Carrier adjustment method, device, terminal, network equipment and storage medium

Abstract

The present application proposes a carrier adjustment method, apparatus, terminal, network equipment and storage medium, wherein the carrier adjustment method includes: determining the target service carrier of the terminal according to the real-time signal-to-noise ratio of the terminal, wherein the target service carrier is the carrier that the terminal expects to use; determining the attribute category of the terminal according to the target service carrier and the actual service carrier of the terminal, wherein the actual service carrier is the carrier actually used by the terminal; adjusting the bandwidth of the actual service carrier according to the attribute category of the terminal. This enables full use of the system's carrier resources and improves spectrum utilization in satellite communications. Moreover, while maintaining a high spectrum utilization rate, it can improve the anti-interference capability of the satellite communication system, reduce the cost of the power amplifier components of the connected terminal, enable support for devices with different antenna apertures, and reduce the impact of differences in different signal coverage areas.

Description

Technical Field

[0001] The present application relates to the field of satellite communication technology, and in particular to a carrier adjustment method, apparatus, terminal, network equipment and storage medium. Background Art

[0002] In the DVB-RCS2 standard protocol of the satellite communication system, among which, Digital Video Broadcasting (DVB) and the Second Generation DVB Interactive Satellite System (DVB-RCS2) adopt Time Division Multiplexing (TDM) for forward transmission and Multi Frequency-Time Division Multiple Access (MF-TDMA) for reverse transmission, and support adaptive modulation and coding for reverse transmission. When the bandwidth of the reverse carrier is fixed, the accessed terminal allocates the RF transmission power with the fixed carrier bandwidth. When the power amplifier is saturated, the accessed terminal can reach the maximum spectrum power; when the interference factor is eliminated, the signal-to-noise ratio is also the largest at this time. Therefore, the output power of the power amplifier device directly affects the signal-to-noise ratio of the accessed terminal under the fixed bandwidth, and the signal-to-noise ratio directly affects the selection of the modulation and coding mode by the access device in the satellite communication system. Different modulation and coding modes correspond to different spectrum efficiencies, which may be very different. For example, the spectrum efficiency obtained by using the 5 / 6 rate coding method in the Quadrature Phase Shift Keying (QPSK) modulation method is more than three times the spectrum efficiency obtained by using the 1 / 3 coding method in the QPSK modulation method.

[0003] From the above information, we can see that when the power is constant, the wider the bandwidth, the lower the power spectrum density, that is, the lower the signal-to-noise ratio; if the power spectrum density remains unchanged, but the bandwidth increases, the power will inevitably increase, that is, a larger power amplifier is required. Therefore, power amplifier, bandwidth and signal-to-noise ratio are three key factors that affect the system spectrum utilization. Since satellite communication systems have fewer spectrum resources, the utilization of spectrum resources (i.e., spectrum utilization) is an important indicator for evaluating the service quality of satellite communication systems.

[0004] At present, the satellite communication system has the following main problems: 1) The cost of the power amplifier device of the access terminal is too high. The price of the power amplifier device is proportional to its power. The power of the power amplifier device indirectly affects the satellite bandwidth spectrum utilization rate, and the size of the antenna aperture also directly affects the signal gain (for example, a 90cm aperture antenna has nearly 3dB more gain than a 60cm aperture antenna). The larger the antenna aperture, the higher the equipment cost. 2) Poor anti-interference ability. The high frequency band of the satellite is greatly affected by the weather. When it rains, the high frequency band signal of the satellite is attenuated, which will affect its signal-to-noise ratio, resulting in low satellite spectrum utilization. 3) There are regional differences in satellite signal coverage. The equivalent isotropic radiated power (EIRP) in different regions is different. When other conditions of the terminal remain unchanged, the signal-to-noise ratio of the satellite signal in different regions is different, and the application spectrum efficiency in areas with poor satellite signals is low. Summary of the invention

[0005] The present application provides a carrier adjustment method, apparatus, terminal, network device and storage medium, which are used to solve the problem of low spectrum utilization in satellite communication due to the high cost of power amplifier components in satellite communication systems in the prior art, poor anti-interference ability, and regional differences in satellite signal coverage.

[0006] An embodiment of the present application provides a carrier adjustment method, comprising: determining a target service carrier of a terminal according to a real-time signal-to-noise ratio of the terminal, wherein the target service carrier is a carrier that the terminal expects to use; determining an attribute category of the terminal according to the target service carrier and an actual service carrier of the terminal, wherein the actual service carrier is a carrier actually used by the terminal; and adjusting the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0007] The target service carrier of the terminal is determined by the real-time signal-to-noise ratio of the accessed terminal, and the attribute category of the terminal is determined based on the target service carrier and the actual service carrier of the terminal, and then the bandwidth of each carrier is adjusted according to the attribute category of the terminal to meet the real-time needs of the terminal. This makes it possible to fully utilize the carrier resources of the system and improve the spectrum utilization rate in satellite communications. In addition, while maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, support devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0008] An embodiment of the present application provides another carrier adjustment method, the method comprising: selecting a target access carrier according to a theoretical signal-to-noise ratio, wherein the theoretical signal-to-noise ratio is a theoretical value of a signal-to-noise ratio when a signal sent by a terminal reaches an access network device; sending an access request to the access network device through the target access carrier, so that the access network device determines an attribute category of the terminal according to the target service carrier of the terminal and an actual service carrier of the terminal, and adjusts the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0009] By selecting the target access carrier according to the theoretical signal-to-noise ratio, the access request can be sent to the access network device through the target access carrier. After receiving the access request, the access network device can determine the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and adjust the bandwidth of the actual service carrier according to the attribute category of the terminal. It is ensured that the idle carrier resources can be fully utilized, thereby improving the spectrum utilization rate in the satellite communication system.

