WO2023011594A1 - 北斗通信系统中的信箱概况查询方法、系统及相关装置 - Google Patents

北斗通信系统中的信箱概况查询方法、系统及相关装置 Download PDF

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Publication number
WO2023011594A1
WO2023011594A1 PCT/CN2022/110306 CN2022110306W WO2023011594A1 WO 2023011594 A1 WO2023011594 A1 WO 2023011594A1 CN 2022110306 W CN2022110306 W CN 2022110306W WO 2023011594 A1 WO2023011594 A1 WO 2023011594A1
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WIPO (PCT)
Prior art keywords
terminal
mailbox
message
field
letters
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PCT/CN2022/110306
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English (en)
French (fr)
Inventor
甘雯昱
钱锋
朱颖
姚振东
姚楚婷
刘永祥
Original Assignee
华为技术有限公司
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Priority claimed from CN202111212369.5A external-priority patent/CN115842799A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023011594A1 publication Critical patent/WO2023011594A1/zh

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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]

Definitions

  • the present application relates to the technical field of Beidou communication, and in particular to a mailbox profile query method, system and related devices in the Beidou communication system.
  • the Beidou satellite navigation system is a major infrastructure independently developed by my country that integrates positioning, timing, and communication.
  • the Beidou short message system uses the Beidou satellite system to realize the transmission of short message information. It is especially suitable for communication in areas where mobile communication is not covered, or cannot be covered, or the communication system is destroyed, such as oceans, deserts, grasslands, and uninhabited areas.
  • the terminal When the terminal is in an environment where the mobile communication is not covered, or the coverage is not covered, or the communication system is damaged, the terminal cannot communicate in time through the cellular network or wireless local area network (for example, wireless fidelity (Wi-Fi)). Know if there is a letter sent to this terminal.
  • Wi-Fi wireless fidelity
  • This application provides a mailbox profile query method, system and related devices in the Beidou communication system.
  • the method of mailbox profile query in the Beidou communication system provided by the embodiment of the application, when the environment where the terminal is located does not have a cellular network, Or in the case of a wireless local area network, the terminal can also know the number of letters sent to the terminal by other terminals.
  • the present application provides a mailbox overview query method in the Beidou communication system.
  • the method may include: the first terminal sends a mailbox overview query request message to the Beidou network device, and the mailbox overview query request message is used to query a or the number of letters sent by multiple second terminals to the first terminal, the mailbox overview query request message includes a message ID field, and the message ID field is used to indicate the ID of the first letter successfully received by the first terminal last time, the first The ID of the letter is used to instruct the Beidou network equipment to delete the first letter; the first terminal receives the mailbox overview query result message sent by the Beidou network equipment; the mailbox overview query result message includes a number of letters field; the number of letters field is used to indicate one or The number of letters sent by multiple second terminals to the first terminal, the number of letters sent by one or more second terminals to the first terminal does not include the number of first letters.
  • the terminal can also know whether other terminals have sent letters to the first terminal, and know the number of letters sent to the first terminal by other terminals. Moreover, the first terminal learns that the number of letters sent to the first terminal by other terminals does not include the number of downloaded letters. In this way, the Beidou network equipment will not repeatedly count the letters that have been sent, and send the same letter to the first terminal repeatedly.
  • the mailbox profile query request message also includes a service type field, and when the service type field is the first value, the service type field is used to indicate the mailbox profile query request message Used to query the number of letters sent from the second terminal in the whitelist to the first terminal; when the service type field is the second value, the service type field is used to indicate that the mailbox overview query request message is used to query the non-whitelist The number of letters sent by the second terminal in the first terminal to the first terminal; in the case that the service type field is the third value, the service type field is used to indicate that the mailbox overview query request message is used to query all the second terminals sent to the first terminal The number of letters of the terminal; wherein, the first terminal is provided with a white list, and the white list is used to store the identification of the second terminal associated with the first terminal and the serial number of the second terminal associated with the first terminal.
  • the first terminal can specify the specific service type of the mailbox profile query request message through the service type field.
  • the Beidou network device After the Beidou network device receives the mailbox profile query request message, it can also learn the service type of the mailbox profile query request message through the service type field.
  • the mailbox overview query request message when the service type field is the first value, also includes a sender ID field, and the sender ID field is a whitelist bitmap, The first bit of the whitelist bitmap is used to indicate the identification of the second terminal of the first sequence number in the whitelist; in the case that the service type field is the second value, the mailbox profile query request message also includes the sender ID field , the sender ID field is used to indicate the mobile phone number of the second terminal not in the white list.
  • the Beidou network device can determine which terminal to query for the number of letters sent to the first terminal according to the identifier in the sender ID field.
  • the mailbox profile query request message also includes a return receipt indication field, which can be used to indicate the receiving device of the mailbox profile query request message (for example, Beidou Network device) whether it is necessary to reply an application layer receipt to the first terminal.
  • the application layer receipt can be used to indicate whether the receiving device has successfully received the mailbox profile query request message.
  • the length of the receipt indication field may be 1 bit.
  • the return receipt indication field is a value D1 (for example, 0)
  • D2 for example, 1
  • the mailbox profile query request message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query request message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query request message further includes a compression indication field, which may be used to indicate whether the mailbox profile query request message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query request message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the mailbox profile query result message also includes a whitelist indication field, and when the whitelist indication field is the fourth value, the whitelist indication field is used to indicate the number of letters The field is the number of letters sent to the first terminal by a second terminal not in the whitelist; in the case where the whitelist indication field is the fifth value, the whitelist indication field is used to indicate that the number of letters is in the whitelist The number of letters sent by the second terminal to the first terminal, or the number of letters sent by all the second terminals to the first terminal.
  • the first terminal After the first terminal receives the mailbox profile query result message, it knows how to parse the number of letters field in the mailbox profile query result message.
  • the mailbox profile query result message also includes a message type indication field, and when the message type indication field is the sixth value, the message type indication field is used to indicate the mailbox profile query
  • the result message is used to inquire about the quantity of letters sent to the first terminal by one or more second terminals; in the case that the message type indication field is the seventh value, the message type indication field is used to indicate that the mailbox profile query result message is used for downloading the contents of one or more letters sent from the second terminal to the first terminal.
  • the first terminal after receiving the mailbox profile query result message, the first terminal can determine the type of the mailbox profile query result message according to the message type indication field in the mailbox profile query result message. Therefore, the first terminal can correctly parse the mailbox profile query result message.
  • the whitelist indication field in the mailbox profile query result message is the fourth value.
  • the message type indication field in the mailbox profile query result message is the sixth value; in the case of the service type in the mailbox profile query request message as the first value or the third value, the message type in the mailbox profile query result message
  • the white list indication field is the fifth value, and the message type indication field in the mailbox profile query result message is the sixth value.
  • the mailbox profile query result message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query result message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query result message further includes a compression indication field, which may be used to indicate whether the mailbox profile query result message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query result message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the first terminal sends a mailbox profile query request message to the Beidou network device, which specifically includes: the first terminal sends the mailbox profile query request message to the first terminal at the application APP layer.
  • the message data of a terminal is aggregated at the MDCP layer as the MDCP service data unit SDU of the MDCP layer; the first terminal splits the MDCP SDU into one or more MDCP protocol data units PDU after adding padding data and redundant length indication fields;
  • One or more MDCP PDUs include the first MDCP PDU; the first terminal sends the first MDCP PDU to the satellite link control SLC layer as the SLC SDU of the SLC layer; the first terminal splits the SLC SDU into one or more SLC PDU: The first terminal sends one or more SLC PDUs to Beidou network equipment.
  • the first terminal receives the mailbox overview query result message sent by the Beidou network device, which specifically includes: the first terminal receives P SLC PDUs sent by the Beidou network device ; P is a positive integer; the first terminal assembles P SLC PDUs into Q SLC SDUs at the SLC layer; Q is a positive integer, and Q is less than or equal to P; the first terminal uploads Q SLC SDUs to the MDCP layer as MDCP Q MDCP PDUs at the MDCP layer; the first terminal assembles Q MDCP PDUs into MDCP SDUs at the MDCP layer; the first terminal removes the padding data and redundant length indication fields from the MDCP SDUs at the MDCP layer, and then uploads them to the APP layer as a mailbox Profile query result message.
  • the method further includes: the first terminal parses out the number of letters in the mailbox overview query result message The number of letters of the first terminal sent by one or more second terminals in the field; the first terminal displays the number of letters of the first terminal sent by one or more second terminals on the display screen.
  • a method for querying mailbox profiles in a Beidou communication system may include: a Beidou network device receives a mailbox profile query request message sent by a first terminal, and the mailbox profile query request message is used to query one or The number of letters sent by a plurality of second terminals to the first terminal.
  • the mailbox profile query request message includes a message ID field, and the message ID field is used to indicate the ID of the first letter successfully received by the first terminal last time.
  • the first letter The ID of the Beidou network device is used to instruct the Beidou network device to delete the first letter; based on the mailbox profile query request message, the Beidou network device generates a mailbox profile query result message, and the mailbox profile query result message includes a number of letters field; the number of letters field is used to indicate The number of letters sent by one or more second terminals to the first terminal; the number of letters sent by one or more second terminals to the first terminal does not include the number of first letters; Beidou network equipment sends to the first terminal Mailbox overview query result message.
  • the terminal can also know whether other terminals have sent letters to the first terminal, and know the number of letters sent to the first terminal by other terminals. Moreover, the first terminal learns that the number of letters sent to the first terminal by other terminals does not include the number of downloaded letters. In this way, the Beidou network equipment will not repeatedly count the letters that have been sent, and send the same letter to the first terminal repeatedly.
  • the mailbox profile query request message also includes a service type field, and when the service type field is the first value, the service type field is used to indicate the mailbox profile query request message Used to query the number of letters sent from the second terminal in the whitelist to the first terminal; when the service type field is the second value, the service type field is used to indicate that the mailbox overview query request message is used to query the non-whitelist The number of letters sent by the second terminal in the first terminal to the first terminal; in the case that the service type field is the third value, the service type field is used to indicate that the mailbox overview query request message is used to query all the second terminals sent to the first terminal The number of letters of the terminal; wherein, the first terminal is provided with a white list, and the white list is used to store the identification of the second terminal associated with the first terminal and the serial number of the second terminal associated with the first terminal.
  • the first terminal can specify the specific service type of the mailbox profile query request message through the service type field.
  • the Beidou network device After the Beidou network device receives the mailbox profile query request message, it can also learn the service type of the mailbox profile query request message through the service type field.
  • the mailbox overview query request message when the service type field is the first value, also includes a sender ID field, and the sender ID field is a whitelist bitmap, The first bit of the whitelist bitmap is used to indicate the identification of the second terminal of the first sequence number in the whitelist; in the case that the service type field is the second value, the mailbox profile query request message also includes the sender ID field , the sender ID field is used to indicate the mobile phone number of the second terminal not in the white list.
  • the Beidou network device can determine which terminal to query for the number of letters sent to the first terminal according to the identifier in the sender ID field.
  • the mailbox profile query request message also includes a return receipt indication field, which can be used to indicate the receiving device of the mailbox profile query request message (for example, Beidou Network device) whether it is necessary to reply an application layer receipt to the first terminal.
  • the application layer receipt can be used to indicate whether the receiving device has successfully received the mailbox profile query request message.
  • the length of the receipt indication field may be 1 bit.
  • the return receipt indication field is a value D1 (for example, 0)
  • D2 for example, 1
  • the mailbox profile query request message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query request message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query request message further includes a compression indication field, which may be used to indicate whether the mailbox profile query request message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query request message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the mailbox profile query result message also includes a whitelist indication field, and when the whitelist indication field is the fourth value, the whitelist indication field is used to indicate the number of letters The field is the number of letters sent to the first terminal by a second terminal not in the whitelist; in the case where the whitelist indication field is the fifth value, the whitelist indication field is used to indicate that the number of letters is in the whitelist The number of letters sent by the second terminal to the first terminal, or the number of letters sent by all the second terminals to the first terminal.
  • the first terminal after receiving the mailbox profile query result message, the first terminal knows how to parse the number of letters field in the mailbox profile query result message.
  • the mailbox profile query result message also includes a message type indication field, and when the message type indication field is the sixth value, the message type indication field is used to indicate the mailbox profile query
  • the result message is used to inquire about the quantity of letters sent to the first terminal by one or more second terminals; in the case that the message type indication field is the seventh value, the message type indication field is used to indicate that the mailbox profile query result message is used for downloading the contents of one or more letters sent from the second terminal to the first terminal.
  • the first terminal after receiving the mailbox profile query result message, the first terminal can determine the type of the mailbox profile query result message according to the message type indication field in the mailbox profile query result message. Therefore, the first terminal can correctly parse the mailbox profile query result message.
  • the whitelist indication field in the mailbox profile query result message is the fourth value.
  • the message type indication field in the mailbox profile query result message is the sixth value; in the case of the service type in the mailbox profile query request message as the first value or the third value, the message type in the mailbox profile query result message
  • the white list indication field is the fifth value, and the message type indication field in the mailbox profile query result message is the sixth value.
  • the mailbox profile query result message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query result message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query result message further includes a compression indication field, and the compression indication field may be used to indicate whether the mailbox profile query result message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query result message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the Beidou network device receives the mailbox profile query request message sent by the first terminal, including: the Beidou network device receives X SLC PDUs sent by the first terminal; X is Positive integer; Beidou network equipment combines X SLC PDUs into Y SLC SDUs at the SLC layer; Y is a positive integer, Y is less than or equal to X, Beidou network equipment uploads Y SLC SDUs to the MDCP layer as Y of the MDCP layer MDCP PDU; Beidou network equipment assembles Y MDCP PDUs into MDCP SDU at the MDCP layer; Beidou network equipment removes the padding data and redundant length indication fields from the MDCP SDU at the MDCP layer, and uploads it to the APP layer as a mailbox profile query request message.
  • the Beidou network device based on the mailbox profile query request message, the Beidou network device generates a mailbox profile query result message, including: the Beidou network device generates the mailbox profile query request message according to the mailbox profile query message, Query the number of letters sent by one or more second terminals to the first terminal in the short message center; the Beidou network device generates a mailbox overview query result report based on the number of letters sent by one or more second terminals to the first terminal arts.
  • the Beidou network device sends the mailbox overview query result message to the first terminal, including: the Beidou network device sends the mailbox overview query result message to the The message data of the Beidou network equipment is aggregated at the MDCP layer as the MDCP service data unit SDU of the MDCP layer; the Beidou network equipment splits the MDCP SDU into one or more MDCP protocol data units PDU after adding padding data and redundant length indication fields; One or more MDCP PDUs include the second MDCP PDU; Beidou network equipment sends the second MDCP PDU to the satellite link control SLC layer as the SLC SDU of the SLC layer; Beidou network equipment splits the SLC SDU into one or more SLC PDU; Beidou network equipment sends one or more SLC PDUs to the first terminal.
  • a Beidou communication system may include a terminal and a Beidou network device, wherein:
  • the first terminal is used to send a mailbox overview query request message to the Beidou network equipment.
  • the mailbox overview query request message is used to query the number of letters sent by one or more second terminals to the first terminal.
  • the mailbox overview query request message Including a message ID field, where the message ID field is used to indicate the ID of the first letter successfully received by the first terminal last time, and the ID of the first letter is used to instruct the Beidou network device to delete the first letter;
  • Beidou network equipment is used to receive mailbox profile query request messages
  • the Beidou network device is used to generate a mailbox profile query result message based on the mailbox profile query request message, and the mailbox profile query result message includes a number of letters field; the number of letters field is used to indicate that one or more second terminals send to the The number of letters of the first terminal, the number of letters sent by one or more second terminals to the first terminal does not include the number of the first letter;
  • the Beidou network device is used to send a mailbox overview query result message to the first terminal;
  • the first terminal is configured to receive a mailbox profile query result message.
  • the terminal can also know whether other terminals have sent letters to the first terminal, and know the number of letters sent to the first terminal by other terminals. Moreover, the first terminal learns that the number of letters sent to the first terminal by other terminals does not include the number of downloaded letters. In this way, the Beidou network equipment will not repeatedly count the letters that have been sent, and send the same letter to the first terminal repeatedly.
  • the mailbox profile query request message also includes a service type field, and when the service type field is the first value, the service type field is used to indicate the mailbox profile query request message Used to query the number of letters sent from the second terminal in the whitelist to the first terminal; when the service type field is the second value, the service type field is used to indicate that the mailbox overview query request message is used to query the non-whitelist The number of letters sent by the second terminal in the first terminal to the first terminal; in the case that the service type field is the third value, the service type field is used to indicate that the mailbox overview query request message is used to query all the second terminals sent to the first terminal The number of letters of the terminal; wherein, the first terminal is provided with a white list, and the white list is used to store the identification of the second terminal associated with the first terminal and the serial number of the second terminal associated with the first terminal.
  • the first terminal can specify the specific service type of the mailbox profile query request message through the service type field.
  • the Beidou network device After the Beidou network device receives the mailbox profile query request message, it can also learn the service type of the mailbox profile query request message through the service type field.
  • the mailbox overview query request message when the service type field is the first value, also includes a sender ID field, and the sender ID field is a whitelist bitmap, The first bit of the whitelist bitmap is used to indicate the identification of the second terminal of the first sequence number in the whitelist; in the case that the service type field is the second value, the mailbox profile query request message also includes the sender ID field , the sender ID field is used to indicate the mobile phone number of the second terminal not in the white list.
  • the Beidou network device can determine which terminal to query for the number of letters sent to the first terminal according to the identifier in the sender ID field.
  • the mailbox profile query request message also includes a return receipt indication field, which can be used to indicate the receiving device of the mailbox profile query request message (for example, Beidou Network device) whether it is necessary to reply an application layer receipt to the first terminal.
  • the application layer receipt can be used to indicate whether the receiving device has successfully received the mailbox profile query request message.
  • the length of the receipt indication field may be 1 bit.
  • the return receipt indication field is a value D1 (for example, 0)
  • D2 for example, 1
  • the mailbox profile query request message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query request message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query request message further includes a compression indication field, which can be used to indicate whether the mailbox profile query request message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query request message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the mailbox overview query result message also includes a whitelist indication field, and when the whitelist indication field is the fourth value, the whitelist indication field is used to indicate the number of letters The field is the number of letters sent to the first terminal by a second terminal not in the whitelist; in the case where the whitelist indication field is the fifth value, the whitelist indication field is used to indicate that the number of letters is in the whitelist The number of letters sent by the second terminal to the first terminal, or the number of letters sent by all the second terminals to the first terminal.
  • the first terminal after receiving the mailbox profile query result message, the first terminal knows how to parse the number of letters field in the mailbox profile query result message.
  • the mailbox profile query result message further includes a message type indication field, and when the message type indication field is the sixth value, the message type indication field is used to indicate that the mailbox
  • the profile query result message is used to inquire about the number of letters sent from one or more second terminals to the first terminal; when the message type indication field is the seventh value, the message type indication field is used to indicate the mailbox profile query result report
  • the text is used for downloading the contents of letters sent from one or more second terminals to the first terminal.
  • the first terminal after receiving the mailbox profile query result message, the first terminal can determine the type of the mailbox profile query result message according to the message type indication field in the mailbox profile query result message. Therefore, the first terminal can correctly parse the mailbox profile query result message.
  • the whitelist indication field in the mailbox profile query result message is the fourth value.
  • the message type indication field in the mailbox profile query result message is the sixth value; in the case of the service type in the mailbox profile query request message as the first value or the third value, the message type in the mailbox profile query result message
  • the white list indication field is the fifth value, and the message type indication field in the mailbox profile query result message is the sixth value.
  • the mailbox profile query result message further includes an encryption indication field, and the encryption indication field may be used to indicate whether the mailbox profile query result message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • the mailbox profile query result message further includes a compression indication field, which may be used to indicate whether the mailbox profile query result message is compressed.
  • the length of the compression indication field may be 2 bits.
  • the mailbox profile query result message further includes an application layer authentication code field, and the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits.
  • the first terminal is specifically used for:
  • the mailbox overview query request message is sent to the message data aggregation MDCP layer of the first terminal, as the MDCP service data unit SDU of the MDCP layer;
  • MDCP SDU After the MDCP SDU is added to the padding data and the redundancy length indication field, it is split into one or more MDCP protocol data unit PDUs; one or more MDCP PDUs include the first MDCP PDU;
  • the SLC SDU is split into one or more SLC PDUs; the first terminal sends the one or more SLC PDUs to the Beidou network equipment.
  • the first terminal is specifically used for:
  • the MDCP layer After the MDCP layer removes the padding data and the redundant length indication field from the MDCP SDU, it is uploaded to the APP layer as a mailbox profile query result message.
  • the first terminal is further configured to: parse out the number of letters of the first terminal sent by one or more second terminals in the number of letters field in the mailbox overview query result message ;Display the number of letters sent by one or more second terminals on the display screen of the first terminal.
  • Beidou network equipment is specifically used for:
  • the MDCP layer After the MDCP layer removes the padding data and redundant length indication fields from the MDCP SDU, it is uploaded to the APP layer as a mailbox profile query request message.
  • the Beidou network device is specifically configured to: query the short message center for one or more messages sent by the second terminal to the first terminal according to the mailbox profile query request message. The number of letters; based on the number of letters sent by one or more second terminals to the first terminal, a mailbox profile query result message is generated.
  • Beidou network equipment is specifically used for:
  • the mailbox overview query result message is sent to the Beidou network device to collect the message data at the MDCP layer, and serve as the MDCP service data unit SDU of the MDCP layer;
  • MDCP SDU After the MDCP SDU is added to the padding data and the redundant length indication field, it is split into one or more MDCP protocol data unit PDUs; one or more MDCP PDUs include the second MDCP PDU;
  • the SLC SDU is split into one or more SLC PDUs; the Beidou network equipment sends the one or more SLC PDUs to the first terminal.
  • the Beidou network device may also execute the method in any possible implementation manner of the foregoing second aspect.
  • the terminal may further execute the method in any possible implementation manner of the foregoing first aspect.
  • the present application provides a communication device, including one or more processors, one or more memories, and a transceiver.
  • the transceiver, the one or more memories are coupled with the one or more processors, the one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the The communication device executes the method in any possible implementation manner of the foregoing first aspect.
  • the communication device may be a terminal or other product form equipment.
  • the present application provides a communication device, including one or more processors, one or more memories, and a transceiver.
  • the transceiver, the one or more memories are coupled to the one or more processors, the one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the The communication device executes the method in any possible implementation manner of the second aspect above.
  • the communication device may be Beidou network equipment, or any network element or a combination of multiple network elements in the Beidou network equipment.
  • the present application provides a computer storage medium, including computer instructions.
  • the computer instructions When the computer instructions are run on the computer, the computer is made to execute the method in any possible implementation manner of the first aspect above.
  • the present application provides a computer storage medium, including computer instructions.
  • the computer instructions When the computer instructions are run on the computer, the computer is made to execute the method in any possible implementation manner of the second aspect above.
  • the present application provides a computer program product, which, when running on a computer, causes the computer to execute the method in any possible implementation manner of the first aspect above.
  • the present application provides a computer program product, which, when the computer program product is run on a computer, causes the computer to execute the method in any possible implementation manner of the second aspect above.
  • the present application provides a chip or a chip system, which is applied to a terminal, and includes a processing circuit and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processing circuit, and the processing circuit is used to run the code instructions To execute the method in any possible implementation manner of the first aspect above.
