CN111130625A - Short message processing method and device - Google Patents
Short message processing method and device Download PDFInfo
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- CN111130625A CN111130625A CN201911356612.3A CN201911356612A CN111130625A CN 111130625 A CN111130625 A CN 111130625A CN 201911356612 A CN201911356612 A CN 201911356612A CN 111130625 A CN111130625 A CN 111130625A
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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
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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Abstract
The invention provides a short message processing method and a short message processing device, which are used for acquiring various types of Beidou short messages to be sent; judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment to obtain a judgment result; and if the judgment result shows that the Beidou short messages of all types have sending conflict at the current sending time, generating a combined message according to each Beidou short message with sending conflict, and sending the combined message. According to the invention, the Beidou short messages with sending conflicts are generated into the combined message, and the Beidou short messages with sending conflicts are sent out in a mode of sending the combined message, so that the technical effect of timely sending the Beidou short messages with sending conflicts is achieved, and the technical problem that part of Beidou short messages cannot be sent in time when sending conflicts exist among the Beidou short messages is solved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to the technical field of airborne Beidou communication, and particularly relates to a short message processing method and device.
Background
Currently, there are four more sophisticated global satellite navigation systems in the world: global Positioning System (GPS) in the united states, Global navigation satellite System (GLONASS) in russia, Galileo Satellite Navigation System (GSNS) in the european union, and BeiDou satellite navigation System (BDS) in china. The first three Satellite navigation systems of the four navigation systems adopt a passive positioning function (RNSS), and can only realize one-way communication from a Satellite to a terminal. The Beidou Satellite navigation system also realizes an active positioning short message Service (RDSS) function besides a passive positioning function, and can realize bidirectional communication between terminals and a ground central station.
The Beidou satellite navigation system has the main task of positioning and navigation, and communication channel resources are less, so that the time frequency of the terminal for sending the Beidou short messages is limited, meanwhile, the terminal can only send one Beidou short message at a time at one sending moment, but the sending periods of the Beidou short messages of different types are different, so that when the terminal needs to send a plurality of Beidou short messages at the same sending moment, the sending conflicts of the Beidou short messages can occur, and part of the Beidou short messages cannot be sent in time.
Disclosure of Invention
In view of this, embodiments of the present invention provide a short message processing method and apparatus, so as to solve the technical problem that part of beidou short messages cannot be sent in time due to beidou short message sending collision.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions: a short message processing method comprises the following steps:
acquiring various types of Beidou short messages to be sent;
judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment or not to obtain a judgment result;
if the judgment result shows that the Beidou short messages of all types have sending conflict at the current sending moment, generating a combined message according to each Beidou short message with sending conflict, and sending the combined message;
and if the judgment result shows that no transmission conflict exists between the Beidou short messages of all types at the current transmission moment, determining the Beidou short message transmitted at the current transmission moment from the Beidou short messages of all types, and transmitting the determined Beidou short message.
Further, the determining whether there is a transmission conflict between the Beidou short messages of each type at the current transmission time includes:
acquiring the sending period of each type of Beidou short message, wherein the sending period of each type of Beidou short message is used for indicating the sending time of each type of Beidou short message;
if the current sending time is the sending time of at least two types of Beidou short messages in the various types of Beidou short messages, obtaining a judgment result that the sending conflict exists at the current sending time;
and if the current sending time is the sending time of one type of Beidou short message in the various types of Beidou short messages, obtaining a judgment result that no sending conflict exists at the current sending time.
Further, the generating a combined message according to each beidou short message with a sending conflict includes:
and packaging each Beidou short message with the sending conflict into a combined message.
Further, the encapsulating each beidou short message with sending conflict into one combined message includes:
generating a message identifier of the combined message;
counting the number of each Beidou short message with sending conflict;
cascading the Beidou short messages with the sending conflict to obtain message contents;
and sequentially cascading the message identification, the counted number and the message content of the combined message to generate the combined message.
Another embodiment of the present invention provides another short message processing method, including:
receiving a Beidou short message;
and if the received Beidou short messages are combined messages, resolving each Beidou short message with sending conflict from the combined messages.
Further, the analyzing each beidou short message with sending conflict from the combined message includes:
acquiring the number of each Beidou short message which is packaged into the combined message and has sending conflict and acquiring message content from the combined message;
and according to the number of each Beidou short message with sending conflict, analyzing from the first byte in the message content, after one Beidou short message is analyzed each time, offsetting the message content of the combined message according to the message length of the Beidou short message so as to analyze the next Beidou short message until the number of Beidou short messages is analyzed.
In another aspect, an embodiment of the present invention provides a short message processing apparatus, where the apparatus includes: the message transmitting and receiving module and the message assembling module; wherein
The message receiving and sending module is used for acquiring various types of Beidou short messages to be sent;
the message assembling module comprises a judging unit, an assembling unit and a determining unit;
the judging unit is used for judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment to obtain a judging result;
the assembling unit is used for generating a combined message according to each Beidou short message with sending conflict and sending the combined message to the message receiving and sending module if the judging result shows that the Beidou short messages of each type have sending conflict at the current sending moment, and the message receiving and sending module sends the combined message;
the determining unit is used for determining the Beidou short messages sent at the current sending time from the Beidou short messages of each type and sending the determined Beidou short messages to the message receiving and sending module if the judging result shows that no sending conflict exists between the Beidou short messages of each type at the current sending time, and the message receiving and sending module sends the determined Beidou short messages.
