WO2020098447A1 - 卫星通信方法和卫星站点 - Google Patents

卫星通信方法和卫星站点 Download PDF

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Publication number
WO2020098447A1
WO2020098447A1 PCT/CN2019/111749 CN2019111749W WO2020098447A1 WO 2020098447 A1 WO2020098447 A1 WO 2020098447A1 CN 2019111749 W CN2019111749 W CN 2019111749W WO 2020098447 A1 WO2020098447 A1 WO 2020098447A1
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Prior art keywords
station
communication
site
satellite
target
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PCT/CN2019/111749
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English (en)
French (fr)
Inventor
龚大刚
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中兴通讯股份有限公司
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Publication of WO2020098447A1 publication Critical patent/WO2020098447A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • This application relates to the field of communications, and in particular to a satellite communication method and satellite site.
  • Satellite communication systems are usually configured for star communication.
  • the star communication mode is convenient for centralized control of resources and improving the utilization rate of air interface resources.
  • the use of star communication mode may cause low communication efficiency. And the problem of long communication time.
  • Embodiments of the present application provide a satellite communication method and a satellite station to solve the problems of low communication efficiency and long communication time when using the star communication method.
  • a satellite communication method including: a target station receiving a communication request from a first station, where the communication request carries an identifier of the first station and an identifier of a second station; The first station and the second station send a communication notification message, and the communication notification message carries a channel identifier, so that the first station and the second station establish a communication connection between the two based on the channel identifier; Wherein, the target site and the first site communicate via satellite, and the target site and the second site communicate via satellite.
  • a satellite communication method which includes: a first station sends a communication request to a target station, where the communication request carries the identifier of the first station and the identifier of the second station; the first station receives from A communication notification message of the target station, where the communication notification message carries a channel identifier; the first station establishes a communication connection with the second station based on the channel identifier; wherein, the first station and the target The sites communicate via satellite, and the first site and the second site communicate via satellite.
  • a satellite communication method including: a second station receives a communication notification message from a target station, the communication notification message carries a channel identifier; the second station is based on the channel identifier and the first A station establishes a communication connection; wherein, the second station and the target station communicate via satellite, and the first station and the second station communicate via satellite.
  • a satellite site including: a receiving module and a sending module, wherein: the receiving module is configured to receive a communication request from a first site, and the communication request carries an identifier of the first site and An identifier of the second station; the sending module is configured to send a communication notification message to the first station and the second station, and the communication notification message carries a channel identifier so that the first station and the second station The two stations establish a communication connection between the two based on the channel identifier; wherein, the satellite station and the first station communicate via satellite, and the satellite station and the second station communicate via satellite.
  • a satellite site including: a sending module, a receiving module, and a communication connection establishment module, wherein: the sending module is configured to send a communication request to a target site, where the communication request carries the satellite site ’s An identifier and an identifier of the second site; the receiving module is used to receive a communication notification message from the target site, the communication notification message carries a channel identifier; the communication connection establishment module is used to based on the receiving module The received channel identification establishes a communication connection with the second site; wherein, the satellite site and the target site communicate via satellite, and the satellite site and the second site communicate via satellite.
  • a satellite site which includes a receiving module and a communication connection establishment module, wherein: the receiving module is configured to receive a communication notification message from a target site, the communication notification message carries a channel identifier; the communication connection establishment module, For establishing a communication connection with the first site based on the channel identifier received by the receiving module; wherein, the satellite site and the target site communicate via satellite, and the satellite site and the first site communicate via satellite Communication.
  • a non-transitory computer-readable storage medium is provided, and a computer program is stored on the storage medium, and when the computer program is executed, the following operations are implemented: receiving a communication request from a first site, the communication request Carries the identifier of the first station and the identifier of the second station; sends a communication notification message to the first station and the second station, and the communication notification message carries a channel identifier so that the first station and The second station establishes a communication connection between the two based on the channel identifier.
  • a non-transitory computer-readable storage medium stores a computer program, and when the computer program is executed, the following operations are performed: sending a communication request to a target site, the communication request carrying An identifier of the first station and an identifier of the second station; receiving a communication notification message from the target station, where the communication notification message carries a channel identifier; and establishing a communication connection with the second station based on the channel identifier.
  • a non-transitory computer-readable storage medium is provided, and a computer program is stored on the storage medium, and when the computer program is executed, the following operations are implemented: receiving a communication notification message from a target site, the communication notification The channel identifier is carried in the message; a communication connection is established with the first station based on the channel identifier.
  • Figure 1-1 is a schematic diagram of the data transmission method in the star communication mode
  • Figure 1-2 is a schematic diagram of the data transmission method during direct communication between two sites
  • 1-3 is a flowchart of a satellite communication method provided by an embodiment of the present invention.
  • FIG. 2 is a flowchart of a satellite communication method provided by an embodiment of the present invention.
  • FIG. 3 is a flowchart of a satellite communication method provided by an embodiment of the present invention.
  • FIG. 4 is a flowchart of an example satellite communication method based on SCPC provided by an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a satellite site provided by an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a satellite site provided by an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a satellite site provided by an embodiment of the present invention.
  • the satellite communication method provided by the embodiment of the present invention may involve a target station, a first station, and a second station.
  • the target site, the first site and the second site are all satellite sites.
  • the target station can be the main station, that is, it can be a large station fixed on the land on the satellite communication link, and is used as a hub for satellite communication ground communication.
  • the first station and the second station may be end stations, that is, they may be fixed or non-fixed small stations on land, sea, and air on the satellite communication link, and are the endpoints of satellite communication.
  • the data from the first station needs to be transmitted to the target station (master station) first, and then from the target station (master station) to the second station , See Figure 1-1.
  • the data from the first site may not need to be transmitted to the target site (master site) ), But can be directly transmitted to the second site via satellite, see Figure 1-2.
  • the satellite communication method provided by the embodiment of the present invention may include: Step 110: The target station receives a communication request from a first station, where the communication request carries the identifier of the first station and the identifier of the second station.
  • the target site may be a satellite site that mainly plays a controlling role in the communication process.
  • the identifier of the first site may be the number of the first site, the IP address assigned to the first site, the MAC (Media Access Control, Media Access Control) address of the first site, and so on.
  • the identifier of the second site may be the number of the second site, the IP address assigned to the second site, the MAC address of the second site, and so on.
  • the target station Before the target station receives the communication request from the first station in step 110, the target station may first establish a first satellite communication link with the first station.
  • the receiving of the communication request from the first station by the target station in step 110 may include: the target station receiving the communication request transmitted from the first station through the first satellite communication link.
  • Step 120 The target station sends a communication notification message to the first station and the second station, where the communication notification message carries a channel identifier, so that the first station and the second station are based on the channel
  • the identification establishes a communication connection between the two.
  • the target site and the first site communicate via satellite
  • the target site and the second site communicate via satellite
  • step 110 and step 120 can be completed through the satellite link shown in FIG. 1-1.
  • the data transmission between the two sites can be completed based on the links shown in Figure 1-2.
  • the communication request may be a single channel single carrier (SCPC) communication request
  • the channel identifier may be an SCPC channel identifier
  • the communication connection may be an SCPC communication connection.
  • SCPC single channel single carrier
  • the channel identifier carried in the communication notification message may be an identifier of an SCPC channel in the idle SCPC channel.
  • the channel identifier may be an identifier of a dedicated channel.
  • the target station can establish the correspondence between the channel identifier and the station in advance, and inform each station in advance. In this way, after receiving the communication notification message carrying the channel identifier, each station can determine the station that needs to communicate according to the channel identifier, and then establish a communication connection between the stations.
  • channel identifier a can be configured to correspond to station 1 and station 2
  • channel identifier b can correspond to station 3 and station 4
  • channel identifier c can correspond to station 5 and station 6, and Send these corresponding information to each site.
  • the station 3 may later know that it is not the party communicating, and after receiving the communication notification message carrying the channel identifier b, it may know that it is the party communicating.
  • a communication connection can be established with the other party of communication (ie, site 4).
  • the target station may send a communication notification message carrying a channel identifier to the first station and the second station.
  • the first station and / or the second station can establish a communication connection between the two based on the channel identifier and directly communicate.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message may further carry the identifier of the first site and the identifier of the second site.
  • each station that receives the communication notification message can know whether it is a party to the communication according to the identifier in the communication notification message, and can establish a communication connection with the other station according to the identifier of the other station.
  • the communication notification message carrying the identifier of the first site and the identifier of the second site may help quickly establish a communication connection between the first site and the second site.
  • the communication notification message also carries communication time indication information.
  • the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the communication cut-off time can specify that both communication parties end the communication when a cut-off time arrives, regardless of whether the data transmission of the two is completed. For example, both sides of the communication start communication at 11 o'clock, and after ten minutes, the communication ends at 11:10 (cut-off time).