[0010] An embodiment of the present application provides a carrier adjustment device, including: a target service carrier determination module, used to determine the target service carrier of a terminal according to a real-time signal-to-noise ratio of the terminal, wherein the target service carrier is a carrier that the terminal expects to use; a classification module, used to determine the attribute category of the terminal according to the target service carrier and the actual service carrier of the terminal, wherein the actual service carrier is a carrier actually used by the terminal; and an adjustment module, used to adjust the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0011] The target service carrier determination module determines the target service carrier of the terminal according to the real-time signal-to-noise ratio of the accessed terminal, and uses the classification module to determine the attribute category of the terminal according to the target service carrier and the actual service carrier of the terminal, and then uses the adjustment module to adjust the bandwidth of each carrier according to the attribute category of the terminal to meet the real-time needs of the terminal. This makes it possible to make full use of the system's carrier resources and improve the spectrum utilization rate in satellite communications. In addition, while maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, enable support for devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0012] An embodiment of the present application provides a terminal, which includes: a selection module, which is used to select a target access carrier according to a theoretical signal-to-noise ratio, wherein the theoretical signal-to-noise ratio is a theoretical value of a signal-to-noise ratio when a signal sent by the terminal reaches an access network device; and a sending module, which is used to send an access request to the access network device through the target access carrier, so that the access network device determines an attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and adjusts the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0013] By using the selection module to select the target access carrier according to the theoretical signal-to-noise ratio, the target access carrier can be used, and the sending module can be used to send the access request to the access network device, so that the access network device can determine the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and adjust the bandwidth of the actual service carrier according to the attribute category of the terminal. It is ensured that the idle carrier resources can be fully utilized, thereby improving the spectrum utilization rate in the satellite communication system.

[0014] An embodiment of the present application provides a network device, including: one or more processors; a memory, on which one or more programs are stored. When the one or more programs are executed by one or more processors, the one or more processors implement any one of the carrier adjustment methods in the embodiments of the present application.

[0015] An embodiment of the present application provides a storage medium, which stores a computer program. When the computer program is executed by a processor, any carrier adjustment method in the embodiment of the present application is implemented.

[0016] With regard to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A flow chart of a carrier adjustment method provided in an embodiment of the present application is shown.

[0018] Figure 2 A flow chart of a carrier adjustment method provided in yet another embodiment of the present application is shown.

[0019] Figure 3 A flowchart of a carrier adjustment method provided in yet another embodiment of the present application is shown.

[0020] Figure 4 A schematic structural diagram of a carrier adjustment device provided according to an embodiment of the present application is shown.

[0021] Figure 5 A block diagram showing the composition of a terminal provided according to an embodiment of the present application is shown.

[0022] Figure 6 A structural diagram showing an exemplary hardware architecture of a computing device capable of implementing the carrier adjustment method and apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present application, a carrier adjustment method, apparatus, terminal, network device and storage medium provided by the present application are described in detail below in conjunction with the accompanying drawings.

[0024] Example embodiments will be described more fully below with reference to the accompanying drawings, but the example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, the purpose of providing these embodiments is to make this application thorough and complete and to enable those skilled in the art to fully understand the scope of this application.

[0025] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this application, and will not be interpreted as having an idealized or overly formal meaning unless explicitly defined herein.

[0026] The satellite communication system has the following problems: 1) The cost of the power amplifier components of the access terminal equipment is too high. For example, in the use scenario 1, that is, under the coverage of the Asia-Pacific 7 synchronous satellite based on the KU frequency band (downlink from 10.7GHz to 12.75GHz, uplink from 12.75GHz to 18.1GHz), the access terminal uses a 60cm diameter antenna, a 6W power amplifier, and works under a 2MHz transmission bandwidth. The maximum signal-to-noise ratio of the reverse signal of the access terminal reaching the access network equipment through the Asia-Pacific 7 synchronous satellite can reach about 10dB. When the access terminal uses the 5 / 6 rate coding method in the Quadrature Phase Shift Keying (QPSK) modulation method to send information, the maximum rate can reach about 2.8M / bps. The price of the power amplifier device in the access terminal is proportional to the size of its power amplifier power. In order to reduce the cost of the access terminal equipment, if the power amplifier power of the access terminal is reduced from 6W to 3W, the maximum signal-to-noise ratio can only reach about 7dB; if the 2 / 3 rate coding method in the QPSK modulation method is used to send information, the maximum rate can reach about 2.1M / bps. The spectrum utilization rate of the access terminal using 3M power amplifier power can only reach 75% of the access terminal using 6W power amplifier power. Therefore, when the access terminal reduces the power amplifier cost and other conditions remain unchanged, the cost of spectrum resources will increase.