Further, the device also comprises a message configuration module for storing the sending period of each type of Beidou short message, wherein the sending period of each type of Beidou short message is used for indicating the sending time of each type of Beidou short message;
the judgment unit is specifically configured to:
acquiring the sending period of each type of Beidou short message from the message configuration module;
if the current sending time is the sending time of at least two types of Beidou short messages in the various types of Beidou short messages, obtaining a judgment result that the sending conflict exists at the current sending time;
and if the current sending time is the sending time of one type of Beidou short message in the various types of Beidou short messages, obtaining a judgment result that no sending conflict exists at the current sending time.
Further, the assembly unit is specifically configured to:
packaging each Beidou short message with the sending conflict into a combined message, and sending the combined message to the message receiving and sending module;
wherein, encapsulating each Beidou short message with sending conflict into a combined message comprises:
generating a message identifier of the combined message; counting the number of each Beidou short message with sending conflict; cascading the Beidou short messages with the sending conflict to obtain message contents; and sequentially cascading the message identification, the counted number and the message content of the combined message to generate the combined message and sending the combined message to the message transceiving module.
Another embodiment of the present invention provides another short message processing apparatus, including:
the receiving unit is used for receiving the Beidou short message;
the analysis unit is used for analyzing each Beidou short message with sending conflict from the combined message if the received Beidou short message is the combined message;
wherein the analysis of each Beidou short message with sending conflict from the combined message comprises: acquiring the number of each Beidou short message which is packaged into the combined message and has sending conflict and acquiring message content from the combined message; and according to the number of each Beidou short message with sending conflict, analyzing from the first byte in the message content, after one Beidou short message is analyzed each time, offsetting the message content of the combined message according to the message length of the Beidou short message so as to analyze the next Beidou short message until the number of Beidou short messages is analyzed.
Based on the technical scheme, after each type of Beidou short message to be sent is obtained, whether sending conflict exists between each type of Beidou short messages at the current sending moment is judged, and a judgment result is obtained; if the judgment result shows that the Beidou short messages of various types have sending conflict at the current sending moment, generating a combined message according to each Beidou short message with sending conflict, and sending the combined message; if the judgment result shows that no sending conflict exists between the Beidou short messages of various types at the current sending moment, the Beidou short messages sent at the current sending moment are determined from the Beidou short messages of various types, and the determined Beidou short messages are sent, so that for each Beidou short message with sending conflict, each Beidou short message with conflict can be sent together in a mode of sending a combined message, the Beidou short messages with sending conflict can be sent in time in a mode of combining messages, the technical effect of sending each Beidou short message with sending conflict in time is achieved, and the technical problem that part of Beidou short messages cannot be sent in time when sending conflict exists between the Beidou short messages is solved.
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 description of the embodiments or the prior art 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 short message processing method according to an embodiment of the present invention;
fig. 2 is a flowchart of a short message processing method of fig. 1, including a flowchart of an embodiment of step S102;
fig. 3 is a flowchart of an embodiment of generating a combined message in step S103 of the short message processing method in fig. 1;
FIG. 4 is a diagram illustrating a message format of a combined message;
FIG. 5 is a diagram of a message format of an independent message;
fig. 6 is a flowchart of a short message processing method according to another embodiment of the present invention;
fig. 7 is a flowchart of a short message processing method of an airborne short message system according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a message format of the first combined message of FIG. 7;
FIG. 9 is a diagram illustrating another message format of the second combined message of FIG. 7;
fig. 10 is a flowchart of another short message processing method applied to an airborne short message system according to another application embodiment of the present invention;
fig. 11 is a schematic structural diagram of a short message processing apparatus according to another embodiment of the present invention;
fig. 12 is a schematic structural diagram of the message assembly module 702;
fig. 13 is a schematic structural diagram of a short message processing apparatus according to yet another embodiment of the present invention;
fig. 14 is a schematic structural diagram of a short message processing apparatus according to another embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The Beidou short message communication of the Beidou satellite navigation system can provide Beidou short message communication service between terminals and between the terminals and the ground central station. Because the communication frequency of the Beidou short messages is close to the GPS frequency, the Beidou satellite navigation system can classify the Beidou short messages and design the Beidou short messages into different types of Beidou short messages, so that the message length of each Beidou short message is reduced, the sending frequency of the Beidou short messages is controlled, the influence of electromagnetic compatibility is reduced as much as possible, and the interference on the GPS frequency is reduced.
On the other hand, because communication resources of the Beidou satellite navigation system are limited, the terminal sends the Beidou short messages when the Beidou short messages reach the sending time, and the terminal can only send one Beidou short message at each time, but the sending periods of the Beidou short messages of different types are different, so that the situation that the terminal needs to send a plurality of Beidou short messages at the same sending time, and sending conflicts of the Beidou short messages occur.
If part of the Beidou short messages which are sent in conflict are sent in a delayed mode, the following problems can occur: on one hand, part of Beidou short messages cannot be sent in time, so that data is overdue; on the other hand, the Beidou short message transmitted in a delayed manner may also collide with other Beidou short messages at the next transmission time. Based on the two aspects, if the Beidou short messages which are in conflict with each other are sent in a delayed mode, the problem of how to sort the sending priorities of different Beidou short messages and the problem of how to cache part of the Beidou short messages need to be solved.
