time synchronization process of a satellite mobile communication system with large dynamic frequency offset.

The invention discloses a PUSCH (Physical Uplink Shared Channel) transmission control method and device in a high-orbit satellite communication system, and belongs to the field of satellite mobile communication. The PDCCH parameter configuration module calculates and configures PDCCH parameters; the PDCCH demodulation and decoding module is used for completing a demodulation and decoding process of a PDCCH signal; the DCI analysis module is used for completing analysis and storage of a DCI format; the PUSCH data request module is used for calculating PUSCH channel sending start time and requesting PUSCH uplink data; the high-level protocol stack unit generates uplink data corresponding to a PUSCH channel and stores the uplink data in a specified cyclic BUFFER unit; the PUSCH parameter configuration module is used for calculating and configuring PUSCH parameters; and the PUSCH coding and modulation module completes the processes of coding and the like of a PUSCH channel and transmits a signal. The hierarchical design method is high in operation efficiency and easy and reliable to implement.

The invention discloses a beam resource dynamic allocation method of a satellite communication system, and belongs to a satellite mobile communication method. The method comprises the following steps: scheduling a service beam to carry out resource allocation by taking a beam position as a unit based on the current beam resource of a satellite, the state and priority of an access terminal and the like. A connected terminal, a new access terminal and a resource transformation terminal can be called non-reserved resource terminals, and only non-reserved wave positions can be allocated. And the reserved resource terminal can only allocate reserved wave positions. The beam management module analyzes and processes the beam resource state when receiving the service request, and releases and adjusts the terminal under the beam; and then, according to a beam allocation strategy of staring first and then dynamic, allocation processing of reserved resource terminals is carried out first, and then allocation processing of non-reserved resource terminals is carried out. According to the invention, factors such as different wave beam states, different terminal states, priority and continuity of terminal allocation and the like under the same satellite can be fully considered, the utilization efficiency of wave beam resources is improved, and the system performance is improved.

The invention provides a multi-standard satellite mobile communication uplink signal real-time detection and identification method and system. The method is applied to the technical field of satellite mobile communication, and comprises the following steps: carrying out broadband sampling on an obtained receiving signal to obtain sampling data, carrying out signal carrier detection on the sampling data, judging whether the sampling data contains a target signal or not, and if so, entering the next step; carrying out channelization processing on the sampling data to obtain narrowband signals in narrowband channels corresponding to different satellite systems; and performing TDMA signal detection on the narrowband signal to obtain a signal specification, wherein the TDMA signal detection comprises energy detection, correlation detection and signal identification. The method has the advantages that the capability of accurately recognizing uplink signals of various satellite mobile communication terminals is remarkably improved, and the detection and recognition accuracy reaches 99%; the hardware cost is not increased much, and the method has a low-cost application prospect.

The application provides a multi-user cooperative communication system and method based on satellite mobile communication. The system comprises: a gateway station receiving various types of information sent by corresponding user terminals through satellite mobile communication connection and sending the information to an information transmission service module; the information transmission service module sending the information to a multi-user cooperative communication service module; sending a service request to the multi-user cooperative communication service module; the multi-user cooperative communication service module receiving the information; sending corresponding information to corresponding user terminals according to the service request; the user terminals sending various types of information and service requests to the gateway station, receiving service information fed back by the multi-user cooperative communication service module through the gateway station and forwarding the service information to other user terminals in corresponding groups; and a data monitoring center monitoring and obtaining the information received by the multi-user cooperative communication service module and the service information fed back. The system can adapt to various scenes and meet efficient communication among user groups in a small range.

The invention provides a satellite mobile communication test system, method, device, equipment, medium and program. The system comprises measurement and control station equipment, a satellite base station, terminal equipment and core network equipment, the measurement and control station equipment, the satellite base station and the core network equipment are all deployed on the ground, and the terminal equipment is deployed on a satellite orbit; the measurement and control station equipment is used for sending a test instruction to the terminal equipment, receiving performance observation data which is returned by the terminal equipment after executing the test instruction and aims at the wireless communication link between the terminal equipment and the satellite base station, and determining the performance of the wireless communication link according to the performance observation data; the terminal equipment is used for executing the test instruction and performing communication test on the satellite base station to obtain performance observation data of the wireless communication link; the satellite base station is used for cooperating with the terminal equipment to execute the test instruction; and the core network equipment is used for providing communication service required by the satellite base station. The communication test scheme implemented based on the satellite mobile communication test system has the effects of high channel fidelity, low deployment cost and short test period.