[0027] 2) Poor anti-interference ability. For example, in the usage scenario 1, the signal-to-noise ratio of the accessed terminal is about 10dB, and the maximum rate can reach about 2.8M / bps. When severe weather occurs (for example, when it rains heavily), assuming that the rain attenuation is 3dB, the actual signal-to-noise ratio can only reach 7dB. Among them, rain attenuation refers to the attenuation caused by the entry of radio waves into the rain layer, such as the attenuation caused by the absorption of rain particles and the attenuation caused by the scattering of rain particles. When using the 2 / 3 rate coding method in the QPSK modulation method to send information, the maximum rate can reach about 2.1M / bps, and the spectrum efficiency of the system will be reduced to 75%, which will directly affect the bandwidth spectrum utilization and lead to poor user experience.

[0028] 3) Satellite signal coverage has regional differences. Assume that the satellite equivalent isotropic radiated power (EIRP) in satellite signal coverage area A is 55dBw, and the satellite EIRP in area B is 52dBw. If the master station works in area A, the reverse signal-to-noise ratio of the access terminal can reach 10dB; when the master station works in area B, the reverse signal-to-noise ratio of the access terminal can only reach 7dB, that is, when the master station works in different areas, the reverse spectrum efficiency of the access terminal is different.

[0029] Assume that the satellite G / T in satellite signal coverage area A is 10dB / K, and the satellite G / T in area B is 7dB / K. If the access terminal works in area A, the reverse signal-to-noise ratio of the access terminal can reach 10dB; when the access terminal works in area B, the reverse signal-to-noise ratio of the access terminal can only reach 7dB, that is, when the access terminal works in different areas, the reverse spectrum efficiency of the access terminal is different.

[0030] In order to solve the above problems, the present application proposes a carrier adjustment method, device, terminal, network device and storage medium, which can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, support devices with different antenna apertures and reduce the impact of differences in different signal coverage areas while maintaining high spectrum utilization.

[0031] Figure 1 FIG. 1 is a flow chart of a carrier adjustment method provided by an embodiment of the present application. The carrier adjustment method can be applied to access network equipment, such as a satellite base station, etc. Figure 1 As shown, the carrier adjustment method provided in this embodiment includes the following steps.

[0032] Step 110: determine a target serving carrier of the terminal according to the real-time signal-to-noise ratio of the terminal.

[0033] The target service carrier is the carrier that the terminal expects to use. For example, when the real-time signal-to-noise ratio of terminal A is greater than a preset signal-to-noise ratio threshold (e.g., 7dB), the access network device will select a carrier with a bandwidth of 1MHz for terminal A as the target service carrier of terminal A; otherwise, when the initial access signal-to-noise ratio of terminal A is less than or equal to 7dB, the access network device will select a carrier with a bandwidth of 0.5MHz for terminal A as the target service carrier of terminal A.

[0034] Step 120: Determine the attribute category of the terminal according to the target serving carrier and the actual serving carrier of the terminal.

[0035] It should be noted that the actual service carrier is the carrier actually used by the terminal. By counting the number of terminals served by the target service carrier and the current occupancy of the resources of the target service carrier; then counting the number of terminals currently being served by the actual service carrier and the current occupancy of the resources of the actual service carrier, a second statistical result is obtained, and the first statistical result is compared with the second statistical result to determine the attribute category of the terminal, for example, whether the terminal needs to change the corresponding service carrier, if so, the attribute category of the terminal is determined to be the attribute category to be changed, otherwise, the attribute category of the terminal is determined to be the attribute category that does not need to be changed.

[0036] In some implementations, step 120 may be implemented in the following manner: when the target service carrier and the actual service carrier are inconsistent, counting the service demand of the terminal; and determining the attribute category of the terminal based on the service demand of the terminal, the target service carrier and the actual service carrier.

[0037] For example, the target service carrier of the terminal is a carrier with a bandwidth of 0.5 MHz, but the carrier currently providing service to the terminal is a carrier with a bandwidth of 1 MHz. By counting the service demand of the terminal (for example, roughly counting the bandwidth required by the terminal based on the type of service currently being performed by the terminal), the service demand, the target service carrier of the terminal and the actual service carrier are comprehensively considered to determine the attribute category of the terminal.

[0038] Among them, the attribute category of the terminal is determined based on the service demand of the terminal, the target service carrier and the actual service carrier, including: when it is determined that the bandwidth of the target service carrier of the terminal is less than the bandwidth of its actual service carrier, and the service demand of the terminal is less than or equal to a preset service demand threshold, determining that the attribute category of the terminal is the first attribute category; when it is determined that the bandwidth of the target service carrier of the terminal is greater than the bandwidth of its actual service carrier, and the service demand of the terminal is greater than the preset service demand threshold, determining that the attribute category of the terminal is the second attribute category.

[0039] For example, if the target service carrier of the terminal is a carrier with a bandwidth of 0.5MHz, but the carrier currently providing service to the terminal is a carrier with a bandwidth of 1MHz, but the terminal is reading a novel and requires less bandwidth resources, and does not need to occupy larger bandwidth resources, then it is determined that the attribute category of the terminal is the second attribute category; otherwise, if the target service carrier of the terminal is a carrier with a bandwidth of 1MHz, but the carrier currently providing service to the terminal is a carrier with a bandwidth of 0.5MHz, but the terminal is downloading video files and requires more bandwidth resources, and the access network device needs to provide larger bandwidth resources, then it is determined that the attribute category of the terminal is the first attribute category.