  • the communication duration can specify that both parties of the communication end the communication of the two when a communication duration arrives, regardless of whether the data transmission of the two is completed. For example, both parties of the communication start communication at 11 o'clock, and the communication ends at 11:10 after ten minutes (communication time).
  • the embodiment of the present invention can prevent the communication station from occupying the channel for too long by carrying the communication time indication information in the communication notification message, and realize reasonable and efficient utilization of channel resources. It should be understood that, when the communication notification message does not carry the communication time indication information, the communication can be ended when both parties of the communication complete the communication.
  • the satellite communication method provided by the embodiment of the present invention may also The method includes the target station determining whether a communication establishment condition is satisfied between the first station and the second station; the target station sending a communication notification message to the first station and the second station includes: When the communication establishment condition is satisfied between the first station and the second station, the target station sends a communication notification message to the first station and the second station. In this way, it can be ensured that the target station sends the communication notification message only when the first station and the second station meet the communication establishment conditions, to avoid wasting channel resources due to sending an invalid communication notification message.
  • the communication establishment conditions can be set according to requirements.
  • the target station determining whether the communication establishment condition is satisfied between the first station and the second station may include: the target station determining the first station based on the identifier of the first station Whether the site is configured with SCPC communication function, and based on the identifier of the second site, determine whether the second site is configured with SCPC communication function; the target site determines whether the second site has established a second satellite with the target site Communication link; the target site determines whether there is an idle SCPC channel; at the target site, it is determined that both the first site and the second site are configured with an SCPC communication function, and the second site has already communicated with the target site When a satellite communication link is established and there is an idle SCPC channel, it is determined that the communication establishment condition is satisfied between the first station and the second station.
  • the selection of the above communication conditions can ensure that the first site and the second site can establish an effective communication connection.
  • one or more limiting conditions may be additionally added on the basis of the above communication conditions, so that the established communication connection can better meet the demand.
  • the satellite communication method provided by the embodiment of the present invention may further include: The target station receives the communication end message from the first station and / or the second station. In this way, the target station can better manage the channel resources according to the communication end message, for example, the channel resources between the first station and the second station are used for subsequent inter-site communication.
  • FIG. 2 is a flowchart of a satellite communication method provided by an embodiment of the present invention.
  • the satellite communication method provided by an embodiment of the present invention may include: Step 210: A first station sends a communication request to a target station, where the communication request carries the identifier of the first station and the identifier of the second station.
  • the first site and the second site may interact in advance to obtain the identification of each other.
  • the first station may send a communication request containing the identity of the station and the identity of the station (that is, the second station) to be communicated to the target station.
  • Step 220 The first station receives a communication notification message from the target station, where the communication notification message carries a channel identifier.
  • Step 230 The first station establishes a communication connection with the second station based on the channel identifier.
  • first site and the target site communicate via satellite
  • first site and the second site communicate via satellite
  • the channel identifier may be an identifier of a dedicated channel.
  • the first station may obtain the correspondence between the channel identifier and the station from the target station in advance. In this way, after receiving the communication notification message carrying the channel identifier, the first station can determine the station that needs to communicate according to the channel identifier, and then establish a communication connection between the stations.
  • the correspondence between the channel identifier and the station may be as follows: channel identifier a corresponds to station 1 and station 2, channel identifier b corresponds to station 3 and station 4, channel identifier c corresponds to site 5 and site 6.
  • Each station may obtain the aforementioned correspondence between the channel identifier and the station from the target station.
  • the station 3 may later know that it is not the party communicating, and after receiving the communication notification message carrying the channel identifier b, it may know that it is the party communicating.
  • a communication connection can be established with the other party of communication (ie, site 4).
  • the communication request may be an SCPC communication request
  • the channel identifier may be an SCPC channel identifier
  • the communication connection may be an SCPC communication connection.
  • the communication notification message may further carry the identifier of the first site and the identifier of the second site.
  • establishing a communication connection between the first station and the second station based on the channel identifier in step 230 may include: the first station is based on the channel identifier and the identifier of the second station, and The second site establishes a communication connection.
  • the first station that receives the communication notification message can know whether it is a party to the communication according to the identifier in the communication notification message, and can establish a communication connection with the other station according to the identifier of the other station.
  • the communication notification message carrying the identifier of the first site and the identifier of the second site may help quickly establish a communication connection between the first site and the second site.
  • a communication request is issued by a first site, and the communication request carries the identifier of the first site and the identifier of the second site.
  • the target site may A station and the second station send a communication notification message carrying a channel identifier.
  • the first station and / or the second station can establish a communication connection between the two based on the channel identifier and directly communicate. In this way, bypassing the star communication mode, data can be directly transmitted between the first station and the second station via satellite without passing through the target station, thereby improving communication efficiency and shortening the communication time.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message also carries communication time indication information.
  • the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the communication cut-off time can specify that both communication parties end the communication when a cut-off time arrives, regardless of whether the data transmission of the two is completed. For example, both sides of the communication start communication at 11 o'clock, and after ten minutes, the communication ends at 11:10 (cut-off time).
  • the communication duration can specify that both parties of the communication end the communication of the two when a communication duration arrives, regardless of whether the data transmission of the two is completed. For example, both parties of the communication start communication at 11 o'clock, and the communication ends at 11:10 after ten minutes (communication time).
  • the embodiment of the present invention can prevent the communication station from occupying the channel for too long by carrying the communication time indication information in the communication notification message, and realize reasonable and efficient utilization of channel resources. It should be understood that, when the communication notification message does not carry the communication time indication information, the communication can be ended when both parties of the communication complete the communication.
  • the satellite communication method provided by the embodiment of the present invention may further include : When the data transfer between the first station and the second station is completed or the communication time condition indicated by the communication time indication information is satisfied, the first station disconnects the communication with the second station Connect and send a communication end message to the target site. In this way, the target station can reclaim the channel resources according to the end of communication message for future use.
  • the satellite communication method may further include: the first station measuring the signal-to-noise of the received data frame Ratio; the first station filters the measured signal-to-noise ratio to obtain a signal-to-noise ratio filter value; the first station sends the signal-to-noise ratio filter value to the second station so that The second station selects a data frame modulation and coding method based on the signal-to-noise ratio filter value.
  • the first station may measure the signal-to-noise ratio of the received data frame every other period (for example, 1 second).
  • the filtering process can be performed every other cycle (for example, 5 seconds).
  • the first station calculates the signal-to-noise ratio filter value and sends it to the second station, so that the second station can determine the data frame modulation coding method according to the signal-to-noise ratio filter value, thereby ensuring more efficient data transmission .
  • the satellite communication method provided in this embodiment of the present invention may further include: the first station receives the SNR filter value; the first station determines / selects the data frame modulation and coding method based on the SNR filter value; the first station sends the determined / selected data frame modulation and coding method to the second station, The second station modulates and sends subsequent data frames based on the determined data frame modulation and coding method.
  • the data frame modulation and coding method can be determined / selected based on the principle of maximizing air interface efficiency.
  • the embodiment of the present invention selects the data frame modulation and coding mode based on the signal-to-noise ratio filter value, so that the air interface link transmission efficiency can be more effectively improved in the communication process.
  • FIG. 3 is a flowchart of a satellite communication method provided by an embodiment of the present invention.
  • the satellite communication method provided by an embodiment of the present invention may include: step 310, a second station receives a communication notification message from a target station, the communication notification message carries a channel identifier; step 320, the second station is based on The channel identification establishes a communication connection with the first site; wherein, the second site and the target site communicate via satellite, and the first site and the second site communicate via satellite.
  • the channel identifier may be an SCPC channel identifier
  • the communication connection may be an SCPC communication connection.
  • the second station receives the communication notification message carrying the channel identifier from the target station. After receiving the communication notification message, the second station can establish a communication connection with the first station based on the channel identifier and directly communicate. In this way, bypassing the star communication mode, data can be directly transmitted between the first station and the second station via satellite without passing through the target station, thereby improving communication efficiency and shortening the communication time. In addition, this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message may further carry the identifier of the first site and the identifier of the second site.
  • the second station establishing a communication connection with the first station based on the channel identifier may include: the second station is based on the channel identifier and the identifier of the first station, and The first site establishes a communication connection.
  • the second station receiving the communication notification message can know whether it is a party to the communication according to the identifier in the communication notification message, and can establish a communication connection with the other station according to the identifier of the other station.
  • the communication notification message carrying the identifier of the first site and the identifier of the second site may help quickly establish a communication connection between the first site and the second site.
  • the communication notification message also carries communication time indication information.
  • the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the communication cut-off time can specify that both communication parties end the communication when a cut-off time arrives, regardless of whether the data transmission of the two is completed. For example, both sides of the communication start communication at 11 o'clock, and after ten minutes, the communication ends at 11:10 (cut-off time).
  • the communication duration can specify that both parties of the communication end the communication of the two when a communication duration arrives, regardless of whether the data transmission of the two is completed. For example, both parties of the communication start communication at 11 o'clock, and the communication ends at 11:10 after ten minutes (communication time).