Therefore, the short message processing method provided by the invention can ensure timely sending of the Beidou short messages in a mode of sending the combined messages by generating the combined messages by the plurality of Beidou short messages which send the conflicts, so that the sending conflicts of the Beidou short messages are solved, and the Beidou short messages which have the sending conflicts are generated into the combined messages by the plurality of Beidou short messages which send the conflicts without sequencing the sending priorities of the Beidou short messages which have the sending conflicts and caching the Beidou short messages which have the sending conflicts. The short message processing method provided by the invention can be applied to Beidou short message receiving and sending equipment which can be positioned in a terminal, and the short message processing method provided by the invention is explained in detail below by combining with the attached drawings.
Referring to fig. 1, a flowchart of a short message processing method according to an embodiment of the present invention is shown, including the following steps:
s101, obtaining each type of Beidou short messages to be sent.
In this step, the type of the to-be-sent beidou short message includes at least one type, and because the beidou short message can be applied to different fields to meet different requirements, the classification mode of the to-be-sent beidou short message may be different in different fields, and different types of beidou short messages may be designed in different fields according to different information to be sent. For example, in domain a, the types of beidou short messages may include: the Beidou short message a1 used for indicating the sending information a1, the Beidou short message a2 used for indicating the sending information a2 and the Beidou short message a3 used for sending the information a 3; in the field B, the types of the beidou short message may include: a Beidou short message b1 for indicating the transmission information b1 and a Beidou short message b2 for indicating the transmission information b 2.
It should be noted that the beidou short messages of different types have different message lengths. The message length of the big dipper short message is generally an integer number of bytes. The message composition formats of the Beidou short messages of different types may also be different. For example, the beidou short message a1, the beidou short message a2 and the beidou short message a3 in the application field a: the message length of the beidou short message a1 is 5, the message length of the beidou short message a2 is 6, and the message length of the beidou short message a3 is 4.
In this step, the obtaining method of the beidou short message may include, but is not limited to, the following several methods: packaging information and/or data to be sent to different types of Beidou short messages to be sent; or obtaining the Beidou short message to be sent from the storage device.
S102, judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment, if so, obtaining a judgment result indicating that the transmission conflicts exist among the Beidou short messages of various types at the current transmission moment, and executing the step S103; if not, a judgment result indicating that no transmission conflict exists between the Beidou short messages of various types at the current transmission moment is obtained, and step S104 is executed.
When there is a transmission conflict, the determination result may be that there is a transmission conflict in at least part of the beidou short messages in each type of beidou short message, and it is not necessarily that there is a transmission conflict between each beidou short message, for example, each type of beidou short message to be transmitted includes: the Beidou short message 1, the Beidou short message 2 and the Beidou short message 3 are transmitted at the current transmission moment, and the Beidou short message 1 and the Beidou short message 2 have transmission conflict; when no sending conflict exists, the judgment result shows that no sending conflict exists among the Beidou short messages of various types, and the Beidou short messages to be sent still comprise the following steps: the Beidou short message 1, the Beidou short message 2 and the Beidou short message 3 are taken as examples, and the fact that no sending conflict exists means that no sending conflict exists between any two Beidou short messages in the Beidou short message 1, the Beidou short message 2 and the Beidou short message 3.
The current sending moment is the sending moment of a certain Beidou short message in each type of Beidou short messages, whether the current moment is the sending moment of a Beidou short message to be sent can be monitored in real time for each type of Beidou short messages to be sent, the current moment is the sending moment of a Beidou short message to be sent, the sending moment of the Beidou short message to be sent is indicated, whether other Beidou short messages are sent at the sending moment of the Beidou short message is further judged, if other Beidou short messages are sent, sending conflicts exist, and if no (namely only the Beidou short message is sent), sending conflicts do not exist. The points to be explained are: the beidou short messages with sending conflicts can be beidou short messages of the same type or beidou short messages of different types, so that the obtained beidou short messages to be sent of various types can include: in the process of acquiring the Beidou short messages of different types, at least two Beidou short messages of the same type can be acquired.
Based on the above explanation, in this embodiment, one implementation manner of determining whether a transmission collision occurs between the Beidou short messages of each type at the current transmission time may be that the determination is performed through the transmission cycle of the Beidou short messages of each type, and the flow of the determination is shown in steps S201 to S202 in fig. 2:
s201, obtaining sending periods of the Beidou short messages of various types. The sending period of each type of Beidou short message is used for indicating the sending time of each type of Beidou short message, and further for one Beidou short message, the sending period of the Beidou short message is also used for indicating the repeating period of the sending time of the Beidou short message so as to indicate when the Beidou short message is sent through the sending period of the Beidou short message. It should be noted that each type of beidou short message may be set or even changed in transmission period according to the requirement.
S202, judging whether the current sending time is the sending time of at least two types of Beidou short messages in each type of Beidou short messages, if so, indicating that at least two types of Beidou short messages need to be sent at the current sending time, obtaining a judgment result that a sending conflict exists at the current sending time, and executing the step S103; if not, the current sending time is the sending time of one type of Beidou short message in the Beidou short messages of all types, so that the current sending time is only one Beidou short message needing to be sent, a judgment result that no sending conflict exists at the current sending time is obtained, and the step S104 is executed.