[0040] Step 130: Adjust the bandwidth of the actual service carrier according to the attribute type of the terminal.

[0041] In some embodiments, the terminal has different attribute categories, and the corresponding adjustment method of the actual service carrier of the terminal is also different. It is possible to split the actual service carrier, or it is possible to merge multiple actual service carriers to meet the different business needs of the terminal. The above adjustment method for the bandwidth of the actual service carrier is only an example, which can be set according to the actual situation. Other unspecified adjustment methods for the bandwidth of the actual service carrier are also within the scope of protection of this application and will not be repeated here.

[0042] In some implementations, step 130 can be implemented in the following manner: when the attribute category of the terminal is the first attribute category, the number of carriers that need to be bandwidth split is counted to obtain the number of first-category carriers; based on the number of first-category carriers, the bandwidth of the actual service carrier is adjusted; or, when the attribute category of the terminal is the second attribute category, the number of carriers that need to be bandwidth merged is counted to obtain the number of second-category carriers; based on the number of second-category carriers, the bandwidth of the actual service carrier is adjusted.

[0043] It should be noted that when the attribute category of the terminal is the first attribute category, it means that the current terminal does not need too much bandwidth resources to meet the needs of the terminal, so that the actual service carrier of the terminal is wasted. Therefore, the actual service carrier of the terminal can be split into two 0.5MHz bandwidth carriers (i.e., the first type of carriers). One of the 0.5MHz bandwidth carriers still provides services for the terminal, and the remaining 0.5MHz bandwidth carrier can be released to provide services for other terminals, thereby improving the frequency band utilization of the system. By counting the number of terminals whose attribute categories are the first attribute category of the terminals accessed in the system, the number of carriers that need to be split is determined, and the number of first type carriers is obtained. The bandwidth of the actual service carrier of the terminal is adjusted according to the number of first type carriers and the needs of the terminal. For example, two first type carriers are merged into one carrier, and the merged carrier is used as the actual service carrier of the terminal for use by the terminal.

[0044] When the attribute category of the terminal is the second attribute category, the actual service carrier currently allocated to the terminal is insufficient to support the business needs of the terminal. The terminal needs more bandwidth resources, so the idle carrier resources in the system can be queried, and then the actual service carrier of the terminal and the idle carrier resources obtained by the query can be merged to obtain the second type of carrier. By counting the number of terminals whose attribute categories are the second attribute category of the terminals accessed in the system, the number of carriers that need to be merged is determined, and then the number of second type carriers is obtained. According to the number of second type carriers and the needs of the terminal, the bandwidth of the actual service carrier of the terminal is adjusted. For example, a second type carrier is split into two different carriers, and one of the split carriers is used as the actual service carrier of the terminal for use by the terminal.

[0045] In a specific implementation, by comprehensively considering the number of first-class carriers and the number of second-class carriers, the demand for carrier bandwidth to be increased is determined, so that the access network device can reasonably divide the baseband bandwidth according to the demand to be increased to improve the utilization rate of the carrier bandwidth. For example, the access network device originally divides the baseband bandwidth into 5 1MHz carrier bandwidths and 10 0.5MHz carrier bandwidths. The number of first-class carriers obtained by statistics is 1, and the number of second-class carriers is 1, that is, the number of carriers with 1MHz bandwidth that need to be split into 2 carriers with 0.5MHz bandwidth is 1, and the number of carriers with 2 0.5MHz bandwidths that need to be merged into a carrier with 1MHz bandwidth is 1, that is, the demand for carrier bandwidth to be increased is 2, then the access network device dynamically configures the original bandwidths of 5 1MHz carriers and 10 0.5MHz carriers into 4 1MHz carrier bandwidths and 12 0.5MHz carrier bandwidths. To meet the needs of the terminal and improve the frequency band utilization rate of the system.

[0046] In this embodiment, the target service carrier of the terminal is determined by the real-time signal-to-noise ratio of the accessed terminal, and the attribute category of the terminal is determined according to the target service carrier and the actual service carrier of the terminal, and then the bandwidth of each carrier is adjusted according to the attribute category of the terminal to adapt to the real-time needs of the terminal, so as to ensure that most of the accessed terminals can use high-order modulation and coding methods to send information, make full use of the carrier resources of the satellite communication system, and improve the spectrum utilization rate in the satellite communication system. In addition, while maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, enable the support of devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0047] In some implementations, before step 110, the method may further include: periodically measuring a real-time signal-to-noise ratio of the terminal.

[0048] In this embodiment, by periodically measuring the real-time signal-to-noise ratio of the terminal, the communication status of the terminal can be obtained in real time, for example, whether the terminal is subject to strong noise interference during the communication process. If the noise interference of the terminal is strengthened, the access network device can adjust the RF transmission power of the terminal in real time to improve the communication quality with the terminal.

[0049] In some implementations, after step 130, the method may further include: if it is determined that the adjusted bandwidth of the actual service carrier is smaller than the service requirement bandwidth of the terminal, switching the terminal from the actual service carrier to the target service carrier.

