CN115720213A - Air-ground communication flow control method and device and airborne equipment - Google Patents
Air-ground communication flow control method and device and airborne equipment Download PDFInfo
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Abstract
The invention discloses a flow control method, a flow control device and airborne equipment for air-ground communication, wherein the method comprises the following steps: acquiring a ground communication message; the ground communication message comprises priority information; according to the priority information, the ground communication messages are cached to the corresponding application layer priority queues; according to the priority information corresponding to each application layer priority queue, sending the ground communication message in the application layer priority queue to the airborne end route forwarding equipment; according to the method and the device, the ground communication messages are cached to the corresponding application layer priority queues according to the priority information, and the service flow of the airborne equipment is cached by using the application layer priority queues, so that the service flow of the airborne equipment can be transmitted according to the divided priorities, the important ground communication messages can be transmitted preferentially, the condition that the important ground communication messages are discarded under the condition that a transmission link is congested is reduced, and the communication effect of the air-ground communication is improved.
Description
Technical Field
The invention relates to the technical field of air-ground communication, in particular to a flow control method and device for air-ground communication and airborne equipment.
Background
At present, a civil aircraft is based on an Internet Protocol (IP) Protocol, and a quality of service (QoS) Transmission guarantee algorithm in an air-ground communication process is established on a TCP/IP Protocol layered structure, and Protocol layers are independent of each other and adopt different QoS performance indexes, so that state changes of a network environment and other layers cannot be timely and efficiently coped with, and the overall design of requirements on airborne service QoS is lacked.
In the prior art, in the traditional air-ground communication process, an application layer does not sense the congestion state of a network layer link, each airborne application independently seizes air-ground wireless link resources in a mode of sending according to needs, once the link is congested, a large number of IP messages are discarded by an airborne terminal machine, network resources inside an airplane are wasted, and for services transmitted by adopting a TCP protocol, even in an extreme case, link congestion is relieved, but a TCP slow start mechanism is triggered due to the fact that a large number of messages are discarded, and the situation that message transmission cannot be carried out on the TCP connection is caused.
Therefore, how to reduce the situation of discarding the important ground communication message transmitted by the onboard device in the air-ground communication process and improve the communication effect of the air-ground communication is a problem which needs to be solved urgently nowadays.
Disclosure of Invention
The invention aims to provide a flow control method and device for air-ground communication and airborne equipment, so as to reduce the situation that important ground-to-ground communication messages transmitted by the airborne equipment are discarded in the air-ground communication process and improve the communication effect of the air-ground communication.
In order to solve the above technical problem, the present invention provides a flow control method for air-to-ground communication, including:
acquiring a ground communication message; the ground communication message comprises priority information;
according to the priority information, caching the ground communication message to the corresponding application layer priority queue;
according to the priority information corresponding to each application layer priority queue, the ground communication messages in the application layer priority queues are sent to airborne end routing forwarding equipment, so that the ground communication messages are forwarded to ground end equipment through the airborne end routing forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
Optionally, the caching the ground communication packet in the application layer priority queue corresponding to each ground communication packet according to the priority information includes:
according to the current priority information, caching the current local communication message to a target application layer priority queue; the current priority information is the priority information in the current local communication message, the current local communication message is any local communication message, and the target application layer priority queue is any application layer priority queue corresponding to the current priority information.
Optionally, the ground communication packet is specifically an IP protocol packet, and the priority information is a ToS value and/or a DSCP value in the IP protocol packet.
Optionally, the sending the ground communication packet in the application layer priority queue to an airborne end routing forwarding device according to the priority information corresponding to each application layer priority queue includes:
determining a scheduling weight value corresponding to each application layer priority queue according to the priority information;
and sending the ground communication message in the application layer priority queue to the airborne end route forwarding equipment according to the scheduling weight value.
Optionally, the determining, according to the priority information, a scheduling weight value corresponding to each of the application layer priority queues includes:
and determining a scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters.
Optionally, the determining, according to the priority information and the air-to-ground communication parameter, a scheduling weight value corresponding to each of the application layer priority queues includes:
sending a communication capability negotiation request to a network layer flow control module, and receiving a communication capability negotiation response returned by the network layer flow control module;
and calculating a scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-to-ground communication parameters in the communication capability negotiation response.
Optionally, the method further includes:
and when the link state of the air-ground communication transmission link is a congestion state, adjusting the scheduling weight value corresponding to each application layer priority queue.