One point to be explained here is: in the actual Beidou short message processing process, whether the sending time of one Beidou short message is reached or not can be monitored in real time, if the sending time is the sending time of the Beidou short message, whether other Beidou short messages are sent at the current sending time or not is judged based on the sending periods of other Beidou short messages at the current sending time, and if the other Beidou short messages are sent at the current sending time, sending conflicts exist at the current sending time.
S103, generating a combined message according to each Beidou short message with sending conflict, and sending the combined message.
In this embodiment, the combined message is used to send each beidou short message with sending conflict as one combined message, that is, the combined message includes each beidou short message with sending conflict, so that a plurality of beidou short messages can be sent in the same combined message, and it is ensured that the content of the plurality of beidou short messages sent in one combined message is not lost. FIG. 3 is a flow diagram of one embodiment of generating a combined message, comprising the steps of:
s301, generating the message identification of the combined message. The message identifiers are also called message IDs, and the message identifiers of each beidou short message (the combined message is also regarded as a beidou short message) are different, so that the corresponding beidou short message is represented by the message identifier. The message identifier is generally positioned at the beginning of the Beidou short message and is represented by one byte; the message identification can be arranged at other positions in the Beidou short message according to different requirements, and more or less bytes are used for representing the message identification.
S302, counting the number of each Beidou short message with sending conflict. The number of each Beidou short message with sending conflict (hereinafter referred to as short message number) can be represented by one byte, and after the short message is positioned in the message identifier of the combined message, the number of the short messages can be set in other positions in the combined message according to different requirements, and the number of the short messages can be represented by more or less bytes.
And S303, cascading each Beidou short message with the sending conflict to obtain message content, wherein the message content is composed of each Beidou short message with the sending conflict. In this step, the cascading of the Beidou short messages with the sending conflict can be that after the Beidou short messages with the sending conflict are sequentially arranged in the number of the short messages, the sequence of the Beidou short messages with the sending conflict can be arranged according to a preset sequence, for example, the Beidou short messages are sequenced according to message identifiers or according to the time for obtaining the Beidou short messages; the sequence of the big dipper short message arrangement can also be randomly ordered and arranged, and is not specifically limited herein.
It should be noted that the execution sequence of steps S301, S302, and S303 is not specifically limited herein, and may be executed simultaneously in 3 steps or executed in a fixed order.
S304, the message identification, the counted number and the message content of the combined message are sequentially cascaded to generate the combined message. One of the message formats of the combined message is shown in fig. 4, where the first byte in the combined message is a message identifier, the second byte is the number of short messages, i.e., a statistical number, and is used to indicate the number of cascaded beidou short messages, and the third byte is followed by the mutually cascaded beidou short messages. In other embodiments, different message formats may be set for the combined message according to different application fields, which is not specifically limited herein.
It should be noted that the combined message is a message sent in an aperiodic manner, the sending time of the combined message is determined by the beidou short message to be sent, and when there is a beidou short message with a sending conflict, the combined message is generated and sent; that is to say, the combined message can be obtained from the Beidou short messages with the sending conflict when the Beidou short messages with the sending conflict exist, and the message length of the currently generated combined message is determined by the message length of each Beidou short message with the sending conflict, and is not a fixed value.
In this embodiment, not only by controlling the message length of the beidou short message to be as short as possible, but also setting the sending periods of the beidou short messages of different types, the message length of the combined message generated by each beidou short message with sending conflicts can also meet the requirement of the beidou short message length in the beidou satellite navigation system. Use above-mentioned big dipper short message 1, big dipper short message 2 and big dipper short message 3 as an example, the combination message that big dipper short message 1, the big dipper short message 2 and the big dipper short message 3 arbitrary two kinds of big dipper short message combination generated all accords with the requirement to the message length of big dipper short message among the big dipper satellite navigation system, but the message length of the combination message that the big dipper short message combination of 3 types generated is not conform to the requirement to the message length of big dipper short message among the big dipper satellite navigation system, so can set up big dipper short message 1 through the regulation, the sending cycle of big dipper short message 2 and big dipper short message 3, avoid big dipper short message 1, big dipper short message 2 and big dipper short message 3 arrive the sending moment simultaneously and produce and send the conflict.
It should be noted that the combined message is also a beidou short message.
S104, determining the Beidou short messages sent at the current sending time from the various types of Beidou short messages, and sending the determined Beidou short messages.
The Beidou short messages reaching the sending time are determined from the Beidou short messages of various types, the sending time of the Beidou short messages is the current sending time, the Beidou short messages are the Beidou short messages of the current sending time, the determined Beidou short messages are sent as independent messages, and the message format of the independent messages is as shown in figure 5: the first byte in the independent message is the message ID, and the bytes except the first byte are the message content. It should be noted that the message contents of the beidou short messages of different types are different.
When the combined message or the determined Beidou short message is sent, the sender sends out the identification (such as the Beidou card number) of the receiver and the Beidou short message (the combined message or the determined Beidou short message) to be sent together. After the combined message is sent or the determined Beidou short message is sent, the next sending time can be waited, the next sending time is also the sending time of one Beidou short message in each type of Beidou short messages, and the sending of each type of Beidou short messages to be sent is controlled by the short message processing method provided by the embodiment when the next sending time is reached.
According to the embodiment, the combined message is generated by each Beidou short message with sending conflict, and each Beidou short message with sending conflict is sent out together in a mode of sending the combined message, so that the Beidou short messages with sending conflict can be sent in time in a mode of combining the messages, the technical effect of sending each Beidou short message with sending conflict in time is achieved, and the technical problem that part of Beidou short messages cannot be sent in time when sending conflict exists between the Beidou short messages is solved.