  • the embodiment of the present invention can prevent the communication station from occupying the channel for too long by carrying the communication time indication information in the communication notification message, and realize reasonable and efficient utilization of channel resources. It should be understood that, when the communication notification message does not carry the communication time indication information, the communication can be ended when both parties of the communication complete the communication.
  • the satellite communication method provided by the embodiment of the present invention may further include : When the data transfer between the first station and the second station is completed or the communication time condition indicated by the communication time indication information is satisfied, the second station disconnects the communication with the first station Connect and send a communication end message to the target site. In this way, the target station can reclaim the channel resources according to the end of communication message for future use.
  • the satellite communication method may further include: the second station measuring the signal-to-noise of the received data frame Ratio; the second station filters the measured signal-to-noise ratio value to obtain a signal-to-noise ratio filter value; the second station sends the signal-to-noise ratio filter value to the first station so that The first station determines a data frame modulation and coding method based on the signal-to-noise ratio filter value.
  • the second station may measure the signal-to-noise ratio of the received data frame every other period (for example, 1 second).
  • the filtering process can be performed every other cycle (for example, 5 seconds).
  • the second station calculates the signal-to-noise ratio filter value and sends it to the first station, so that the first station can determine the data frame modulation and coding method according to the signal-to-noise ratio filter value, thereby ensuring more efficient data transmission .
  • the satellite communication method provided by the embodiment of the present invention may further include: the second station receives the SNR filter value; the second station determines a data frame modulation and coding method based on the SNR filter value; the second station sends the determined data frame modulation and coding method to the first station, so that the first A station modulates and sends subsequent data frames based on the determined data frame modulation and coding method.
  • the data frame modulation and coding method can be determined / selected based on the principle of maximizing air interface efficiency.
  • the embodiment of the present invention selects the data frame modulation and coding mode based on the signal-to-noise ratio filter value, so that the air interface link transmission efficiency can be more effectively improved in the communication process.
  • the satellite communication method provided by the embodiment of the present invention may include: Step 410, a first station establishes a satellite communication link with a target station.
  • a universal satellite communication link can be established between the first site and the target site according to the star communication mode.
  • DVB (Digital Video Broadcasting) -S2 protocol can be used for the downlink
  • RCS2 protocol can be used for the uplink, using common satellite communication frequency points and bandwidth as the bearer to complete the target site and the first site Interaction between upstream and downstream information.
  • Step 420 when the first station needs to perform SCPC communication with the second station (another end station), the first station initiates an SCPC communication request to the target station through the established satellite link.
  • the SCPC communication request may include: the number of the first site, the number of the second site (the opposite end station), and the SCPC communication duration value.
  • step 430 after receiving the SCPC communication request from the first site, the target site determines whether a communication establishment condition is satisfied between the first site and the second site.
  • the first station may check according to the number of the first station and the number of the second station, SCPC communication function is configured at these stations, and there is currently an idle SCPC dedicated channel, and the second station has also communicated with the target station
  • the target station determines that the communication establishment conditions are satisfied between the first station and the second station.
  • Step 440 When the communication establishment condition is satisfied between the first station and the second station, the target station sends an SCPC communication notification message to the first station and the second station.
  • the content of the SCPC communication notification message may include: the number of the first station, the number of the second station (the opposite end station), the number of the SCPC communication dedicated channel used, and the cut-off time of the SCPC communication dedicated channel communication.
  • the target station may not send an SCPC communication notification message to the first station and the second station, and the process ends.
  • Step 450 the first station and the second station receive a communication notification message from the target station, and establish a communication connection between the two based on the communication notification message.
  • the first station and the second station may start to establish a communication connection and perform SCPC communication according to the SCPC communication scheme and according to the SCPC communication dedicated channel allocated by the target station.
  • Step 460 During communication, the first station periodically measures the signal-to-noise ratio of the received data frame, and filters the measured signal-to-noise ratio to obtain the signal-to-noise ratio filter value. And use the SCPC dedicated communication channel to send the SNR filter value to the second station.
  • Step 470 the second station receives the signal-to-noise ratio filter value from the first station, and after receiving the signal-to-noise ratio filter value of the first station, determines the data frame modulation and coding based on the signal-to-noise ratio filter value Mode, and send the determined data frame modulation and coding mode to the first station.
  • the second station may select the highest air interface efficiency downlink frame modulation code corresponding to the signal-to-noise ratio according to the principle of maximizing the air interface efficiency of the DVB-S2 protocol Scheme, and send the downlink frame modulation and coding scheme to the first station through the SCPC dedicated communication channel.
  • Step 480 The first station receives the data frame modulation and coding method sent by the second station, and modulates and sends subsequent data frames based on the determined data frame modulation and coding method.
  • steps 460-480 can be performed periodically.
  • Step 490 when the first station and the second station performing SCPC communication complete the corresponding data transmission, or according to the SCPC dedicated communication channel cut-off time in the SCPC communication notification message in step 440, the first station and the second station The second station shuts down the transmission of the SCPC dedicated communication channel, and sends a communication end message to the target station.
  • the first station and the second station can be switched to the universal satellite communication link in the star mode for conventional satellite communication.
  • step 460 and step 480 may be exchanged for execution. That is, step 460 and step 480 may also be performed by the second site, while step 470 is performed by the first site.
  • a communication request is issued by a first station, and the communication request carries the identifier of the first station and the identifier of the second station.
  • a station and the second station send a communication notification message carrying a channel identifier.
  • the first station and / or the second station can establish a communication connection between the two based on the channel identifier and directly communicate.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the satellite communication method provided by the embodiment of the present invention can be applied to a scenario where a large amount of information interaction between two sites is required in a short period of time.
  • site users who configure the short-term SCPC function need to exchange a large amount of information, they can send SCPC communication requests through the satellite communication network.
  • the target site can be responsible for verifying the legitimacy of SCPC services, configure SCPC dedicated channels, and can pass The channel identification is returned to the station through a communication notification message, so that a communication connection can be established between the stations.
  • a small amount of signal-to-noise ratio of the air interface link can be exchanged between stations to select a more efficient modulation and coding scheme to improve communication efficiency.
  • FIG. 5 is a structural block diagram of a satellite site provided by an embodiment of the present invention.
  • a satellite site 500 provided by an embodiment of the present invention may include a receiving module 510 and a sending module 520.
  • the receiving module 510 is used to receive the communication request from the first site, the communication request carries the identifier of the first site and the identifier of the second site;
  • the sending module 520 is used to send the first site and The second station sends a communication notification message, and the communication notification message carries a channel identifier, so that the first station and the second station establish a communication connection between the two based on the channel identifier; wherein, the satellite The station and the first station communicate via satellite, and the satellite station and the second station communicate via satellite.
  • the satellite station may send a communication notification message carrying a channel identifier to the first station and the second station.
  • the first station and / or the second station can establish a communication connection between the two based on the channel identifier and directly communicate. In this way, bypassing the star communication mode, data can be directly transmitted between the first station and the second station via satellite without passing through the satellite station, thereby improving communication efficiency and shortening the communication time.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message further carries the identifier of the first site and the identifier of the second site.
  • the communication request is an SCPC communication request
  • the channel identifier is an SCPC channel identifier
  • the communication connection is an SCPC communication connection.
  • the communication notification message further carries communication time indication information, and the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the satellite site further includes a processing module, the processing module is configured to: send a communication notification message to the first site and the second site at the sending module Before, it is determined whether the communication establishment condition is satisfied between the first station and the second station; the sending module 520 is specifically configured to: when the communication establishment condition is satisfied between the first station and the second station , Sending a communication notification message to the first site and the second site.
  • the processing module when determining whether a communication establishment condition is satisfied between the first station and the second station, is specifically configured to: based on the Identification, determine whether the first site is configured with SCPC communication function, and based on the identification of the second site, determine whether the second site is configured with SCPC communication function; determine whether the second site has been established with the target site A second satellite communication link; determining whether there is an idle SCPC channel; the SCPC communication function is configured on both the first site and the second site, the second site has established a satellite communication link with the satellite site and When there is an idle SCPC channel, determine whether the communication establishment condition is satisfied between the first station and the second station; optionally, in an embodiment of the present invention, the channel identifier carried in the communication notification message It is the identifier of one SCPC channel in the idle SCPC channel.
  • the receiving module 510 is further configured to: receive The communication end message of the first site and / or the second site.
  • the satellite station before the target station receives the communication request from the first station, the satellite station further includes a communication connection establishment module, the communication connection establishment module is used to: The first station establishes a first satellite communication link.
  • the receiving module is specifically configured to receive a communication request transmitted from the first site through the first satellite communication link.
  • a satellite site 600 provided by an embodiment of the present invention may include a receiving module 610, a sending module 620, and a communication connection establishment module 630.