Disclosed are an uplink multi-beam joint receiving method, apparatus, electronic device, medium and program, applied to a receiving end, the method comprising: acquiring communication configuration information, and determining an average interference power leakage coefficient of different users on scheduled subcarriers according to the communication configuration information; determining an average channel power and an array response vector of each user based on the communication configuration information; according to the average interference power leakage coefficient, the average channel power and the array response vector, determining an uplink linear receiving vector of each user according to an average signal to interference plus noise ratio maximization criterion; and obtaining an uplink receiving signal of each uplink wave beam, and performing weighting processing on the uplink receiving signal according to the uplink linear receiving vector of each user so as to obtain an uplink receiving signal corresponding to each user. According to the embodiment of the invention, the problem of asynchronous interference among different users in a mobile phone direct connection satellite communication system can be solved, accurate receiving of uplink signals can be realized, and the uplink transmission performance of the satellite mobile communication system is improved.

The application discloses a kind of satellite mobile communication system adaptive power control methods, this method is: first, the current service channel signal and noise ratio is measured to the service channel burst of local end and predicts the channel quality after long delay;Then local end enters closed loop power control procedure, judge whether to the receiving opportunity of power control channel along with road, if to the power control channel along with road opportunity, then calculate the attenuation value of transmitting power of opposite end, the attenuation value of transmitting power of local end is calculated using closed loop power control;Then using open loop power control correction local end this time transmitting power;Finally, according to the lower limit of system set transmitting power value and the upper limit of transmitting power value, the amplitude limiting and quantization of local end this time transmitting power are carried out, and the transmitting power level is set according to the power of quantization.The application improves the performance of satellite mobile communication system power control, improves system communication capacity and communication quality.

The present invention discloses a method and system for uplink transmission of massive MIMO multi-satellite mobile communications. When satellites employ a serial interference cancellation reception scheme, each satellite or gateway uses statistical channel information to calculate the precoding vector for each user terminal corresponding to each satellite, based on the traversal and rate maximization criteria, and feeds this back to each user terminal. When satellites employ a linear reception scheme, each satellite or gateway uses statistical channel information to jointly calculate the precoding vector for each user terminal corresponding to each satellite and the reception processing vector for each satellite corresponding to each user terminal, based on the traversal and rate maximization criteria, dynamically implementing multi-satellite massive MIMO uplink transmission. User terminals utilize the Doppler shift and minimum propagation delay caused by the movement of each satellite to perform frequency and time compensation on each data stream sent to different satellites, followed by linear precoding processing. The present invention can improve the uplink reachability and rate performance of a multi-satellite mobile communication system while having low computational complexity.

The invention discloses a low-orbit phased array terminal satellite capture and inertial navigation real-time calibration method, device and system and a medium, and belongs to the field of satellite mobile communication, and the method comprises the following steps: after a satellite is successfully captured and stabilized, an antenna enters a satellite tracking state, and inertial navigation data is continuously calibrated in the tracking state; wherein the phased-array antenna is divided into four array planes, namely an A array plane, a B array plane, a C array plane and a D array plane, and the receiving powers of the four array planes respectively correspond to the power PA, the power PB, the power PC and the power PD; the antenna is provided with four power detection circuits which are used for detecting the combined receiving power of the four array plane combinations, the combined receiving power corresponds to PA and PB, PC and PD, PA and PC, PB and PD, and the antenna beam pointing error is calculated and corrected. According to the invention, the attitude data can be calibrated in real time by receiving the signal, so that the cost and the design complexity of the phased-array antenna are reduced.