[0050] For example, when the user of a terminal watches a video file online, the terminal's business demand bandwidth will increase instantly, and the network side equipment needs to allocate more carrier bandwidth to the terminal. However, the bandwidth of the actual service carrier after adjustment cannot meet the terminal's business demand bandwidth. Therefore, the terminal needs to be switched from the actual service carrier to the target service carrier to work, so that the terminal can send data in a high-order modulation and coding manner, and at the same time, receive and process data sent by the network side equipment in a high-order modulation and coding manner. The bandwidth of the target service carrier can meet the terminal's business demand bandwidth, which improves the system spectrum utilization and improves the user experience.

[0051] In this embodiment, by dynamically switching the service carrier of the terminal, that is, switching the terminal from the actual service carrier to the target service carrier, it is ensured that the bandwidth of the target service carrier can meet the business demand bandwidth of the terminal, fully utilize the carrier bandwidth resources of the system, and improve the system spectrum utilization.

[0052] Figure 2 FIG. 2 is a flow chart of a carrier adjustment method provided by another embodiment of the present application. The carrier adjustment method can be applied to access network equipment, such as a satellite base station, etc. Figure 2 As shown, the carrier adjustment method includes the following steps:

[0053] Step 210: Collect statistics on load information of each working carrier.

[0054] The working carrier is a carrier obtained by dividing the baseband bandwidth.

[0055] It should be noted that in order to control the interference between carriers in the frequency division multiplexing system, a guard band is set between carriers. For the sake of simplicity, this application takes the baseband bandwidth as an example and does not consider the impact of the guard band. The satellite communication system can support carriers of different bandwidths, and the access network equipment periodically counts the load information of various bandwidth carriers.

[0056] For example, if the baseband bandwidth is 10 MHz, the access network device may divide the 10 MHz into five 1 MHz carriers and ten 0.5 MHz carriers by default, and periodically send the above carrier allocation information to all access terminals under the signal coverage of the access network device in the form of broadcast messages using a broadcast channel.

[0057] Step 220: Determine the initial access signal-to-noise ratio of the terminal according to the received access request sent by the terminal.

[0058] For example, the theoretical signal-to-noise ratio of terminal A is 10dB, and the access network device receives the access request of terminal A through the access channel, and estimates the initial access signal-to-noise ratio of terminal A to be 6dB based on the access channel. The estimation can be performed using the link budget theory to calculate the initial access signal-to-noise ratio, or the relevant parameters of the access channel can be used to estimate the initial access signal-to-noise ratio using channel estimation and other methods. The above estimation is only an example, which can be set according to the actual situation. Other estimation methods not described are also within the scope of protection of this application and will not be repeated here.

[0059] Step 230: Determine an initial target serving carrier according to the initial access signal-to-noise ratio and the load information of each working carrier.

[0060] It should be noted that the access network equipment will periodically collect statistics on the load information of each working carrier to determine whether the current spectrum utilization is qualified. For example, the first working carrier is overloaded, the second working carrier is idle, and the resource utilization of the third working carrier does not reach 50%. In order to balance the working conditions of each working carrier, the access terminal will be adjusted accordingly to ensure that the terminal can obtain a suitable working carrier to serve it.

[0061] For example, it is preset that when the initial access signal-to-noise ratio of terminal A is greater than a preset signal-to-noise ratio threshold (e.g., 7dB), the access network device will select a carrier with a bandwidth of 1MHz as the initial target service carrier of terminal A for terminal A; otherwise, when the initial access signal-to-noise ratio of terminal A is less than or equal to 7dB, the access network device will select a carrier with a bandwidth of 0.5MHz as the initial target service carrier of terminal A for terminal A. If at a certain moment, it is measured that the carrier with a bandwidth of 0.5MHz is overloaded (e.g., the utilization rate of the carrier with a bandwidth of 0.5MHz has reached more than 98%), and the carrier with a bandwidth of 1MHz is not overloaded at this time, the access network device will select the carrier with a bandwidth of 1MHz as the target service carrier of terminal A.

[0062] It should be noted that the initial target service carrier is the target service carrier assigned by the access network device to the terminal when the terminal initially accesses the access device. Since the access network device periodically measures the signal-to-noise ratio of the terminal, the target service carrier will also change periodically. For example, when the signal-to-noise ratio of the terminal is obtained in a certain measurement, the last target service carrier of the terminal is the actual service carrier of the terminal this time. For example, the target service carrier corresponding to the signal-to-noise ratio of the terminal obtained in the last measurement is a carrier with a bandwidth of 1MHz; because the service demand of the terminal has decreased, the target service carrier corresponding to the signal-to-noise ratio of the terminal obtained in this measurement is a carrier with a bandwidth of 0.5MHz. At this time, the carrier with a bandwidth of 1MHz is the actual service carrier of the terminal.

[0063] Step 240: Determine a target serving carrier of the terminal according to the real-time signal-to-noise ratio of the terminal.

[0064] Step 250: Determine the attribute category of the terminal according to the target serving carrier and the actual serving carrier of the terminal.

[0065] Step 260: Adjust the bandwidth of the actual service carrier according to the attribute type of the terminal.

[0066] It should be noted that steps 240 to 260 in this embodiment are consistent with steps 110 to 130 in the previous embodiment, and will not be described in detail here.