And generating a combined message from the Beidou short messages which are sent in conflict, wherein the receiver of the combined message needs to analyze the combined message into the corresponding Beidou short message. Referring to fig. 6, a flowchart of a short message processing method according to another embodiment of the present invention is shown, which includes the following steps:
s401, receiving the Beidou short message. The beidou short message may be a single beidou short message (i.e., an independent message), such as the independent message shown in fig. 5, or may be a combined message encapsulated by each beidou short message with sending collision.
S402, if the received Beidou short messages are combined messages, each Beidou short message with sending conflict is analyzed from the combined messages.
In this embodiment, the type of the received packet may be determined according to different packet formats of the combined packet and the independent packet. For example, in one embodiment, the message identifier of the combined message and the message identifier of the independent message using different values may be set, so that whether the message is the combined message or the independent message may be determined according to the message identifier of the received message. Taking the Beidou short message 1, the Beidou short message 2 and the Beidou short message 3 as examples: the message identification of the Beidou short message 1 is set to be 1, and the message identification of the Beidou short message 2 is set to be 2; the message identification of the Beidou short message 3 is set to be 3; the message identifier of the combined message is set to 9.
The implementation method for analyzing the combined message may adopt the following method:
firstly, the number of each Beidou short message which is packaged into the combined message and has sending conflict is obtained from the combined message, and the message content is obtained from the combined message.
Secondly, according to the number of each Beidou short message with sending conflict, analysis is carried out from the first byte in the message content, after one Beidou short message is analyzed each time, the message content of the combined message is shifted according to the message length of the Beidou short message so as to analyze the next Beidou short message until the Beidou short message with the number of the short messages recorded in the combined message is analyzed.
One implementation mode for analyzing the Beidou short message is as follows: analyzing the type of the Beidou short message through the message identification of the Beidou short message; because the message lengths of the Beidou short messages of different types are different, the message length of the Beidou short message can be determined according to the type of the Beidou short message, and the complete Beidou short message can be analyzed according to the determined message length. Because the message content of the combined message is formed by mutually cascading Beidou short messages, after one Beidou short message is analyzed currently, according to the message length of the currently analyzed Beidou short message, the offset is carried out on the message content of the combined message, then the next Beidou short message is analyzed until the message content of the combined message is analyzed, and the number of the Beidou short messages is the same as the number of the short messages in the combined message.
One point to be noted here is: after a big dipper short message is analyzed each time, the offset of the combined message when the message content of the combined message is offset according to the length of the big dipper short message is as follows: if the sum of the message length of the Beidou short message and the message lengths of other analyzed Beidou short messages is analyzed for the second time, the offset of the combined message is as follows: the sum of the message length of the Beidou short message analyzed for the second time and the message length of the Beidou short message analyzed for the first time.
According to the short message processing method, the types of the received Beidou short messages are distinguished through the message formats of the received Beidou short messages, and the Beidou short messages cascaded in the message contents of the combined messages are analyzed when the received Beidou short messages are combined messages, so that the communication task of the Beidou short messages is completed.
For convenience of understanding, how to solve the sending conflict generated by the big dipper short message in an emergency application scene (for example, in an emergency communication scene of civil airborne big dipper equipment) when the short message processing method of the present invention is applied to an airborne short message system in the technical field of aviation is described below. Assuming that each type of Beidou short message in the airborne short message system comprises: beidou short message c1, Beidou short message c2 and Beidou short message c 3.
Referring to fig. 7, a flowchart of a short message processing method of an airborne short message system according to an embodiment of the present invention is shown, where the execution subject is a terminal on an aircraft, and the method includes the following steps:
s501, obtaining the sending periods of the Beidou short message c1, the Beidou short message c2 and the Beidou short message c 3. In this embodiment, the sending period of the Beidou short messages of each type may be set as follows: the sending period of the beidou short message c1 is 30 minutes, the sending period of the beidou short message c2 is 5 minutes, and the sending period of the beidou short message c3 is 60 minutes. The sending period of each type of beidou short message can be set with different time intervals according to the requirements of different application scenes.
S502, when the current time is the sending time of the Beidou short message c2 in the Beidou short message c1, the Beidou short message c2 and the Beidou short message c3, whether the Beidou short message c1 and the Beidou short message c3 conflict with the Beidou short message c2 or not is judged. When a transmission conflict exists between the Beidou short message c1 and the Beidou short message c2, executing the step S503, and when a transmission conflict exists between the Beidou short message c1, the Beidou short message c2 and the Beidou short message c3, executing the step S504; when only the beidou short message c2 needs to be sent, step S505 is executed.
The transmission cycle obtained in step S502 is known as: taking every 60 minutes as a cycle, in the (n-4) th (n is a positive integer not greater than 15) minute, the sending time of the Beidou short message c2 is not reached, and the sending times of the Beidou short message c1 and the Beidou short message c3 are not reached, which indicates that no message needs to be sent at the current time, and then the next sending time is waited; at the sending time of the 5m (m is a positive integer not greater than 12) minute, only the beidou short message c2 needs to be sent, and step S505 is executed; at the sending time of the 30 th minute, the beidou short message c1 and the beidou short message c2 generate sending conflict, and step S503 is executed; at the sending time of the 60 th minute, the beidou short message c1, the beidou short message c2 and the beidou short message c3 will generate sending collision, and step S504 is executed.