  • the sending module 620 is used to send a communication request to the target site, and the communication request carries the identifier of the satellite site and the identifier of the second site;
  • the receiving module 610 is used to receive a communication notification message from the target site , The communication notification message carries a channel identifier;
  • a communication connection establishment module 630 is configured to establish a communication connection with the second station based on the channel identifier received by the receiving module 610; wherein, the satellite station and the The target site communicates via satellite, and the satellite site and the second site communicate via satellite.
  • a communication request is sent by a satellite station, and the communication request carries the identifier of the self and the identifier of the second station.
  • the target station can send a request to the satellite station and the station The second station sends a communication notification message carrying a channel identifier.
  • the satellite station and / or the second station can establish a communication connection between the two based on the channel identifier and directly communicate. In this way, bypassing the star communication mode, the satellite station and the second station can directly transmit data via satellite without passing through the target station, thus improving communication efficiency and shortening the communication time.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message further carries the identifier of the first site and the identifier of the second site.
  • the communication connection establishment module 630 is specifically configured to establish a communication connection with the second station based on the channel identifier and the identifier of the second station.
  • the communication request is an SCPC communication request
  • the channel identifier is an SCPC channel identifier
  • the communication connection is an SCPC communication connection.
  • the communication notification message further carries communication time indication information, and the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the satellite station further includes a processing module, the processing module is used to : Measure the signal-to-noise ratio of the received data frame; filter the measured signal-to-noise ratio to obtain the signal-to-noise ratio filter value.
  • the sending module 620 is further configured to: send the SNR filter value to the second station, so that the second station determines the data frame modulation and coding method based on the SNR filter value.
  • the receiving module 610 is further configured to: the first station receives a message from the second station Noise ratio filter value.
  • the satellite site further includes a processing module, the processing module is configured to determine a data frame modulation and coding method based on the signal-to-noise ratio filter value.
  • the sending module 620 is further configured to send the modulated data frame modulation and coding method to the second station, so that the second station modulates the subsequent data frame based on the modulated data frame modulation and coding method And send.
  • the satellite site further includes a communication connection disconnection module, and the communication connection disconnection module is used to : When the data transmission between the satellite station and the second station is completed or the communication time condition indicated by the communication time indication information is satisfied, the communication connection with the second station is disconnected.
  • the sending module is further configured to send a communication end message to the target site.
  • a satellite site 700 provided by an embodiment of the present invention may include a receiving module 710 and a communication connection establishing module 730.
  • the receiving module 710 is used to receive a communication notification message from the target site, the communication notification message carries a channel identifier
  • the communication connection establishment module 730 is used to receive the channel identifier and the first The site establishes a communication connection; wherein, the satellite site and the target site communicate via satellite, and the satellite site and the first site communicate via satellite.
  • the satellite station receives the communication notification message from the target station, which carries the channel identification. After receiving the communication notification message, the satellite station can establish a communication connection with the first station based on the channel identifier and directly communicate. In this way, bypassing the star communication mode, data can be directly transmitted between the first station and the satellite station via the satellite without passing through the target station, thus improving communication efficiency and shortening the communication time. In addition, this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the communication notification message also carries the identifier of the first site and the identifier of the second site;
  • the communication connection establishment module 730 is specifically configured to: The channel identifier and the identifier of the first station establish a communication connection with the first station; optionally, in an embodiment of the present invention, the channel identifier is an SCPC channel identifier and the communication connection is SCPC Communication connection.
  • the communication notification message further carries communication time indication information, and the communication time indication information includes at least one of a communication cut-off time and a communication duration.