The embodiment of the invention provides a satellite mobile communication simulation method and device, equipment, a medium and a program product. The method comprises the following steps: acquiring population information and geographic information of a target area; obtaining the total number of simulation terminals deployed in the target area; determining at least one simulation terminal deployment scheme according to the population information, the geographic information and the total number of simulation terminals; the simulation terminal deployment scheme comprises geographical coordinate information corresponding to each simulation terminal; and performing a simulation test on the to-be-tested satellite mobile communication system based on the at least one simulation terminal deployment scheme to obtain a simulation test result. According to the method, by combining the demographic distribution proportion with the geographic information, a simulation terminal deployment scheme which better conforms to the user distribution characteristics is constructed, and the credibility and the accuracy of an interference simulation result are remarkably improved.

The application relates to a satellite mobile communication antenna adaptive beam prediction and control method, which comprises the following steps: collecting motion data of a user terminal, signal state data of a satellite antenna receiving end, satellite star-ground attitude data and ground environmental interference data, and processing to obtain a multi-source data set; based on the geometric correlation characteristics, gain correlation characteristics, sidelobe correlation characteristics and array element phase correlation characteristics of the multi-source data set and beam parameters, an associated matrix is constructed, the associated matrix is spliced with the multi-source data set, and a complete input feature set is obtained; a beam prediction model is constructed, and training and verification are performed; the beam prediction model output is converted into a control signal to drive the antenna array element adjustment, and based on the link signal-to-noise ratio, the bit error rate and the throughput collected by the user terminal, the model parameters are corrected, and the beam is split / combined. The application can improve the beam parameter prediction accuracy and environmental adaptability, suppress interference, optimize resource allocation, and guarantee stable and efficient satellite communication in a high dynamic complex environment.

The application provides a low-orbit satellite mobile communication ground experiment method and system. According to the influence of different orbit heights and solar activity periods, a diversified orbit parameter set is planned to generate a virtual satellite network model; based on the virtual satellite network model, an optimal transmission path is calculated by using a path prediction algorithm, the characteristics of the transmitted signal are adjusted through real-time channel simulation technology, and a low-orbit satellite communication environment test scene is generated; based on the low-orbit satellite communication environment test scene, a self-adaptive performance evaluation algorithm is used to evaluate communication performance data, an energy efficiency optimization method is used to determine a power consumption mode, the relationship between battery consumption and communication quality is analyzed, and a performance evaluation report is generated; the power consumption data and the communication quality data are integrated, and after integration, the integrated data are converted into a practical solution, and a low-orbit satellite mobile communication ground experiment result is generated. The technical scheme provided by the application improves the comprehensiveness and practicality of the low-orbit satellite mobile communication ground experiment method.

The invention belongs to the technical field of communication, and particularly relates to a method comprising the following steps: S1, signal acquisition: on a satellite load side, acquiring a real-time position coordinate, a running speed vector and a carrier frequency of a satellite through a satellite-borne sensor and a communication link of the satellite; and S2, beam angle acquisition: according to the geographic position information of the ground-based beam center point, calculating to obtain an azimuth angle and a pitch angle of a satellite beam pointing to the center point by means of a space geometrical relationship between the satellite and the ground-based beam center point. According to the invention, the design of obtaining geographic position information by depending on a terminal GNSS module in the prior art is abandoned, and the time-frequency deviation is calculated by using the relative position relationship between the satellite and the ground-based beam center point, so that the influence of signal shielding, interference or fault of the GNSS system on the satellite communication system is avoided fundamentally; the continuity and the stability of the time-frequency compensation function of the satellite-ground transmission link are ensured, and the anti-interference capability and the operation reliability of a satellite mobile communication system are greatly improved.

The present application relates to a kind of low-orbit satellite switching methods based on double activation protocol stack, belong to satellite mobile communication technical field.The method includes: in low-orbit satellite network environment, design with the average rate of user equipment maximization and the switching interruption delay minimization as optimization target's switching architecture based on double activation protocol stack, and establish original optimization problem;Establish low-orbit satellite network multi-stage switching mechanism;Based on the multi-stage switching mechanism established, original optimization problem is decomposed into bandwidth allocation sub-problem and switching strategy sub-problem;Bandwidth allocation sub-problem is solved using alternate direction multiplier method;Switching strategy sub-problem is solved using simulated annealing algorithm;The final optimal solution is obtained by combining the solving results of bandwidth allocation sub-problem and switching strategy sub-problem.The present application can effectively deal with the challenge of frequent satellite switching and limited satellite resources in satellite network, while realizing high-speed, seamless connection, and improving user experience.