  • FIG. 1 is a schematic structural diagram of a Beidou communication system 10 provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a Beidou communication protocol layer provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a protocol encapsulation framework for inbound data of a Beidou communication system 10 provided in an embodiment of the present application;
  • FIG. 4 is a schematic diagram of a protocol analysis framework for inbound data of a Beidou communication system 10 provided by an embodiment of the present application;
  • FIG. 5 is a schematic diagram of a protocol encapsulation framework for outbound data of a Beidou communication system 10 provided by an embodiment of the present application;
  • FIG. 6 is a schematic diagram of a protocol analysis framework for outbound data of a Beidou communication system 10 provided by an embodiment of the present application;
  • FIG. 7 is a schematic flowchart of a method for inquiring about a mailbox profile in a Beidou communication system provided by an embodiment of the present application.
  • FIGS. 8A-8C are schematic diagrams of a set of user interfaces provided by the embodiment of the present application.
  • FIG. 8D is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • first and second are used for descriptive purposes only, and cannot be understood as implying or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, the “multiple” The meaning is two or more.
  • a Beidou communication system 10 provided in the embodiment of the present application is introduced below.
  • FIG. 1 shows a schematic diagram of a Beidou communication system 10 in an embodiment of the present application.
  • the Beidou communication system 10 may include a terminal 100, a Beidou short message satellite 21, a Beidou network device 200, and a short message service center (short message service center, SMSC) 41.
  • a short message service center short message service center 41.
  • the terminal 100 is under the Beidou network, that is, the Beidou communication module in the terminal 100 is turned on, and the terminal 100 does not reside under the cellular network.
  • the terminal 100 may query the number of short messages sent to the terminal 100 by one or more terminals residing in the cellular network (for example, the terminal 300 shown in FIG. 1 ) through the Beidou network device 200 .
  • the terminal 100 may send a mailbox profile query request to the Beidou network device 200, and the mailbox profile query request is used to query the Beidou network device 200 about the number of letters received by the terminal 100.
  • the Beidou network device 200 may query the short message center 41 for the number of letters sent to the terminal 100 by other terminals. Then, the Beidou network device 200 can reply the query result to the terminal 100 , that is, the number of letters received by the terminal 100 .
  • Beidou network equipment 200 may include Beidou ground receiving station 31, signal receiving and processing equipment 32, signal processing center 33, Beidou ground transmitting station 35, signal sending and processing equipment 36, operation control center 37 and Beidou short message fusion communication platform34.
  • the signal processing center 33 and the operation control center 37 may be referred to as a Beidou central station.
  • the signal receiving and processing device 32, the signal processing center 33, the signal sending and processing device 36, and the operation control center 37 may be referred to as a Beidou central station.
  • the Beidou ground receiving station 31 may receive the query mailbox profile request sent by the terminal 100 forwarded by the Beidou short message satellite 21 .
  • the Beidou ground receiving station 31 can send the query mailbox profile request to the signal receiving and processing device 32 , and then the signal receiving and processing device 32 can send the message to the signal processing center 33 .
  • the signal processing center 33 and the Beidou short message fusion communication platform 34 can analyze the query mailbox overview request forwarded by the Beidou short message satellite 21 according to the protocol, and forward the content of the parsed query mailbox overview request to the short message center (SMSC) 41 .
  • the short message center 41 can search for the number of letters sent to the terminal 100 by other terminals according to the content of the mailbox profile query request.
  • the terminal 100 can also send data to the terminal 300 through the Beidou network device 200 .
  • the Beidou network device 200 can send data to the terminal 100 through the Beidou short message satellite 21 .
  • the terminal 100 queries the mailbox profile, and the Beidou network device 200 may return the query result of the mailbox profile to the terminal.
  • the operation control center 37 can send the query result of the mailbox profile to the signal transmission processing device 36, and then the signal transmission processing device 36 can send the query result of the mailbox profile to the Beidou ground transmitting station 35, and the Beidou ground transmitting station 35 sends the mailbox
  • the general query result is sent to the Beidou short message satellite 21 , and then sent to the terminal 100 after being relayed by the Beidou short message satellite 21 .
  • the query result of the mailbox profile in the operation control center 37 may also be obtained from the signal processing center 33 .
  • the Beidou ground transmitting station 35 and the Beidou ground receiving station 31 can be composed of one or more devices with sending function and one or more devices with receiving function respectively, or can be one or more devices with sending function and receiving function Multiple devices, not limited here.
  • the terminal 100 can also query whether there is a terminal under the cellular network to send a letter to the terminal 100, and can The number of letters sent to the terminal 100 by terminals under other cellular networks is known.
  • the data sent to the terminal 100 such as messages, or short messages, or short messages, emails, etc.
  • the letter may refer to user A (for example, the terminal 100 shown in FIG. 1 ) receiving other terminals (for example, the The terminal 300 shown) sends the short message to user A.
  • Mailbox profile query refers to: the user sends a query message to the Beidou network device 200, and the Beidou short message integrated communication platform 34 in the Beidou network device 200 receives the query message.
  • the query message carries query information, and the query information indicates the number information of the sender of the short message that the user needs to query.
  • the mailbox profile refers to the mailbox profile information that the user receives returned from the Beidou network device 200 .
  • the mailbox overview information is not the contents of the specific letters in the mailbox, but the number of letters of the sender corresponding to the query information. For example, user A inquires whether his parents have any messages sent to him, and the returned mailbox overview information is the number of letters sent by his parents.
  • FIG. 2 shows a schematic diagram of layers of a Beidou communication protocol of a Beidou communication system 10 in an embodiment of the present application.
  • the Beidou communication protocol layer can include an application (application layer protocol, APP) layer, a message data convergence (message data convergence protocol, MDCP) layer, a satellite link control layer (satellite link control protocol, SLC) layer and Physical (physical layer protocol, PHY) layer.
  • APP application layer protocol
  • MDCP message data convergence protocol
  • SLC satellite link control protocol
  • PHY Physical (physical layer protocol, PHY) layer.
  • the Beidou ground receiving station 31 and the Beidou ground transmitting station 35 can be used for the Beidou network device 200 to process data at the PHY layer.
  • the signal receiving and processing device 32 , the signal sending and processing device 36 , the signal processing center 33 , and the operation control center 37 can be used for the Beidou network device 200 to process data at the SLC layer and the MDCP layer.
  • the Beidou short message fusion communication platform 34 can be used to process data at the APP layer.
  • the dedicated terminal can receive short messages (hereinafter referred to as letters) forwarded via Beidou satellites in the state of no network.
  • the specific process is that when the dedicated terminal captures and tracks the Beidou signal, it initiates a start-up report.
  • the short message receiving and processing system station receives the message, if there is a cached message of the user (hereinafter referred to as a letter), it will directly send the user's message.
  • the Beidou network device 200 decides whether to delete the cached letters.
  • the letters cached here are managed through the dedicated server built by the Beidou system, and the network elements of operators without cells directly participate in the management, and the scope of use is limited.
  • the public civilian terminal mailbox mechanism for Beidou satellite short messages is still blank at present.
  • the embodiment of this application makes a new design for the data transmission protocol in the Beidou communication system, which mainly includes the mailbox overview query part.
  • the data sent by the terminal 100 to the Beidou network device 200 may be called inbound, and the data sent by the terminal 100 to the Beidou network device 200 may be called inbound data.
  • the data sent by the Beidou network device 200 to the terminal 100 may be called outbound, and the data sent by the Beidou network device 200 to the terminal 100 may be called outbound data.
  • the following describes the encapsulation process of the mailbox profile query request by the terminal 100 when the terminal 100 sends the mailbox profile query request to the Beidou network device 200 . And when the Beidou network device 200 receives the mailbox profile query request, the Beidou network device 200 parses the mailbox profile query request.
  • a protocol encapsulation framework for inbound data of the Beidou communication system 10 provided in the embodiment of the present application is introduced below.
  • FIG. 3 shows a schematic diagram of a protocol encapsulation architecture of inbound data of the Beidou communication system 10 provided in the embodiment of the present application.
  • the Beidou message transmission protocol layer on the terminal 100 can be divided into application layer protocol (application layer protocol, APP), message data convergence layer (message data convergence protocol, MDCP), satellite link control layer (satellite link control protocol, SLC) and physical layer (physical layer protocol, PHY).
  • application layer protocol application layer protocol
  • MDCP message data convergence layer
  • MDCP message data convergence protocol
  • SLC satellite link control layer
  • PHY physical layer protocol
  • the workflow of the Beidou message transmission protocol on the terminal 100 can be as follows:
  • the terminal 100 can encapsulate the original data (for example, a mailbox profile query request) into an application layer message, and then the terminal 100 can send the application layer message to the MDCP layer through an interlayer interface.
  • the format of the application layer message will be introduced in detail below, and will not be repeated here.
  • the terminal 100 can obtain the application layer message sent by the APP layer through the interlayer interface, and use the application layer message as an MDCP service data unit (service data unit, SDU).
  • the terminal 100 can add padding to a specified length at the end of the MDCP SDU, and add a redundant length indication field at the head of the MDCP SDU.
  • the redundant length indication field may be used to indicate the length of the padding data.
  • the terminal 100 can split the padding data and the MDCP SDU after adding the redundant length indication field into one or more fixed-length MDCP segment data (M_segement), and add a follow-up indication to the header of each MDCP segment data field to get the MDCP protocol data unit (protocol data unit, PDU), that is, the MDCP PDU includes the M_segment and the successor indication field.
  • the follow-up indication field can be used to indicate that the current MDCP PDU is the initial MDCP PDU or the middle MDCP PDU or the last MDCP PDU of multiple MDCP PDUs sent continuously; or it is an MDCP PDU sent separately.
  • the terminal 100 can obtain the MDCP PDU sent by the MDCP layer through the interlayer interface as the SLC SDU.
  • the terminal 100 can segment the SLC SDU into one or more (up to 4) fixed-length SLC segment data (S_segement), and add frame header information to each S_segment header to obtain the SLC PDU.
  • the frame header information includes a service data unit alternated indicator (service data unit alternated indicator, SAI) field, a frame total number field, and a frame sequence number field.
  • SAI service data unit alternated indicator
  • the SAI field can be used to indicate whether the SLC PDU belongs to a SLC SDU that has not been sent.
  • the total number of frames field can be used to indicate the total number of SLC PDUs included in the SLC SDU to which the SLC PDU belongs.
  • the frame sequence number field can be used to indicate the sequence number of the SLC PDU in the SLC SDU to which it belongs.
  • the terminal 100 can obtain the SLC PDU issued by the SLC layer through the interlayer interface, as a code block (code block) of the PHY layer, and add a synchronization header at the head of the code block, and add a calibration at the end of the code block. Parity field.
  • a cyclic redundancy check (cyclic redundancy check, CRC) may be used to check the code block, therefore, the check digit field may include a CRC code.
  • the terminal 100 can code the code block and the parity bit field (for example, polar coding) to obtain coded data (coded data), and then insert a pilot into the coded data to obtain pilot coded data (pilot+data).
  • the terminal 100 sequentially modulates the synchronization header and pilot coded data through the underlying hardware to obtain modulated data (modulated data).
  • modulated data modulated data
  • the terminal 100 may perform spectrum spreading on the modulated data to obtain spread spectrum modulated data (spread+modulated data).
  • the terminal 100 can send the spread-spectrum modulated data to the Beidou short message satellite 21, and then forward it to the Beidou network device 200 via the Beidou short message satellite 21.
  • a protocol analysis framework for inbound data of the Beidou communication system 10 provided in the embodiment of the present application is introduced below.
  • FIG. 4 shows a schematic diagram of a protocol analysis architecture of inbound data of the Beidou communication system 10 provided in the embodiment of the present application.
  • the Beidou short message transmission protocol layer of the Beidou network device 200 can be divided into an application layer (application layer protocol, APP), a message data convergence layer (message data convergence protocol, MDCP), and a satellite link control layer ( Satellite link control protocol, SLC) and physical layer (physical layer protocol, PHY).
  • Beidou network equipment 200 may include Beidou ground receiving station 31, signal receiving and processing equipment 32, signal processing center 33, Beidou ground transmitting station 35, signal sending and processing equipment 36, operation control center 37 and Beidou short message fusion communication platform34.
  • the Beidou ground receiving station 31 and the Beidou ground transmitting station 35 can be used for the Beidou network device 200 to process data at the PHY layer.
  • the signal receiving and processing device 32 , the signal sending and processing device 36 , the signal processing center 33 , and the operation control center 37 can be used for the Beidou network device 200 to process data at the SLC layer and the MDCP layer.
  • the Beidou short message fusion communication platform 34 can be used to process data at the APP layer.
  • the workflow of the Beidou short message transmission protocol layer of the Beidou network device 200 can be as follows:
  • the Beidou network device 200 can obtain the modulated and spread-spectrum coded pilot data sent by the terminal 100 .
  • the Beidou network device 200 may despread the received spread spectrum modulated data (spread+modulated data) to obtain modulated data (modulated data). Then, the Beidou network device 200 can demodulate the modulated data to obtain pilot coded data (pilot+data). Next, the Beidou network device 200 removes the pilot information in the pilot coded data to obtain coded data (code data). Then, the Beidou network device 200 can decode the coded data, and verify the integrity of the code block (code block) through the check data in the check bit field. If it is complete, the Beidou network device 200 can extract the code block (code block), and present it to the SLC layer through the interlayer interface as the SLC PDU of the SLC layer.
  • the Beidou network device 200 can splice the SLC PDUs belonging to the same SLC SDU into one SLC SDU based on the frame header information of the SLC PDU.
  • the Beidou network device 200 can present the SLC SDU to the MDCP layer through the interlayer interface as the MDCP PDU of the MDCP layer.
  • Beidou network device 200 can splice all MDCP PDUs belonging to the same MDCP SDU into one MDCP SDU.
  • the Beidou network device 200 can present the MDCP SDU to the APP layer through the interlayer interface as an application layer message received by the APP layer.
  • the Beidou network device 200 can decrypt and decompress the application layer message based on the message header of the application layer message to obtain the original data.
  • the original data may be a mailbox profile query request.
  • the Beidou network device 200 may reply to the terminal 100 with the query result of the mailbox profile.
  • the encapsulation process of the query result of the mailbox profile by the Beidou network device 200 when the Beidou network device 200 sends the query result of the mailbox profile to the terminal 100 is introduced below.
  • the terminal 100 analyzes the query result of the mailbox profile.
  • a protocol encapsulation framework for outbound data of the Beidou communication system 10 provided in the embodiment of the present application is introduced below.
  • FIG. 5 shows a schematic diagram of a protocol encapsulation architecture of outbound data of the Beidou communication system 10 provided in the embodiment of the present application.
  • the Beidou short message transmission protocol layer of the Beidou network device 200 can be divided into an application layer (application layer protocol, APP), a message data convergence layer (message data convergence protocol, MDCP), and a satellite link control layer ( Satellite link control protocol, SLC) and physical layer (physical layer protocol, PHY).
  • Beidou network equipment 200 may include Beidou ground receiving station 31, signal receiving and processing equipment 32, signal processing center 33, Beidou ground transmitting station 35, signal sending and processing equipment 36, operation control center 37 and Beidou short message fusion communication platform34.
  • the Beidou ground receiving station 31 and the Beidou ground transmitting station 35 can be used for the Beidou network device 200 to process data at the PHY layer.
  • the signal receiving and processing device 32 , the signal sending and processing device 36 , the signal processing center 33 , and the operation control center 37 can be used for the Beidou network device 200 to process data at the SLC layer and the MDCP layer.
  • the Beidou short message fusion communication platform 34 can be used to process data at the APP layer.
  • the workflow of the Beidou short message transmission protocol in the Beidou network device 200 can be as follows:
  • the Beidou network device 200 can encapsulate the original data (for example, the query result of the mailbox overview) into an application layer message. Then, the Beidou network device 200 can send the application layer message to the MDCP layer through the interlayer interface.
  • the format of the application layer message will be introduced in detail below, and will not be repeated here.
  • the Beidou network device 200 divides the MDCP SDU into multiple MDCP PDUs at the MDCP layer, and the Beidou network device 200 can transmit the multiple MDCP PDUs to the SLC of the Beidou network device 200 layer.
  • the Beidou network device 200 can obtain the application layer message sent by the APP layer through the interlayer interface, and use the application layer message as an MDCP SDU.
  • Beidou network device 200 can split an MDCP SDU into one or more fixed-length MDCP segment data (M_segement), and add a follow-up indication field to the header of each MDCP segment data to obtain an MDCP PDU , that is, the MDCP PDU includes M_segment and successor indication fields.
  • M_segement fixed-length MDCP segment data
  • the follow-up indication field can be used to indicate that the current MDCP PDU is the initial MDCP PDU or the middle MDCP PDU or the last MDCP PDU of multiple MDCP PDUs sent continuously; or it is an MDCP PDU sent separately.
  • the Beidou network device 200 can obtain the MDCP PDU sent by the MDCP layer through the interlayer interface as the SLC SDU.
  • the Beidou network device 200 can segment the SLC SDU into one or more (up to 4) fixed-length SLC segment data (S_segement), and add frame header information to each S_segment header to obtain the SLC PDU .
  • the Beidou network device 200 can obtain the SLC PDU delivered by the SLC layer through the interlayer interface.
  • the Beidou network device 200 can obtain SLC PDUs of one user or multiple users from the SLC layer.
  • the Beidou network device 200 can splice the SLC PDUs of multiple users together, add the frame header of the physical frame (such as the version number) as the code block (code block) of the PHY layer, and add a check digit at the end of the code block (for example, cyclic redundancy check (cyclic redundancy check, CRC) code), and encode the code block and CRC code (for example, polar encoding), the encoded physical frame plus the reserved segment can form a fixed-length physical time
  • the coded data of the message branch (S2C_d branch) of the slot can form a fixed-length physical time
  • the coded data of the message branch (S2C_d branch) of the slot can form a fixed-length physical time
  • the Beidou network device 200 can put multiple SLC PDUs of a user into different physical frames respectively. Then, the Beidou network device 200 composes the coded data of the S2C_d branch and the pilot information of the pilot branch (S2C_p branch) into pilot coded data, that is, outbound data. The Beidou network device 200 can send the outbound data to the Beidou short message satellite 21 , and forward it to the terminal 100 via the Beidou short message satellite 21 .
  • the pilot information of the S2C_p branch is related to the satellite beam.
  • the pilot information of the S2C_p branch is also known and does not need to be decoded.
  • the coded data of the S2C_d branch needs to be decoded.
  • a protocol analysis framework for outbound data of the Beidou communication system 10 provided in the embodiment of the present application is introduced below.
  • FIG. 6 shows a schematic diagram of a protocol analysis architecture of outbound data of the Beidou communication system 10 provided in the embodiment of the present application.
  • the Beidou short message transmission protocol layer of terminal 100 can be divided into application layer protocol (application layer protocol, APP), message data convergence layer (message data convergence protocol, MDCP), satellite link control layer (satellite link control protocol, SLC) and physical layer (physical layer protocol, PHY).
  • application layer protocol application layer protocol
  • MDCP message data convergence layer
  • MDCP message data convergence protocol
  • SLC satellite link control layer
  • PHY physical layer protocol
  • the workflow of the Beidou short message transmission protocol layer of the terminal 100 can be as follows:
  • the terminal 100 can obtain the modulated and spread-spectrum coded pilot data sent by the Beidou network device 200 .
  • the terminal 100 may despread the received spread spectrum modulated data (spread+modulated data) to obtain modulated data (modulated data). Then, the terminal 100 may demodulate the modulated data to obtain pilot coded data (pilot+data). Next, the terminal 100 may remove the pilot information in the pilot coded data to obtain coded data (code data). Then, the terminal 100 can decode the coded data, and verify the integrity of the code block (code block) through the check data in the check bit field. If it is complete, the terminal 100 can extract the code block (code block), and present it to the SLC layer through the interlayer interface as the SLC PDU of the SLC layer.
  • the pilot coded data is the outbound data sent by the Beidou network device 200, and the outbound data is composed of the coded data of the S2C_d branch and the pilot information of the pilot branch (S2C_p branch).
  • the terminal 100 can splice the SLC PDUs belonging to the same SLC SDU into one SLC SDU based on the frame header information of the SLC PDU.
  • the terminal 100 can present the SLC SDU to the MDCP layer through the interlayer interface as the MDCP PDU of the MDCP layer.
  • the terminal 100 can splice all MDCP PDUs belonging to the same MDCP SDU into one MDCP SDU.
  • the terminal 100 can present the MDCP SDU to the APP layer through the interlayer interface as an application layer message received by the APP layer.
  • the terminal 100 may decrypt and decompress the application layer message based on the message header of the application layer message to obtain original data.
  • a mailbox profile query method in the Beidou communication system may include: the terminal 100 may send a mailbox profile query request message to the Beidou network device 200, and the mailbox profile query request message includes a service Type field, message ID field; the service type field is used to indicate the service type of the mailbox profile query request message, and the message ID field is used to indicate the ID of the last successfully received letter by the terminal.
  • the terminal receives the mailbox overview query result message sent by the Beidou network device 200;
  • the mailbox overview query result message contains a whitelist indication field and a letter quantity field;
  • the whitelist indication field is used for how the terminal 100 parses the letter quantity field;
  • the letter quantity field is used for In order to indicate the number of letters sent by one or more target terminals to the terminal 100, in this way, the user can also check whether other users have sent letters to the terminal 100 under the Beidou network.
  • FIG. 7 exemplarily shows a schematic flow chart of a method for inquiring about a mailbox overview in the Beidou communication system provided by an embodiment of the present application.
  • a method for inquiring about mailboxes in the Beidou communication system provided in the embodiment of the present application may include the following steps:
  • the terminal 100 generates a mailbox profile query request message based on user operations, and the mailbox profile query request message is used to query the number of letters sent to the terminal 100 by one or more target terminals.
  • the terminal 100 is under the Beidou network, that is, the terminal 100 is in a scenario without a cellular network and a wireless local area network, the terminal 100 is not camped on the cellular network, and the Beidou communication module in the terminal 100 is turned on.
  • the terminal 100 can communicate with the Beidou network device 200 through the Beidou communication module.
  • the terminal 100 can query the number of letters sent to the terminal 100 by one or more target terminals through the Beidou network.
  • the identifiers of one or more target terminals may exist in the whitelist configured for the terminal 100 , or the identifiers of one or more target terminals may not exist in the whitelist configured for the terminal 100 .
  • the terminal 100 may be referred to as a first terminal, and one or more target terminals may be referred to as one or more second terminals.
  • a white list may be configured in the terminal 100, and the white list includes identifiers of N terminals associated with the terminal 100 and serial numbers of the identifiers in the whitelist.
  • the identification of the N terminals may be the mobile phone number of each of the N terminals.
  • the white list configured by the terminal 100 may be stored in the terminal 100 and the Beidou network device 200 (for example, the Beidou short message fusion communication platform 34).
  • the whitelist configured by the terminal 100 may also be stored in the server (for example, the short message center 41 shown in FIG. In the embodiment of the present application, this is not limited.
  • the terminal identifier may be the terminal's mobile phone number, registration number, international mobile equipment identity (international mobile equipment identity, IMEI), international mobile subscriber identification number (international mobile subscriber identification number, IMSI), mobile Mobile subscriber international integrated service digital network number (MSISDN).
  • IMEI international mobile equipment identity
  • IMSI international mobile subscriber identification number
  • MSISDN mobile Mobile subscriber international integrated service digital network number
  • the user of the terminal 100 wants to inquire about the number of letters sent by the target terminal to the terminal 100, the user may click on a control on the terminal 100 for inquiring about a mailbox profile. Based on the user clicking on the control on the terminal 100 for querying the mailbox profile, the terminal 100 may generate a mailbox profile query request message.
  • the terminal 100 may query the number of letters sent to the terminal 100 by a target terminal, and may also query the number of letters sent to the terminal 100 by target terminals under one or more cellular networks.