  • the satellite station after the satellite station establishes a communication connection with the first station, the satellite station further includes a processing module, the processing module is configured to: measure the received The signal-to-noise ratio of the data frame; filter the measured signal-to-noise ratio to obtain the signal-to-noise ratio filter value.
  • the satellite station further includes a sending module for sending the signal-to-noise ratio filter value to the first station, so that the first station determines data based on the signal-to-noise ratio filter value Frame modulation coding method.
  • the receiving module 710 is further configured to: receive a signal-to-noise ratio filter value from the first station.
  • the satellite site further includes a processing module, the processing module is configured to determine a data frame modulation and coding method based on the signal-to-noise ratio filter value.
  • the sending module is further configured to: send the determined data frame modulation and coding mode to the first station, so that the first station modulates and sends subsequent data frames based on the modulated data frame modulation and coding mode .
  • the satellite site further includes a communication connection disconnection module, which is used to communicate with the first site When the data transfer between the second stations is completed or the communication time condition indicated by the communication time indication information is satisfied, the communication connection with the first station is disconnected.
  • the sending module is further configured to send a communication end message to the target site.
  • an embodiment of the present invention further provides a satellite station.
  • the satellite station provided by the embodiment of the present invention may include a memory and a processor, and a computer program may be stored on the memory, which may be implemented when the computer program is executed by the processor.
  • an embodiment of the present invention may also provide a non-transitory computer-readable storage medium that stores a computer program, and when the computer program is executed, implements any of the satellite communication methods described above A step of.
  • the satellite site and the non-transitory computer-readable storage medium provided in the embodiments of the present application bypass the star communication mode, and data can be directly transmitted between the sites through the satellite without passing through the target site, thereby improving communication efficiency. Shorten the communication time.
  • this satellite communication method does not need to analyze the message but allocates a dedicated channel based on the communication request, thus reducing resource consumption.
  • the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that enables the generation of instructions executed by the processor of the computer or other programmable data processing device
  • These computer program instructions may also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.
  • the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.
  • processors CPUs
  • input / output interfaces output interfaces
  • network interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory, random access memory (RAM) and / or non-volatile memory in computer-readable media, such as read only memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
  • RAM random access memory
  • ROM read only memory
  • flash RAM flash memory
  • Computer-readable media including permanent and non-permanent, removable and non-removable media, can store information by any method or technology.
  • the information may be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
  • computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.

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Abstract

本申请提供了一种卫星通信方法和卫星站点，涉及通信领域，以解决采用星型通信方式会存在通信效率不高以及通讯时间过长的问题。所述方法包括：目标站点接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；所述目标站点向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；其中，所述目标站点和所述第一站点通过卫星通信，所述目标站点和所述第二站点通过卫星通信。本申请用于卫星通信。

Description

卫星通信方法和卫星站点
交叉引用
本发明要求在2018年11月12日提交中国专利局、申请号为201811338723.7、发明名称为“卫星通信方法和卫星站点”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本申请涉及通信领域，尤其涉及一种卫星通信方法和卫星站点。
背景技术
近年来卫星宽带移动通讯发展迅速，尤其在北美地区，卫星通讯系统的性价比已经可媲美陆地蜂窝通讯系统。
卫星通讯系统通常配置为星型通信方式。星型通信方式便于集中控制资源和提高空口资源利用率，但是在一些场景下，例如在只涉及两个卫星端站之间的数据传输的场景下，采用星型通信方式会存在通信效率不高以及通讯时间过长的问题。
发明内容
本申请实施例提供一种卫星通信方法和卫星站点，以解决采用星型通信方式会存在通信效率不高以及通讯时间过长的问题。
第一方面，提供一种卫星通信方法，包括：目标站点接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；所述目标站点向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；其中，所述目标站点和所述第一站点通过卫星通信，所述目标站点和所述第二站点通过卫星通信。
第二方面，提供一种卫星通信方法，包括：第一站点向目标站点发送通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；所述第一站点接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；所述第一站点基于所述信道标识与所述第二站点建立通信连接；其中，所述第一站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
第三方面，提供一种卫星通信方法，包括：第二站点接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；所述第二站点基于所述信道标识与所述第一站点建立通信连接；其中，所述第二站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
第四方面，提供一种卫星站点，包括：接收模块和发送模块，其中：所述接收模块，用于接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；所述发送模块，用于向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；其中，所述卫星站点和所述第一站点通过卫星通信，所述卫星站点和所述第二站点通过卫星 通信。
第五方面，提供一种卫星站点，包括：发送模块、接收模块和通信连接建立模块，其中：所述发送模块，用于向目标站点发送通信请求，所述通信请求中携带所述卫星站点的标识和第二站点的标识；所述接收模块，用于接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；所述通信连接建立模块，用于基于所述接收模块接收的所述信道标识与所述第二站点建立通信连接；其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第二站点通过卫星通信。
第六方面，提供一种卫星站点，包括接收模块和通信连接建立模块，其中：接收模块，用于接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；通信连接建立模块，用于基于所述接收模块接收的所述信道标识与所述第一站点建立通信连接；其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第一站点通过卫星通信。
第七方面，提供一种非临时性计算机可读存储介质，所述存储介质上存储计算机程序，当所述计算机程序被执行时实现以下操作：接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接。
第八方面，提供一种非临时性计算机可读存储介质，所述存储介质上存储计算机程序，当所述计算机程序被执行时实现以下操作：向目标站点发送通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；基于所述信道标识与所述第二站点建立通信连接。
第九方面，提供一种非临时性计算机可读存储介质，所述存储介质上存储计算机程序，当所述计算机程序被执行时实现以下操作：接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；基于所述信道标识与所述第一站点建立通信连接。
附图说明
图1-1是星型通信模式下数据传输方式的示意图；