S503, the Beidou short message c1 and the Beidou short message c2 with the sending conflict are cascaded to generate a first combined message and send the first combined message.
In the step, the first byte in the first combined message is a message Identifier (ID), and the second byte is 2, which is used to indicate that the number of the concatenated short messages is 2. The third byte of the first combined message starts to be the concatenated beidou short message c2 and beidou short message c1, and the message format of the combined message is as shown in fig. 8. Only one concatenation sequence is shown in fig. 8, and in other embodiments, the beidou short message c1 may precede the beidou short message c 2. When the first combined message is sent, the Beidou card number of the first combined message receiver and the first combined message are sent out by the sender.
It should be noted that the message identifier may set message identifiers with different values according to the message type, so that the message identifier may be read by the receiver to determine the type of the received message. For example, the message identifier of the beidou short message c1 may be set to 1, and the message identifier of the beidou short message c2 may be set to 2; the message identification of the Beidou short message c3 is set to be 3; the message identifiers of the first combined message and the second combined message are set to be 9. In other embodiments, the first combined packet and the second combined packet may also be set as different packet identifiers.
And S504, cascading the Beidou short message c1, the Beidou short message c2 and the Beidou short message c3 with the sending conflict to generate a second combined message and send the second combined message.
In the second combined message in this step, the first byte is a message Identifier (ID), and the second byte is 3, which is used to indicate that the number of the concatenated short messages is 3. The third byte of the second combined message starts to be the concatenated beidou short message c2, beidou short message c1 and beidou short message c3, and the message format of the second combined message is shown in fig. 9. Only one cascade order is shown in fig. 9, and in other embodiments, the beidou short message c2, the beidou short message c1, and the beidou short message c3 may be cascaded in other orders. And when the second combined message is sent, the Beidou card number of the second combined message receiver and the second combined message are sent out by the sender.
And S505, sending the Beidou short message c2 at the current moment. In this step, when the beidou short message c2 is sent, the beidou card number of the beidou short message c2 receiver and the beidou short message c2 of the sender are sent out together.
In the embodiment, the corresponding combined message is generated by each Beidou short message with sending conflict in the airborne short message system, and each Beidou short message with sending conflict is sent out in a mode of sending the combined message, so that the Beidou short messages with sending conflict can be sent in time in a mode of combining the messages, the technical effect of sending each Beidou short message with sending conflict in time is achieved, and the technical problem that part of Beidou short messages cannot be sent in time when sending conflict exists between the Beidou short messages of the airborne short message system is solved.
Fig. 7 illustrates a beidou short message c2 as an example, and when the current time is the sending time of the beidou short message c1 or the beidou short message c3, the processing needs to be performed by the short message processing method illustrated in fig. 7 to determine whether a sending collision exists when the beidou short message c1 or the beidou short message c3 is sent, which is not described in this embodiment.
Referring to fig. 10, another short message processing method applied to an airborne short message system according to another application embodiment of the present invention is applied to a ground operation center in the airborne short message system, such as a beidou ground application system, which explains an analysis process after the ground operation center receives a beidou short message, and may include the following steps:
s601, receiving the Beidou short message. The received Beidou short message is one of a Beidou short message c1, a Beidou short message c2, a Beidou short message c3 or a combined message, and the Beidou short message c1, the Beidou short message c2 and the Beidou short message c3 are independent messages. The combined message comprises a first combined message and a second combined message.
S602, judging whether the received Beidou short message is a combined message. If the received Beidou short message is a combined message, executing the steps S603 and S604; if the received message is not a combined message, step S605 is executed.
In the step, the type of the received Beidou short message is determined according to the difference of the message identifications of the combined message and the independent message. When the message identifier of the beidou short message is 9, executing the steps S603 and S604; and when the message identifier of the beidou short message is not 9, executing the step S605.
S603, each Beidou short message with sending conflict is analyzed from the combined message.
Firstly, the number of short messages of the second byte is obtained from the combined message, and the message content in the combined message is obtained.
Secondly, according to the number of the short messages, analyzing from the first byte in the message content, and analyzing the type of the Beidou short message through the message format (or message identification) of the first Beidou short message in the message content; because the message lengths of the Beidou short messages of different types are different, the message length of the Beidou short message can be determined according to the type of the Beidou short message, and a complete Beidou short message can be analyzed according to the determined message length.
After one Beidou short message is analyzed each time, according to the message length of the previous Beidou short message, deviation is carried out on the message content of the airplane combined message, then the next Beidou short message is analyzed until the message content of the combined message is analyzed, and finally the number of the Beidou short messages is the same as the number of the short messages in the airplane combined message.
S604, when the received Beidou short message is an independent message, processing the received independent message.
And determining whether the independent message needs to be forwarded or not according to the Beidou card number of the independent message receiver received together with the independent message. And if the Beidou card number of the Beidou ground application center system is consistent with the Beidou card number of the independent message receiver, analyzing the message content of the independent message. And if the Beidou card number of the Beidou ground application center system is inconsistent with the Beidou card number of the independent message receiver, sending the received independent message to the target equipment corresponding to the Beidou card number. The received independent message includes: one of the beidou short message c2, beidou short message c1 and beidou short message c 3.