  • the user can determine the number of letters sent to the terminal 100 by the terminal 100, for example, the user can Input the serial number of the target terminal A in the white list in the terminal 100 , or the user can also input the mobile phone number of the target terminal A in the terminal 100 . Then, the user can click on the control in the terminal 100 for querying the overview of the mailbox.
  • the target terminal A's identity for example, mobile phone number
  • the user can determine the number of letters sent to the terminal 100 by the terminal 100, for example, the user can Input the serial number of the target terminal A in the white list in the terminal 100 , or the user can also input the mobile phone number of the target terminal A in the terminal 100 . Then, the user can click on the control in the terminal 100 for querying the overview of the mailbox.
  • a target terminal identified in the whitelist may be referred to as a target terminal in the whitelist, and a target terminal identified not in the whitelist may be referred to as a target terminal not in the whitelist.
  • the user can determine in the terminal 100 to query the number of letters sent by the target terminal B to the terminal 100, for example, the user The mobile phone number of the target terminal B can be input in the terminal 100 . Then, the user can click on the control in the terminal 100 for querying the overview of the mailbox.
  • the identity of the target terminal B for example, a mobile phone number
  • the user can click on the control in the terminal 100 for querying the overview of the mailbox.
  • control 1 can be used to query the number of letters sent to the terminal 100 by one or more target terminals in the white list.
  • Control 2 is used to query the number of letters sent by the terminal 100 from a single target terminal not in the white list.
  • Control 3 is used to query all target terminals, that is, the number of letters sent to terminal 100 by all target terminals in the white list and target terminals not in the white list.
  • the format of the mailbox profile query request message may be as shown in Table 1 below.
  • the mailbox overview query request message may include a return receipt indication field, a service type field, an encryption indication field, a compression indication field, an application layer authentication code field, a sender ID field, and a message ID field. It can be understood that the specific fields contained in the mailbox overview query request message in the embodiment of the present application and the sequence of the fields are not limited. For example, when the mailbox overview query request message does not require an application layer receipt by default, the mailbox overview query request message may not include a receipt indication field.
  • Table 2 exemplarily shows the lengths corresponding to each field in Table 1 and specific descriptions.
  • the receipt indication field may be used to indicate whether the receiving device (for example, the Beidou network device 200 ) of the mailbox overview query request message needs to reply to the terminal 100 with an application layer receipt.
  • the application layer receipt can be used to indicate whether the receiving device has successfully received the mailbox profile query request message.
  • the length of the receipt indication field may be 1 bit.
  • the return receipt indication field is a value D1 (for example, 0)
  • the return receipt indication field is a value D2 (for example, 1)
  • D1 for example, 0
  • D2 for example, 1
  • the service type field may be used to indicate the service type of the mailbox profile query request message.
  • the service types of messages may include general messages, mailbox services (including mailbox profile query service and letter download service) and so on.
  • the length of the service type field may be 3 bits. It can be understood that, the embodiment of the present application does not limit the length of the service type field. When there are more and more types of business types, the length of the field of the business type can be longer and longer. In this embodiment of the present application, the length of the service type field is 3 bits as an example for illustration. When the service type field is 000, it indicates that the service type of the mailbox profile query request message is a general message.
  • the service type field is 001, it indicates that the service type of the mailbox profile query request message can be the mailbox profile query service in the mailbox service, and the mailbox profile query request message is only sent to the terminal 100 by querying the target terminal in the white list number of letters.
  • the service type field is 010, it indicates that the service type of the mailbox profile query request message is the mailbox profile query service in the mailbox service, specifically querying all target terminals (including target terminals in the whitelist and targets in the non-whitelist terminal) the number of letters sent to the terminal 100.
  • the service type field is 011
  • it indicates that the service type of the mailbox profile query request message is the mailbox profile query service in the mailbox service, specifically, it can be a letter sent to the terminal 100 by a target terminal in a separate non-white list quantity.
  • the service type field is 100, it indicates that the service type of the mailbox overview query request message is the letter download service in the mailbox service, specifically, it can be downloading letters sent to the terminal 100 by the target terminal in the white list.
  • the service type field is 101, it indicates that the service type of the mailbox overview query request message is the letter download service in the mailbox service, specifically, the download can be letters sent to the terminal user by all target terminals.
  • the service type field is 110, it indicates that the service type of the mailbox overview query request message is used for letter download service in the mailbox service, specifically, it can be downloading letters sent to the terminal user by a separate non-whitelist user.
  • "111" is a reserved field.
  • the mailbox profile query request message may not include the sender ID field.
  • the encryption indication field may be used to indicate whether the mailbox profile query request message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • D3 for example, 00
  • the compression indication field may be used to indicate whether the mailbox overview query request message is compressed.
  • the length of the compression indication field may be 2 bits.
  • D4 for example, 00
  • the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits. It can be understood that, the embodiment of the present application does not limit the length of the application layer authentication code field.
  • the sender ID field may be used to indicate the identity of the target terminal for which the terminal 100 will inquire about the number of letters sent to the terminal 100 . If the target terminal is in the whitelist configured by the terminal 100, then the sender ID field is a whitelist bitmap. If the target terminal is not in the white list configured by the terminal 100, then the ID field of the sender is the identifier of the target terminal (for example, a mobile phone number).
  • the whitelist includes identifiers of N target terminals, so the length of the whitelist bitmap may be Nbit. For example, if the whitelist contains 10 target terminal identifiers, the length of the whitelist bitmap may be 10 bits.
  • N is an integer, and the specific value of N is not limited. The following takes N equal to 10 as an example for illustration.
  • the white list configured in the terminal 100 may be as shown in Table 3 below.
  • the white list configured by the terminal 100 may include identities of 10 target terminals and serial numbers corresponding to the 10 target terminals. It can be understood that the whitelists set by different users may be different.
  • the whitelists shown in Table 3 above are only examples, and this embodiment of the present application does not limit the identifiers and serial numbers of specific terminals in the whitelists.
  • the white list may be shown in Table 4 or Table 5 below.
  • the whitelist bitmap may occupy 10 bits, wherein the identifier of each target terminal in the whitelist occupies 1 bit.
  • the identifier of the target terminal whose sequence number is 1 in the whitelist may occupy the most significant bit (most significant bit, MSB) in the 10 bits, that is, bit9.
  • the identity of the target terminal whose serial number is 10 in the white list can occupy the least significant bit (least significant bit, LSB) in 10 bits, namely bit0.
  • the identifier of the target terminal whose serial number is 2 in the whitelist may occupy bit8 of the 10 bits.
  • the identifier of the target terminal whose serial number is 3 in the white list may occupy bit7 in 10 bits.
  • the identifier of the target terminal whose serial number is 4 in the white list may occupy bit6 in 10 bits.
  • the identifier of the target terminal whose serial number is 5 in the white list may occupy bit 5 of the 10 bits.
  • the identifier of the target terminal whose serial number is 6 in the white list may occupy bit4 in 10 bits.
  • the identifier of the target terminal whose sequence number is 7 in the white list may occupy bit3 in 10 bits.
  • the identifier of the target terminal whose sequence number is 8 in the white list may occupy bit 2 of the 10 bits.
  • the identifier of the target terminal whose serial number is 9 in the white list may occupy bit 1 of the 10 bits. For example, if the user wants to query the number of letters sent to the terminal 100 by the target terminal whose serial number is 1 in the whitelist, then the whitelist bitmap that the terminal 100 fills in the sender ID field may be "1000000000".
  • the identifier of the target terminal whose serial number is 10 in the whitelist may occupy the MSB of 10 bits, that is, bit9. Then the identifier of the target terminal whose sequence number is 1 in the white list may occupy the LSB of 10 bits, that is, bit0. The identifier of the target terminal whose serial number is 9 in the white list may occupy bit8 in 10 bits. The identifier of the target terminal whose serial number is 8 in the white list may occupy bit7 in 10 bits. The identifier of the target terminal whose serial number is 7 in the white list may occupy bit6 of the 10 bits.
  • the identifier of the target terminal whose serial number is 6 in the white list may occupy bit 5 of the 10 bits.
  • the identifier of the target terminal whose serial number is 5 in the white list may occupy bit4 in 10 bits.
  • the identifier of the target terminal whose serial number is 4 in the white list may occupy bit3 in 10 bits.
  • the identifier of the target terminal whose sequence number is 3 in the white list may occupy bit 2 of the 10 bits.
  • the identifier of the target terminal whose serial number is 2 in the white list may occupy bit 1 of the 10 bits. For example, if the user wants to query the number of letters sent to the terminal 100 by the target terminal whose serial number is 1 in the whitelist, then the whitelist bitmap that the terminal 100 fills in the sender ID field may be "0000000001".
  • the sender ID field contains the mobile phone number of the target terminal, and the length of the sender ID field can be 44bit or 34bit, which is not specified here limited.
  • the user of the terminal 100 wants to query the number of letters sent to the terminal 100 by the target terminal whose mobile phone number is "158xxxxxxxx".
  • the target terminal is not in the white list of the terminal 100, then the terminal 100 can encode the mobile phone number "158xxxxxxxx" of the target terminal into 44-bit binary data and fill it in the sender ID field.
  • the terminal 100 may also compress and encode the mobile phone number "158xxxxxxxx" of the target terminal into 34-bit binary data and fill it into the sender ID field.
  • the message ID field may be used to indicate the ID of the first letter successfully received by the terminal 100 last time.
  • the first letter successfully received by the terminal 100 last time refers to the letter with the shortest interval between the receiving time and the time of clicking the control for inquiring the mailbox overview among the letters received by the terminal 100 before the user clicks the control for inquiring the mailbox overview.
  • the first letter is sent to the first terminal by the target terminal, specifically, the target terminal first sends the first letter to the short message center 41, and then, when the terminal 100 initiates letter downloading, the Beidou network device 200 can download the letter from the short message
  • the center 41 sends the first letter to the terminal 100 after obtaining it.
  • the Beidou network device 200 may receive a notification that the terminal 100 has successfully downloaded the first letter. After receiving the notification of the successful download of the first letter, the Beidou network device may notify the short message center 41 to delete the content of the first letter.
  • the short message center may retain the ID and sending time of the first letter.
  • the sending time of the first letter may refer to the time when the target terminal sends the first letter, that is, the time when the target terminal sends the first letter to the short message center 41 .
  • the ID field of the message may be an initial value (for example, 0).
  • the message ID field is an initial value, it indicates that the mailbox overview query request message is used to query the sending time of the first letter sent to the terminal 100 stored in the short message center 41, and one or more target terminals The number of letters sent to the terminal 100.
  • the terminal 100 segments the mailbox profile query request message into one or more satellite link control SLC layer protocol data units PDU1.
  • the terminal 100 may send the mailbox overview query request message to the MDCP layer through an interlayer interface.
  • the terminal 100 may segment the mailbox profile query request message into one or more MDCP PDUs at the MDCP layer.
  • the terminal 100 sends one or more MDCP PDUs to the SLC layer.
  • the terminal 100 can segment each MDCP PDU into one or more SLC PDU1 at the SLC layer.
  • the terminal 100 can fill in the identifier of the terminal 100 (for example, the mobile phone number of the terminal 100) in the user ID field in the frame header of each SLC PDU1.
  • the identifier of the terminal 100 for example, the mobile phone number of the terminal 100
  • the terminal 100 sends one or more SLC PDU1 to the Beidou network device 200.
  • the terminal 100 can send one or more SLC PDU1 to the Beidou network device 200. Specifically, the terminal 100 can send one SLC PDU1, and after receiving the reply from the Beidou network device 200 that the SLC PDU1 has been successfully received, then send the second SLC PDU1 to the Beidou network device 200. Optionally, the terminal 100 can also sequentially send one or more SLC PDU1s to the Beidou network device 200, and the Beidou network device 200 will reply to the terminal 100 that the SLC PDU1 has been successfully received after receiving all the SLC PDU1s.
  • the Beidou network device 200 receives one or more SLC PDU1.
  • the Beidou network device 200 can receive one or more SLC PDU1.
  • the Beidou network device 200 after the Beidou network device 200 has received one or more SLC PDU1s, it will reply to the terminal 100 that the one or more SLC PDU1s have been received.
  • the Beidou network device 200 can send an acknowledgment information feedback (Acknowledge, ACK) frame to the terminal 100, the ACK The frame is used to indicate that the Beidou network device 200 has not received all the SLC PDU1.
  • the terminal 100 can send the SLC PDU1 that the Beidou network device 200 has not collected to the Beidou network device 200 again.
  • the Beidou network device 200 can resolve the identifier of the terminal 100 (for example, mobile phone number 138xxxxxxxx) in the user ID field in the frame header of each SLC PDU1 at the SLC layer.
  • the Beidou network device 200 assembles one or more SLC PDU1 into a mailbox profile query request message.
  • the Beidou network device 200 can combine one or more SLC PDU1 sent by the terminal 100 into one or more SLC SDUs at the SLC layer. Then, the Beidou network device 200 uploads the one or more SLC SDUs to the MDCP layer as one or more MDCP PDUs of the MDCP layer. Then, the Beidou network device 200 can combine one or more MDCP PDUs into MDCP SDUs at the MDCP layer. Then, the Beidou network device 200 can upload the MDCP SDU to the APP layer as a mailbox profile query request message.
  • the Beidou network device 200 generates a mailbox profile query result message based on the mailbox profile query request message, and the mailbox profile query result message is used to indicate the number of letters sent to the terminal 100 by the target terminal.
  • the Beidou network device 200 may query the number of letters sent to the terminal 100 in the short message center 41 based on the mailbox profile query request message. Then, the Beidou network device 200 may generate a mailbox profile query result message from the query result, and the mailbox profile query result message is used to indicate the number of letters sent by the target terminal to the terminal 100 .
  • the Beidou network device 200 can Identify (for example, the mobile phone number 138xxxxxxxx of the terminal 100) and the message ID field in the mailbox profile query request message to resolve the ID (such as "1") of the letter received by the terminal 100 last time and go to the short message center 41 to query and remove Except for the letter whose letter ID is 1, the number of letters sent by all target terminals to the mobile phone number 138xxxxxxxx.
  • the Beidou network device 200 can parse out the letter from the SLC PDU1
  • the identifier of the terminal 100 for example, the mobile phone number 138xxxxxxxx of the terminal 100.
  • the Beidou network device 200 can also resolve the identification of the target terminal in the white list from the white list bitmap in the sender ID field of the mailbox profile query request message through the white list corresponding to the terminal 100 stored in the Beidou network device (for example, Mobile phone number "13xxxxxxxx0"), and the ID (for example, "1") of the letter received by the terminal 100 last time is parsed from the message ID field.
  • the Beidou network device 200 can query the short message center 41 in the short message center 41 according to the identification of the terminal 100, the identification of the target terminal in the white list, and the ID of the letter received by the terminal 100 last time, except for the letter whose letter ID is 1, the white list
  • the Beidou network device 200 can parse the information from the SLC PDU1
  • the identification of the terminal 100 for example, the mobile phone number of the terminal 100 138xxxxxxxx).
  • the Beidou network device 200 can also parse out the identification of the target terminal not in the whitelist (for example, the mobile phone number "158xxxxxxx0") from the sender ID field of the mailbox profile query request message, and parse out the terminal 100's last message ID field from the message ID field.
  • the ID of the received letter (for example, "1").
  • the Beidou network device 200 can query the short message center 41 in the short message center 41 according to the identification of the terminal 100, the identification of the target terminal in the white list, and the ID of the letter received by the terminal 100 last time, except for the letter whose letter ID is 1, the white list
  • the Beidou network device 200 also stores a letter whose letter ID is 1, then the Beidou network device 200 deletes the letter based on the message ID field in the mailbox profile query request message after receiving the mailbox profile query request message Letter with ID 1. In this way, the Beidou network device 200 will not repeatedly count the letters that have been sent, and send the same letter to the terminal 100 repeatedly.
  • the number of letters sent to the terminal 100 by different terminals may be stored in the short message center 41 .
  • the format of the number of letters sent from different terminals to the terminal 100 stored in the short message center 41 may be as shown in Table 6A below.
  • the short message center 41 may store recipients with different mobile phone numbers and the sending time of the letter.
  • the recipient is the mobile phone number 138xxxxxxxx (that is, the mobile phone number of the terminal 100 described above), and the sender in the white list corresponding to the mobile phone number 138xxxxxxxx (for example, mobile phone number 13xxxxxxxx0, mobile phone number 13xxxxxxxx1, etc.), non- The sender in the white list (for example, mobile phone number 158xxxxxxx0, mobile phone number 158xxxxxxx1, etc.), and the sending time of the letter, etc.
  • the recipient is the mobile phone number 136xxxxxxxx, and the sender in the white list corresponding to the mobile phone number 136xxxxxxxx (for example, the mobile phone number 159xxxxxxx0, the mobile phone number 159xxxxxxx1, etc.), the sender who is not in the white list (for example, the mobile phone number 166xxxxxxx0, the mobile phone number 166xxxxxxxx1, etc.), and the sending time of the letter, etc.
  • the following takes the mobile phone number "138xxxxxxxx" as an example for specific instructions.
  • 13xxxxxxxx0 is in the white list corresponding to the mobile phone number 138xxxxxxxx.
  • the mobile phone number 13xxxxxxxx0 sent two letters to the mobile phone number 138xxxxxxxx.
  • the sending time of the letters was "2021/1501 08:00:00" and "2021/1901 18:30:05".
  • 13xxxxxxxx1 is in the white list corresponding to the mobile phone number 138xxxxxxxx.
  • the mobile phone number 13xxxxxxxx1 sent two letters to the mobile phone number 138xxxxxxxx, and the sending times of the letters were "2021/1501 14:30:05" and "2021/1901 19:35:40".
  • 158xxxxxxx0 is not in the white list corresponding to the mobile phone number 138xxxxxxxx.
  • the mobile phone number 158xxxxxxxx0 sent a letter to the mobile phone number 138xxxxxxxx, and the sending time of the letter was "2021/1502 19:00:00".
  • 158xxxxxxxx1 is not in the white list corresponding to the mobile phone number 138xxxxxxxx.
  • the mobile phone number 158xxxxxxxx1 sent a letter to the mobile phone number 138xxxxxxxx, and the sending time of the letter was "2021/1502 19:05:10".
  • the content of the specific letter sent from the sender to the receiver may also be stored in the short message center 41 .
  • Table 6A is only an example, and the embodiment of the present application does not limit the format of letters sent to the terminal 100 by different target terminals stored in the short message center 41 .
  • the short message center 41 may not need to know the whitelist information of the terminal 100, that is, the short message center 41 does not save the whitelist corresponding to the terminal 100, but only caches short messages sent to the terminal 100 by different terminals.
  • the short message center 41 only sends the number of letters sent by one or more target terminals to the terminal 100 to the Beidou network device, and the Beidou network device 200 determines whether the one or more target terminals are targets in the white list according to the saved white list terminal.
  • the short message center 41 after receiving the letter sent to the terminal 100 and determining that the terminal 100 is under the Beidou network, the short message center 41 sends the letter sent to the terminal 100 to the Beidou network device 200 .
  • the Beidou network device 200 when the Beidou network device 200 receives the letter download query request message from the terminal 100, the Beidou network device 200 then sends the message to the short message center based on the letter download query request message. 41 Acquire letters sent to the terminal 100 .
  • the Beidou network device 200 may store letters sent to the terminal 100 .
  • the Beidou network device 200 can store the letters sent to the terminal 100 in the form of a queue according to the original sending time of the letters.
  • the queue for storing letters can follow the first-in-first-out principle. That is, if the same target terminal sends multiple letters to the terminal 100, the Beidou network device 200 can send the letter whose original sending time is earlier to the terminal 100 first. Then the Beidou network device 200 sends the letter with a later original sending time to the terminal 100 .
  • the format of the content of the letters stored in the Beidou network device 200 and sent from different terminals to the terminal 100 may be shown in Table 6B below.
  • the Beidou network device 200 stores letters sent from different terminals to the terminal 100 .
  • the Beidou network device 200 can store the letters of different terminals 100 in the form of queues, and arrange the letters sent from different terminals to the terminal 100 according to the order of sending time of the letters.
  • the Beidou network device 200 can also store the identifier (for example, mobile phone number) of each sender who sends a letter to the terminal 100, whether the identifier of the sender is in the white list, the sending time of the letter, the content of the letter, and so on.
  • the letters stored in the Beidou network device 200 can follow the first-in-first-out principle, that is, when the terminal 100 downloads a letter sent by a single target terminal, the Beidou network device 200 will send the letter with the earliest sending time among the multiple letters sent by the single target terminal. The letter is sent to the terminal 100 first. And when the terminal downloads the letters sent by all the target terminals, the Beidou network device 200 sends the letter with the earliest sending time among the multiple letters sent by all the target terminals to the terminal 100 first.
  • the Beidou network device 200 When the Beidou network device 200 successfully sends the letter sent by the mother at "2021/03/01 14:30:05" to the terminal 100, delete the letter (that is, the letter sent by the mother at "2021/03/01 14:30:05") letter to the terminal 100); or, the Beidou network device 200 receives the mailbox profile inquiry request message sent by the terminal 100, and the letter ID indicated by the message ID field in the message is "2021/03/01 14: 30:05" when the ID of the letter sent to terminal 100 was successfully sent, delete the letter (that is, the letter that mother sent to terminal 100 at "2021/1501 14:30:05").
  • the short message center 41 and/or the Beidou network device 200 only save letters within a preset time. For example, if the Beidou network device 200 only saves letters within three days, then the Beidou network device 200 will delete letters sent three days ago after three days. As shown in Table 6B, if the terminal 100 does not download the letter with the sending time of "2021/1501 08:00:00" at "2021/1504 08:00:00", the Beidou network device 200 will 2021/1504 08:00:00" to delete the letters whose sending time is "2021/1501 08:00:00".
  • the Beidou network equipment will not count other terminals at "2021/03/01 08:00:00" and "2021/03/01 08:00:00" the number of letters sent to the terminal 100. In this way, the cache amount of Beidou network equipment can be reduced in time, and the memory space of Beidou network equipment can be released in time.
  • the Beidou network device 200 After the Beidou network device 200 inquires from the short message center 41 the number of letters sent by the target terminal to the terminal 100 in the mailbox overview query request message, the Beidou network device 200 can generate a mailbox overview query result report based on the number of letters arts.
  • the format of the mailbox profile query result message may be as shown in Table 7 below.
  • the mailbox overview query request message may include a message type indication field, an encryption indication field, a compression indication field, an application layer authentication code field, a white list indication field, and a number of letters field. It can be understood that, in the embodiment of the present application, the specific fields contained in the mailbox profile query result message and the arrangement order of the fields are not limited. For example, if the Beidou network device 200 does not encrypt the mailbox profile query result message, the mailbox profile query result message may not include an encryption indication field.
  • Table 8 exemplarily shows the lengths corresponding to each field in Table 7 and specific descriptions.
  • the message type field may be used to indicate the specific type of the mailbox profile query result message in the mailbox service.
  • the length of the message type field may be 1 bit. When the value of the message type field is 0, it can be used to indicate that the specific service type of the mailbox profile query result message is the mailbox profile. When the value of the message type field is 1, it can be used to indicate that the specific service type of the mailbox overview query result message is letter download.
  • the length of the message type field may also be 2 bits.
  • the detailed definition of the message type indication field can be shown in Table 9 below, and Table 9 shows the types corresponding to different values of the message type indication field.
  • the message type indication field when the message type indication field is 00, it can be used to indicate that the specific service type of the mailbox profile query result message is mailbox profile. When the value of the message type field is 01, it can be used to indicate that the specific service type of the mailbox profile query result message is letter download. When the message type indication field is 10 or 11, it does not correspond to the message type for the time being and is reserved for future use.
  • the encryption indication field may be used to indicate whether the mailbox profile query request message is encrypted.