[0067] In this embodiment, by counting the load information of each working carrier, it is possible to understand the working conditions of each working carrier, and in response to the access request sent by the terminal, the initial access signal-to-noise ratio of the terminal is estimated; the initial target service carrier is determined by the initial access signal-to-noise ratio, and the initial target service carrier is compared with the load information of each working carrier in the system, the target service carrier that meets the terminal demand is screened out, and the target service carrier of the terminal is further determined according to the real-time signal-to-noise ratio of the terminal in real time, and then the attribute category of the terminal is determined, so that the bandwidth of the actual service carrier can be dynamically adjusted according to the attribute category of the terminal, and then the target service carrier of the terminal is adjusted, so as to ensure that most of the accessed terminals use high-order modulation and coding methods to transmit data, make full use of the carrier resources of the system, improve the spectrum utilization rate in satellite communication, and at the same time, improve the anti-interference ability of the satellite communication system and improve the user experience.

[0068] Figure 3 FIG. 2 is a flow chart of a carrier adjustment method provided by another embodiment of the present application. The carrier adjustment method can be applied to a terminal, such as a smart phone. Figure 3 As shown, the carrier adjustment method provided in this embodiment includes the following steps.

[0069] Step 310: Select a target access carrier according to a theoretical signal-to-noise ratio.

[0070] The theoretical signal-to-noise ratio is the theoretical value of the signal-to-noise ratio when the signal sent by the terminal reaches the access network device.

[0071] For example, it is preset that when the theoretical signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold (e.g., 7dB), terminal A will select a carrier with a bandwidth of 1MHz as its target access carrier; otherwise, when the theoretical signal-to-noise ratio is less than or equal to 7dB, terminal A will select a carrier with a bandwidth of 0.5MHz as its target access carrier. By estimation, it is determined that the theoretical signal-to-noise ratio of terminal A is 10dB, so terminal A selects a carrier with a bandwidth of 1MHz as its target access carrier. If terminal A uses a 3W power amplifier, and other conditions remain unchanged, it is estimated that the theoretical signal-to-noise ratio of terminal A is 6dB, so terminal A selects a carrier with a bandwidth of 0.5MHz as its target access carrier.

[0072] In some implementations, before step 310, it also includes: estimating the theoretical signal-to-noise ratio based on the specifications of the power amplifier, the antenna aperture gain, the equivalent isotropic radiated power (ie, EIRP) information of the area, the reverse carrier information, and the performance index. The reverse carrier information includes any one of the carrier bandwidth and the carrier frequency band information. It should be noted that the performance index includes the G / T value, and the theoretical signal-to-noise ratio can also be estimated based on the G / T value, where G represents the receiving gain of the antenna and T represents the noise temperature of the receiving system.

[0073] For example, the EIRP of the first service satellite is 55dBw, and the area where the accessed terminal A is located is 123° east longitude and 30° north latitude. When terminal A uses a 6W power amplifier and a 60cm aperture reflector antenna, and selects the first service satellite to provide communication services for terminal A, based on a 1MHz bandwidth, after theoretical calculation of the link budget, it can be estimated that the maximum theoretical signal-to-noise ratio when terminal A reaches the access network device (for example, the base station of the first server satellite) is 10dB.

[0074] The link budget refers to the calculation of all gains and attenuations in the transmitter, communication link, propagation environment (e.g., atmosphere, coaxial cable, waveguide, optical fiber, etc.) and receiver in a communication system.

[0075] Step 320: Send an access request to the access network device via the target access carrier.

[0076] When the access network device receives the access request sent by the terminal, it will determine the attribute category of the terminal based on the terminal's target service carrier and the terminal's actual service carrier, and adjust the bandwidth of the actual service carrier based on the terminal's attribute category, so that the terminal can obtain the best carrier to serve it. At the same time, the bandwidth of the actual service carrier is adjusted by the access network device, so that the spectrum utilization of the carrier is improved, and the carrier resources of the system can be fully utilized.

[0077] In one implementation, after the access network device adjusts the bandwidth of the actual service carrier according to the attribute category of the terminal, the access network device can send the adjusted carrier information to the terminal, so that the terminal can re-access the access network device based on the new adjusted carrier information, for example, the terminal performs hard switching, etc., to ensure that the terminal can find the most suitable carrier for access, improve the spectrum utilization of the carrier, and be closer to the needs of terminal users to improve the user experience.

[0078] In this embodiment, by selecting the target access carrier according to the theoretical signal-to-noise ratio, the access request can be sent to the access network device through the target access carrier, so that the access network device can determine the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and adjust the bandwidth of the actual service carrier according to the attribute category of the terminal. It is ensured that the idle carrier resources can be fully utilized, thereby improving the spectrum utilization rate in the satellite communication system. While maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, enable support for devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0079] It should be clear that the present invention is not limited to the specific configurations and processes described in the above embodiments and shown in the figures. For the convenience and brevity of description, a detailed description of the known methods is omitted here, and the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, which will not be repeated here.

[0080] Figure 4 FIG. 2 is a schematic diagram showing the structure of a carrier adjustment device provided by an embodiment of the present invention. The carrier adjustment device can be applied to access network equipment, such as a satellite base station. Figure 4 As shown, the carrier adjustment device may include the following modules.