According to the technical scheme, the types of the received Beidou short messages are distinguished through different message formats of the received Beidou short messages, the Beidou short messages cascaded in the message content of the combined message are analyzed when the received Beidou short messages are combined messages, the received independent messages are processed, and the communication task of the Beidou short messages is completed.
Referring to fig. 11, a schematic structural diagram of a short message processing apparatus according to another embodiment of the present invention is shown in the following description of an apparatus embodiment corresponding to the method, where the apparatus includes: a message transceiver module 701 and a message assembly module 702.
The message transceiving module 701 is used for acquiring each type of Beidou short messages to be sent.
For the description of the working process of the message transceiver module 701 for obtaining each type of beidou short message to be sent, and for the explanation of the related nouns, refer to the description of the process in step S101 in the above embodiment, which is not described herein again. The message assembling module 702 includes a judging unit 801, an assembling unit 802, and a determining unit 803. Fig. 13 shows a schematic structural diagram of the message assembly module 702.
The judging unit 801 is configured to judge whether a transmission conflict exists between each type of beidou short message at the current transmission time, so as to obtain a judgment result.
The assembling unit 802 is configured to generate a combined message according to each Beidou short message with a sending conflict and send the combined message to the message transceiver module 701 if the determination result indicates that the Beidou short messages of each type have a sending conflict at the current sending time. Specifically, the assembling unit 802 may encapsulate each beidou short message with a sending conflict into one combined message, and send the combined message to the message transceiver module 701.
The method for encapsulating each beidou short message with a sending conflict into one combined message by the assembling unit 802 may be as follows: generating a message identifier of the combined message; counting the number of each Beidou short message with sending conflict; cascading each Beidou short message with sending conflict to obtain message content; the message identifiers, the counted number, and the message content of the combined message are sequentially cascaded to generate the combined message and send the combined message to the message transceiver module 701, for detailed process description, refer to the process description of steps S301 to S304 in the above embodiment, which is not described herein again.
The determining unit 803 is further configured to determine, if the determination result indicates that there is no transmission conflict between the Beidou short messages of different types at the current transmission time, the Beidou short message transmitted at the current transmission time from the Beidou short messages of different types, and transmit the determined Beidou short message to the message transceiver module 701.
After the message transceiver module 701 receives the combined message or the determined beidou short message from the message combining module 702, the message transceiver module 701 may send out the identifier of the receiver (such as the beidou card number) and the beidou short message (the combined message or the determined beidou short message) to be sent together. After the combined message is sent or the determined Beidou short message is sent, the next sending moment can be waited, and the next sending moment is also the sending moment of one Beidou short message in each type of Beidou short messages.
Please refer to the description of the processes of steps S102-S104 in the above embodiment for the working process of the message assembly module 702 and each unit thereof, which is not described herein again.
In the embodiment, each Beidou short message with sending conflict generates the combined message through the message assembling module 702, and each Beidou short message with sending conflict is sent out together in a mode of sending the combined message, so that the Beidou short messages with sending conflict can be sent in time by the message receiving and sending module 701 in the mode of the combined message, the technical effect of sending each Beidou short message with sending conflict in time is achieved, and the technical problem that part of Beidou short messages cannot be sent in time when sending conflict exists between the Beidou short messages is solved.
Referring to fig. 12, a schematic structural diagram of a short message processing apparatus according to another embodiment of the present invention is shown, and compared with fig. 11, the apparatus further includes a message configuration module 703.
The message configuration module 703 is configured to store a sending period of each type of beidou short message, where the sending period of each type of beidou short message is used to indicate a sending time of each type of beidou short message. The message configuration module 703 may also be configured to set or change the transmission cycle of each type of beidou short message.
Correspondingly, the determining unit 801 is specifically configured to: the sending period of each type of beidou short message is obtained from the message configuration module 703. And if the current sending time is the sending time of at least two types of Beidou short messages in each type of Beidou short messages, obtaining a judgment result that the sending conflict exists at the current sending time. And if the current sending time is the sending time of one type of Beidou short message in the Beidou short messages of all types, obtaining a judgment result that no sending conflict exists at the current sending time.
Please refer to the process descriptions of steps S201-S202 in the above embodiments for the description of the operation process of the determining unit 801, which is not described herein again.
Referring to fig. 14, a schematic structural diagram of a short message processing apparatus according to another embodiment of the present invention is shown, where the apparatus includes: a receiving unit 901 and an analyzing unit 902.
A receiving unit 901, configured to receive a beidou short message;
and the analyzing unit 902 is configured to analyze each beidou short message with a sending conflict from the combined message if the received beidou short message is the combined message.
The parsing unit 902 is specifically configured to: acquiring the number of each Beidou short message which is packaged into the combined message and has sending conflict and acquiring message content from the combined message;
and according to the number of each Beidou short message with sending conflict, analyzing from the first byte in the message content, after one Beidou short message is analyzed each time, offsetting the message content of the combined message according to the message length of the Beidou short message so as to analyze the next Beidou short message until the Beidou short message with the number is analyzed.
For the description of the working processes of the receiving unit 901 and the parsing unit 902, please refer to the description of the processes of steps S401 to S402 in the above embodiments, which is not described herein again.