  • the length of the encryption indication field may be 2 bits.
  • D3 for example, 00
  • the compression indication field may be used to indicate whether the mailbox overview query request message is compressed.
  • the length of the compression indication field may be 2 bits.
  • D4 for example, 00
  • the application layer authentication code field can be used for application layer authentication.
  • the length of the application layer authentication code field may be 16 bits. It can be understood that, the embodiment of the present application does not limit the length of the application layer authentication code field.
  • the whitelist indication field may be used to instruct the terminal 100 to resolve the number of letters field.
  • the length of the whitelist indication field may be 1 bit.
  • D5 for example, 0
  • D6 for example, 1
  • D5 for example, 0
  • D6 for example, 1
  • D6 for example, 1
  • D6 it is used to instruct the terminal 100 to instruct the terminal 100 to analyze the number of letters field according to the number of letters sent by the target terminal in the whitelist, or the number of letters sent by all target terminals not in the whitelist.
  • the number of letters parses the number of letters field. It can be understood that the embodiment of the present application does not limit the length of the whitelist indication field and specific values of the whitelist field.
  • the number of letters field may be used to indicate the number of letters sent to the terminal 100 by the target terminal queried by the terminal 100 . in:
  • the white list indication field in the mailbox profile query result message is a value D5
  • the number of letters field is It is the number of letters sent to the terminal 100 by a single target terminal not in the white list.
  • the length of the letter quantity field may be 4 bits. The specific value of the number of letters can be shown in Table 10 below.
  • Target number has 0 messages 0001
  • the target number has 1 message 0010
  • the target number has 2 messages 0011
  • the target number has 3 messages the ... 1111
  • the target number has 16 pieces of information
  • the current agreement stipulates that the number of letters field is 4 bits
  • the number of letters sent to the terminal 100 by the target terminal queried by the terminal 100 exceeds 16
  • the terminal 100 sends a mailbox overview query it first replies to the target terminal
  • the number of letters sent to the terminal is 16 (that is, the number of the first 16 letters), and when the terminal 100 performs mailbox overview query again, the number of letters after the 16th letter is returned to the terminal 100.
  • the length of the letter number field may not be limited to 4 bits.
  • the white list indication field in the mailbox profile query result message was a value D6
  • the number of letters field was The number of letters sent to the terminal 100 by the target terminal in the white list.
  • the length of the letter quantity field may be 40 bits. The detailed definition of the number of letters can be shown in Table 11 below.
  • each target terminal in the white list occupies 4 bits, and the identifications of 10 target terminals have a total of 5 bytes (ie, 00Byte, 1Byte, 2Byte, 3Byte, 4Byte).
  • each byte has eight bits (bit0-bit7 have eight bits in total).
  • MSB (bit7) is the leftmost bit of the binary bit, representing the highest bit
  • LSB (bit0) is the rightmost bit of the binary bit, representing the lowest bit.
  • the identifier of the target terminal 1 in the whitelist occupies the upper 4 bits (bit7, bit6, bit5, bit4) of the 0th byte.
  • the identifier of the target terminal 2 in the whitelist occupies the lower 4 bits (bit3, bit2, bit1, bit0) of the 0th byte.
  • the identifier of the target terminal 3 in the whitelist occupies the upper 4 bits (bit7, bit6, bit5, bit4) of the first byte.
  • the identifier of the target terminal 4 in the whitelist occupies the lower 4 bits (bit3, bit2, bit1, bit0) of the first byte.
  • the identifier of the target terminal 6 in the whitelist occupies the upper 4 bits (bit7, bit6, bit5, bit4) of the second byte.
  • the identifier of the target terminal 6 in the whitelist occupies the lower 4 bits (bit3, bit2, bit1, bit0) of the second byte.
  • the identification of the target terminal 7 in the whitelist occupies the upper 4 bits (bit7, bit6, bit5, bit4) of the third byte.
  • the identifier of the target terminal 8 in the whitelist occupies the lower 4 bits (bit3, bit2, bit1, bit0) of the third byte.
  • the identification of the target terminal 9 in the whitelist occupies the upper 4 bits (bit7, bit6, bit5, bit4) of the fourth byte.
  • the identifier of the target terminal 10 in the whitelist occupies the lower 4 bits (bit3, bit2, bit1, bit0) of the fourth byte.
  • the white list indication field is a value D6, and the number of letters field is the number of letters sent by the terminal 100 by all target terminals not in the white list and all target terminals in the white list. That is, the number of letters field includes the number of letters sent by all target terminals in the white list of 40 bits, and the number of letters sent by all target terminals not in the white list of N bits.
  • the number of letters of all target terminals not in the whitelist of this Nbit is the sum of the number of letters sent by all target terminals not in the whitelist, and it does not distinguish which target terminals not in the whitelist send the sum of the number of letters.
  • the Beidou network device 200 segments the mailbox profile query result message into one or more SLC PDU2.
  • the Beidou network device 200 may deliver the mailbox profile query result message to the MDCP layer through the interlayer interface.
  • the Beidou network device 200 can segment the mailbox profile query result message into one or more MDCP PDUs at the MDCP layer.
  • the Beidou network device 200 sends one or more MDCP PDUs to the SLC layer.
  • the Beidou network device 200 can segment each MDCP PDU into one or more SLC PDU2 at the SLC layer.
  • the Beidou network device 200 can fill in the identifier of the terminal 100 (for example, the mobile phone number of the terminal 100) in the user ID field in the frame header of each SLC PDU2.
  • the Beidou network device 200 can fill in the identifier of the terminal 100 (for example, the mobile phone number of the terminal 100) in the user ID field in the frame header of each SLC PDU2.
  • the Beidou network device 200 sends one or more SLC PDU2s to the terminal 100.
  • the Beidou network device 200 can send one or more SLC PDU2 to the terminal 100. Specifically, the Beidou network device 200 may finish sending one SLC PDU2, and then send the second SLC PDU2 to the terminal 100 after receiving the reply from the terminal 100 that the SLC PDU2 has been successfully received. Optionally, the Beidou network device 200 may also sequentially send one or more SLC PDU2s to the terminal 100, and the terminal 100 will reply to the Beidou network device 200 that the SLC PDU2 has been successfully received after receiving all the SLC PDU2s. Alternatively, the terminal 100 may not reply. This embodiment of the present application does not limit it.
  • the terminal 100 receives one or more SLC PDU2.
  • Terminal 100 may receive one or more SLC PDU2.
  • the terminal 100 after the terminal 100 has received one or more SLC PDU1, it will reply to the Beidou network device 200 that the one or more SLC PDU2 has been received.
  • the Beidou network device 200 can parse out the user ID field in the frame header of each SLC PDU2 at the SLC layer. If the terminal 100 resolves the identification (for example, mobile phone number 138xxxxxxxx) of the terminal 100 from the user ID field to be the same, then the terminal 100 uploads the one or more SLC PDU2s to the MDCP layer to continue parsing; After analyzing the identity of the terminal 100, the terminal 100 can determine that the SLC PDU2 is not sent to the terminal 100, and the terminal 100 can discard the SLC PDU2.
  • the terminal 100 assembles one or more SLC PDU2 into a mailbox profile query result message.
  • the terminal 100 can assemble one or more SLC PDU2 into one or more SLC SDUs at the SLC layer. Then, the terminal 100 uploads one or more SLC SDUs to the MDCP layer as one or more MDCP PDUs of the MDCP layer. Then, the terminal 100 can combine one or more MDCP PDUs into MDCP SDUs at the MDCP layer. Then, the terminal 100 can upload the MDCP SDU to the APP layer as a mailbox profile query result message.
  • the terminal 100 parses out the number of letters sent by the target terminal to the terminal 100 in the mailbox profile query result message.
  • the terminal 100 can parse out the number of letters field in the mailbox overview query result message at the APP layer, and learn the number of letters sent by the target terminal to the terminal 100 from the number of letters field.
  • the terminal 100 displays the number of letters sent to the terminal 100 by the target terminal.
  • the terminal 100 may display the number of letters sent to the terminal 100 by the target terminal.
  • the terminal 100 may also prompt the user in other forms for the number of letters sent by the target terminal to the terminal 100, for example, the terminal 100 voice broadcasts the number of letters sent by the target terminal to the terminal 100, which is not limited in the embodiment of the present application.
  • the number of letters sent to the terminal 100 by the terminal 100 displayed on the display screen by the target terminal in the whitelist, the target terminal not in the whitelist, and all target terminals may be as shown in FIGS. 8A-8C .
  • terminal 100 may display user interface 80A.
  • the user interface 80A may include: a status bar 803 and a message notification box 804, wherein:
  • the status bar 803 may include a signal strength indicator 801 of a mobile communication signal (also called a cellular signal) and a Beidou communication icon 802.
  • the signal strength indicator 801 of a mobile communication signal (also called a cellular signal) is used for Indicating that the current terminal 100 has no mobile communication signal
  • the Beidou communication icon 802 is used to indicate that the terminal 100 has turned on the Beidou communication function.
  • the message notification box 804 is used to display the number of letters sent by the target terminal to the terminal 100, for example, "received a letter from Dad".
  • the message notification box 804 may further include a control 805, and the user may click the control 805 to download a letter sent by the father.
  • the terminal 100 may display a user interface 80B.
  • the user interface 80B may include: a status bar 803 and a message notification box 806, wherein:
  • the message notification box 806 is used to display the number of letters sent by the target terminal to the terminal 100, for example, "received 16 letters from Xiao Ming".
  • the message notification box 806 may further include a control 807, and the user may click on the control 807 to choose to download any or all of the 16 letters sent by Xiao Ming.
  • the number of letters sent by Xiao Ming's terminal to terminal 100 exceeds 16 (for example, 24), but the Beidou network equipment can query up to 16 letters.
  • the query result of the terminal 100 sent by the Beidou network equipment shows that the number of letters sent by Xiao Ming's terminal to the terminal 100 is 16.
  • the terminal 100 can display that 16 letters from Xiao Ming have been received.
  • the query result sent by the Beidou network device 200 It can include 6 letters that were not downloaded and 8 letters that were not inquired in the last query, that is, the number of letters sent by Xiao Ming's terminal to terminal 100 is 14, and terminal 100 can display that it has received 16 letters from Xiao Ming.
  • the Beidou network device will send The query result of the terminal 100 is that the number of letters sent by Xiao Ming's terminal to the terminal 100 is 16.
  • the terminal 100 can display that 16 letters from Xiao Ming have been received.
  • the terminal 100 may display a user interface 80C.
  • the user interface 80C may include: a status bar 803 and a message notification box 808, wherein:
  • the message notification box 808 is used to display the number of letters sent to the terminal 100 by the target terminal in the white list, and the number of letters sent to the terminal 100 by all target terminals not in the white list. For example, both the ID of father's terminal and the ID of mother's terminal are in the white list of terminal 100.
  • Beidou network device 200 finds out that father's terminal sent to terminal 100 The number of letters of 100 is 3, the number of letters sent by mother's terminal to terminal 100 is 4, and the total number of letters sent to terminal 100 by all target terminals not in the white list is 16.
  • the Beidou network device 200 sends the query result to the terminal 100, and the terminal 100 can display the query result.
  • the message notification box 808 can display "received 3 letters from father", "received 4 letters from mother ", "and received 16 letters from others".
  • the terminal 100 displays the number of letters sent by the dad's terminal in the message notification box 808. The first in the queue.
  • the message notification box 808 may further include a control 809 , a control 810 , or a control 811 .
  • Control 809 is used to download any or all of the 3 letters from Dad.
  • Control 810 is used to download any or all of the 4 letters from mom.
  • the control 811 is used to download any letter or all letters from the other 16 letters.
  • the terminal 100 may also display an option box (not shown) for the user to select which letter to download.
  • the user interfaces shown in FIG. 8A , FIG. 8B , and FIG. 8C may include more or less interface content (for example, application program icons, controls, etc.), which is not limited in this embodiment of the present application.
  • the embodiment of the present application does not limit the specific form of the user interface for displaying the number of letters.
  • the terminal 100 can also query the number of letters sent to the terminal 100 by other terminals under the Beidou network without residing in the cellular network.
  • the exemplary terminal 100 provided by the embodiment of the present application is firstly introduced below.
  • FIG. 8D is a schematic structural diagram of the terminal 100 provided by the embodiment of the present application.
  • terminal 100 may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components.
  • the various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.
  • the terminal 100 may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, and an antenna 2 , mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone jack 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194 and user An identification module (subscriber identification module, SIM) card interface 195 and the like.
  • SIM subscriber identification module
  • the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, bone conduction sensor 180M, etc.
  • the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the terminal 100 .
  • the terminal 100 may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange different components.
  • the illustrated components can be realized in hardware, software or a combination of software and hardware.
  • the processor 110 may include one or more processing units, for example: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU) wait. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • application processor application processor, AP
  • modem processor graphics processing unit
  • GPU graphics processing unit
  • image signal processor image signal processor
  • ISP image signal processor
  • controller memory
  • video codec digital signal processor
  • DSP digital signal processor
  • baseband processor baseband processor
  • neural network processor neural-network processing unit, NPU
  • the controller may be the nerve center and command center of the terminal 100 .
  • the controller can generate an operation control signal according to the instruction opcode and timing signal, and complete the control of fetching and executing the instruction.
  • a memory may also be provided in the processor 110 for storing instructions and data.
  • the memory in processor 110 is a cache memory.
  • the memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided, and the waiting time of the processor 110 is reduced, thus improving the efficiency of the system.
  • processor 110 may include one or more interfaces.
  • the interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous transmitter (universal asynchronous receiver/transmitter, UART) interface, mobile industry processor interface (mobile industry processor interface, MIPI), general-purpose input and output (general-purpose input/output, GPIO) interface, subscriber identity module (subscriber identity module, SIM) interface, and /or universal serial bus (universal serial bus, USB) interface, etc.
  • I2C integrated circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • PCM pulse code modulation
  • UART universal asynchronous transmitter
  • MIPI mobile industry processor interface
  • GPIO general-purpose input and output
  • subscriber identity module subscriber identity module
  • SIM subscriber identity module
  • USB universal serial bus
  • the I2C interface is a bidirectional synchronous serial bus, including a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL).
  • processor 110 may include multiple sets of I2C buses.
  • the processor 110 can be respectively coupled to the touch sensor 180K, the charger, the flashlight, the camera 193 and the like through different I2C bus interfaces.
  • the processor 110 may be coupled to the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to realize the touch function of the terminal 100 .
  • the I2S interface can be used for audio communication.
  • processor 110 may include multiple sets of I2S buses.
  • the processor 110 may be coupled to the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 .
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through the Bluetooth headset.
  • the PCM interface can also be used for audio communication, sampling, quantizing and encoding the analog signal.
  • the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface.
  • the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.
  • the UART interface is a universal serial data bus used for asynchronous communication.
  • the bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication.
  • a UART interface is generally used to connect the processor 110 and the wireless communication module 160 .
  • the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to realize the Bluetooth function.
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.
  • the MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 .
  • MIPI interface includes camera serial interface (camera serial interface, CSI), display serial interface (display serial interface, DSI), etc.
  • the processor 110 communicates with the camera 193 through a CSI interface to realize the shooting function of the terminal 100 .
  • the processor 110 communicates with the display screen 194 through the DSI interface to realize the display function of the terminal 100 .
  • the GPIO interface can be configured by software.
  • the GPIO interface can be configured as a control signal or as a data signal.
  • the GPIO interface can be used to connect the processor 110 with the camera 193 , the display screen 194 , the wireless communication module 160 , the audio module 170 , the sensor module 180 and so on.
  • the GPIO interface can also be configured as an I2C interface, I2S interface, UART interface, MIPI interface, etc.
  • the SIM interface can be used to communicate with the SIM card interface 195 to realize the function of transmitting data to the SIM card or reading data in the SIM card.
  • the USB interface 130 is an interface conforming to the USB standard specification, specifically, it can be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like.
  • the USB interface 130 can be used to connect a charger to charge the terminal 100, and can also be used to transmit data between the terminal 100 and peripheral devices. It can also be used to connect headphones and play audio through them. This interface can also be used to connect other electronic devices, such as AR devices.
  • the interface connection relationship between the modules shown in the embodiment of the present invention is only a schematic illustration, and does not constitute a structural limitation of the terminal 100 .
  • the terminal 100 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.
  • the charging management module 140 is configured to receive a charging input from a charger.
  • the charger may be a wireless charger or a wired charger.
  • the power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 .
  • the power management module 141 receives the input from the battery 142 and/or the charging management module 140 to provide power for the processor 110 , the internal memory 121 , the external memory, the display screen 194 , the camera 193 , and the wireless communication module 160 .
  • the wireless communication function of the terminal 100 can be realized by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas.
  • Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network.
  • the antenna may be used in conjunction with a tuning switch.
  • the mobile communication module 150 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal 100 .
  • the mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like.
  • the mobile communication module 150 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and send them to the modem processor for demodulation.
  • the mobile communication module 150 can also amplify the signals modulated by the modem processor, and convert them into electromagnetic waves through the antenna 1 for radiation.
  • at least part of the functional modules of the mobile communication module 150 may be set in the processor 110 .
  • at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be set in the same device.
  • a modem processor may include a modulator and a demodulator.
  • the modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator sends the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the low-frequency baseband signal is passed to the application processor after being processed by the baseband processor.
  • the application processor outputs sound signals through audio equipment (not limited to speaker 170A, receiver 170B, etc.), or displays images or videos through display screen 194 .
  • the modem processor may be a stand-alone device.
  • the modem processor may be independent from the processor 110, and be set in the same device as the mobile communication module 150 or other functional modules.
  • the wireless communication module 160 can provide wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (Wi-Fi) network), bluetooth (bluetooth, BT), global navigation satellite system, etc. (global navigation satellite system, GNSS), Beidou communication module, frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 .
  • the wireless communication module 160 can also receive the signal to be sent from the processor 110 , frequency-modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.
  • the Beidou communication module can be used to communicate with the Beidou network device 200 .
  • the Beidou communication module can support short message transmission with the Beidou network device 200 .
  • the antenna 1 of the terminal 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the terminal 100 can communicate with the network and other devices through wireless communication technology.
  • the wireless communication technology may include global system for mobile communications (GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), broadband Code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC , FM, and/or IR techniques, etc.
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • code division multiple access code division multiple access
  • CDMA broadband Code division multiple access
  • WCDMA wideband code division multiple access
  • time division code division multiple access time-division code division multiple access
  • TD-SCDMA time-division code division multiple access
  • LTE long
  • the GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a Beidou navigation satellite system (beidou navigation satellite system, BDS), a quasi-zenith satellite system (quasi -zenith satellite system (QZSS) and/or satellite based augmentation systems (SBAS).
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • Beidou navigation satellite system beidou navigation satellite system
  • BDS Beidou navigation satellite system
  • QZSS quasi-zenith satellite system
  • SBAS satellite based augmentation systems
  • the terminal 100 realizes the display function through the GPU, the display screen 194, and the application processor.
  • the GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.
  • the display screen 194 is used to display images, videos and the like.
  • the display screen 194 includes a display panel.
  • the display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light emitting diode, AMOLED), flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diodes (quantum dot light emitting diodes, QLED), etc.
  • the terminal 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.
  • the terminal 100 can realize the shooting function through the ISP, the camera 193 , the video codec, the GPU, the display screen 194 and the application processor.
  • the ISP is used for processing the data fed back by the camera 193 .
  • the light is transmitted to the photosensitive element of the camera through the lens, and the light signal is converted into an electrical signal, and the photosensitive element of the camera transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye.
  • ISP can also perform algorithm optimization on image noise, brightness, and color.
  • ISP can also optimize the exposure, color temperature and other parameters of the shooting scene.
  • the ISP may be located in the camera 193 .
  • Camera 193 is used to capture still images or video.
  • the object generates an optical image through the lens and projects it to the photosensitive element.
  • the photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor.
  • CMOS complementary metal-oxide-semiconductor
  • the photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal.
  • the ISP outputs the digital image signal to the DSP for processing.
  • DSP converts digital image signals into standard RGB, YUV and other image signals.
  • the terminal 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.
  • Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point.
  • Video codecs are used to compress or decompress digital video.
  • Terminal 100 may support one or more video codecs.
  • the terminal 100 can play or record videos in various encoding formats, for example: moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.
  • the NPU is a neural-network (NN) computing processor.
  • NN neural-network
  • Applications such as intelligent cognition of the terminal 100 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.
  • the internal memory 121 may include one or more random access memories (random access memory, RAM) and one or more non-volatile memories (non-volatile memory, NVM).
  • RAM random access memory
  • NVM non-volatile memory
  • Random access memory can include static random-access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous dynamic random access memory, SDRAM), double data rate synchronous Dynamic random access memory (double data rate synchronous dynamic random access memory, DDR SDRAM, such as the fifth generation DDR SDRAM is generally called DDR5SDRAM), etc.;
  • SRAM static random-access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous Dynamic random access memory double data rate synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • DDR5SDRAM double data rate synchronous dynamic random access memory
  • Non-volatile memory may include magnetic disk storage devices, flash memory (flash memory).
  • flash memory can include NOR FLASH, NAND FLASH, 3D NAND FLASH, etc.
  • it can include single-level storage cells (single-level cell, SLC), multi-level storage cells (multi-level cell, MLC), three-level storage unit (triple-level cell, TLC), fourth-level storage unit (quad-level cell, QLC), etc.
  • can include universal flash storage English: universal flash storage, UFS) according to storage specifications , embedded multimedia memory card (embedded multi media Card, eMMC), etc.
  • the random access memory can be directly read and written by the processor 110, can be used to store executable programs (such as machine instructions) of operating systems or other running programs, and can also be used to store user and application program data.
  • the non-volatile memory can also store executable programs and data of users and application programs, etc., and can be loaded into the random access memory in advance for the processor 110 to directly read and write.
  • the terminal 100 may implement an audio function through an audio module 170 , a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, and an application processor. Such as music playback, recording, etc.
  • the audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signal.
  • the audio module 170 may also be used to encode and decode audio signals.
  • the audio module 170 may be set in the processor 110 , or some functional modules of the audio module 170 may be set in the processor 110 .
  • Speaker 170A also referred to as a "horn" is used to convert audio electrical signals into sound signals. Terminal 100 can listen to music through speaker 170A, or listen to hands-free calls.
  • Receiver 170B also called “earpiece” is used to convert audio electrical signals into sound signals.
  • the receiver 170B can be placed close to the human ear to listen to the voice.
  • the microphone 170C also called “microphone” or “microphone” is used to convert sound signals into electrical signals.
  • the user can put his mouth close to the microphone 170C to make a sound, and input the sound signal to the microphone 170C.
  • the terminal 100 may be provided with at least one microphone 170C.
  • the terminal 100 may be provided with two microphones 170C, which may also implement a noise reduction function in addition to collecting sound signals.
  • the terminal 100 can also be equipped with three, four or more microphones 170C to realize sound signal collection, noise reduction, identify sound sources, realize directional recording functions, and the like.
  • the earphone interface 170D is used for connecting wired earphones.
  • the earphone interface 170D can be a USB interface 130, or a 3.5mm open mobile terminal platform (OMTP) standard interface, or a cellular telecommunications industry association of the USA (CTIA) standard interface.
  • OMTP open mobile terminal platform
  • CTIA cellular telecommunications industry association of the USA
  • the pressure sensor 180A is used to sense the pressure signal and convert the pressure signal into an electrical signal.
  • pressure sensor 180A may be disposed on display screen 194 .
  • pressure sensors 180A such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors.
  • a capacitive pressure sensor may be comprised of at least two parallel plates with conductive material.
  • the terminal 100 determines the strength of the pressure from the change in capacitance.