Optionally, the method further includes:
and adjusting the scheduling weight value corresponding to each application layer priority queue according to the utilization rate corresponding to each application layer priority queue.
The invention also provides a flow control device for air-ground communication, which comprises:
the message acquisition unit is used for acquiring a ground communication message; the ground communication message comprises priority information;
the queue caching unit is used for caching the ground communication message into respective corresponding application layer priority queues according to the priority information;
the message sending unit is used for sending the ground communication messages in the application layer priority queues to airborne end route forwarding equipment according to the priority information corresponding to each application layer priority queue, so that the ground communication messages are forwarded to ground end equipment through the airborne end route forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
In addition, the present invention also provides an airborne apparatus, comprising:
a memory for storing a computer program;
and a processor, configured to implement the steps of the air-ground communication flow control method as described above when executing the computer program.
The invention provides a flow control method for air-ground communication, which comprises the following steps: acquiring a ground communication message; the ground communication message comprises priority information; according to the priority information, the ground communication messages are cached to the corresponding application layer priority queues; according to the priority information corresponding to each application layer priority queue, the ground communication messages in the application layer priority queues are sent to airborne end route forwarding equipment, so that the ground communication messages are forwarded to ground end equipment through the airborne end route forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth;
therefore, according to the method and the device, the ground communication messages are cached to the corresponding application layer priority queues according to the priority information, and the service flow of the airborne equipment is cached by using the application layer priority queues, so that the service flow of the airborne equipment can be transmitted according to the divided priorities, the important ground communication messages can be transmitted preferentially, the condition that the important ground communication messages are discarded is reduced, and the communication effect of the air-ground communication is improved. In addition, the invention also provides an air-ground communication flow control device and airborne equipment, and the air-ground communication flow control device and the airborne equipment also have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a flow control method for air-to-ground communication according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of another air-ground communication flow control method according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a priority processing logic of another method for controlling flow rate of air-to-ground communication according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a weight adjustment logic of another method for controlling flow rate of air-to-ground communication according to an embodiment of the present invention;
fig. 5 is a schematic diagram of weight renegotiation logic of another flow control method for air-to-ground communication according to an embodiment of the present invention;
fig. 6 is a block diagram illustrating a flow control device for air-ground communication according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an onboard device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an onboard device provided in this embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a flow control method for air-ground communication according to an embodiment of the present invention. The method can comprise the following steps:
step 101: acquiring a ground communication message; wherein the ground communication message includes priority information.
It can be understood that the ground communication message in this step may be a message (i.e., a traffic flow) that an onboard device in the aircraft needs to send to a ground device on the ground, such as a message based on a standard IP protocol (i.e., an IP protocol message). Each of the ground-to-ground communication messages in this step may include priority information corresponding to the importance degree of the ground-to-ground communication message, so as to implement prioritization of airborne service flows.
Correspondingly, the specific content of the ground communication message in the step can be set by a designer according to a use scene and user requirements, for example, the ground communication message can be realized in the same or similar mode as the air-ground communication message in the prior art, and corresponding priority information is added to the ground communication message. For example, the ground communication packet may specifically be an IP protocol packet; the priority information in the ground communication message may be a priority identifier (i.e., toS value and/or DSCP value) carried in a ToS field and/or a DSCP field of a standard IP packet header of the ground communication message.
Similarly, the specific type and content of the priority information in the local communication packet are not limited in this embodiment, for example, in this embodiment, the priorities of the local communication packet may be divided into 8 classes, that is, the application layer priority queues are divided into 8 classes, which correspond to different ToS values or DSCP values, respectively, as shown in table 1, the priority of the 1 st class (i.e., the priority corresponding to the empty coordination messages) may be the highest priority, and the priorities of the messages corresponding to the priorities of the 1 st class to the 8 th class are sequentially reduced.
TABLE 1 correspondence between application layer priority queues and ToS/DSCP
Specifically, the specific manner in which the processor of the airborne device acquires the ground-to-ground communication message in this step may be set by a designer according to a practical scenario and a user requirement, and if the method may be implemented in a manner the same as or similar to the method for acquiring a communication message in air-to-ground communication by an application of the airborne device (that is, an airborne application) in the prior art, only corresponding priority information is added to the communication message, which is not limited in this embodiment.
Step 102: and caching the ground communication messages to the corresponding application layer priority queues according to the priority information.