The short message processing device of the embodiment distinguishes the type of the received Beidou short message according to the message format of the received Beidou short message, analyzes the cascaded Beidou short message in the message content of the combined message when the received Beidou short message is the combined message, and completes the communication task of the Beidou short message.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A short message processing method is characterized by comprising the following steps:
acquiring various types of Beidou short messages to be sent;
judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment or not to obtain a judgment result;
if the judgment result shows that the Beidou short messages of all types have sending conflict at the current sending moment, generating a combined message according to each Beidou short message with sending conflict, and sending the combined message;
and if the judgment result shows that no transmission conflict exists between the Beidou short messages of all types at the current transmission moment, determining the Beidou short message transmitted at the current transmission moment from the Beidou short messages of all types, and transmitting the determined Beidou short message.
2. The method according to claim 1, wherein the determining whether there is a transmission conflict between the Beidou short messages of each type at the current transmission time includes:
acquiring the sending period of each type of Beidou short message, wherein the sending period of each type of Beidou short message is used for indicating the sending time of each type of Beidou short message;
if the current sending time is the sending time of at least two types of Beidou short messages in the various types of Beidou short messages, obtaining a judgment result that the sending conflict exists at the current sending time;
and if the current sending time is the sending time of one type of Beidou short message in the various types of Beidou short messages, obtaining a judgment result that no sending conflict exists at the current sending time.
3. The method according to claim 1 or 2, wherein the generating a combined message according to each beidou short message with a sending conflict comprises:
and packaging each Beidou short message with the sending conflict into a combined message.
4. The method of claim 3, wherein encapsulating each Beidou short message with the sending conflict into one combined message comprises:
generating a message identifier of the combined message;
counting the number of each Beidou short message with sending conflict;
cascading the Beidou short messages with the sending conflict to obtain message contents;
and sequentially cascading the message identification, the counted number and the message content of the combined message to generate the combined message.
5. A short message processing method is characterized by comprising the following steps:
receiving a Beidou short message;
and if the received Beidou short messages are combined messages, resolving each Beidou short message with sending conflict from the combined messages.
6. The method according to claim 5, wherein the analyzing each beidou short message with a transmission collision from the combined message comprises:
acquiring the number of each Beidou short message which is packaged into the combined message and has sending conflict and acquiring message content from the combined message;
and according to the number of each Beidou short message with sending conflict, analyzing from the first byte in the message content, after one Beidou short message is analyzed each time, offsetting the message content of the combined message according to the message length of the Beidou short message so as to analyze the next Beidou short message until the number of Beidou short messages is analyzed.
7. A short message processing apparatus, comprising: a message receiving and sending module and a message assembling module; wherein
The message receiving and sending module is used for acquiring various types of Beidou short messages to be sent;
the message assembling module comprises a judging unit, an assembling unit and a determining unit;
the judging unit is used for judging whether transmission conflicts exist among the Beidou short messages of various types at the current transmission moment to obtain a judging result;
the assembling unit is used for generating a combined message according to each Beidou short message with sending conflict and sending the combined message to the message receiving and sending module if the judging result shows that the Beidou short messages of each type have sending conflict at the current sending moment, and the message receiving and sending module sends the combined message;
the determining unit is used for determining the Beidou short messages sent at the current sending time from the Beidou short messages of each type and sending the determined Beidou short messages to the message receiving and sending module if the judging result shows that no sending conflict exists between the Beidou short messages of each type at the current sending time, and the message receiving and sending module sends the determined Beidou short messages.
8. The device according to claim 7, further comprising a message configuration module, configured to store a sending period of each type of beidou short message, where the sending period of each type of beidou short message is used to indicate a sending time of each type of beidou short message;
the judgment unit is specifically configured to:
acquiring the sending period of each type of Beidou short message from the message configuration module;
if the current sending time is the sending time of at least two types of Beidou short messages in the various types of Beidou short messages, obtaining a judgment result that the sending conflict exists at the current sending time;
and if the current sending time is the sending time of one type of Beidou short message in the various types of Beidou short messages, obtaining a judgment result that no sending conflict exists at the current sending time.
9. The device according to claim 7 or 8, characterized in that the assembly unit is particularly adapted to:
packaging each Beidou short message with the sending conflict into a combined message, and sending the combined message to the message receiving and sending module;
wherein, encapsulating each Beidou short message with sending conflict into a combined message comprises:
generating a message identifier of the combined message; counting the number of each Beidou short message with sending conflict; cascading the Beidou short messages with the sending conflict to obtain message contents; and sequentially cascading the message identification, the counted number and the message content of the combined message to generate the combined message and sending the combined message to the message transceiving module.
10. A short message processing apparatus, comprising:
the receiving unit is used for receiving the Beidou short message;
the analysis unit is used for analyzing each Beidou short message with sending conflict from the combined message if the received Beidou short message is the combined message;
wherein the analysis of each Beidou short message with sending conflict from the combined message comprises: acquiring the number of each Beidou short message which is packaged into the combined message and has sending conflict and acquiring message content from the combined message; and according to the number of each Beidou short message with sending conflict, analyzing from the first byte in the message content, after one Beidou short message is analyzed each time, offsetting the message content of the combined message according to the message length of the Beidou short message so as to analyze the next Beidou short message until the number of Beidou short messages is analyzed.
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| CN114363837A (en) * | 2021-12-29 | 2022-04-15 | 中国海洋石油集团有限公司 | Offshore oil platform monitoring data returning system and method under extreme weather working conditions |
| CN114363837B (en) * | 2021-12-29 | 2023-04-18 | 中国海洋石油集团有限公司 | Offshore oil platform monitoring data returning system and method under extreme weather working conditions |
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