  • the terminal 100 detects the intensity of the touch operation according to the pressure sensor 180A.
  • the terminal 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A.
  • touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold acts on the short message application icon, an instruction to view short messages is executed. When a touch operation whose intensity is greater than or equal to the first pressure threshold acts on the icon of the short message application, the instruction of creating a new short message is executed.
  • the gyro sensor 180B can be used to determine the motion posture of the terminal 100 .
  • the angular velocity of the terminal 100 around three axes ie, x, y and z axes
  • the gyro sensor 180B can be used for image stabilization.
  • the gyro sensor 180B detects the shaking angle of the terminal 100, and calculates the distance that the lens module needs to compensate according to the angle, and allows the lens to counteract the shaking of the terminal 100 through reverse movement to achieve anti-shake.
  • the gyro sensor 180B can also be used for navigation and somatosensory game scenes.
  • the air pressure sensor 180C is used to measure air pressure.
  • the terminal 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.
  • the magnetic sensor 180D includes a Hall sensor.
  • the terminal 100 may use the magnetic sensor 180D to detect the opening and closing of the flip holster.
  • the terminal 100 when the terminal 100 is a clamshell machine, the terminal 100 can detect the opening and closing of the clamshell according to the magnetic sensor 180D.
  • features such as automatic unlocking of the flip cover are set.
  • the acceleration sensor 180E can detect the acceleration of the terminal 100 in various directions (generally three axes).
  • the magnitude and direction of gravity can be detected when the terminal 100 is stationary. It can also be used to identify the posture of electronic devices, and can be used in applications such as horizontal and vertical screen switching, pedometers, etc.
  • the distance sensor 180F is used to measure the distance.
  • the terminal 100 can measure the distance by infrared or laser. In some embodiments, when shooting a scene, the terminal 100 may use the distance sensor 180F for distance measurement to achieve fast focusing.
  • Proximity light sensor 180G may include, for example, light emitting diodes (LEDs) and light detectors, such as photodiodes.
  • the light emitting diodes may be infrared light emitting diodes.
  • the terminal 100 emits infrared light through the light emitting diode.
  • the terminal 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it may be determined that there is an object near the terminal 100 . When insufficient reflected light is detected, the terminal 100 may determine that there is no object near the terminal 100 .
  • the terminal 100 can use the proximity light sensor 180G to detect that the user holds the terminal 100 close to the ear to make a call, so as to automatically turn off the screen to save power.
  • the proximity light sensor 180G can also be used in leather case mode, automatic unlock and lock screen in pocket mode.
  • the ambient light sensor 180L is used for sensing ambient light brightness.
  • the terminal 100 may adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness.
  • the ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures.
  • the ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the terminal 100 is in the pocket, so as to prevent accidental touch.
  • the fingerprint sensor 180H is used to collect fingerprints.
  • the terminal 100 can use the collected fingerprint characteristics to realize fingerprint unlocking, access to the application lock, take pictures with fingerprints, answer incoming calls with fingerprints, and so on.
  • the temperature sensor 180J is used to detect temperature.
  • the terminal 100 uses the temperature detected by the temperature sensor 180J to implement a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds the threshold, the terminal 100 executes reducing the performance of a processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection.
  • the terminal 100 when the temperature is lower than another threshold, the terminal 100 heats the battery 142 to avoid abnormal shutdown of the terminal 100 due to low temperature.
  • the terminal 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.
  • Touch sensor 180K also known as "touch panel”.
  • the touch sensor 180K can be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, also called a “touch screen”.
  • the touch sensor 180K is used to detect a touch operation on or near it.
  • the touch sensor can pass the detected touch operation to the application processor to determine the type of touch event.
  • Visual output related to the touch operation can be provided through the display screen 194 .
  • the touch sensor 180K may also be disposed on the surface of the terminal 100 , which is different from the position of the display screen 194 .
  • the keys 190 include a power key, a volume key and the like.
  • the key 190 may be a mechanical key. It can also be a touch button.
  • the terminal 100 may receive key input and generate key signal input related to user settings and function control of the terminal 100 .
  • the motor 191 can generate a vibrating reminder.
  • the motor 191 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback.
  • touch operations applied to different applications may correspond to different vibration feedback effects.
  • the motor 191 may also correspond to different vibration feedback effects for touch operations acting on different areas of the display screen 194 .
  • Different application scenarios for example: time reminder, receiving information, alarm clock, games, etc.
  • the touch vibration feedback effect can also support customization.
  • the indicator 192 can be an indicator light, and can be used to indicate charging status, power change, and can also be used to indicate messages, missed calls, notifications, and the like.
  • the SIM card interface 195 is used for connecting a SIM card.
  • the SIM card can be connected and separated from the terminal 100 by inserting it into the SIM card interface 195 or pulling it out from the SIM card interface 195 .
  • the terminal 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card etc. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the multiple cards may be the same or different.
  • the SIM card interface 195 is also compatible with different types of SIM cards.
  • the SIM card interface 195 is also compatible with external memory cards.
  • the terminal 100 interacts with the network through the SIM card to implement functions such as calling and data communication.
  • the above content elaborates the method provided by the present application in detail.
  • the embodiments of the present application also provide corresponding devices or equipment.
  • the embodiment of the present application can divide the functional modules of the terminal 100 and the Beidou network device 200 according to the above-mentioned method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 9 is a schematic structural diagram of a communication device 900 provided in an embodiment of the present application.
  • the communication device 900 may be the terminal 100 in the foregoing embodiments.
  • the communication device 900 may be a chip/chip system, for example, a Beidou communication chip.
  • the communication device 900 may include a transceiver unit 910 and a processing unit 920 .
  • the transceiver unit 910 can be used to send a mailbox overview query request message to the Beidou network device 200;
  • the transceiver unit 910 may also be configured to receive a mailbox profile query result message.
  • the processing unit 920 may be configured to send the mailbox profile query request message to the MDCP layer, and may segment the mailbox profile query request message into one or more MDCP PDUs at the MDCP layer.
  • the processing unit 920 may also be configured to deliver one or more MDCP PDUs to the SLC layer, and may segment each MDCP PDU into one or more SLC PDU1 at the SLC layer.
  • the transceiver unit 910 may also be configured to perform the functional steps related to sending and receiving performed by the terminal 100 in the method embodiment shown in FIG. 7 above.
  • processing unit 920 may also be configured to execute functional steps related to protocol parsing and encapsulation and calculation determination performed by the terminal 100 in the method embodiment shown in FIG. 7 above.
  • the communication device 900 in this design can correspondingly perform the method steps performed by the terminal 100 in the foregoing embodiments, and for the sake of brevity, details are not repeated here.
  • FIG. 10 is a schematic structural diagram of a communication device 1000 provided in an embodiment of the present application.
  • the communication apparatus 1000 may be the Beidou network device 200 in the foregoing embodiments.
  • the communication device 1000 may be a specific network element in the Beidou network equipment 200, for example, the Beidou ground receiving station 31, the Beidou ground transmitting station 35, the signal receiving and processing device 32, the signal processing center 33, the signal sending and processing device 36, A network element or a combination of multiple network elements in the operation control center 37 and the Beidou short message fusion communication platform 34.
  • the communication device 1000 may include a transceiver unit 1010 and a processing unit 1020 .
  • the transceiver unit 1010 may be configured to receive a mailbox profile query request message.
  • the transceiver unit 1010 is further configured to send a mail box profile query result message.
  • the processing unit 1020 may be configured to combine one or more SLC PDU1 into a mailbox profile query request message.
  • the processing unit 1020 can also be used to assemble one or more SLC PDU1 into one or more SLC SDUs at the SLC layer, and upload one or more SLC SDUs to the MDCP layer as one or more MDCP PDUs of the MDCP layer;
  • the MDCP layer assembles one or more MDCP PDUs into an MDCP SDU; then, it can be used to upload the MDCP SDU to the APP layer as a mailbox profile query request message.
  • the transceiver unit 1010 may also be configured to perform the functional steps related to sending and receiving performed by the Beidou network device 200 in the method embodiment shown in FIG. 7 above.
  • the processing unit 1020 may also be configured to perform functional steps related to protocol parsing and encapsulation and calculation determination performed by the Beidou network device 200 in the method embodiment shown in FIG. 7 above.
  • the communication device 1000 in this design can correspondingly perform the method steps performed by the Beidou network device 200 in the foregoing embodiments, and for the sake of brevity, details are not repeated here.
  • the terminal 100 and the Beidou network device 200 of the embodiment of the present application have been introduced above. It should be understood that any product of any form having the functions of the terminal 100 described above in FIG. Products of any form with functions fall within the scope of protection of the embodiments of the present application.
  • the terminal 100 described in the embodiment of the present application may be implemented by a general bus architecture.
  • FIG. 11 is a schematic structural diagram of a communication device 1100 provided by an embodiment of the present application.
  • the communication device 1100 may be the terminal 100, or a device therein.
  • the communication device 1100 includes a processor 1101 and a transceiver 1102 internally connected and communicating with the processor.
  • the processor 1101 is a general purpose processor or a special purpose processor or the like.
  • it may be a baseband processor or a central processing unit for satellite communications.
  • the baseband processor of satellite communication can be used to process satellite communication protocols and satellite communication data
  • the central processing unit can be used to control communication devices (such as baseband chips, terminals, terminal chips, etc.), execute computer programs, and process computer Program data.
  • the transceiver 1102 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 1102 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.
  • the communication device 1100 may further include an antenna 1103 and/or a radio frequency unit (not shown in the figure).
  • the antenna 1103 and/or the radio frequency unit may be located inside the communication device 1100, or may be separated from the communication device 1100, that is, the antenna 1103 and/or the radio frequency unit may be remote or distributed.
  • the communication device 1100 may include one or more memories 1104, on which instructions may be stored, the instructions may be computer programs, and the computer programs may be run on the communication device 1100, so that the communication device 1100 executes the above-mentioned Methods described in the Methods Examples.
  • data may also be stored in the memory 1104 .
  • the communication device 1100 and the memory 1104 can be set separately or integrated together.
  • the processor 1101, the transceiver 1102, and the memory 1104 may be connected through a communication bus.
  • the communication device 1100 may be used to perform the functions of the terminal 100 in the foregoing embodiments: the processor 1101 may be used to perform the protocol analysis and processing performed by the terminal 100 in the embodiments shown in FIG. 3 and FIG. 5 and FIG. 7 . Function steps determined by encapsulation and calculation and/or other processes used in the technology described herein; the transceiver 1102 can be used to perform the related protocol analysis and processing performed by the terminal 100 in the embodiments shown in FIG. 3 and FIG. 5 and FIG. 7 Encapsulating and computing certain functional steps and/or other processes for the techniques described herein.
  • the processor 1101 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuit, interface or interface circuit used to realize the receiving and sending functions can be separated or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.
  • the processor 1101 may store instructions, the instructions may be computer programs, and the computer programs run on the processor 1101 to enable the communication device 1100 to perform the method steps performed by the terminal 100 in the above method embodiments.