The application layer priority Queue in this step may be a Queue for caching the ground-to-ground communication packet, such as each application layer priority Queue (APP _1_ Queue-APP _ n _ Queue) created in the application layer in fig. 2. In the step, the ground communication messages are cached in the application layer priority queues corresponding to the respective priority information, so that the airborne equipment can send the ground communication messages cached in the application layer priority queues according to the priority information of each pair of ground communication messages, and the condition that the important ground communication messages with higher priority are discarded when a transmission link of the air-ground communication is congested is reduced.
Specifically, the specific manner in which the airborne equipment caches the ground communication messages to the respective corresponding application layer priority queues according to the priority information in this step can be set by a designer according to a practical scene and user requirements, and if each type of priority information can correspond to a plurality of application layer priority queues, that is, when each ground communication message respectively corresponds to one application layer priority queue, the airborne equipment can cache the current ground communication message to the target application layer priority queue according to the current priority information; the current priority information is the priority information in the current ground communication message, the current ground communication message is any ground communication message, and the target application layer priority queue is any application layer priority queue corresponding to the current priority information. As shown in fig. 2, the application layer flow control module in the on-board device may distribute the respective pair of ground communication packets (APP _ 1-APP _ n) to the application layer priority Queue (APP _1 _queue-APP _ n _ Queue) corresponding to each pair of ground communication packets for caching through the distribution service. Each type of priority information can also correspond to an application layer priority queue, that is, the ground communication messages with the same priority information can be cached in the same application layer priority queue. The present embodiment does not set any limit to this.
Step 103: according to the priority information corresponding to each application layer priority queue, the ground communication messages in the application layer priority queues are sent to airborne end routing forwarding equipment, so that the ground communication messages are forwarded to ground end equipment through the airborne end routing forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
It can be understood that, in this step, the airborne device sends the ground communication packet in the application layer priority queue to the airborne end route forwarding device according to the priority information corresponding to each application layer priority queue, so that the ground communication packet is forwarded to the ground end device through the airborne end route forwarding device, and the ground communication packet with higher priority is more likely to be sent to the ground end device, that is, the transmission bandwidth of the ground communication packet in the application layer priority queue with higher priority is preferentially ensured to meet the minimum guaranteed bandwidth, so that the transmission bandwidth of the ground communication packet in the application layer priority queue with higher priority certainly meets the minimum guaranteed bandwidth corresponding to the application layer priority queue with lower priority when the transmission bandwidth of the ground communication packet in the application layer priority queue with lower priority meets the minimum guaranteed bandwidth corresponding to the application layer priority queue with higher priority; correspondingly, when the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority cannot meet the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority cannot meet the corresponding minimum guaranteed bandwidth.
Specifically, as for the specific manner in which the airborne equipment sends the ground communication message in the application layer priority queue to the airborne end routing forwarding equipment according to the priority information corresponding to each application layer priority queue in this step, the specific manner can be set by a designer according to a practical scene and user requirements, for example, the airborne equipment can determine the scheduling weight value corresponding to each application layer priority queue according to the priority information corresponding to each application layer priority queue; according to the scheduling weight value, sending the ground communication message in the application layer priority queue to the airborne end route forwarding equipment; that is to say, the airborne device may send the ground communication packet in the application layer priority queue according to the transmission bandwidth corresponding to the scheduling weight value by determining the scheduling weight value of the transmission data corresponding to each application layer priority queue, so that the transmission bandwidth allocated to the scheduling weight value corresponding to the ground communication packet with a higher priority better satisfies the minimum guaranteed bandwidth of the ground communication packet.
Correspondingly, the specific manner of determining the respective corresponding scheduling weight value of each application layer priority queue by the airborne equipment according to the respective corresponding priority information of each application layer priority queue can be set by a designer, for example, the airborne equipment can directly utilize the respective corresponding priority information of all application layer priority queues to determine the respective corresponding scheduling weight value of each application layer priority queue; for example, the total transmission bandwidth is divided into the application layer priority queues according to the priority information of all the application layer priority queues. The airborne equipment can also determine a scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters; for example, the airborne device may determine a scheduling weight value corresponding to each application layer priority queue according to an air-to-ground communication parameter (such as a current transmission bandwidth), a minimum guaranteed bandwidth corresponding to each of all application layer priority queues, and priority information, so that the scheduling weight value of each application layer priority queue may correspond to a current actual communication capability.