图1-2是两个站点之间直接通信时的数据传输方式的示意图；
图1-3是本发明实施例提供的一种卫星通信方法的流程图；
图2是本发明实施例提供的一种卫星通信方法的流程图；
图3是本发明实施例提供的一种卫星通信方法的流程图；
图4是本发明实施例提供的一种基于SCPC的示例卫星通信方法的流程图；
图5是本发明实施例提供的一种卫星站点的结构框图；
图6是本发明实施例提供的一种卫星站点的结构框图；
图7是本发明实施例提供的一种卫星站点的结构框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本发明实施例提供的卫星通信方法可涉及目标站点、第一站点和第二站点。其中，目标站点、第一站点和第二站点均为卫星站点。目标站点可以为主站，即可以为卫星通信链路上陆地上固定的大站，用作卫星通信地面通信的枢纽。第一站点和第二站点可以为端站，即可以为卫星通信链路上陆地、海洋、空中的固定或非固定的小站，是卫星通信的端点。
在星型通信方式中，若第一站点需要与第二站点进行通信，则来自第一站点的数据需要先传输至目标站点(主站)，进而由目标站点(主站)传输至第二站点，可参见图1-1。在本发明实施例中，一旦在第一站点和第二站点之间建立通信连接，在第一站点需要与第二站点进行数据传输时来自第一站点的数据可以无需传输至目标站点(主站)，而是可经由卫星直接传输至第二站点，可参见图1-2。
下面结合附图对本发明实施例提供的卫星通信方法进行进一步阐释。
图1-3是本发明实施例提供的一种卫星通信方法的流程图。参照图1本发明实施例提供的卫星通信方法可包括：步骤110，目标站点接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识。
在本发明实施例中，目标站点可以为在通信过程中主要发挥控制作用的卫星站点。第一站点的标识可以为第一站点的编号、为第一站点分配的IP地址、第一站点的MAC(介质访问控制，Media Access Control)地址等等。第二站点的标识可以为第二站点的编号、为第二站点分配的IP地址、第二站点的MAC地址等等。
在步骤110中所述目标站点接收来自第一站点的通信请求之前，所述目标站点可以先与所述第一站点建立第一卫星通信链路。相应地，步骤110中所述目标站点接收来自第一站点的通信请求可包括：所述目标站点接收来自所述第一站点的、通过所述第一卫星通信链路传输的通信请求。
步骤120，所述目标站点向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接。
其中，所述目标站点和所述第一站点通过卫星通信，所述目标站点和所述第二站点通过卫星通信。
其中，步骤110和步骤120可以通过图1-1所示卫星链路来完成。第一站点和第二站点之间建立通信连接之后，即可基于图1-2所示链路来完成二者之间数据的传输。
在本发明实施例中，所述通信请求可以为单路单载波(Single Channel Per Carrier，SCPC)通信请求，所述信道标识可以为SCPC信道标识，所述通信连 接可以为SCPC通信连接。
其中，所述通信通知消息中携带的信道标识可以为空闲的SCPC信道中的一个SCPC信道的标识。
在本发明实施例中，所述信道标识可以为专用信道的标识。目标站点可以预先建立信道标识与站点之间的对应关系，并提前告知各个站点。这样，各个站点在接收到携带信道标识的通信通知消息之后，即可根据信道标识确定出需要进行通信的站点，进而在站点之间建立通信连接。举例而言，在空闲的专用信道充足的情况下，可以配置信道标识a对应于站点1和站点2，信道标识b对应于站点3和站点4，信道标识c对应于站点5和站点6，并将这些对应信息发往各个站点。这样，站点3后续在接收到携带信道标识a的通信通知消息后，可知晓自身并不是通信的一方，而在接收到携带信道标识b的通信通知消息后，可知晓自身为通信的一方，并可与通信的另一方(即站点4)建立通信连接。
在本申请实施例中，目标站点在接收到来自第一站点的通信请求之后，即可向所述第一站点和所述第二站点发送携带信道标识的通信通知消息。第一站点和/或第二站点在接收到此通信通知消息之后，即可基于所述信道标识在二者间建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
可选地，在本发明的一个实施例中，所述通信通知消息中还可携带所述第一站点的标识和所述第二站点的标识。这样一来，接收到通信通知消息的各个站点即可根据通信通知消息中标识获知自身是否为通信的一方，并可根据另一站点的标识与其建立通信连接。通信通知消息中携带所述第一站点的标识和所述第二站点的标识可以有助于第一站点和第二站点之间快速建立通信连接。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息。所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。通信截止时间可以指定通信双方在一个截止时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟之后，11点10分(截止时间)结束通信。通信时长可以指定通信双方在一个通信持续时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟(通信时长)之后即11点10分结束通信。本发明实施例通过通信通知消息中携带通信时间指示信息可以避免通信站点占用信道过长时间，实现对信道资源的合理和高效利用。需了解的是，在通信通知消息中不携带通信时间指示信息的情况下，在通信双方完成通信时即可结束通信。
可选地，在本发明的一个实施例中，在步骤120中所述目标站点向所述第一站点和所述第二站点发送通信通知消息之前，本发明实施例提供的卫星通信方法还可包括：所述目标站点确定所述第一站点与所述第二站点之间是否满足通信建立条件；所述目标站点向所述第一站点和所述第二站点发送通信通知消 息包括：在所述第一站点与所述第二站点之间满足通信建立条件时，所述目标站点向所述第一站点和所述第二站点发送通信通知消息。如此一来，可以保证目标站点只有在第一站点和第二站点满足通信建立条件时才发送通信通知消息，避免因发送无效的通信通知消息而浪费信道资源。
在本发明实施例中，通信建立条件可以根据需求来设置。在一个实施例中，所述目标站点确定所述第一站点与所述第二站点之间是否满足通信建立条件可包括：所述目标站点基于所述第一站点的标识，确定所述第一站点是否配置SCPC通信功能，并基于所述第二站点的标识，确定所述第二站点是否配置SCPC通信功能；所述目标站点确定所述第二站点是否已经与所述目标站点建立第二卫星通信链路；所述目标站点确定是否存在空闲的SCPC信道；在所述目标站点确定所述第一站点和所述第二站点均配置SCPC通信功能、所述第二站点已经与所述目标站点建立卫星通信链路且存在空闲的SCPC信道时，确定所述第一站点与所述第二站点之间满足通信建立条件。上述通信条件的选定可以保证第一站点和第二站点可以建立有效的通信连接。当然，在本发明实施例中，还可以在上述通信条件的基础上额外增加一或多种限定条件，以使得建立的通信连接更好地满足需求。
在本发明的一个实施例中，在步骤120中所述目标站点向所述第一站点和所述第二站点发送通信通知消息之后，本发明实施例提供的卫星通信方法还可包括：所述目标站点接收来自所述第一站点和/或所述第二站点的通信结束消息。如此，目标站点可以根据通信结束消息更好地管理信道资源，例如将第一站点和第二站点之间的信道资源用于后续站点间通信。
图2是本发明实施例提供的一种卫星通信方法的流程图。参照图2，本发明实施例提供的卫星通信方法可包括：步骤210，第一站点向目标站点发送通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识。
在本发明实施例中，在步骤210之前，第一站点和第二站点可预先进行交互，以获取彼此的标识。在需要进行直接通信时，第一站点可向目标站点发送包含自身标识和需要进行通信的站点(即第二站点)的标识的通信请求。
步骤220，所述第一站点接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识。
步骤230，所述第一站点基于所述信道标识与所述第二站点建立通信连接。
其中，所述第一站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
在本发明实施例中，所述信道标识可以为专用信道的标识。第一站点可以预先从目标站点获取信道标识与站点之间的对应关系。这样，第一站点在接收到携带信道标识的通信通知消息之后，即可根据信道标识确定出需要进行通信的站点，进而在站点之间建立通信连接。举例而言，在空闲的专用信道充足的情况下，信道标识与站点之间的对应关系可如下：信道标识a对应于站点1和站点2，信道标识b对应于站点3和站点4，信道标识c对应于站点5和站点6。各个站点可以从目标站点获取信道标识与站点之间的上述对应关系。这样，站 点3后续在接收到携带信道标识a的通信通知消息后，可知晓自身并不是通信的一方，而在接收到携带信道标识b的通信通知消息后，可知晓自身为通信的一方，并可与通信的另一方(即站点4)建立通信连接。
其中，作为一种典型的应用场景，所述通信请求可以为SCPC通信请求，所述信道标识可以为SCPC信道标识，所述通信连接可以为SCPC通信连接。
在本发明实施例中，所述通信通知消息中还可携带所述第一站点的标识和所述第二站点的标识。相应地，步骤230中所述第一站点基于所述信道标识与所述第二站点建立通信连接可包括：所述第一站点基于所述信道标识和所述第二站点的标识，与所述第二站点建立通信连接。这样一来，接收到通信通知消息的第一站点即可根据通信通知消息中标识获知自身是否为通信的一方，并可根据另一站点的标识与其建立通信连接。通信通知消息中携带所述第一站点的标识和所述第二站点的标识可以有助于第一站点和第二站点之间快速建立通信连接。
在本申请实施例中，由第一站点发出通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识，目标站点在接收到通信请求之后，即可向所述第一站点和所述第二站点发送携带信道标识的通信通知消息。第一站点和/或第二站点在接收到此通信通知消息之后，即可基于所述信道标识在二者间建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息。所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。通信截止时间可以指定通信双方在一个截止时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟之后，11点10分(截止时间)结束通信。通信时长可以指定通信双方在一个通信持续时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟(通信时长)之后即11点10分结束通信。本发明实施例通过通信通知消息中携带通信时间指示信息可以避免通信站点占用信道过长时间，实现对信道资源的合理和高效利用。需了解的是，在通信通知消息中不携带通信时间指示信息的情况下，在通信双方完成通信时即可结束通信。
可选地，在本发明的一个实施例中，在步骤230中所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，本发明实施例提供的卫星通信方法还可包括：在所述第一站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，所述第一站点断开与所述第二站点的通信连接，并向所述目标站点发送通信结束消息。如此，目标站点可以根据通信结束消息回收信道资源，以备于后续使用。
在第一站点与第二站点建立通信连接之后，即可在二者之间进行数据传输。在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，本发明 实施例提供的卫星通信方法还可包括：所述第一站点测量所接收到的数据帧的信噪比值；所述第一站点对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值；所述第一站点向所述第二站点发送所述信噪比滤波值，使得所述第二站点基于所述信噪比滤波值选择数据帧调制编码方式。
其中，第一站点可以每隔一个周期(例如1秒)测量所接收到的数据帧的信噪比值。滤波处理可以每隔另一个周期(例如5秒)进行一次。
本发明实施例中，第一站点通过计算信噪比滤波值并发往第二站点，可以让第二站点根据所述信噪比滤波值确定数据帧调制编码方式，从而可以保证数据传输更加高效。
可选地，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，本发明实施例提供的卫星通信方法还可包括：所述第一站点接收来自第二站点的信噪比滤波值；所述第一站点基于所述信噪比滤波值确定/选取数据帧调制编码方式；所述第一站点向所述第二站点发送确定/选取的数据帧调制编码方式，使得所述第二站点基于确定的数据帧调制编码方式对后续的数据帧进行调制和发送。
其中，可以基于空口效率最大化原则来确定/选取数据帧调制编码方式。
本发明实施例基于信噪比滤波值来选取数据帧调制编码方式，如此可以在通信过程中更加有效提升空口链路传输效率。
图3是本发明实施例提供的一种卫星通信方法的流程图。参照图3，本发明实施例提供的卫星通信方法可包括：步骤310，第二站点接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；步骤320，所述第二站点基于所述信道标识与第一站点建立通信连接；其中，所述第二站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
其中，所述信道标识可以为SCPC信道标识，所述通信连接可以为SCPC通信连接。
在本申请实施例中，第二站点接收来自目标站点的、携带信道标识的通信通知消息。第二站点在接收到此通信通知消息之后，即可基于所述信道标识与第一站点建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