[0081] The target service carrier determination module 410 is used to determine the target service carrier of the terminal according to the real-time signal-to-noise ratio of the terminal, wherein the target service carrier is the carrier that the terminal expects to use; the classification module 420 is used to determine the attribute category of the terminal according to the target service carrier and the actual service carrier of the terminal, wherein the actual service carrier is the carrier actually used by the terminal; the adjustment module 430 is used to adjust the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0082] In this embodiment, the target service carrier determination module determines the target service carrier of the terminal according to the real-time signal-to-noise ratio of the accessed terminal, and the classification module determines the attribute category of the terminal according to the target service carrier and the actual service carrier of the terminal, and then the adjustment module is used to adjust the bandwidth of each carrier according to the attribute category of the terminal to meet the real-time needs of the terminal. This makes it possible to fully utilize the carrier resources of the system and improve the spectrum utilization rate in satellite communications. In addition, while maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier components of the accessed terminal, enable support for devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0083] Figure 5 This is a block diagram of a terminal provided in an embodiment of the present application. Figure 5 As shown, the terminal may include the following modules: a selection module 510, used to select a target access carrier according to a theoretical signal-to-noise ratio, wherein the theoretical signal-to-noise ratio is a theoretical value of a signal-to-noise ratio when a signal sent by the terminal reaches an access network device; a sending module 520, used to send an access request to the access network device through the target access carrier, so that the access network device determines the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and adjusts the bandwidth of the actual service carrier according to the attribute category of the terminal.

[0084] In this embodiment, the target access carrier is selected based on the theoretical signal-to-noise ratio by using the selection module, so that the target access carrier can be used to send the access request to the access network device by using the sending module, so that the access network device can determine the attribute category of the terminal based on the target service carrier of the terminal and the actual service carrier of the terminal, and adjust the bandwidth of the actual service carrier based on the attribute category of the terminal. It is ensured that the idle carrier resources can be fully utilized, thereby improving the spectrum utilization rate in the satellite communication system. While maintaining a high spectrum utilization rate, it can improve the anti-interference ability of the satellite communication system, reduce the cost of the power amplifier device of the accessed terminal, enable the support of devices with different antenna calibers, and reduce the impact of differences in different signal coverage areas.

[0085] It is worth mentioning that all modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, or a part of a physical unit, or can be implemented in a combination of multiple physical units. In addition, the present invention is not limited to the specific configurations and processes described in the above embodiments and shown in the figures. For the convenience and brevity of description, a detailed description of the known methods is omitted here. And the specific working process of the above-described systems, modules and units can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0086] Figure 6 It is a structural diagram of an exemplary hardware architecture of a computing device capable of implementing the carrier adjustment method and apparatus according to an embodiment of the present application.

[0087] like Figure 6 As shown, the electronic device 600 includes an input device 601, an input interface 602, a central processing unit 603, a memory 604, an output interface 605, and an output device 606. The input interface 602, the central processing unit 603, the memory 604, and the output interface 605 are connected to each other via a bus 607, and the input device 601 and the output device 606 are connected to the bus 607 via the input interface 602 and the output interface 605, respectively, and then connected to other components of the computing device 600.

[0088] In some embodiments, the input device 601 receives input information from the outside and transmits the input information to the central processing unit 603 through the input interface 602; the central processing unit 603 processes the input information based on the computer executable instructions stored in the memory 604 to generate output information, temporarily or permanently stores the output information in the memory 604, and then transmits the output information to the output device 606 through the output interface 605; the output device 606 outputs the output information to the outside of the electronic device 600 for user use.

[0089] In one embodiment, the electronic device may be implemented as a network device, which may include: a memory configured to store a program; and a processor configured to run the program stored in the memory to execute the carrier adjustment method described in the above embodiment.

[0090] The above is only an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application. In general, various embodiments of the present application can be implemented in hardware or special circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, a microprocessor or other computing device, although the present application is not limited thereto.

[0091] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0092] The block diagram of any logic flow in the accompanying drawings of the present application can represent program steps, or can represent interconnected logic circuits, modules and functions, or can represent a combination of program steps and logic circuits, modules and functions. The computer program can be stored on a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory device and system (digital versatile disc DVD or CD disc), etc. Computer-readable media may include non-transient storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FGPA) and a processor based on a multi-core processor architecture.

[0093] By way of exemplary and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, but will not depart from the scope of the present invention. Therefore, the proper scope of the present invention will be determined according to the claims.

Claims

1. A carrier adjustment method, characterized in that: Applied to a satellite base station, the method comprises: Determining a target serving carrier of the terminal according to a real-time signal-to-noise ratio of the terminal, wherein the target serving carrier is a carrier that the terminal expects to use; determining an attribute category of the terminal according to the target serving carrier and an actual serving carrier of the terminal, wherein the actual serving carrier is a carrier actually used by the terminal; When the attribute category of the terminal is the first attribute category, the number of carriers that need to be bandwidth split is counted to obtain the number of first-category carriers; according to the number of the first-category carriers, the bandwidth of the actual service carrier is adjusted; the first attribute category is a category determined when the bandwidth of the target service carrier of the terminal is less than the bandwidth of its actual service carrier, and the service demand of the terminal is less than or equal to a preset service demand threshold; or, When the attribute category of the terminal is the second attribute category, the number of carriers that need to be bandwidth merged is counted to obtain the number of second-category carriers; according to the number of the second-category carriers, the bandwidth of the actual service carrier is adjusted; the second attribute category is a category determined when the bandwidth of the target service carrier of the terminal is greater than the bandwidth of its actual service carrier, and the service demand of the terminal is greater than the preset service demand threshold.