Specifically, when the airborne equipment determines the scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters, the airborne equipment may send a communication capability negotiation request to the network layer flow control module by using the application layer flow control module, and receive a communication capability negotiation response returned by the network layer flow control module; and calculating the scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters in the communication capability negotiation response. As shown in fig. 3, when an application of the on-board device (i.e., an on-board application) has an air-ground communication demand, it initiates an air-ground data transmission request to the application layer flow control module; the application layer flow control module can initiate a communication capability negotiation request to the network layer flow control module according to the priority level of the application layer flow control module and wait for a response, and after receiving the communication capability negotiation response, the application layer flow control module distributes the scheduling weight (namely a scheduling weight value) of the application layer priority queue of the application layer flow control module for the service flow (namely the ground communication message) of the priority level according to the carried air-ground communication parameters; correspondingly, the airborne application forwards the service flow (i.e., the ground communication packet) to the application layer flow control module, and the application layer flow control module may utilize the scheduler to take out the message from each application layer priority queue according to the scheduling weight for forwarding, so as to send the message to the airborne end routing forwarding device. That is to say, the airborne equipment may cache the ground communication packet in the respective corresponding application layer priority queues, and then determine the respective scheduling weight values of each application layer priority queue; the scheduling weight value corresponding to each application layer priority queue may also be determined first, and then the ground communication packet is cached in each corresponding application layer priority queue, which is not limited in this embodiment.
Further, in this step, the airborne device may send the ground communication packet in the application layer priority queue to the airborne end route forwarding device according to the priority information corresponding to each application layer priority queue and the link state of the air-ground communication transmission link; for example, the airborne equipment can adjust the scheduling weight value corresponding to each application layer priority queue when the link state of the air-to-ground communication transmission link is a congestion state. As shown in fig. 4, in the normal air-ground data (i.e., ground communication packet) interaction process when the airborne application completes communication capability negotiation, the network layer flow control module may report a "communication capability change indication" to the application layer flow control module when it is monitored that the current air-ground communication transmission link is congested; the application layer flow control module can recalculate the scheduling weight of each application layer priority queue according to the link congestion state information carried in the communication capacity change indication, and take out the message from each application layer priority queue by the updated scheduling weight for forwarding. That is to say, the application layer flow control module may process the "communication capability change indication" message from the network layer flow control module in real time, and update the scheduling weight value of each application layer priority queue in real time according to the link congestion state carried in the message, so as to control the packet rate of each application layer priority queue forwarded to the network layer, thereby controlling the rate of each pair of ground communication packets sent by the network layer to the ground end device.
Furthermore, in this step, the onboard equipment may send the ground communication packet in the application layer priority queue to the onboard end route forwarding equipment according to the respective corresponding utilization rate and priority information of each application layer priority queue; for example, the airborne equipment may adjust the scheduling weight value corresponding to each application layer priority queue according to the utilization rate corresponding to each application layer priority queue. For example, the onboard device may adjust the scheduling weight value corresponding to each application layer priority queue when the utilization rate of any application layer priority queue is greater than a utilization rate threshold; as shown in fig. 5, in the normal air-ground data (i.e., ground communication message) interaction process when the airborne application completes the communication capability negotiation, the application layer flow control module may monitor the utilization rate of each application layer priority queue in real time, and when the utilization rate of a certain application layer priority queue exceeds a set threshold (i.e., a utilization rate threshold), initiate the communication capability renegotiation to the network layer with a "communication capability renegotiation request" to request to allocate a higher bandwidth to the service flow of the priority; the network layer flow control module calculates according to the parameters carried in the communication capacity renegotiation request and returns a communication capacity renegotiation response, and the application layer flow control module receives the response, recalculates the scheduling weight of each application layer priority queue according to the renegotiation result and the parameter information carried in the response, and takes out the message from each application layer priority queue according to the updated scheduling weight for forwarding. That is to say, the application layer flow control module may monitor the utilization rate of each application layer priority queue in real time, and when the utilization rate of a certain application layer priority queue exceeds the utilization rate threshold, initiate communication capability renegotiation to the network layer flow control module with a "communication capability renegotiation" message, and update the scheduling weight of each application layer priority queue according to the returned "communication capability renegotiation response", for example, increase the scheduling weight of the application layer priority queue exceeding the utilization rate threshold or determine the scheduling weight corresponding to each application layer priority queue again according to the priority information and the air-to-ground communication parameters.