在本发明实施例中，所述通信通知消息中还可携带所述第一站点的标识和所述第二站点的标识。相应地，步骤320中所述第二站点基于所述信道标识与所述第一站点建立通信连接可包括：所述第二站点基于所述信道标识和所述第一站点的标识，与所述第一站点建立通信连接。这样一来，接收到通信通知消息的第二站点即可根据通信通知消息中标识获知自身是否为通信的一方，并可根据另一站点的标识与其建立通信连接。通信通知消息中携带所述第一站点的标识和所述第二站点的标识可以有助于第一站点和第二站点之间快速建立通信连接。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息。所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。通信截止时间可以指定通信双方在一个截止时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟之后，11点10分(截止时间)结束通信。通信时长可以指定通信双方在一个通信持续时间到达时，结束二者通信而不论二者数据传输有无完成。例如通信双方在11点开始通信，十分钟(通信时长)之后即11点10分结束通信。本发明实施例通过通信通知消息中携带通信时间指示信息可以避免通信站点占用信道过长时间，实现对信道资源的合理和高效利用。需了解的是，在通信通知消息中不携带通信时间指示信息的情况下，在通信双方完成通信时即可结束通信。
可选地，在本发明的一个实施例中，在步骤320中所述第二站点基于所述信道标识与所述第一站点建立通信连接之后，本发明实施例提供的卫星通信方法还可包括：在所述第一站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，所述第二站点断开与所述第一站点的通信连接，并向所述目标站点发送通信结束消息。如此，目标站点可以根据通信结束消息回收信道资源，以备于后续使用。
在第一站点与第二站点建立通信连接之后，即可在二者之间进行数据传输。在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，本发明实施例提供的卫星通信方法还可包括：所述第二站点测量所接收到的数据帧的信噪比值；所述第二站点对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值；所述第二站点向所述第一站点发送所述信噪比滤波值，使得所述第一站点基于所述信噪比滤波值确定数据帧调制编码方式。
其中，第二站点可以每隔一个周期(例如1秒)测量所接收到的数据帧的信噪比值。滤波处理可以每隔另一个周期(例如5秒)进行一次。
本发明实施例中，第二站点通过计算信噪比滤波值并发往第一站点，可以让第一站点根据所述信噪比滤波值确定数据帧调制编码方式，从而可以保证数据传输更加高效。
可选地，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，本发明实施例提供的卫星通信方法还可包括：所述第二站点接收来自第一站点的信噪比滤波值；所述第二站点基于所述信噪比滤波值确定数据帧调制编码方式；所述第二站点向所述第一站点发送确定的数据帧调制编码方式，使得所述第一站点基于确定的数据帧调制编码方式对后续的数据帧进行调制和发送。
其中，可以基于空口效率最大化原则来确定/选取数据帧调制编码方式。
本发明实施例基于信噪比滤波值来选取数据帧调制编码方式，如此可以在通信过程中更加有效提升空口链路传输效率。
图4是本发明实施例提供的一种基于SCPC的示例卫星通信方法的流程图。参照图4，本发明实施例提供的的卫星通信方法可包括：步骤410，第一站点与目标站点建立卫星通信链路。
举例而言，可按照星型通信模式，在第一站点与目标站点间建立通用的卫星通信链路。在该条链路上，下行可采用DVB(数字视频广播，Digital Video Broadcasting)-S2协议，上行可采用RCS2协议，使用通用的卫星通信频点和带宽做承载，可完成目标站点和第一站点之间的上、下行信息交互。
步骤420，第一站点在需要与第二站点(另外一个端站)进行SCPC通信时，由第一站点通过已建立的卫星链路向目标站点发起SCPC通信请求。
其中，SCPC通信请求中可包括：第一站点的编号、第二站点(对方端站)的编号、SCPC通信持续时间值。
步骤430，目标站点在接收到第一站点的SCPC通信请求后，确定所述第一站点与所述第二站点之间是否满足通信建立条件。
具体地，第一站点可根据第一站点的编号、第二站点的编号进行核查，在这些站点都配置SCPC通信功能，且目前有空闲的SCPC专有信道，且第二站点也已经与目标站点建立了星型通信模式下的通用卫星通信链路的情况下，目标站点确定第一站点和第二站点之间满足通信建立条件。
步骤440，在所述第一站点与所述第二站点之间满足通信建立条件时，目标站点向第一站点和第二站点发送SCPC通信通知消息。
其中，该SCPC通信通知消息内容可包括：第一站点的编号、第二站点(对方端站)的编号、所使用的SCPC通信专用信道编号以及该SCPC通信专用信道通信的截止时间。
在所述第一站点与所述第二站点之间不满足通信建立条件时，目标站点可不向第一站点和第二站点发送SCPC通信通知消息，流程结束。
步骤450，第一站点和第二站点接收来自所述目标站点的通信通知消息，并基于所述通信通知消息在二者间建立通信连接。
具体地，第一站点和第二站点在接收到SCPC通信通知消息后，可开始按照业SCPC通信方案，按照目标站点分配的SCPC通信专用信道，建立通信连接并进行SCPC通信。
步骤460，在进行通信的过程中，第一站点周期性地测量所接收到的数据帧的信噪比值，并对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值，并利用SCPC专用通信信道向所述第二站点发送所述信噪比滤波值。
步骤470，第二站点接收来自第一站点的所述信噪比滤波值，并在接收到第一站点的所述信噪比滤波值之后，基于所述信噪比滤波值确定数据帧调制编码方式，并向第一站点发送确定的所述数据帧调制编码方式。
具体地，第二站点接收到第一站点发来的下行帧信噪比滤波值后，可按照DVB-S2协议空口效率最大化原则，选择该信噪比对应的最高空口效率的下行帧调制编码方案，并将该下行帧调制编码方案通过SCPC专用通信信道发给第一站点。
步骤480，第一站点接收第二站点发送的所述数据帧调制编码方式，并基于确定的数据帧调制编码方式对后续的数据帧进行调制和发送。
这里需指出的是，步骤460-480可以周期性地执行。
步骤490，进行SCPC通信的第一站点和第二站点在完成了相应的数据传送时，或者按照步骤440中的SCPC通信通知消息中的SCPC专用通信信道截止时间已到达后，第一站点和第二站点关断SCPC专用通信信道的传输，并向所述目标站点发送通信结束消息。
同时，第一站点和第二站点可切换到星型模式下的通用卫星通信链路进行常规卫星通信。
需了解的是，在上述步骤460-480中第一站点和第二站点可以互换位置来执行。即，步骤460和步骤480也可以由第二站点来执行，同时步骤470由第一站点来执行。
在本申请实施例中，由第一站点发出通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识，目标站点在接收到通信请求之后，即可向所述第一站点和所述第二站点发送携带信道标识的通信通知消息。第一站点和/或第二站点在接收到此通信通知消息之后，即可基于所述信道标识在二者间建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
本发明实施例提供的卫星通信方法可适用于二个站点之间短期需要进行大量信息交互的场景。当配置短期SCPC功能的站点用户需要进行大量信息交互时，可通过星型卫星通信网络发出SCPC通信请求，目标站点可负责验证SCPC业务的合法性、配置SCPC专用信道，并在验证通过时可将信道标识通过通信通知消息返回给站点，以便于站点间建立通信连接。此外，站点之间可交互少量空口链路信噪比以便选用效率更高的调制编码方案，提高通信效率。由上可见，采用本发明实施例提供的卫星通信方法，可快速建立SCPC通信专用通道，同时在SCPC通讯过程中选用合理调制编码方案可更加有效利用空口链路。
图5是本发明实施例提供的一种卫星站点的结构框图。参照图5，本发明实施例提供的一种卫星站点500可包括接收模块510和发送模块520。其中：接收模块510，用于接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；发送模块520，用于向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；其中，所述卫星站点和所述第一站点通过卫星通信，所述卫星站点和所述第二站点通过卫星通信。
在本申请实施例中，卫星站点在接收到来自第一站点的通信请求之后，即可向所述第一站点和所述第二站点发送携带信道标识的通信通知消息。第一站点和/或第二站点在接收到此通信通知消息之后，即可基于所述信道标识在二者间建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由卫星站点，因而可以 提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识。
可选地，在本发明的一个实施例中，所述通信请求为SCPC通信请求，所述信道标识为SCPC信道标识，所述通信连接为SCPC通信连接。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
可选地，在本发明的一个实施例中，所述卫星站点还包括处理模块，所述处理模块用于：在所述发送模块向所述第一站点和所述第二站点发送通信通知消息之前，确定所述第一站点与所述第二站点之间是否满足通信建立条件；所述发送模块520具体用于：在所述第一站点与所述第二站点之间满足通信建立条件时，向所述第一站点和所述第二站点发送通信通知消息。
可选地，在本发明的一个实施例中，在确定所述第一站点与所述第二站点之间是否满足通信建立条件时，所述处理模块具体用于：基于所述第一站点的标识，确定所述第一站点是否配置SCPC通信功能，并基于所述第二站点的标识，确定所述第二站点是否配置SCPC通信功能；确定所述第二站点是否已经与所述目标站点建立第二卫星通信链路；确定是否存在空闲的SCPC信道；在所述第一站点和所述第二站点均配置SCPC通信功能、所述第二站点已经与所述卫星站点建立卫星通信链路且存在空闲的SCPC信道时，确定所述第一站点与所述第二站点之间是否满足通信建立条件；可选地，在本发明的一个实施例中，所述通信通知消息中携带的信道标识为所述空闲的SCPC信道中的一个SCPC信道的标识。
可选地，在本发明的一个实施例中，在所述发送模块520向所述第一站点和所述第二站点发送通信通知消息之后，所述接收模块510还用于：接收来自所述第一站点和/或所述第二站点的通信结束消息。
可选地，在本发明的一个实施例中，在所述目标站点接收来自第一站点的通信请求之前，所述卫星站点还包括通信连接建立模块，所述通信连接建立模块用于：与所述第一站点建立第一卫星通信链路。相应地，所述接收模块具体用于：接收来自所述第一站点的、通过所述第一卫星通信链路传输的通信请求。
图6是本发明实施例提供的一种卫星站点的结构框图。参照图6，本发明实施例提供的一种卫星站点600可包括接收模块610、发送模块620和通信连接建立模块630。其中：发送模块620，用于向目标站点发送通信请求，所述通信请求中携带所述卫星站点的标识和第二站点的标识；接收模块610，用于接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；通信连接建立模块630，用于基于所述接收模块610接收的所述信道标识与所述第二站点建立通信连接；其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第二站点通过卫星通信。
在本申请实施例中，由卫星站点发出通信请求，所述通信请求中携带所述 自身的标识和第二站点的标识，目标站点在接收到通信请求之后，即可向所述卫星站点和所述第二站点发送携带信道标识的通信通知消息。卫星站点和/或第二站点在接收到此通信通知消息之后，即可基于所述信道标识在二者间建立通信连接并直接进行通信。如此，绕开了星型通信方式，卫星站点和第二站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识。相应地，所述通信连接建立模块630具体用于：基于所述信道标识和所述第二站点的标识，与所述第二站点建立通信连接。
可选地，在本发明的一个实施例中，所述通信请求为SCPC通信请求，所述信道标识为SCPC信道标识，所述通信连接为SCPC通信连接。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
可选地，在本发明的一个实施例中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述卫星站点还包括处理模块，所述处理模块用于：测量所接收到的数据帧的信噪比值；对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值。相应地，所述发送模块620还用于：向所述第二站点发送所述信噪比滤波值，使得所述第二站点基于所述信噪比滤波值确定数据帧调制编码方式。
可选地，在本发明的一个实施例中，在所述卫星站点与所述第二站点建立通信连接之后，所述接收模块610还用于：所述第一站点接收来自第二站点的信噪比滤波值。所述卫星站点还包括处理模块，所述处理模块用于：基于所述信噪比滤波值确定数据帧调制编码方式。相应地，所述发送模块620还用于：向所述第二站点发送调制后的数据帧调制编码方式，使得所述第二站点基于调制后的数据帧调制编码方式对后续的数据帧进行调制和发送。
可选地，在本发明的一个实施例中，在所述卫星站点与所述第二站点建立通信连接之后，所述卫星站点还包括通信连接断开模块，所述通信连接断开模块用于：在所述卫星站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，断开与所述第二站点的通信连接。相应地，所述发送模块还用于：向所述目标站点发送通信结束消息。