  • the computer program may be fixed in the processor 1101, in this case, the processor 1101 may be implemented by hardware.
  • the communication device 1100 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • Communications apparatus 1100 may be a stand-alone device or may be part of a larger device.
  • the communication device 1100 may be:
  • a set of one or more ICs may also include storage components for storing data and computer programs;
  • ASIC such as modem (Modem);
  • any network element in the Beidou network equipment 200 described in the embodiment of the application can be realized by a general bus architecture.
  • FIG. 12 is a schematic structural diagram of a communication device 1200 provided by an embodiment of the present application.
  • the communication device 1200 may be the Beidou network device 200, or a device therein.
  • the communication device 1200 includes a processor 1201 and a transceiver 1202 internally connected and communicating with the processor.
  • the processor 1201 is a general purpose processor or a special purpose processor or the like. For example, it may be a baseband processor or a central processing unit for satellite communications.
  • the baseband processor of the satellite communication can be used to process the satellite communication protocol and satellite communication data, and the central processing unit can be used to control the communication device (eg, baseband chip, etc.), execute the computer program, and process the data of the computer program.
  • the transceiver 1202 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 1202 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit, etc., for realizing a receiving function; the transmitter may be called a transmitter, or a sending circuit, for realizing a sending function.
  • the communication device 1200 may further include an antenna 1203 and/or a radio frequency unit (not shown in the figure).
  • the antenna 1203 and/or the radio frequency unit may be located inside the communication device 1200, or may be separated from the communication device 1200, that is, the antenna 1203 and/or the radio frequency unit may be remote or distributed.
  • the communication device 1200 may include one or more memories 1204, on which instructions may be stored.
  • the instructions may be computer programs, and the computer programs may be run on the communication device 1200, so that the communication device 1200 executes the above-mentioned Methods described in the Methods Examples.
  • data may also be stored in the memory 1204 .
  • the communication device 1200 and the memory 1204 can be set separately or integrated together.
  • the processor 1201, the transceiver 1202, and the memory 1204 may be connected through a communication bus.
  • the communication device 1200 can be used to perform the functions of the Beidou network device 200 in the foregoing embodiments: the processor 1201 can be used to perform the related protocol parsing and encapsulation performed by the Beidou network device 200 in the embodiment shown in FIG. 7 and The functional steps determined by the calculation and/or other processes used in the technology described herein; the transceiver 1202 can be used to execute the relevant protocol analysis and processing performed by the Beidou network device 200 in the embodiments shown in the above-mentioned FIG. 4 , FIG. 6 and FIG. 7 Encapsulating and computing certain functional steps and/or other processes for the techniques described herein.
  • the processor 1201 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.
  • the processor 1201 may store instructions, which may be computer programs, and the computer programs run on the processor 1201 to enable the communication device 1200 to perform the method steps performed by the terminal 100 in the above method embodiments.
  • the computer program may be solidified in the processor 1201, and in this case, the processor 1201 may be implemented by hardware.
  • the embodiment of the present application also provides a computer-readable storage medium, where computer program code is stored in the computer-readable storage medium, and when the above-mentioned processor executes the computer program code, the communication device executes the method in any of the above-mentioned embodiments .
  • An embodiment of the present application further provides a computer program product, which, when the computer program product is run on a computer, causes the computer to execute the method in any one of the foregoing embodiments.
  • the embodiment of the present application also provides a communication device, which can exist in the product form of a chip.
  • the structure of the device includes a processor and an interface circuit.
  • the processor is used to communicate with other devices through a receiving circuit, so that the device performs the aforementioned The method in any of the examples.
  • the embodiment of the present application also provides a Beidou communication system, including a terminal 100 and a Beidou network device 200.
  • the terminal 100 and the Beidou network device 200 can execute the method in any of the foregoing embodiments.
  • This application fully introduces the communication function of short messages in the Beidou communication system. It is understandable that there may be communication functions supporting short messages in other satellite systems. Therefore, it is not limited to the Beidou communication system. If other satellite systems also support the short message communication function, the method introduced in this application is also applicable to the communication of other satellite systems.
  • the term “when” may be interpreted to mean “if” or “after” or “in response to determining" or “in response to detecting".
  • the phrases “in determining” or “if detected (a stated condition or event)” may be interpreted to mean “if determining" or “in response to determining" or “on detecting (a stated condition or event)” or “in response to detecting (a stated condition or event)”.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, DSL) or wireless (eg, infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state hard disk), etc.
  • the processes can be completed by computer programs to instruct related hardware.
  • the programs can be stored in computer-readable storage media.
  • When the programs are executed may include the processes of the foregoing method embodiments.
  • the aforementioned storage medium includes: ROM or random access memory RAM, magnetic disk or optical disk, and other various media that can store program codes.

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Abstract

本申请公开了一种北斗通信系统中的信箱概况查询方法、系统及相关装置，该方法可以包括：终端可以向北斗网络设备发送信箱概况查询请求报文，信箱概况查询请求报文中包含业务类型字段、消息ID字段；业务类型字段用于指示信箱概况查询请求报文的业务类型，消息ID字段用于指示终端上一次接收成功的信件的ID。终端接收北斗网络设备发送的信箱概况查询结果报文；信箱概况查询结果报文中包含白名单指示字段和信件数量字段；白名单指示字段用于终端如何解析信件数量字段；信件数量字段用于指示一个或多个目标终端发给终端的信件数量。这样，用户在北斗网络下，也可以查询到其他用户是否有发送信件给用户。

Description

北斗通信系统中的信箱概况查询方法、系统及相关装置
本申请要求于2021年08月06日提交中国专利局、申请号为202110903906.4、申请名称为“一种北斗通信系统中的信箱概况查询方法及相关装置”的中国专利申请的优先权，和于2021年09月30日提交中国专利局、申请号为202111163888.7、申请名称为“北斗通信系统中的信箱概况查询方法、系统及相关装置”的中国专利申请的优先权，以及于2021年10月18日提交中国专利局、申请号为202111212369.5、申请名称为“北斗通信系统中的信箱概况查询方法、系统及相关装置”其全部内容通过引用结合在本申请中。
技术领域
本申请涉及北斗通信技术领域，尤其涉及一种北斗通信系统中的信箱概况查询方法、系统及相关装置。
背景技术
北斗卫星导航系统是我国自主研制的集定位、授时、通信于一体的重大基础设施。北斗短报文系统是利用北斗卫星系统，实现短报文信息的发送。特别适用于在海洋，沙漠，草原、无人区等移动通信未覆盖、或覆盖不了、或通信系统被破坏的区域进行通信。当终端处于移动通信未覆盖、或覆盖不了、或通信系统被破坏的区域进行通信的环境中，终端无法通过蜂窝网络或者无线局域网络(例如，无线保真(wireless fidelity，Wi-Fi))及时获知是否有发送给该终端的信件。
由此，当终端所在的环境中没有蜂窝网络、或无线局域网络的情况下，终端如何获知是否有发送给该终端的信件，是亟待解决的问题。
发明内容
本申请提供了一种北斗通信系统中的信箱概况查询方法、系统及相关装置，通过本申请实施例提供的一种北斗通信系统中的信箱概况查询方法，当终端所在的环境中没有蜂窝网络、或者无线局域网络的情况下，终端也可以获知其他终端发送给该终端的信件的数量。
第一方面，本申请提供了一种北斗通信系统中的信箱概况查询方法，该方法可以包括：第一终端向北斗网络设备发送信箱概况查询请求报文，信箱概况查询请求报文用于查询一个或多个第二终端发送给第一终端的信件的数量，信箱概况查询请求报文中包括消息ID字段，消息ID字段用于指示第一终端上一次接收成功的第一信件的ID，第一信件的ID用于指示北斗网络设备删除第一信件；第一终端接收北斗网络设备发送的信箱概况查询结果报文；信箱概况查询结果报文中包括信件数量字段；信件数量字段用于指示一个或多个第二终端发送给第一终端的信件的数量，一个或多个第二终端发送给第一终端的信件的数量中不包括第一信件的数量。
这样，当第一终端所在的环境中没有蜂窝网络、或者无线局域网络的情况下，终端也可以获知其他终端有没有给第一终端发送信件，获知其他终端发送给第一终端的信件的数量。并且，第一终端获知其他终端发送给第一终端的信件的数量中不包括已经下载过的信件的数量。这样，北斗网络设备不会重复统计已经发送过的信件，将相同的信件重复发送给第一终端。
结合第一方面，在一种可能的实现方式中，信箱概况查询请求报文还包括业务类型字段，在业务类型字段为第一值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第二值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询非白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第三值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询所有第二终端发送给第一终端的信件的数量；其中，第一终端中设置有白名单，白名单中用于存储与第一终端关联的第二终端的标识、以及与第一终端关联的第二终端的序号。
这样，第一终端可以通过该业务类型字段指定该信箱概况查询请求报文的具体业务类型。北斗网络设备接收信箱概况查询请求报文后，也可以通过该业务类型字段获知该信箱概况查询请求报文的业务类型。
结合第一方面，在一种可能的实现方式中，在业务类型字段为第一值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段为白名单比特位图，白名单比特位图的第一比特位用于指示白名单内第一序号的第二终端的标识；在业务类型字段为第二值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段用于指示非白名单内的第二终端的手机号码。
这样，北斗网络设备接收到该信箱概况查询请求报文后，根据发送方ID字段中的标识可以确定要去查询哪个终端发送给第一终端的信件的数量。
结合第一方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括回执指示字段，该回执指示字段可以用于指示该信箱概况查询请求报文的接收设备(例如，北斗网络设备)是否需要向第一终端回复应用层回执。应用层回执可以用于指示接收设备是否成功接收该信箱概况查询请求报文。回执指示字段的长度可以是1bit。当该回执指示字段为数值D1(例如，0)时，可以用于指示该信箱概况查询请求报文的接收设备不需要向第一终端回复应用层回执。当该回执指示字段为数值D2(例如，1)时，可以用于指示该信箱概况查询请求报文的接收设备需要向第一终端回复应用层回执。
结合第一方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询请求报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第一方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询请求报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第一方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第一方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括白名单指示字段，在白名单指示字段为第四值的情况下，白名单指示字段用于指示信件数量字段中为非白名单内的一个第二终端发送给第一终端的信件的数量；在白名单指示字段为第五值的情况下，白名单指示字段用于指示信件数量字段中为白名单内的第二终端发送给第一终端的信件的数量、或所有第二终端发送给第一终端的信件的数量。
这样，第一终端接收到信箱概况查询结果报文后，知道如何解析信箱概况查询结果报文 中的信件数量字段。
结合第一方面，在一种可能的实现方式中，信箱概况查询结果报文还包括消息类型指示字段，在消息类型指示字段为第六值的情况下，消息类型指示字段用于指示信箱概况查询结果报文用于查询一个或多个第二终端发送给第一终端的信件的数量；在消息类型指示字段为第七值的情况下，消息类型指示字段用于指示信箱概况查询结果报文用于下载一个或多个第二终端发送给第一终端的信件的内容。
这样，第一终端接收到信箱概况查询结果报文后，可以根据该信箱概况查询结果报文中的消息类型指示字段确定该信箱概况查询结果报文的类型。从而，第一终端可以正确解析该信箱概况查询结果报文。
结合第一方面，在一种可能的实现方式中，在信箱概况查询请求报文中的所述业务类型为第二值的情况下，信箱概况查询结果报文中的白名单指示字段为第四值，信箱概况查询结果报文中的消息类型指示字段为第六值；在信箱概况查询请求报文中的业务类型为第一值或第三值的情况下，信箱概况查询结果报文中的白名单指示字段为第五值，信箱概况查询结果报文中的消息类型指示字段为第六值。
结合第一方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询结果报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第一方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询结果报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第一方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第一方面，在一种可能的实现方式中，第一终端向北斗网络设备发送信箱概况查询请求报文，具体包括：第一终端在应用APP层将信箱概况查询请求报文下发至第一终端的消息数据汇聚MDCP层，作为MDCP层的MDCP服务数据单元SDU；第一终端将MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；一个或多个MDCP PDU中包括第一MDCP PDU；第一终端将第一MDCP PDU下发至卫星链路控制SLC层，作为SLC层的SLC SDU；第一终端将SLC SDU拆分成一个或多个SLC PDU；第一终端将一个或多个SLC PDU发送给北斗网络设备。
结合第一方面，在一种可能的实现方式中，第一终端接收所述北斗网络设备发送的信箱概况查询结果报文，具体包括：第一终端接收所述北斗网络设备发送的P个SLC PDU；P为正整数；第一终端在SLC层将P个SLC PDU拼成Q个SLC SDU；Q为正整数，Q小于或等于P；第一终端将Q个SLC SDU上传至MDCP层，作为MDCP层的Q个MDCP PDU；第一终端在MDCP层将Q个MDCP PDU拼成MDCP SDU；第一终端在MDCP层将MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询结果报文。
结合第一方面，在一种可能的实现方式中，第一终端接收北斗网络设备发送的信箱概况查询结果报文之后，该方法还包括：第一终端解析出信箱概况查询结果报文中信件数量字段中一个或多个第二终端发送的第一终端的信件的数量；第一终端在显示屏中显示一个或多个第二终端发送的第一终端的信件的数量。
第二方面，提供一种北斗通信系统中的信箱概况查询方法，该方法可以包括：北斗网络设备接收到第一终端发送的信箱概况查询请求报文，信箱概况查询请求报文用于查询一个或多个第二终端发送给第一终端的信件的数量，信箱概况查询请求报文中包括消息ID字段，消息ID字段用于指示第一终端上一次接收成功的第一信件的ID，第一信件的ID用于指示北斗网络设备删除第一信件；基于信箱概况查询请求报文，北斗网络设备生成信箱概况查询结果报文，信箱概况查询结果报文中包括信件数量字段；信件数量字段用于指示一个或多个第二终端发送给第一终端的信件的数量；一个或多个第二终端发送给第一终端的信件的数量中不包括第一信件的数量；北斗网络设备向第一终端发送信箱概况查询结果报文。
这样，当第一终端所在的环境中没有蜂窝网络、或者无线局域网络的情况下，终端也可以获知其他终端有没有给第一终端发送信件，获知其他终端发送给第一终端的信件的数量。并且，第一终端获知其他终端发送给第一终端的信件的数量中不包括已经下载过的信件的数量。这样，北斗网络设备不会重复统计已经发送过的信件，将相同的信件重复发送给第一终端。
结合第二方面，在一种可能的实现方式中，信箱概况查询请求报文还包括业务类型字段，在业务类型字段为第一值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第二值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询非白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第三值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询所有第二终端发送给第一终端的信件的数量；其中，第一终端中设置有白名单，白名单中用于存储与第一终端关联的第二终端的标识、以及与第一终端关联的第二终端的序号。
这样，第一终端可以通过该业务类型字段指定该信箱概况查询请求报文的具体业务类型。北斗网络设备接收信箱概况查询请求报文后，也可以通过该业务类型字段获知该信箱概况查询请求报文的业务类型。
结合第二方面，在一种可能的实现方式中，在业务类型字段为第一值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段为白名单比特位图，白名单比特位图的第一比特位用于指示白名单内第一序号的第二终端的标识；在业务类型字段为第二值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段用于指示非白名单内的第二终端的手机号码。
这样，北斗网络设备接收到该信箱概况查询请求报文后，根据发送方ID字段中的标识可以确定要去查询哪个终端发送给第一终端的信件的数量。
结合第二方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括回执指示字段，该回执指示字段可以用于指示该信箱概况查询请求报文的接收设备(例如，北斗网络设备)是否需要向第一终端回复应用层回执。应用层回执可以用于指示接收设备是否成功接收该信箱概况查询请求报文。回执指示字段的长度可以是1bit。当该回执指示字段为数值D1(例如，0)时，可以用于指示该信箱概况查询请求报文的接收设备不需要向第一终端回复应用层回执。当该回执指示字段为数值D2(例如，1)时，可以用于指示该信箱概况查询请求报文的接收设备需要向第一终端回复应用层回执。
结合第二方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询请求报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第二方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询请求报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第二方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第二方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括白名单指示字段，在白名单指示字段为第四值的情况下，白名单指示字段用于指示信件数量字段中为非白名单内的一个第二终端发送给第一终端的信件的数量；在白名单指示字段为第五值的情况下，白名单指示字段用于指示信件数量字段中为白名单内的第二终端发送给第一终端的信件的数量、或所有第二终端发送给第一终端的信件的数量。
这样，第一终端接收到信箱概况查询结果报文后，知道如何解析信箱概况查询结果报文中的信件数量字段。
结合第二方面，在一种可能的实现方式中，信箱概况查询结果报文还包括消息类型指示字段，在消息类型指示字段为第六值的情况下，消息类型指示字段用于指示信箱概况查询结果报文用于查询一个或多个第二终端发送给第一终端的信件的数量；在消息类型指示字段为第七值的情况下，消息类型指示字段用于指示信箱概况查询结果报文用于下载一个或多个第二终端发送给第一终端的信件的内容。
这样，第一终端接收到信箱概况查询结果报文后，可以根据该信箱概况查询结果报文中的消息类型指示字段确定该信箱概况查询结果报文的类型。从而，第一终端可以正确解析该信箱概况查询结果报文。
结合第二方面，在一种可能的实现方式中，在信箱概况查询请求报文中的所述业务类型为第二值的情况下，信箱概况查询结果报文中的白名单指示字段为第四值，信箱概况查询结果报文中的消息类型指示字段为第六值；在信箱概况查询请求报文中的业务类型为第一值或第三值的情况下，信箱概况查询结果报文中的白名单指示字段为第五值，信箱概况查询结果报文中的消息类型指示字段为第六值。
结合第二方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询结果报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第二方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询结果报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第二方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第二方面，在一种可能的实现方式中，北斗网络设备接收到第一终端发送的信箱概况查询请求报文，包括：北斗网络设备接收到第一终端发送的X个SLC PDU；X为正整数；北斗网络设备在SLC层将X个SLC PDU拼成Y个SLC SDU；Y为正整数，Y小于或等于X，北斗网络设备将Y个SLC SDU上传至MDCP层，作为MDCP层的Y个MDCP PDU； 北斗网络设备在MDCP层将Y个MDCP PDU拼成MDCP SDU；北斗网络设备在MDCP层将MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询请求报文。
结合第二方面，在一种可能的实现方式中，基于所述信箱概况查询请求报文，北斗网络设备生成信箱概况查询结果报文，包括：北斗网络设备根据所述信箱概况查询请求报文，在短消息中心中查询一个或多个第二终端发送给第一终端的信件的数量；北斗网络设备基于一个或多个第二终端发送给第一终端的信件的数量，生成信箱概况查询结果报文。
结合第二方面，在一种可能的实现方式中，北斗网络设备向所述第一终端发送信箱概况查询结果报文，包括：北斗网络设备在应用APP层将信箱概况查询结果报文下发至北斗网络设备的消息数据汇聚MDCP层，作为MDCP层的MDCP服务数据单元SDU；北斗网络设备将MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；一个或多个MDCP PDU中包括第二MDCP PDU；北斗网络设备将第二MDCP PDU下发至卫星链路控制SLC层，作为SLC层的SLC SDU；北斗网络设备将SLC SDU拆分成一个或多个SLC PDU；北斗网络设备将一个或多个SLC PDU发送给第一终端。
第三方面，提供一种北斗通信系统，该系统可以包括终端和北斗网络设备，其中：