2. The method according to claim 1, characterized in that After the step of adjusting the bandwidth of the actual service carrier, the method further includes: If it is determined that the adjusted bandwidth of the actual service carrier is smaller than the service required bandwidth of the terminal, the terminal is switched from the actual service carrier to the target service carrier to operate.

3. The method according to claim 1, characterized in that Before the step of determining the target serving carrier of the terminal according to the real-time signal-to-noise ratio of the terminal, the method further includes: Counting load information of each working carrier, wherein the working carrier is a carrier obtained by dividing the baseband bandwidth; Determining an initial access signal-to-noise ratio of the terminal according to the received access request sent by the terminal; An initial target serving carrier is determined according to the initial access signal-to-noise ratio and load information of each of the working carriers.

4. The method according to claim 1, characterized in that Before the step of determining the target serving carrier of the terminal according to the real-time signal-to-noise ratio of the terminal, the method further includes: The real-time signal-to-noise ratio of the terminal is measured periodically.

5. A carrier adjustment method, characterized in that: Applied to a terminal, the method comprises: Selecting a target access carrier according to a theoretical signal-to-noise ratio, wherein the theoretical signal-to-noise ratio is a theoretical value of a signal-to-noise ratio when a signal sent by a terminal reaches an access network device; An access request is sent to the access network device through the target access carrier, so that the access network device determines the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and when the attribute category of the terminal is the first attribute category, the number of carriers that need to be bandwidth-splitting is counted to obtain the number of first-category carriers; the bandwidth of the actual service carrier is adjusted according to the number of the first-category carriers; the first attribute category is a category determined when the bandwidth of the target service carrier of the terminal is less than the bandwidth of its actual service carrier, and the service demand of the terminal is less than or equal to a preset service demand threshold; or, when the attribute category of the terminal is the second attribute category, the number of carriers that need to be bandwidth-merged is counted to obtain the number of second-category carriers; the bandwidth of the actual service carrier is adjusted according to the number of the second-category carriers; the second attribute category is a category determined when the bandwidth of the target service carrier of the terminal is greater than the bandwidth of its actual service carrier, and the service demand of the terminal is greater than the preset service demand threshold.

6. The method according to claim 5, characterized in that Before the step of selecting a target access carrier according to the theoretical signal-to-noise ratio, the method further includes: The theoretical signal-to-noise ratio is estimated based on the specifications of the power amplifier, the antenna aperture gain, the equivalent isotropic radiated power information of the area, the reverse carrier information and the performance index.

7. The method according to claim 6, characterized in that The reverse carrier information includes any one of carrier bandwidth and carrier frequency band information.

8. A carrier adjustment device, characterized in that: The device is applied to a satellite base station, and comprises: A target service carrier determination module, configured to determine a target service carrier of the terminal according to a real-time signal-to-noise ratio of the terminal, wherein the target service carrier is a carrier that the terminal expects to use; a classification module, configured to determine an attribute category of the terminal according to the target serving carrier and an actual serving carrier of the terminal, wherein the actual serving carrier is a carrier actually used by the terminal; An adjustment module is used to count the number of carriers that need to be bandwidth-splitting to obtain the number of first-category carriers when the attribute category of the terminal is the first attribute category; adjust the bandwidth of the actual service carrier according to the number of the first-category carriers; the first attribute category is a category determined when the bandwidth of the target service carrier of the terminal is less than the bandwidth of its actual service carrier, and the service demand of the terminal is less than or equal to a preset service demand threshold; or, when the attribute category of the terminal is the second attribute category, count the number of carriers that need to be bandwidth-merged to obtain the number of second-category carriers; adjust the bandwidth of the actual service carrier according to the number of the second-category carriers; the second attribute category is a category determined when the bandwidth of the target service carrier of the terminal is greater than the bandwidth of its actual service carrier, and the service demand of the terminal is greater than the preset service demand threshold.

9. A terminal, characterized in that: The terminal comprises: A selection module, configured to select a target access carrier according to a theoretical signal-to-noise ratio, wherein the theoretical signal-to-noise ratio is a theoretical value of a signal-to-noise ratio when a signal sent by a terminal reaches an access network device; A sending module, used for sending an access request to the access network device through the target access carrier, so that the access network device determines the attribute category of the terminal according to the target service carrier of the terminal and the actual service carrier of the terminal, and when the attribute category of the terminal is the first attribute category, counts the number of carriers that need to be bandwidth-splitting to obtain the number of first-category carriers; according to the number of the first-category carriers, adjusts the bandwidth of the actual service carrier; the first attribute category is a category determined when the bandwidth of the target service carrier of the terminal is less than the bandwidth of its actual service carrier, and the service demand of the terminal is less than or equal to a preset service demand threshold; or, when the attribute category of the terminal is the second attribute category, counts the number of carriers that need to be bandwidth-merged to obtain the number of second-category carriers; according to the number of the second-category carriers, adjusts the bandwidth of the actual service carrier; the second attribute category is a category determined when the bandwidth of the target service carrier of the terminal is greater than the bandwidth of its actual service carrier, and the service demand of the terminal is greater than the preset service demand threshold.

10. A network device comprising: one or more processors; A memory having one or more programs stored thereon, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any one of claims 1-4, or the method described in any one of claims 5-7.

11. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 4 or the method according to any one of claims 5 to 7 is implemented.

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