Specifically, in this embodiment, a standard communication interface may be used for interaction between an application layer and a network layer in the onboard device to increase adaptability and extensibility of the method provided in this embodiment, for example, a Diameter (an authentication, authorization, and audit protocol used in a computer network) base protocol defined based on an RFC 6733 protocol may be used for control command interaction between the application layer and the network layer, that is, messages transmitted between the application layer flow control module and the network layer flow control module, such as a communication capability negotiation request, a communication capability negotiation response, a communication capability change indication, a communication capability re-negotiation request, and a communication capability re-negotiation response, may be interaction messages defined based on the RFC 6733 protocol extension.
In this embodiment, the ground communication messages are cached in the application layer priority queues corresponding to the ground communication messages according to the priority information, and the service flows of the airborne equipment are cached by using the application layer priority queues, so that the service flows of the airborne equipment can be transmitted according to the divided priorities, the important ground communication messages can be transmitted preferentially, the condition that the important ground communication messages are discarded is reduced, and the communication effect of the air-ground communication is improved.
Corresponding to the above method embodiment, the embodiment of the present invention further provides an air-ground communication flow control device, and the air-ground communication flow control device described below and the air-ground communication flow control method described above may be referred to in correspondence with each other.
Referring to fig. 6, fig. 6 is a block diagram illustrating a flow control device for air-ground communication according to an embodiment of the present invention. The apparatus may include:
a message acquiring unit 10, configured to acquire a ground communication message; the ground communication message comprises priority information;
the queue caching unit 20 is configured to cache the local communication packet to the corresponding application layer priority queue according to the priority information;
the message sending unit 30 is configured to send the ground communication message in the application layer priority queue to the airborne end route forwarding device according to the priority information corresponding to each application layer priority queue, so as to forward the ground communication message to the ground end device through the airborne end route forwarding device; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
Optionally, the queue caching unit 20 may be specifically configured to cache the current local communication packet in the target application layer priority queue according to the current priority information; the current priority information is the priority information in the current ground communication message, the current ground communication message is any ground communication message, and the target application layer priority queue is any application layer priority queue corresponding to the current priority information.
Optionally, the ground communication packet may specifically be an IP protocol packet, and the priority information may be a ToS value and/or a DSCP value in the IP protocol packet.
Optionally, the message sending unit 30 may include:
the weight determining subunit is used for determining a scheduling weight value corresponding to each application layer priority queue according to the priority information;
and the message sending subunit is used for sending the ground communication message in the application layer priority queue to the airborne end routing forwarding equipment according to the scheduling weight value.
Optionally, the weight determining subunit may be specifically configured to determine, according to the priority information and the air-to-ground communication parameter, a scheduling weight value corresponding to each application layer priority queue.
Optionally, the weight determining subunit includes:
the application layer flow control module is used for sending a communication capability negotiation request to the network layer flow control module and receiving a communication capability negotiation response returned by the network layer flow control module; and calculating the scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters in the communication capability negotiation response.
Optionally, the apparatus further comprises:
and the congestion adjusting unit is used for adjusting the scheduling weight value corresponding to each application layer priority queue when the link state of the air-to-ground communication transmission link is a congestion state.
Optionally, the apparatus further comprises:
and the utilization rate adjusting unit is used for adjusting the scheduling weight value corresponding to each application layer priority queue according to the utilization rate corresponding to each application layer priority queue.
In this embodiment, according to the priority information, the queue caching unit 20 caches the ground communication messages into the application layer priority queues corresponding to the ground communication messages, and the application layer priority queues are used for caching the service flows of the airborne equipment, so that the service flows of the airborne equipment can be transmitted according to the divided priorities, and thus the important ground communication messages can be transmitted preferentially, the situation that the important ground communication messages are discarded is reduced, and the communication effect of the air-to-ground communication is improved.
Corresponding to the above method embodiment, an embodiment of the present invention further provides an airborne device, and the airborne device described below and the above air-ground communication flow control method may be referred to in a corresponding manner.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an airborne device according to an embodiment of the present invention. The onboard apparatus may include:
a memory D1 for storing a computer program;
and a processor D2, configured to implement the steps of the flow control method for air-to-ground communication provided in the foregoing method embodiment when executing the computer program.