第一终端用于向北斗网络设备发送信箱概况查询请求报文，信箱概况查询请求报文用于查询一个或多个第二终端发送给第一终端的信件的数量，信箱概况查询请求报文中包括消息ID字段，消息ID字段用于指示第一终端上一次接收成功的第一信件的ID，第一信件的ID用于指示所述北斗网络设备删除所述第一信件；
北斗网络设备用于接收信箱概况查询请求报文；
北斗网络设备用于基于信箱概况查询请求报文，生成信箱概况查询结果报文，信箱概况查询结果报文中包括信件数量字段；信件数量字段用于指示一个或多个第二终端发送给所述第一终端的信件的数量，一个或多个第二终端发送给所述第一终端的信件的数量中不包括所述第一信件的数量；
北斗网络设备用于向第一终端发送信箱概况查询结果报文；
第一终端用于接收信箱概况查询结果报文。
这样，当第一终端所在的环境中没有蜂窝网络、或者无线局域网络的情况下，终端也可以获知其他终端有没有给第一终端发送信件，获知其他终端发送给第一终端的信件的数量。并且，第一终端获知其他终端发送给第一终端的信件的数量中不包括已经下载过的信件的数量。这样，北斗网络设备不会重复统计已经发送过的信件，将相同的信件重复发送给第一终端。
结合第三方面，在一种可能的实现方式中，信箱概况查询请求报文还包括业务类型字段，在业务类型字段为第一值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第二值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询非白名单内的第二终端发送给第一终端的信件的数量；在业务类型字段为第三值的情况下，业务类型字段用于指示信箱概况查询请求报文用于查询所有第二终端发送给第一终端的信件的数量；其中，第一终端中设置有白名单，白名单中用于存储与第一终端关联的第二终端的标识、以及与第一终端关联的第二终端的序号。
这样，第一终端可以通过该业务类型字段指定该信箱概况查询请求报文的具体业务类型。 北斗网络设备接收信箱概况查询请求报文后，也可以通过该业务类型字段获知该信箱概况查询请求报文的业务类型。
结合第三方面，在一种可能的实现方式中，在业务类型字段为第一值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段为白名单比特位图，白名单比特位图的第一比特位用于指示白名单内第一序号的第二终端的标识；在业务类型字段为第二值的情况下，信箱概况查询请求报文还包括发送方ID字段，发送方ID字段用于指示非白名单内的第二终端的手机号码。
这样，北斗网络设备接收到该信箱概况查询请求报文后，根据发送方ID字段中的标识可以确定要去查询哪个终端发送给第一终端的信件的数量。
结合第三方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括回执指示字段，该回执指示字段可以用于指示该信箱概况查询请求报文的接收设备(例如，北斗网络设备)是否需要向第一终端回复应用层回执。应用层回执可以用于指示接收设备是否成功接收该信箱概况查询请求报文。回执指示字段的长度可以是1bit。当该回执指示字段为数值D1(例如，0)时，可以用于指示该信箱概况查询请求报文的接收设备不需要向第一终端回复应用层回执。当该回执指示字段为数值D2(例如，1)时，可以用于指示该信箱概况查询请求报文的接收设备需要向第一终端回复应用层回执。
结合第三方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询请求报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第三方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询请求报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第三方面，在一种可能的实现方式中，信箱概况查询请求报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第三方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括白名单指示字段，在白名单指示字段为第四值的情况下，白名单指示字段用于指示信件数量字段中为非白名单内的一个第二终端发送给第一终端的信件的数量；在白名单指示字段为第五值的情况下，白名单指示字段用于指示信件数量字段中为白名单内的第二终端发送给第一终端的信件的数量、或所有第二终端发送给第一终端的信件的数量。
这样，第一终端接收到信箱概况查询结果报文后，知道如何解析信箱概况查询结果报文中的信件数量字段。
结合第三方面，在一种可能的实现方式中，信箱概况查询结果报文还包括消息类型指示字段，在消息类型指示字段为第六值的情况下，消息类型指示字段用于指示所述信箱概况查询结果报文用于查询一个或多个第二终端发送给第一终端的信件的数量；在消息类型指示字段为第七值的情况下，消息类型指示字段用于指示信箱概况查询结果报文用于下载一个或多个第二终端发送给第一终端的信件的内容。
这样，第一终端接收到信箱概况查询结果报文后，可以根据该信箱概况查询结果报文中的消息类型指示字段确定该信箱概况查询结果报文的类型。从而，第一终端可以正确解析该信箱概况查询结果报文。
结合第三方面，在一种可能的实现方式中，在信箱概况查询请求报文中的所述业务类型为第二值的情况下，信箱概况查询结果报文中的白名单指示字段为第四值，信箱概况查询结果报文中的消息类型指示字段为第六值；在信箱概况查询请求报文中的业务类型为第一值或第三值的情况下，信箱概况查询结果报文中的白名单指示字段为第五值，信箱概况查询结果报文中的消息类型指示字段为第六值。
结合第三方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括加密指示字段，该加密指示字段可以用于指示该信箱概况查询结果报文是否加密。
进一步地，在一种可能的实现方式中，加密指示字段的长度可以是2bit。
结合第三方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括压缩指示字段，该压缩指示字段可以用于指示该信箱概况查询结果报文是否压缩。
进一步地，在一种可能的实现方式中，压缩指示字段的长度可以是2bit。
结合第三方面，在一种可能的实现方式中，信箱概况查询结果报文中还包括应用层鉴权码字段，该应用层鉴权码字段可以用于应用层的鉴权。
进一步地，在一种可能的实现方式中，该应用层鉴权码字段的长度可以是16bit。
结合第三方面，在一种可能的实现方式中，第一终端具体用于：
在应用APP层将信箱概况查询请求报文下发至第一终端的消息数据汇聚MDCP层，作为MDCP层的MDCP服务数据单元SDU；
将MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；一个或多个MDCP PDU中包括第一MDCP PDU；
将第一MDCP PDU下发至卫星链路控制SLC层，作为SLC层的SLC SDU；
将SLC SDU拆分成一个或多个SLC PDU；第一终端将一个或多个SLC PDU发送给北斗网络设备。
结合第三方面，在一种可能的实现方式中，第一终端具体用于：
接收所述北斗网络设备发送的P个SLC PDU；P为正整数；
在SLC层将P个SLC PDU拼成Q个SLC SDU；Q为正整数，Q小于或等于P；
将Q个SLC SDU上传至MDCP层，作为MDCP层的Q个MDCP PDU；
在MDCP层将Q个MDCP PDU拼成MDCP SDU；
在MDCP层将MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询结果报文。
结合第三方面，在一种可能的实现方式中，第一终端还用于：解析出信箱概况查询结果报文中信件数量字段中一个或多个第二终端发送的第一终端的信件的数量；在显示屏中显示一个或多个第二终端发送的第一终端的信件的数量。
结合第三方面，在一种可能的实现方式中，北斗网络设备具体用于：
接收到第一终端发送的X个SLC PDU；X为正整数；
在SLC层将X个SLC PDU拼成Y个SLC SDU；Y为正整数，Y小于或等于X；
将Y个SLC SDU上传至MDCP层，作为MDCP层的Y个MDCP PDU；
在MDCP层将Y个MDCP PDU拼成MDCP SDU；
在MDCP层将MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询请求报文。
结合第三方面，在一种可能的实现方式中，北斗网络设备具体用于：根据所述信箱概况 查询请求报文，在短消息中心中查询一个或多个第二终端发送给第一终端的信件的数量；基于一个或多个第二终端发送给第一终端的信件的数量，生成信箱概况查询结果报文。
结合第三方面，在一种可能的实现方式中，北斗网络设备具体用于：
在应用APP层将信箱概况查询结果报文下发至北斗网络设备的消息数据汇聚MDCP层，作为MDCP层的MDCP服务数据单元SDU；
将MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；一个或多个MDCP PDU中包括第二MDCP PDU；
将第二MDCP PDU下发至卫星链路控制SLC层，作为SLC层的SLC SDU；
将SLC SDU拆分成一个或多个SLC PDU；北斗网络设备将一个或多个SLC PDU发送给第一终端。
结合第三方面，在一种可能的实现方式中，北斗网络设备还可以执行上述第二方面中任一种可能的实现方式中的方法。
结合第三方面，在一种可能的实现方式中，终端还可以执行上述第一方面中任一种可能的实现方式中的方法。
第四方面，本申请提供了一种通信装置，包括一个或多个处理器、一个或多个存储器和收发器。收发器、该一个或多个存储器与一个或多个处理器耦合，一个或多个存储器用于存储计算机程序代码，计算机程序代码包括计算机指令，当一个或多个处理器执行计算机指令时，使得通信装置执行上述第一方面任一项可能的实现方式中的方法。
其中，该通信装置可以为终端或其他产品形态的设备。
第五方面，本申请提供了一种通信装置，包括一个或多个处理器、一个或多个存储器和收发器。收发器、该一个或多个存储器与一个或多个处理器耦合，一个或多个存储器用于存储计算机程序代码，计算机程序代码包括计算机指令，当一个或多个处理器执行计算机指令时，使得通信装置执行上述第二方面任一项可能的实现方式中的方法。
其中，该通信装置可以为北斗网络设备，或北斗网络设备中的任一网元或多个网元的组合。
第六方面，本申请提供了一种计算机存储介质，包括计算机指令，当计算机指令在计算机上运行时，使得计算机执行上述第一方面任一项可能的实现方式中的方法。
第七方面，本申请提供了一种计算机存储介质，包括计算机指令，当计算机指令在计算机上运行时，使得计算机执行上述第二方面任一项可能的实现方式中的方法。
第八方面，本申请提供了一种计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行上述第一方面任一项可能的实现方式中的方法。
第九方面，本申请提供了一种计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行上述第二方面任一项可能的实现方式中的方法。
第十方面，本申请提供了一种芯片或芯片系统，应用于终端，包括处理电路和接口电路，接口电路用于接收代码指令并传输至所述处理电路，处理电路用于运行所述代码指令以执行上述第一方面任一项可能的实现方式中的方法。
附图说明
图1是本申请实施例提供的一种北斗通信系统10的架构示意图；
图2是本申请实施例提供的一种北斗通信协议层示意图；
图3是本申请实施例提供的一种北斗通信系统10的入站数据的协议封装架构示意图；
图4是本申请实施例提供的一种北斗通信系统10的入站数据的协议解析架构示意图；
图5是本申请实施例提供的一种北斗通信系统10的出站数据的协议封装架构示意图；
图6是本申请实施例提供的一种北斗通信系统10的出站数据的协议解析架构示意图；
图7是本申请实施例提供的一种北斗通信系统中的信箱概况查询方法流程示意图；
图8A-图8C是本申请实施例提供的一组用户界面示意图；
图8D是本申请实施例提供的终端的结构示意图；
图9为本申请实施例提供的一种通信装置的结构示意图；
图10为本申请实施例提供的另一种通信装置的结构示意图；
图11为本申请实施例提供的另一种通信装置的结构示意图；
图12为本申请实施例提供的另一种通信装置的结构示意图。
具体实施方式
本申请以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括复数表达形式，除非其上下文中明确地有相反指示。还应当理解，本申请中使用的术语“和/或”是指并包含一个或多个所列出项目的任何或所有可能组合。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为暗示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征，在本申请实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
下面介绍本申请实施例提供的一种北斗通信系统10。
图1示出了本申请实施例中的一种北斗通信系统10的架构示意图。
如图1所示，在北斗通信系统10中，北斗通信系统10可以包括终端100、北斗短报文卫星21、北斗网络设备200、短消息中心(short message service center，SMSC)41。
其中，终端100处于北斗网络下，即终端100中的北斗通信模块开启，终端100未驻留在蜂窝网络下。终端100可以通过北斗网络设备200查询驻留在蜂窝网络的一个或多个终端(例如，图1中示出的终端300)发送给终端100的短消息的数量。
具体地，终端100可以向北斗网络设备200发送信箱概况查询请求，该信箱概况查询请求用于向北斗网络设备200查询终端100接收到的信件的数量。北斗网络设备200基于该信箱概况请求，可以向短消息中心41查询其他终端发给终端100的信件的数量。然后，北斗网络设备200可以向终端100回复查询结果，即终端100接收到的信件的数量。
其中，北斗网络设备200中可以包括北斗地面接收站31、信号接收处理设备32、以及信号处理中心33、北斗地面发射站35、信号发送处理设备36、运行控制中心37以及北斗短报文融合通信平台34。
在一些实施例中，可以将信号处理中心33和运行控制中心37称为北斗中心站。在另一些实施例中，可以将信号接收处理设备32、信号处理中心33、信号发送处理设备36以及运行控制中心37称为北斗中心站。
示例性地，北斗地面接收站31可以接收到北斗短报文卫星21转发的终端100发送的查 询信箱概况请求。北斗地面接收站31可以将该查询信箱概况请求发送给信号接收处理设备32，然后信号接收处理设备32可以将该报文发送给信号处理中心33。信号处理中心33和北斗短报文融合通信平台34可以根据协议解析北斗短报文卫星21转发的查询信箱概况请求，并将解析出的查询信箱概况请求的内容转发给短消息中心(SMSC)41。短消息中心41可以根据查询信箱概况请求的内容查找其他终端发送给终端100的信件的数量。
在一些示例中，终端100还可以通过北斗网络设备200向终端300发送数据。
北斗网络设备200可以通过北斗短报文卫星21将数据发送给终端100。例如，终端100查询信箱概况，北斗网络设备200可以向终端返回信箱概况的查询结果。具体地，运行控制中心37可以将信箱概况的查询结果发送给信号发送处理设备36，然后信号发送处理设备36可以将信箱概况的查询结果发给北斗地面发射站35，北斗地面发射站35将信箱概况的查询结果发送给北斗短报文卫星21，经由北斗短报文卫星21中继后发送给终端100。运行控制中心37中的信箱概况查询结果也可以是从信号处理中心33中获取到的。
这里，北斗地面发射站35和北斗地面接收站31可以是由分别具有发送功能的一个或多个设备和具有接收功能的一个或多个设备组成，或者可以是具有发送功能和接收功能的一个或多个设备，此处不作限定。
这样，即使终端100处于北斗网络下，未驻留到蜂窝网络，例如，终端100处于没有蜂窝网络覆盖的地区，终端100也可以查询到是否有蜂窝网络下的终端给终端100发送信件，并且可以获知其他蜂窝网络下的终端发送给终端100的信件的数量。
在本申请实施例中，将发送给终端100的数据，例如消息，或者短消息、或者短信、邮件等等称为信件。具体，信件可以指无网状态下(即未驻留到蜂窝网络，也未连接到Wi-Fi)的用户A(例如，图1中示出的终端100)接收其他终端(例如，图1中示出的终端300)发送给用户A的短信息。信箱概况查询是指：用户发送查询消息给北斗网络设备200，北斗网络设备200中的北斗短报文融合通信平台34接收该查询消息。该查询消息中携带查询信息，该查询信息指示用户需要查询的短消息发送方的号码信息。信箱概况是指用户接收北斗网络设备200返回的信箱概况信息。该信箱概况信息不是具体的信箱中信件的内容，而是和查询信息对应的发送方的信件数量。举例来说，用户A查询父母是否有信息发送给他，返回的信箱概况信息为其父母发送的信件数量。
图2示出了本申请实施例中的一种北斗通信系统10的北斗通信协议层示意图。
如图2所示，北斗通信协议层可以包括应用(application layer protocol，APP)层、消息数据汇聚(message data convergence protocol，MDCP)层、卫星链路控制层(satellite link control protocol，SLC)层和物理(physical layer protocol，PHY)层。
北斗地面接收站31、北斗地面发射站35可用于北斗网络设备200在PHY层对数据的处理功能。信号接收处理设备32、信号发送处理设备36、信号处理中心33、运行控制中心37可用于北斗网络设备200在SLC层和MDCP层对数据的处理功能。北斗短报文融合通信平台34可用于在APP层对数据的处理功能。
目前只有专用终端可以在无网状态下接收经由北斗卫星转发的短消息(后面称信件)。具体过程是当专用终端捕获跟踪到北斗信号，主动发起开机报告，短报文收发处理系统站接收到该消息后，如果有该用户的缓存消息(后面称信件)，则直接下发该用户的所有信件，根据用户的回执(针对接收信件情况的反馈信息)，北斗网络设备200决定是否删除缓存信件。这 里缓存的信件是通过北斗系统搭建的专用服务器进行通信管理，没有蜂窝的运营商网元直接参与管理，使用范围受限。
针对北斗卫星短报文的大众民用终端信箱机制目前还是空白，本申请实施例对北斗通信系统中的数传协议进行全新设计，主要包括信箱概况查询部分。
在本申请实施例中，终端100向北斗网络设备200发送数据可以称为入站，终端100向北斗网络设备200发送的数据可以称为入站数据。北斗网络设备200向终端100发送数据可以称为出站，北斗网络设备200向终端100发送的数据可以称为出站数据。
下面介绍终端100向北斗网络设备200发送信箱概况查询请求时，终端100对该信箱概况查询请求的封装过程。以及北斗网络设备200接收到该信箱概况查询请求时，北斗网络设备200对该信箱概况查询请求的解析过程。
下面介绍本申请实施例中提供的一种北斗通信系统10的入站数据的协议封装架构。
图3示出了本申请实施例中提供的一种北斗通信系统10的入站数据的协议封装架构示意图。
如图3所示，终端100上的北斗报文传输协议层可以分为应用层(application layer protocol，APP)、消息数据汇聚层(message data convergence protocol，MDCP)、卫星链路控制层(satellite link control protocol，SLC)和物理层(physical layer protocol，PHY)。
终端100发送数据给北斗网络设备200时，终端100上的北斗报文传输协议的工作流程可以如下：
在APP层，终端100可以将原始数据(例如，信箱概况查询请求)封装成应用层报文，然后，终端100可以通过层间接口将该应用层报文发送给MDCP层。该应用层报文的格式将在下文中具体介绍，此处不再赘述。
在MDCP层，终端100可以通过层间接口获取到APP层下发的应用层报文，并将应用层报文作为一个MDCP服务数据单元(service data unit，SDU)。在MDCP层，终端100可以在MDCP SDU的尾部添加填充数据(padding)至指定长度，并在MDCP SDU的头部添加冗余长度指示字段。该冗余长度指示字段可用于表示该填充数据的长度。终端100可以将填充数据以及增加冗余长度指示字段之后的MDCP SDU，拆分成一个或多个固定长度的MDCP分段数据(M_segement)，并在每个MDCP分段数据的头部添加后继指示字段，得到MDCP协议数据单元(protocol data unit，PDU)，即MDCP PDU包括M_segement和后继指示字段。其中，后继指示字段可用于表示当前的MDCP PDU是连续发送的多个MDCP PDU的起始MDCP PDU或中间MDCP PDU或最后一个MDCP PDU；或者是单独发送的一个MDCP PDU。
在SLC层，终端100可以通过层间接口获取到MDCP层下发的MDCP PDU，作为SLC SDU。在SLC层，终端100可以将SLC SDU分段成一个或多个(最多4个)固定长度的SLC分段数据(S_segement)，并在每个S_segement头部添加帧头信息，得到SLC PDU。其中，帧头信息中包括服务数据单元交替指示(service data unit alternated Indicator，SAI)字段、帧总数字段和帧序号字段。
其中，SAI字段可用于表示该SLC PDU是否属于一个未发送过的SLC SDU。
帧总数字段，可用于表示该SLC PDU所属的SLC SDU中包括SLC PDU的总数量。
帧序号字段，可用于表示该SLC PDU在所属的SLC SDU中的序号。
在PHY层，终端100可以通过层间接口获取到SLC层下发的SLC PDU，作为PHY层 的编码块(code block)，并在code block的头部添加同步头，在code block的尾部添加校验位字段。其中，在上述北斗通信系统10中，可以采用循环冗余校验(cyclic redundancy check，CRC)对编码块进行校验，因此，该校验位字段中可以包括CRC码。终端100可以code block和校验位字段进行编码(例如polar编码)，得到编码数据(coded data)，再在coded data中插入导频，得到导频编码数据(pilot+data)。然后，终端100通过底层硬件对同步头和导频编码数据依次进行调制得到调制数据(modulated data)。终端100可以对调制数据进行扩频，得到扩频调制数据(spread+modulated data)。终端100可以将扩频调制数据发送给北斗短报文卫星21，经由北斗短报文卫星21中继转发给北斗网络设备200。
下面介绍本申请实施例中提供的一种北斗通信系统10的入站数据的协议解析架构。
图4示出了本申请实施例中提供的一种北斗通信系统10的入站数据的协议解析架构示意图。
如图4所示，北斗网络设备200的北斗短报文传输协议层可以分为应用层(application layer protocol，APP)、消息数据汇聚层(message data convergence protocol，MDCP)、卫星链路控制层(satellite link control protocol，SLC)和物理层(physical layer protocol，PHY)。其中，北斗网络设备200中可以包括北斗地面接收站31、信号接收处理设备32、以及信号处理中心33、北斗地面发射站35、信号发送处理设备36、运行控制中心37以及北斗短报文融合通信平台34。
北斗地面接收站31、北斗地面发射站35可用于北斗网络设备200在PHY层对数据的处理功能。信号接收处理设备32、信号发送处理设备36、信号处理中心33、运行控制中心37可用于北斗网络设备200在SLC层和MDCP层对数据的处理功能。北斗短报文融合通信平台34可用于在APP层对数据的处理功能。
北斗网络设备200在接收到终端100发送的数据时，北斗网络设备200的北斗短报文传输协议层的工作流程可以如下：
在PHY层，北斗网络设备200可以获取到终端100发送的经过调制和扩频后的导频编码数据。北斗网络设备200可以对接收到的扩频调制数据(spread+modulated data)进行解扩频，得到调制数据(modulated data)。然后，北斗网络设备200可以对调制数据进行解调，得到导频编码数据(pilot+data)。接着，北斗网络设备200去除导频编码数据中的导频信息，得到编码数据(code data)。然后，北斗网络设备200可以对编码数据进行解码，并通过校验位字段中的校验数据验证编码块(code block)的完整性。若完整，则北斗网络设备200可以提取出编码块(code block)，通过层间接口呈递给SLC层，作为SLC层的SLC PDU。
在SLC层，北斗网络设备200可以基于SLC PDU的帧头信息，将属于同一个SLC SDU的SLC PDU拼接成一个SLC SDU。北斗网络设备200可以将SLC SDU通过层间接口呈递给MDCP层，作为MDCP层的MDCP PDU。
在MDCP层，北斗网络设备200可以将属于同一个MDCP SDU的所有MDCP PDU拼接成一个MDCP SDU。北斗网络设备200可以将MDCP SDU通过层间接口呈递到APP层，作为APP层接收到的应用层报文。
在APP层，北斗网络设备200可以基于应用层报文的报文头，对应用层报文进行解密、解压缩，得到原始数据。该原始数据可以是信箱概况查询请求。
本申请实施例中，上述协议处理过程仅为示例说明，本申请对协议处理的具体操作不作 限定。
北斗网络设备200收到终端100发送的信箱概况查询请求后，北斗网络设备200可以向终端100回复信箱概况的查询结果。下面介绍北斗网络设备200向终端100发送信箱概况的查询结果时，北斗网络设备200对该信箱概况的查询结果的封装过程。以及终端100接收到该信箱概况的查询结果时，终端100对该信箱概况的查询结果的解析过程。
下面介绍本申请实施例中提供的一种北斗通信系统10的出站数据的协议封装架构。
图5示出了本申请实施例中提供的一种北斗通信系统10的出站数据的协议封装架构示意图。
如图5所示，北斗网络设备200的北斗短报文传输协议层可以分为应用层(application layer protocol，APP)、消息数据汇聚层(message data convergence protocol，MDCP)、卫星链路控制层(satellite link control protocol，SLC)和物理层(physical layer protocol，PHY)。其中，北斗网络设备200中可以包括北斗地面接收站31、信号接收处理设备32、以及信号处理中心33、北斗地面发射站35、信号发送处理设备36、运行控制中心37以及北斗短报文融合通信平台34。
北斗地面接收站31、北斗地面发射站35可用于北斗网络设备200在PHY层对数据的处理功能。信号接收处理设备32、信号发送处理设备36、信号处理中心33、运行控制中心37可用于北斗网络设备200在SLC层和MDCP层对数据的处理功能。北斗短报文融合通信平台34可用于在APP层对数据的处理功能。
北斗网络设备200发送数据给终端100时，北斗网络设备200中的北斗短报文传输协议的工作流程可以如下：
在APP层，北斗网络设备200可以将原始数据(例如，信箱概况的查询结果)封装成应用层报文。然后，北斗网络设备200可以通过层间接口将该应用层报文发送给MDCP层。该应用层报文的格式将在下文中具体介绍，此处不再赘述。
可选地，在一种可能的实现方式中，北斗网络设备200在MDCP层将MDCP SDU切分成多个MDCP PDU，北斗网络设备200可以将多个MDCP PDU一并传输到北斗网络设备200的SLC层。
在MDCP层，北斗网络设备200可以通过层间接口获取到APP层下发的应用层报文，并将应用层报文作为一个MDCP SDU。在MDCP层，北斗网络设备200可以将一个MDCP SDU拆分成一个或多个固定长度的MDCP分段数据(M_segement)，并在每个MDCP分段数据的头部添加后继指示字段，得到MDCP PDU，即MDCP PDU包括M_segement和后继指示字段。其中，后继指示字段可用于表示当前的MDCP PDU是连续发送的多个MDCP PDU的起始MDCP PDU或中间MDCP PDU或最后一个MDCP PDU；或者是单独发送的一个MDCP PDU。
在SLC层，北斗网络设备200可以通过层间接口获取到MDCP层下发的MDCP PDU，作为SLC SDU。在SLC层，北斗网络设备200可以将SLC SDU分段成一个或多个(最多4个)固定长度的SLC分段数据(S_segement)，并在每个S_segement头部添加帧头信息，得到SLC PDU。
在PHY层，北斗网络设备200可以通过层间接口获取到SLC层下发的SLC PDU。北斗 网络设备200可以从SLC层获取到一个用户或多个用户的SLC PDU。北斗网络设备200可以将多个用户的SLC PDU拼接在一起，再加上物理帧的帧头(例如版本号)作为PHY层的编码块(code block)，并在code block的尾部添加校验位(例如，循环冗余校验(cyclic redundancy check，CRC)码)，并对code block和CRC码进行编码(例如polar编码)，编码后的物理帧加上保留段可以组成一个固定长度的物理时隙的电文支路(S2C_d支路)的编码数据。其中，北斗网络设备200可以将一个用户的多个SLC PDU分别放到不同的物理帧中。然后，北斗网络设备200将S2C_d支路的编码数据和导频支路(S2C_p支路)的导频信息组成导频编码数据，即出站数据。北斗网络设备200可以将出站数据发送给北斗短报文卫星21，经由北斗短报文卫星21中继转发给终端100。
可以理解的是，S2C_p支路的导频信息与卫星波束相关。当卫星波束号时已知信息时，S2C_p支路的导频信息也是已知的，无需解码的。而S2C_d支路的编码数据是需要解码的。
下面介绍本申请实施例中提供的一种北斗通信系统10的出站数据的协议解析架构。
图6示出了本申请实施例中提供的一种北斗通信系统10的出站数据的协议解析架构示意图。
如图6所示，终端100的北斗短报文传输协议层可以分为应用层(application layer protocol，APP)、消息数据汇聚层(message data convergence protocol，MDCP)、卫星链路控制层(satellite link control protocol，SLC)和物理层(physical layer protocol，PHY)。
终端100在接收到北斗网络设备发送的数据时，终端100的北斗短报文传输协议层的工作流程可以如下：
在PHY层，终端100可以获取到北斗网络设备200发送的经过调制和扩频后的导频编码数据。终端100可以对接收到的扩频调制数据(spread+modulated data)进行解扩频，得到调制数据(modulated data)。然后，终端100可以对调制数据进行解调，得到导频编码数据(pilot+data)。接着，终端100可以去除导频编码数据中的导频信息，得到编码数据(code data)。然后，终端100可以对编码数据进行解码，并通过校验位字段中的校验数据验证编码块(code block)的完整性。若完整，则终端100可以提取出编码块(code block)，通过层间接口呈递给SLC层，作为SLC层的SLC PDU。
这里，该导频编码数据即为上述北斗网络设备200发送的出站数据，该出站数据由S2C_d支路的编码数据和导频支路(S2C_p支路)的导频信息组成。
在SLC层，终端100可以基于SLC PDU的帧头信息，将属于同一个SLC SDU的SLC PDU拼接成一个SLC SDU。终端100可以将SLC SDU通过层间接口呈递给MDCP层，作为MDCP层的MDCP PDU。
在MDCP层，终端100可以将属于同一个MDCP SDU的所有MDCP PDU拼接成一个MDCP SDU。终端100可以将MDCP SDU通过层间接口呈递到APP层，作为APP层接收到的应用层报文。
在APP层，终端100可以基于应用层报文的报文头，对应用层报文进行解密、解压缩，得到原始数据。
本申请实施例中，上述协议处理过程仅为示例说明，本申请对协议处理的具体操作不作限定。
在本申请实施例中，提供一种北斗通信系统中的信箱概况查询方法，该方法可以包括：终端100可以向北斗网络设备200发送信箱概况查询请求报文，信箱概况查询请求报文中包含业务类型字段、消息ID字段；业务类型字段用于指示信箱概况查询请求报文的业务类型，消息ID字段用于指示终端上一次接收成功的信件的ID。终端接收北斗网络设备200发送的信箱概况查询结果报文；信箱概况查询结果报文中包含白名单指示字段和信件数量字段；白名单指示字段用于终端100如何解析信件数量字段；信件数量字段用于指示一个或多个目标终端发给终端100的信件数量，这样，用户在北斗网络下，也可以查询到其他用户是否有发送信件给终端100。
图7示例性地示出了本申请实施例提供的一种北斗通信系统中的信箱概况查询方法的方法流程示意图。如图7所示，本申请实施例提供的一种北斗通信系统中的信箱概况查询方法可以包括如下步骤：
S701、终端100基于用户操作，生成信箱概况查询请求报文，信箱概况查询请求报文用于查询一个或多个目标终端发送给终端100的信件的数量。
终端100处于北斗网络下，即终端100处于无蜂窝网络和无线局域网络的场景下，终端100未驻留到蜂窝网络，终端100中的北斗通信模块开启。终端100可以通过该北斗通信模块与北斗网络设备200通信。终端100可以通过北斗网络查询一个或多个目标终端发送给终端100的信件的数量。一个或多个目标终端的标识可以存在于终端100配置的白名单内，或者一个或多个目标终端的标识也可以不存在与终端100配置的白名单内。
在本申请实施例中，终端100可以称为第一终端，一个或多个目标终端可以称为一个或多个第二终端。
终端100中可以配置有白名单，该白名单包括与终端100相关联的N个终端的标识和该标识在白名单中的序号。例如，N个终端的标识可以是N个终端中每个终端的手机号码。可选地，终端100配置的白名单可以存储在终端100和北斗网络设备200(例如，北斗短报文融合通信平台34)中。可选地，终端100配置的白名单还可以存储于终端100的标识对应的运营商(例如，中国移动、中国联通、中国电信)的服务器(例如，图1中示出的短消息中心41)中，本申请实施例对此不作限定。