图7是本发明实施例提供的一种卫星站点的结构框图。参照图7，本发明实施例提供的一种卫星站点700可包括接收模块710和通信连接建立模块730。其中：接收模块710，用于接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；通信连接建立模块730，用于基于所述接收模块710接收的所述信道标识与第一站点建立通信连接；其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第一站点通过卫星通信。
在本申请实施例中，卫星站点接收来自目标站点的、携带信道标识的通信 通知消息。卫星站点在接收到此通信通知消息之后，即可基于所述信道标识与第一站点建立通信连接并直接进行通信。如此，绕开了星型通信方式，第一站点和卫星站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识；所述通信连接建立模块730具体用于：基于所述信道标识和所述第一站点的标识，与所述第一站点建立通信连接；可选地，在本发明的一个实施例中，所述信道标识为SCPC信道标识，所述通信连接为SCPC通信连接。
可选地，在本发明的一个实施例中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
可选地，在本发明的一个实施例中，在所述卫星站点与所述第一站点建立通信连接之后，所述卫星站点还包括处理模块，所述处理模块用于：测量所接收到的数据帧的信噪比值；对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值。相应地，所述卫星站点还包括发送模块，所述发送模块用于：向所述第一站点发送所述信噪比滤波值，使得所述第一站点基于所述信噪比滤波值确定数据帧调制编码方式。
可选地，在本发明的一个实施例中，在所述卫星站点与所述第一站点建立通信连接之后，所述接收模块710还用于：接收来自第一站点的信噪比滤波值。所述卫星站点还包括处理模块，所述处理模块用于：基于所述信噪比滤波值确定数据帧调制编码方式。相应地，所述发送模块还用于：向所述第一站点发送确定的数据帧调制编码方式，使得所述第一站点基于调制后的数据帧调制编码方式对后续的数据帧进行调制和发送。
可选地，在本发明的一个实施例中，在所述卫星站点与所述第二站点建立通信连接之后，所述卫星站点还包括通信连接断开模块，用于在所述第一站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，断开与所述第一站点的通信连接。相应地，所述发送模块还用于：向所述目标站点发送通信结束消息。
此外本发明实施例还提供一种卫星站点，本发明实施例提供的卫星站点可包括存储器和处理器，所述存储器上可存储计算机程序，当所述计算机程序被所述处理器执行时可实现上文所描述的任一种卫星通信方法中的步骤。例如，图1-3所示卫星通信方法的步骤、图2所示卫星通信方法的步骤或者图3所示卫星通信方法的步骤。
此外，本发明实施例还可提供一种非临时性计算机可读存储介质，所述存储介质上存储计算机程序，当所述计算机程序被执行时实现上文所描述的任一种卫星通信方法中的步骤。例如，图1-3所示卫星通信方法的步骤、图2所示卫星通信方法的步骤或者图3所示卫星通信方法的步骤。
本申请实施例提供的卫星站点和非临时性计算机可读存储介质，绕开了星 型通信方式，站点之间可经由卫星直接进行数据传输，而无需再经由目标站点，因而可以提高通信效率，缩短通信时长。此外，此种卫星通信方式无需对报文进行解析而是基于通信请求来分配专用信道，因而可以降低资源损耗。
本领域内的技术人员应明白，本发明的实施例可提供为方法、装置、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
内存可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。内存是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排 他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
本领域技术人员应明白，本申请的实施例可提供为方法、系统或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
上述对本说明书特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。

Claims (22)

  1. 一种卫星通信方法，其中，包括：
    目标站点接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；
    所述目标站点向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；
    其中，所述目标站点和所述第一站点通过卫星通信，所述目标站点和所述第二站点通过卫星通信。
  2. 根据权利要求1所述的卫星通信方法，其中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识；所述通信请求为单路单载波SCPC通信请求，所述信道标识为SCPC信道标识，所述通信连接为SCPC通信连接。
  3. 根据权利要求1或2所述的卫星通信方法，其中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
  4. 根据权利要求2所述的卫星通信方法，其中，在所述目标站点向所述第一站点和所述第二站点发送通信通知消息之前，所述卫星通信方法还包括：
    所述目标站点确定所述第一站点与所述第二站点之间是否满足通信建立条件；
    所述目标站点向所述第一站点和所述第二站点发送通信通知消息包括：在所述第一站点与所述第二站点之间满足通信建立条件时，所述目标站点向所述第一站点和所述第二站点发送通信通知消息。
  5. 根据权利要求4所述的卫星通信方法，其中，所述目标站点确定所述第一站点与所述第二站点之间是否满足通信建立条件包括：
    所述目标站点基于所述第一站点的标识，确定所述第一站点是否配置SCPC通信功能，并基于所述第二站点的标识，确定所述第二站点是否配置SCPC通信功能；
    所述目标站点确定所述第二站点是否已经与所述目标站点建立第二卫星通信链路；
    所述目标站点确定是否存在空闲的SCPC信道；
    在所述目标站点确定所述第一站点和所述第二站点均配置SCPC通信功能、所述第二站点已经与所述目标站点建立卫星通信链路且存在空闲的SCPC信道时，确定所述第一站点与所述第二站点之间满足通信建立条件；
    其中，所述通信通知消息中携带的信道标识为所述空闲的SCPC信道中的一个SCPC信道的标识。
  6. 根据权利要求1所述的卫星通信方法，其中，在所述目标站点向所述第一站点和所述第二站点发送通信通知消息之后，所述卫星通信方法还包括：
    所述目标站点接收来自所述第一站点和/或所述第二站点的通信结束消息。
  7. 根据权利要求1所述的卫星通信方法，其中，在所述目标站点接收来自第一站点的通信请求之前，所述方法还包括：
    所述目标站点与所述第一站点建立第一卫星通信链路；
    所述目标站点接收来自第一站点的通信请求包括：所述目标站点接收来自所述第一站点的、通过所述第一卫星通信链路传输的通信请求。
  8. 一种卫星通信方法，其中，包括：
    第一站点向目标站点发送通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；
    所述第一站点接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；
    所述第一站点基于所述信道标识与所述第二站点建立通信连接；
    其中，所述第一站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
  9. 根据权利要求8所述的卫星通信方法，其中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识；
    所述第一站点基于所述信道标识与所述第二站点建立通信连接包括：所述第一站点基于所述信道标识和所述第二站点的标识，与所述第二站点建立通信连接；
    其中，所述通信请求为单路单载波SCPC通信请求，所述信道标识为SCPC信道标识，所述通信连接为SCPC通信连接。
  10. 根据权利要求8或9所述的卫星通信方法，其中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
  11. 根据权利要求8或9所述的卫星通信方法，其中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述卫星通信方法还包括：
    所述第一站点测量所接收到的数据帧的信噪比值；
    所述第一站点对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值；
    所述第一站点向所述第二站点发送所述信噪比滤波值，使得所述第二站点基于所述信噪比滤波值确定数据帧调制编码方式。
  12. 根据权利要求8或9所述的卫星通信方法，其中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述卫星通信方法还包括：
    所述第一站点接收来自第二站点的信噪比滤波值；
    所述第一站点基于所述信噪比滤波值确定数据帧调制编码方式；
    所述第一站点向所述第二站点发送确定的数据帧调制编码方式，使得所述第二站点基于确定的数据帧调制编码方式对后续的数据帧进行调制和发送。
  13. 根据权利要求10所述的卫星通信方法，其中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述方法还包括：
    在所述第一站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，所述第一站点断开与所述第二站点的通信连接，并向所述目标站点发送通信结束消息。
  14. 一种卫星通信方法，其中，包括：
    第二站点接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；
    所述第二站点基于所述信道标识与第一站点建立通信连接；
    其中，所述第二站点和所述目标站点通过卫星通信，所述第一站点和所述第二站点通过卫星通信。
  15. 根据权利要求14所述的卫星通信方法，其中，所述通信通知消息中还携带所述第一站点的标识和所述第二站点的标识；
    所述第二站点基于所述信道标识与所述第一站点建立通信连接包括：所述第二站点基于所述信道标识和所述第一站点的标识，与所述第一站点建立通信连接；
    其中，所述信道标识为单路单载波SCPC信道标识，所述通信连接为SCPC通信连接。
  16. 根据权利要求14或15所述的卫星通信方法，其中，所述通信通知消息中还携带通信时间指示信息，所述通信时间指示信息包括通信截止时间、通信时长中的至少一种。
  17. 根据权利要求15所述的卫星通信方法，其中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述卫星通信方法还包括：
    所述第二站点测量所接收到的数据帧的信噪比值；
    所述第二站点对测量得到的信噪比值进行滤波处理，以得到信噪比滤波值；
    所述第二站点向所述第一站点发送所述信噪比滤波值，使得所述第一站点基于所述信噪比滤波值确定数据帧调制编码方式。
  18. 根据权利要求15所述的卫星通信方法，其中，在所述第二站点基于所述信道标识与所述第一站点建立通信连接之后，所述卫星通信方法还包括：
    所述第二站点接收来自第一站点的信噪比滤波值；
    所述第二站点基于所述信噪比滤波值确定数据帧调制编码方式；
    所述第二站点向所述第一站点发送确定的数据帧调制编码方式，使得所述第一站点基于确定的数据帧调制编码方式对后续的数据帧进行调制和发送。
  19. 根据权利要求16所述的卫星通信方法，其中，在所述第一站点基于所述信道标识与所述第二站点建立通信连接之后，所述方法还包括：
    在所述第一站点与所述第二站点之间的数据传送完成或者满足所述通信时间指示信息所指示的通信时间条件时，所述第二站点断开与所述第一站点的通信连接，并向所述目标站点发送通信结束消息。
  20. 一种卫星站点，其中，包括：
    接收模块，用于接收来自第一站点的通信请求，所述通信请求中携带所述第一站点的标识和第二站点的标识；
    发送模块，用于向所述第一站点和所述第二站点发送通信通知消息，所述通信通知消息中携带信道标识，使得所述第一站点和所述第二站点基于所述信道标识在二者间建立通信连接；
    其中，所述卫星站点和所述第一站点通过卫星通信，所述卫星站点和所述第二站点通过卫星通信。
  21. 一种卫星站点，其中，包括：
    发送模块，用于向目标站点发送通信请求，所述通信请求中携带所述卫星站点的标识和第二站点的标识；
    接收模块，用于接收来自所述目标站点的通信通知消息，所述通信通知消息中携带信道标识；
    通信连接建立模块，用于基于所述接收模块接收的所述信道标识与所述第二站点建立通信连接；
    其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第二站点通过卫星通信。
  22. 一种卫星站点，其中，包括：
    接收模块，用于接收来自目标站点的通信通知消息，所述通信通知消息中携带信道标识；
    通信连接建立模块，用于基于所述接收模块接收的所述信道标识与所述第一站点建立通信连接；
    其中，所述卫星站点和所述目标站点通过卫星通信，所述卫星站点和所述第一站点通过卫星通信。
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