Specifically, referring to fig. 8, fig. 8 is a schematic structural diagram of an onboard device provided in this embodiment, the onboard device 310 may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 322 (e.g., one or more processors) and a memory 332, and one or more storage media 330 (e.g., one or more mass storage devices) storing an application 342 or data 344. Memory 332 and storage media 330 may be, among other things, transient storage or persistent storage. The program stored on storage medium 330 may include one or more modules (not shown), each of which may include a sequence of instructions operating on an onboard device. Still further, the central processor 322 may be configured to communicate with the storage medium 330 to execute a series of instruction operations in the storage medium 330 on the on-board device 310.
On-board device 310 may also include one or more power sources 326, one or more wired or wireless network interfaces 350, one or more input-output interfaces 358, and/or one or more operating systems 341. Such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, etc.
The steps in the flow control method for air-ground communication described above may be implemented by the structure of an onboard device.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a readable storage medium, and a readable storage medium described below and a flow control method for air-ground communication described above may be referred to correspondingly.
A readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the flow control method for air-ground communication provided by the above method embodiment.
The readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various other readable storage media capable of storing program codes.
The embodiments are described in a progressive mode in the specification, the emphasis of each embodiment is on the difference from the other embodiments, and the same and similar parts among the embodiments can be referred to each other. The device, the onboard equipment and the readable storage medium disclosed by the embodiment correspond to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The above detailed description is provided for the air-ground communication flow control method, the air-ground communication flow control device and the airborne equipment. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A method for controlling flow of air-to-ground communication, comprising:
acquiring a ground communication message; the ground communication message comprises priority information;
according to the priority information, caching the ground communication message to the corresponding application layer priority queue;
according to the priority information corresponding to each application layer priority queue, the ground communication messages in the application layer priority queues are sent to airborne end routing forwarding equipment, so that the ground communication messages are forwarded to ground end equipment through the airborne end routing forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
2. The method according to claim 1, wherein the buffering the ground communication packets to the application layer priority queues corresponding to the priority information comprises:
according to the current priority information, caching the current local communication message to a target application layer priority queue; the current priority information is the priority information in the current local communication message, the current local communication message is any local communication message, and the target application layer priority queue is any application layer priority queue corresponding to the current priority information.
3. The method according to claim 1, wherein the ground communication packet is an IP protocol packet, and the priority information is a ToS value and/or a DSCP value in the IP protocol packet.
4. The air-ground communication flow control method according to any one of claims 1 to 3, wherein the sending the ground communication packet in the application layer priority queue to an airborne end routing forwarding device according to the priority information corresponding to each application layer priority queue includes:
determining a scheduling weight value corresponding to each application layer priority queue according to the priority information;
and sending the ground communication message in the application layer priority queue to the airborne end routing forwarding equipment according to the scheduling weight value.
5. The method according to claim 4, wherein the determining the scheduling weight value corresponding to each of the application layer priority queues according to the priority information comprises:
and determining a scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-ground communication parameters.
6. The method for controlling flow of air-to-ground communication according to claim 5, wherein the determining the scheduling weight value corresponding to each of the application layer priority queues according to the priority information and the air-to-ground communication parameters includes:
sending a communication capability negotiation request to a network layer flow control module, and receiving a communication capability negotiation response returned by the network layer flow control module;
and calculating a scheduling weight value corresponding to each application layer priority queue according to the priority information and the air-to-ground communication parameters in the communication capability negotiation response.
7. The air-ground communication flow control method according to claim 4, further comprising:
and when the link state of the air-ground communication transmission link is a congestion state, adjusting the scheduling weight value corresponding to each application layer priority queue.
8. The air-ground communication flow control method according to claim 4, further comprising:
and adjusting the scheduling weight value corresponding to each application layer priority queue according to the utilization rate corresponding to each application layer priority queue.
9. An air-to-ground communication flow control apparatus, comprising:
the message acquisition unit is used for acquiring a ground communication message; wherein the ground communication message comprises priority information;
the queue caching unit is used for caching the ground communication message into respective corresponding application layer priority queues according to the priority information;
the message sending unit is used for sending the ground communication messages in the application layer priority queues to airborne end route forwarding equipment according to the priority information corresponding to each application layer priority queue, so that the ground communication messages are forwarded to ground end equipment through the airborne end route forwarding equipment; when the transmission bandwidth of the ground communication message in the application layer priority queue with the low priority meets the corresponding minimum guaranteed bandwidth, the transmission bandwidth of the ground communication message in the application layer priority queue with the high priority certainly meets the corresponding minimum guaranteed bandwidth.
10. An airborne apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the flow control method for air-to-ground communication according to any one of claims 1 to 8 when executing the computer program.
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