可以理解的是，在白名单中，N个终端的标识的序号是可以调整的。
在本申请实施例中，终端的标识可以是终端的手机号码，登录号码、国际移动设备识别码(international mobile equipment identity，IMEI)、国际移动用户识别码(international mobile subscriber identification number，IMSI)、移动用户国际综合业务数字网号码(mobile subscriber international integrated service digital network number，MSISDN)。下文以终端的标识为手机号码为例进行阐述。
当终端100的用户想要查询目标终端发送给终端100的信件的数量时，用户可以点击终端100用于查询信箱概况的控件。基于用户点击终端100用于查询信箱概况的控件，终端100可以生成信箱概况查询请求报文。
终端100可以查询一个目标终端发送给终端100的信件的数量，也可以查询一个或多个蜂窝网络下的目标终端发送给终端100的信件的数量。
在一种可能的实现方式中，若目标终端A的标识(例如，手机号码)在白名单内，用户可以在终端100确定要查询目标终端A发送给终端100的信件的数量，例如，用户可以在终端100中输入该目标终端A在白名单中的序号，或者，用户也可以在终端100中输入该目标终端 A的手机号码。然后，用户可以在终端100中点击用于查询信箱概况的控件。
在本申请实施例中，可以将标识在白名单中的目标终端称为白名单内的目标终端，将标识不在白名单中的目标终端称为非白名单内的目标终端。
在一种可能的实现方式中，若目标终端B的标识(例如，手机号码)不在白名单内，用户可以在终端100中确定要查询目标终端B发送给终端100的信件的数量，例如，用户可以在终端100中输入目标终端B的手机号码。然后，用户可以在终端100中点击用于查询信箱概况的控件。
进一步地，终端100中可以存在控件1、控件2、控件3。其中，控件1可以用于查询白名单中一个或多个目标终端发送给终端100的信件的数量。控件2用于查询非白名单内的单个目标终端发送终端100的信件的数量。控件3用于查询所有目标终端，即白名单内所有目标终端和非白名单内的目标终端发送给终端100的信件的数量。
在一种可能的实现方式中，信箱概况查询请求报文的格式可以如下表1所示。
表1
Figure PCTCN2022110306-appb-000001
如上表1所示，信箱概况查询请求报文可以包括回执指示字段、业务类型字段、加密指示字段、压缩指示字段、应用层鉴权码字段、发送方ID字段、消息ID字段。可以理解的是，本申请实施例中的信箱概况查询请求报文中包含具体字段以及字段的排列顺序不作限定。例如，当信箱概况查询请求报文默认不需要应用层回执时，该信箱概况查询请求报文中可以不包含回执指示字段。
表1中示出的信箱概况查询请求报文中各个字段的具体说明可以如下表2所示。表2示例性地示出表1中各个字段对应的长度以及具体说明。
表2
Figure PCTCN2022110306-appb-000002
Figure PCTCN2022110306-appb-000003
如表2所示，回执指示字段可以用于指示该信箱概况查询请求报文的接收设备(例如，北斗网络设备200)是否需要向终端100回复应用层回执。应用层回执可以用于指示接收设备是否成功接收该信箱概况查询请求报文。回执指示字段的长度可以是1bit。当该回执指示字段为数值D1(例如，0)时，可以用于指示该信箱概况查询请求报文的接收设备不需要向终端100回复应用层回执。当该回执指示字段为数值D2(例如，1)时，可以用于指示该信箱概况查询请求报文的接收设备需要向终端100回复应用层回执。可以理解的是，本申请实施例对回执指示字段的长度以及回执指示字段的具体取值不作限定。
如表2所示，业务类型字段可以用于指示该信箱概况查询请求报文的业务类型。在北斗通信系统中，报文的业务类型可以包括通用报文、信箱业务(包括信箱概况查询业务。信件下载业务)等等。该业务类型字段的长度可以是3bit。可以理解的是，本申请实施例对该业务类型字段的长度不作限定。当业务类型的种类越来越多时，该业务类型的字段的长度可以越来越长。本申请实施例以业务类型字段的长度为3bit为例进行举例说明。当该业务类型字段为000时，指示该信箱概况查询请求报文的业务类型为通用报文。当业务类型字段为001时，指示该信箱概况查询请求报文的业务类型可以是信箱业务中的信箱概况查询业务，且该信箱概况查询请求报文仅查询白名单内目标终端发送给该终端100的信件的数量。当业务类型字段为010时，指示该信箱概况查询请求报文的业务类型为信箱业务中的信箱概况查询业务，具体为查询所有目标终端(包括白名单内的目标终端和非白名单内的目标终端)发送给该终端100的信件的数量。当业务类型字段为011时，指示该信箱概况查询请求报文的业务类型为信箱业务中的信箱概况查询业务，具体可以为查询单独的非白名单内的目标终端发送给该终端100的信件的数量。当业务类型字段为100时，指示该信箱概况查询请求报文的业务类型为信箱业务中的信件下载业务，具体可以为下载白名单内目标终端发送给该终端100的信件。当业务类型字段为101时，指示该信箱概况查询请求报文的业务类型为信箱业务中的信件下载业务，具体可以下载为所有目标终端发送给该终端用户的信件。当业务类型字段为110时，指示该信箱概况查询请求报文的业务类型为信箱业务中用于信件下载业务，具体可以为下载单独的非白名单用户发送给该终端用户的信件。“111”为保留字段。
在一种可能的实现方式中，当信箱概况查询请求报文的业务类型为查询所有目标终端发送给该终端100的信件的数量时，该信箱概况查询请求报文可以不包括发送方ID字段。
如表2所示，加密指示字段可以用于指示该信箱概况查询请求报文是否加密。示例性地，加密指示字段的长度可以是2bit。当加密指示字段为数值D3(例如，00)时，指示该信箱概况查询请求报文未加密。可以理解的是，本申请实施例对该加密指示字段的长度和加密指示字段的具体取值不作限定。
如表2所示，压缩指示字段可以用于指示该信箱概况查询请求报文是否压缩。示例性 地，压缩指示字段的长度可以是2bit。当加密指示字段为数值D4(例如，00)时，指示该信箱概况查询请求报文未压缩。可以理解的是，本申请实施例对该压缩指示字段的长度和压缩指示字段的具体取值不作限定。
如表2所示，应用层鉴权码字段可以用于应用层的鉴权。示例性地，该应用层鉴权码字段的长度可以是16bit。可以理解的是，本申请实施例对该应用层鉴权码字段的长度不作限定。
如表2所示，发送方ID字段可以用于指示终端100要查询的发送给终端100信件的数量的目标终端的标识。若目标终端在终端100配置的白名单内，那么发送方ID字段中为白名单bitmap。若目标终端不在终端100配置的白名单内，那么发送方ID字段中为目标终端的标识(例如，手机号码)。
白名单中包含N个目标终端的标识，那么该白名单bitmap的长度可以是Nbit。例如，若白名单中包含10个目标终端的标识，那么该白名单bitmap的长度可以是10bit。在本申请实施例中，N为整数，对N的具体取值不作限度。下文以N等于10为例进行阐述。
示例性地，终端100中配置的白名单可以如下表3所示。
表3
Figure PCTCN2022110306-appb-000004
如表3所示，终端100配置的白名单内可以包括10个目标终端的标识以及10个目标终端分别对应的序号。可以理解的是，不同的用户设置的白名单可以不相同，上述表3示出的白名单仅为示例，本申请实施例对白名单内的具体终端的标识和序号不作限定。
示例性地，以表3示出的白明单为例，白名单可以如下表4或表5所示。
表4
Figure PCTCN2022110306-appb-000005
Figure PCTCN2022110306-appb-000006
表5
Figure PCTCN2022110306-appb-000007
如表4所示，白名单bitmap，可以占10个bit，其中，白名单中的每个目标终端的标识占1个bit。在一种可能的实现方式中，白名单中序号为1的目标终端的标识可以占10bit中的最高比特位(most significant bit，MSB)，即bit9。然后白名单中序号为10的目标终端的标识可以占10bit中的最低比特位(least significant bit，LSB)，即bit0。白名单中序号为2的目标终端的标识可以占10bit中的bit8。白名单中序号为3的目标终端的标识可以占10bit中的bit7。白名单中序号为4的目标终端的标识可以占10bit中的bit6。白名单中序号为5的目标终端的标识可以占10bit中的bit5。白名单中序号为6的目标终端的标识可以占10bit中的bit4。白名单中序号为7的目标终端的标识可以占10bit中的bit3。白名单中序号为8的目标终端的标识可以占10bit中的bit2。白名单中序号为9的目标终端的标识可以占10bit中的bit1。举例来说，若用户想要查询白名单中序号为1的目标终端发送给终端100的信件的数量，那么终端100填入发送方ID字段中的白名单bitmap可以是“1000000000”。
可选地，在一种可能的实现方式中，如表5所示，白名单中序号为10的目标终端的标识可以占10bit中的MSB，即bit9。然后白名单中序号为1的目标终端的标识可以占10bit中的LSB，即bit0。白名单中序号为9的目标终端的标识可以占10bit中的bit8。白名单中序号为8的目标终端的标识可以占10bit中的bit7。白名单中序号为7的目标终端的标识可以占10bit中的bit6。白名单中序号为6的目标终端的标识可以占10bit中的bit5。白名单中序号为5的目标终端的标识可以占10bit中的bit4。白名单中序号为4的目标终端的标识可以占10bit中的bit3。白名单中序号为3的目标终端的标识可以占10bit中的bit2。白名单中序号为2的目标终端的标识可以占10bit中的bit1。举例来说，若用户想要查询白名单中序号为1的目标终端发送给终端100的信件的数量，那么终端100填入发送方ID字段中的白名单bitmap可以是“0000000001”。
若用户查询非白名单内的目标终端发送给终端100的信件的数量，那么发送方ID字段中包含该目标终端的手机号码，该发送方ID字段的长度可以是44bit，或者34bit，此处不作限定。举例来说，终端100的用户想要查询手机号码为“158xxxxxxxx”的目标终端发送给终端100的信件的数量。该目标终端不在终端100的白名单中，则终端100可以该目标终端的手机号码“158xxxxxxxx”编码成44bit的二进制数据填入到发送方ID字段中。或者，终端100也可以将该目标终端的手机号码“158xxxxxxxx”压缩后编码成34bit的二进制数据填入到发送方ID字段中。
如表2所示，消息ID字段可以用于指示终端100上一次接收成功的第一信件的ID。终端 100上一次接收成功的第一信件是指在用户点击用于查询信箱概况的控件之前，终端100接收到的信件中的接收时间与点击用于查询信箱概况的控件时间隔间最短的信件。第一信件由目标终端发送给第一终端，具体地，目标终端先将该第一信件发送到短消息中心41中，然后，当终端100侧发起信件下载时，北斗网络设备200可以从短消息中心41中获取到该第一信件后发送给终端100。
可选地，当终端100接收第一信件后，北斗网络设备200可以收到终端100成功下载该第一信件的通知。收到该成功下载该第一信件的通知后，北斗网络设备可以通知该短消息中心41删除第一信件的内容。该短消息中心可以保留有该第一信件的ID和发送时间。第一信件的发送时间可以指目标终端发送给第一信件的时间，即目标终端将第一信件发送给短消息中心41的时间。
可选地，若终端100第一次向北斗网络设备200发送信箱概况查询请求，即终端100之前没有接收过信件，那么该消息ID字段中可以为初始值(例如，0)。当该消息ID字段中为初始值时，指示该信箱概况查询请求报文用于查询从短消息中心41中保存的发送给终端100的第一个信件的发送时间开始，一个或多个目标终端发送给终端100的信件的数量。
S702、终端100将信箱概况查询请求报文分段成一个或多个卫星链路控制SLC层协议数据单元PDU1。
具体地，终端100可以通过层间接口将信箱概况查询请求报文下发至MDCP层。终端100可以在MDCP层将信箱概况查询请求报文分段成一个或多个MDCP PDU。然后，终端100再将一个或多个MDCP PDU下发至SLC层。终端100可以在SLC层将每一个MDCP PDU分段成一个或多个SLC PDU1。在SLC层，终端100可以在每个SLC PDU1的帧头中的用户ID字段中填入终端100的标识(例如，终端100的手机号码)。这里具体可以参考图3中北斗通信系统10中入站数据封装过程的描述，此处不再赘述。
S703、终端100向北斗网络设备200发送一个或多个SLC PDU1。
终端100可以将一个或多个SLC PDU1发送给北斗网络设备200。具体地，终端100可以发送完一个SLC PDU1，收到北斗网络设备200回复的成功接收该SLC PDU1后，再向北斗网络设备200发送第二个SLC PDU1。可选地，终端100也可以依次地将一个或多个SLC PDU1发送给北斗网络设备200，北斗网络设备200在接收完全部的SLC PDU1后再向终端100回复成功接收SLC PDU1。
S704、北斗网络设备200接收一个或多个SLC PDU1。
北斗网络设备200可以接收到一个或多个SLC PDU1。
在一种可能的实现方式中，当北斗网络设备200收齐一个或多个SLC PDU1后，向终端100回复已收齐该一个或多个SLC PDU1。当终端100已发送完一个或多个SLC PDU1，但北斗网络设备200未收齐一个或多个SLC PDU1时，北斗网络设备200可以向终端100发送确认信息反馈(Acknowledge，ACK)帧，该ACK帧用于指示北斗网络设备200未收齐SLC PDU1。终端100可以再次向北斗网络设备200发送北斗网络设备200未收齐的SLC PDU1。
进一步地，北斗网络设备200可以在SLC层解析出每个SLC PDU1的帧头中的用户ID字段中的终端100的标识(例如，手机号码138xxxxxxxx)。
S705、北斗网络设备200将一个或多个SLC PDU1拼成信箱概况查询请求报文。
具体地，北斗网络设备200可以将终端100发送的一个或多个SLC PDU1在SLC层拼成一 个或多个SLC SDU。然后，北斗网络设备200将该一个或多个SLC SDU上传至MDCP层作为MDCP层的一个或多个MDCP PDU。然后，北斗网络设备200可以在MDCP层将一个或多个MDCP PDU拼成MDCP SDU。然后，北斗网络设备200可以将MDCP SDU上传至APP层作为信箱概况查询请求报文。这里可以参考图4中北斗通信系统的入站数据的解封装过程的描述，此处不再赘述。
S706、北斗网络设备200基于信箱概况查询请求报文，生成信箱概况查询结果报文，该信箱概况查询结果报文用于指示目标终端发送给终端100的信件的数量。
北斗网络设备200可以基于信箱概况查询请求报文，在短消息中心41中查询发送给终端100的信件的数量。然后，北斗网络设备200可以将查询的结果生成信箱概况查询结果报文，该信箱概况查询结果报文用于指示目标终端发送给终端100的信件的数量。
具体地，在一种可能的实现方式中，当信箱概况查询请求报文指示查询所有目标终端发送给终端100的信件的数量时，北斗网络设备200可以根据从SLC PDU1中解析出的终端100的标识(例如，终端100的手机号码138xxxxxxxx)和信箱概况查询请求报文中的消息ID字段中解析出终端100上一次接收到的信件的ID(例如“1”)去短消息中心41中查询除信件ID为1的信件之外，所有目标终端发送给手机号码138xxxxxxxx的信件的数量。
可选地，在另一种可能的实现方式中，当信箱概况查询请求报文指示查询白名单内目标终端发送给终端100的信件的数量时，北斗网络设备200可以从SLC PDU1中解析出的终端100的标识(例如，终端100的手机号码138xxxxxxxx)。北斗网络设备200还可以通过北斗网络设备中存储的终端100对应的白名单，从信箱概况查询请求报文的发送方ID字段中的白名单bitmap中解析出白名单内目标终端的标识(例如，手机号码“13xxxxxxxx0”)，以及从消息ID字段解析出终端100上一次接收到的信件的ID(例如，“1”)。北斗网络设备200可以根据终端100的标识，白名单内目标终端的标识，以及终端100上一次接收到的信件的ID，在短消息中心41中查询除信件ID为1的信件之外，白名单内手机号码13xxxxxxxx0发送给手机号码138xxxxxxxx的信件的数量。可选地，在另一种可能的实现方式中，当信箱概况查询请求报文指示查询单个非白名单内目标终端发送给终端100的信件的数量时，北斗网络设备200可以从SLC PDU1中解析出的终端100的标识(例如，终端100的手机号码138xxxxxxxx)。北斗网络设备200还可以从信箱概况查询请求报文的发送方ID字段中解析出非白名单内目标终端的标识(例如，手机号码“158xxxxxxx0”)，以及从消息ID字段解析出终端100上一次接收到的信件的ID(例如，“1”)。北斗网络设备200可以根据终端100的标识，白名单内目标终端的标识，以及终端100上一次接收到的信件的ID，在短消息中心41中查询除信件ID为1的信件之外，白名单内手机号码158xxxxxxx0发送给手机号码138xxxxxxxx的信件的数量。
进一步地，若北斗网络设备200中还保存有信件ID为1的信件，那么北斗网络设备200在收到该信箱概况查询请求报文后，基于信箱概况查询请求报文中的消息ID字段删除信件ID为1的信件。这样，北斗网络设备200不会重复统计已经发送过的信件，将相同的信件重复发送给终端100。可以理解的是，短消息中心41中可以存储有不同终端发送给终端100的信件的数量。示例性地，短消息中心41中存储的不同终端发送给终端100的信件的数量的格式可以如下表6A所示。
表6A
Figure PCTCN2022110306-appb-000008
Figure PCTCN2022110306-appb-000009
如表6A所示，短消息中心41中可以存储有不同手机号码的接收方，以及信件的发送时间。例如，接收方为手机号码138xxxxxxxx(即是上文描述的终端100的手机号码)，以及该手机号码138xxxxxxxx对应的白名单内的发送方(例如，手机号码13xxxxxxxx0、手机号码13xxxxxxxx1等等)、非白名单内的发送方(例如，手机号码158xxxxxxx0、手机号码158xxxxxxx1等等)、以及信件发送时间等等。接收方为手机号码136xxxxxxxx，以及该手机号码136xxxxxxxx对应的白名单内的发送方(例如，手机号码159xxxxxxx0、手机号码159xxxxxxx1等等)、非白名单内的发送方(例如，手机号码166xxxxxxx0、手机号码166xxxxxxx1等等)、以及信件发送时间等等。下面以接收方为手机号码“138xxxxxxxx”为例进行具体说明。
具体地，如表6A所示，13xxxxxxxx0在手机号码138xxxxxxxx对应的白名单内。该手机号码13xxxxxxxx0给手机号码138xxxxxxxx发送了两封信件，信件的发送时间分别为在“2021/09/01 08:00:00”和“2021/09/01 18:30:05”。
具体地，如表6A所示，13xxxxxxxx1在手机号码138xxxxxxxx对应的白名单内。该手机号码13xxxxxxxx1给手机号码138xxxxxxxx发送了两封信件，信件的发送时间分别为“2021/09/01 14:30:05”和“2021/09/01 19:35:40”。
具体地，如表6A所示，158xxxxxxx0不在手机号码138xxxxxxxx对应的白名单内。该手机号码158xxxxxxx0给手机号码138xxxxxxxx发送了一封信件，该信件的发送时间为“2021/09/02 19:00:00”。158xxxxxxx1不在手机号码138xxxxxxxx对应的白名单内。该手机号码158xxxxxxx1给手机号码138xxxxxxxx发送了一封信件，该信件的发送时间为“2021/09/02 19:05:10”。
可选地，短消息中心41中还可以存储有发送方发给接收方的具体信件的内容。可以理解的是，上述表6A仅为示例，本申请实施例对中短消息中心41存储的不同目标终端发送给终端100的信件的格式不作限定。
可选地，短消息中心41可以不用知晓终端100的白名单信息，即短消息中心41中没有保存终端100对应的白名单，只是缓存了不同终端发送给终端100的短信息。短消息中心41只将一个或多个目标终端发送给终端100的信件数量发送给北斗网络设备，由北斗网络设备200根据保存的白名单确定该一个或多个目标终端是否为白名单内的目标终端。
在一种可能的实现方式中，短消息中心41在收到发送给终端100的信件后，在确定终端100在北斗网络下后，将发送给终端100的信件发送到北斗网络设备200。
可选地，在另一种可能的实现方式中，当北斗网络设备200收到终端100的信件下载查询请求报文时，北斗网络设备200再基于该信件下载查询请求报文，向短消息中心41获取发送给终端100的信件。
进一步地，在一种可能的实现方式中，北斗网络设备200中可以保存发送给终端100的信件。北斗网络设备200可以按照信件的原始发送时间将发送给终端100的信件以队列的形式存储。该存储信件的队列可以遵循先进先出的原则。即若同一个目标终端给终端100发送了多封信件，北斗网络设备200可以将信件原始发送时间在前的信件，先发送给终端100。然后北斗网络设备200再将信件原始发送时间较后的信件，发送给终端100。
示例性地，北斗网络设备200中存储的不同终端发送给终端100的信件的内容的格式可以如下表6B所示。
表6B
Figure PCTCN2022110306-appb-000010
如表6B所示，北斗网络设备200中存储有不同终端发送给终端100的信件。具体地，北斗网络设备200可以以队列的形式存储不同终端100的信件，将不同终端发送给终端100的信件按照信件发送时间的先后顺序排列。北斗网络设备200中还可以存储每个发送信件给终端100的发送方的标识(例如，手机号码)、发送方的标识是否在白名单内、信件发送时间以及信件的内容等等。北斗网络设备200中存储的信件可以遵循先进先出的原则，即，当终端100下载单个目标终端发送的信件时，北斗网络设备200将该单个目标终端发送的多封信件中信件发送时间最早的信件先发送给终端100。以及当终端下载所有目标终端发送的信件时，北斗网络设备200将所有目标终端发送的多封信件中信件发送时间最早的信件先发送给终端100。
在一些场景中，如表6B所示，妈妈的终端(下文可以简称妈妈)发送给终端100的信件 有两封，所有用户的终端发送给终端100的信件有六封。若终端100上一次下载的是妈妈在“2021/09/01 14:30:05”发送的信件，该信件ID为1，那么等终端100再查询妈妈发送给终端100的信件的数量时，北斗网络设备200回复的信件数量为1。若终端100上一次下载的是妈妈在“2021/09/01 14:30:05”发送的信件，该信件ID为1，那么等终端100再查询所有用户的目标终端发送给终端100的信件的数量时，北斗网络设备200回复的信件数量为5。
北斗网络设备200在将妈妈在“2021/09/01 14:30:05”发送的信件成功发送给终端100时，删除该信件(即妈妈在“2021/09/01 14:30:05”发送给终端100的信件)；或者，北斗网络设备200在收到终端100发送的信箱概况查询请求报文，该报文中的消息ID字段指示的信件ID为妈妈在“2021/09/01 14:30:05”发送的信件成功发送给终端100的信件的ID时，删除该信件(即妈妈在“2021/09/01 14:30:05”发送给终端100的信件)。
在一种可能的实现方式中，短消息中心41、和/或北斗网络设备200只保存预设时间内的信件。举例来说，若北斗网络设备200只保存三天内的信件，那么北斗网络设备200在三天后会删除掉信件发送时间为三天前的信件。如表6B所示，若终端100在“2021/09/04 08:00:00”未下载信件发送时间为“2021/09/01 08:00:00”的信件，北斗网络设备200在会“2021/09/04 08:00:00”删除信件发送时间为“2021/09/01 08:00:00”的信件。那么终端100在“2021/09/04 08:00:00”进行信箱概况查询时，北斗网络设备不会统计其他终端在“2021/09/01 08:00:00”及“2021/09/01 08:00:00”发送给终端100的信件的数量。这样，可以及时减少北斗网络设备的缓存量，及时释放北斗网络设备的内存空间。
当北斗网络设备200从短消息中心41中查询到信箱概况查询请求报文中的目标终端发送给终端100的信件的数量之后，北斗网络设备200可以基于该信件的数量，生成信箱概况查询结果报文。
在一种可能的实现方式中，信箱概况查询结果报文的格式可以如下表7所示。
表7
Figure PCTCN2022110306-appb-000011
如上表7所示，信箱概况查询请求报文可以包括消息类型指示字段、加密指示字段、压缩指示字段、应用层鉴权码字段、白名单指示字段、信件数量字段。可以理解的是，本申请实施例中的信箱概况查询结果报文中包含具体字段以及字段的排列顺序不作限定。例如，若北斗网络设备200未对信箱概况查询结果报文进行加密，信箱概况查询结果报文中也可以不包括加密指示字段。
表7中示出的信箱概况查询结果报文中各个字段的具体说明可以如下表8所示。表8示例性地示出表7中各个字段对应的长度以及具体说明。
表8
Figure PCTCN2022110306-appb-000012
Figure PCTCN2022110306-appb-000013
如表8所示，消息类型字段可以用于指示该信箱概况查询结果报文的在信箱业务中的具体类型。该消息类型字段的长度可以是1bit。当消息类型字段取值为0时，可以用于指示该信箱概况查询结果报文的具体业务类型为信箱概况。当消息类型字段取值为1时，可以用于指示该信箱概况查询结果报文的具体业务类型为信件下载。
可选地，消息类型字段的长度还可以是2bit。消息类型指示字段详细定义可以如下表9所示，表9示出了消息类型指示字段的不同数值对应的类型。
表9
消息类型指示 类型
00 信箱概况
01 信件消息
10 RSV
11 RSV
如表9所示，当消息类型指示字段为00时，可以用于指示该信箱概况查询结果报文的具体业务类型为信箱概况。当消息类型字段取值为01时，可以用于指示该信箱概况查询结果报文的具体业务类型为信件下载。消息类型指示字段为10或11时，暂不对应报文的类型，保留后续使用。
可以理解的是，本申请实施例对消息类型指示字段的长度以及消息类型指示字段的具体取值不作限定。
如表8所示，加密指示字段可以用于指示该信箱概况查询请求报文是否加密。示例性地，加密指示字段的长度可以是2bit。当加密指示字段为数值D3(例如，00)时，指示该信箱概况查询请求报文未加密。可以理解的是，本申请实施例对该加密指示字段的长度和加密指示字段的具体取值不作限定。
如表8所示，压缩指示字段可以用于指示该信箱概况查询请求报文是否压缩。示例性地，压缩指示字段的长度可以是2bit。当加密指示字段为数值D4(例如，00)时，指示该信箱概况查询请求报文未压缩。可以理解的是，本申请实施例对该压缩指示字段的长度和压缩指示字段的具体取值不作限定。
如表8所示，应用层鉴权码字段可以用于应用层的鉴权。示例性地，该应用层鉴权码字段的长度可以是16bit。可以理解的是，本申请实施例对该应用层鉴权码字段的长度不作限定。
如表8所示，白名单指示字段可以用于指示终端100解析信件数量字段。白名单指示字段的长度可以是1bit。当白名单指示字段为数值D5(例如，0)时，用于指示终端100按非白名单内的单个目标终端发送的信件数量解析信件数量字段。当白名单指示字段为数值D6(例如，1)时，用于指示终端100指示终端100按白名单内目标终端的发送的信件的数量解析信件数量字段、或者非白名单内所有目标终端发送的信件的数量解析信件数量字段。可以理解的是，本申请实施例对白名单指示字段的长度和白名单字段的具体取值不作限度。
如表8所示，信件数量字段可以用于指示终端100所查询的目标终端发送给终端100的信件数量。其中：
当终端100在信箱概况查询请求报文中查询的是非白名单内的单个目标终端发送给终端100的信件数量时，信箱概况查询结果报文中的白名单指示字段为数值D5，信件数量字段中为非白名单内的单个目标终端发送给终端100的信件数量。此时该信件数量字段的长度可以为4bit。信件数量的具体取值可以如下表10所示。
表10
字段 含义 字段 含义
0000 目标号码有0条信息 0001 目标号码有1条信息
0010 目标号码有2条信息 0011 目标号码有3条信息
  … 1111 目标号码有16条信息
如表10所示，当信件数量字段为0000时，表明该非白名单内的单个目标终端向终端100发送了0条信息。当信件数量字段为0001时，表明该非白名单内的单个目标终端向终端100发送了1条信息。当信件数量字段为0010时，表明该非白名单内的单个目标终端向终端100发送了2条信息。当信件数量字段为0011时，表明该非白名单内的单个目标终端向终端100发送了3条信息。依次地，当信件数量字段为1111时，表明该非白名单内的单个目标终端向终端100发送了16条信息。
可选地，当前的协议中规定该信件数量字段为4bit时，当终端100查询的目标终端发送给终端100的信件的数量超过16条时，终端100发送信箱概况查询时，先回复该目标终端发送给终端的信件的数量为16(即前16条信件的数量)，等终端100再次进行信箱概况查询时，再向终端100回复第16条信件之后的信件的数量。
可以理解的是，随着协议的发展，该信件数量字段的长度可以不限于4bit。
当终端100在信箱概况查询请求报文中查询的是白名单内的目标终端发送给终端100的信件数量时，信箱概况查询结果报文中的白名单指示字段为数值D6，信件数量字段中为白名单内目标终端的发送给终端100的信件的数量。此时，信件数量字段的长度可以是40bit。信件数量的详细定义可以如下表11所示。
表11
Figure PCTCN2022110306-appb-000014
Figure PCTCN2022110306-appb-000015
如表11所示，以用户在白名单中设置10个与终端100关联的目标终端的标识为例。白名单内每个目标终端的标识占4bit，10个目标终端的标识共5个字节(即第00Byte、1Byte、2Byte、3Byte、4Byte)。其中，每个字节有八个bit位(bit0-bit7共八个bit位)。MSB(即bit7)为二进制比特位的最左侧，代表最高位，LSB(bit0)代表二进制比特位的最右侧，代表最低位。白名单中目标终端1的标识占用第0个字节的高4位bit(bit7、bit6、bit5、bit4)。白名单中目标终端2的标识占用第0个字节的低4位bit(bit3、bit2、bit1、bit0)。白名单中目标终端3的标识占用第1个字节的高4位bit(bit7、bit6、bit5、bit4)。白名单中目标终端4的标识占用第1个字节的低4位bit(bit3、bit2、bit1、bit0)。白名单中目标终端6的标识占用第2个字节的高4位bit(bit7、bit6、bit5、bit4)。白名单中目标终端6的标识占用第2个字节的低4位bit(bit3、bit2、bit1、bit0)。白名单中目标终端7的标识占用第3个字节的高4位bit(bit7、bit6、bit5、bit4)。白名单中目标终端8的标识占用第3个字节的低4位bit(bit3、bit2、bit1、bit0)。白名单中目标终端9的标识占用第4个字节的高4位bit(bit7、bit6、bit5、bit4)。白名单中目标终端10的标识占用第4个字节的低4位bit(bit3、bit2、bit1、bit0)。
当终端100在信箱概况查询请求报文中查询的是所有目标终端(非白名单内所有目标终端和白名单内所有目标终端)发送给终端100的信件数量时，信箱概况查询结果报文中的白名单指示字段为数值D6，信件数量字段中为非白名单内所有目标终端和白名单内所有目标终端发送终端100的信件的数量。即该信件数量字段包括40bit的白名单内所有目标终端发送的信件的数量，和Nbit的所有非白名单内目标终端的信件的数量。该Nbit的所有非白名单内目标终端的信件的数量是所有非白名单内目标终端发送的信件的数量的总和，不区分该信件的数量的总和具体又哪些非白名单内的目标终端发送。
可以理解的是，本申请实施例对信件数量字段的长度不作限定。
S707、北斗网络设备200将信箱概况查询结果报文分段成一个或多个SLC PDU2。
具体地，北斗网络设备200可以通过层间接口将信箱概况查询结果报文下发至MDCP层。北斗网络设备200可以在MDCP层将信箱概况查询结果报文分段成一个或多个MDCP PDU。然后，北斗网络设备200再将一个或多个MDCP PDU下发至SLC层。北斗网络设备200可以在SLC层将每一个MDCP PDU分段成一个或多个SLC PDU2。在SLC层，北斗网络设备200可以在每个SLC PDU2的帧头中的用户ID字段中填入终端100的标识(例如，终端100的手机号码)。这里具体可以参考图5中北斗通信系统10中出站数据封装过程的描述，此处不再赘述。
S708、北斗网络设备200向终端100发送一个或多个SLC PDU2。
北斗网络设备200可以将一个或多个SLC PDU2发送给终端100。具体地，北斗网络设备200可以发送完一个SLC PDU2，收到终端100回复的成功接收该SLC PDU2后，再向终端100发送第二个SLC PDU2。可选地，北斗网络设备200也可以依次地将一个或多个SLC PDU2发送给终端100，终端100在接收完全部的SLC PDU2后再向北斗网络设备200回复成功接收 SLC PDU2。或者，终端100也可以不回复。本申请实施例对此不作限定。
S709、终端100接收一个或多个SLC PDU2。
终端100可以接收到一个或多个SLC PDU2。
在一种可能的实现方式中，当终端100收齐一个或多个SLC PDU1后，向北斗网络设备200回复已收齐该一个或多个SLC PDU2。
进一步地，北斗网络设备200可以在SLC层解析出每个SLC PDU2的帧头中的用户ID字段。若终端100从用户ID字段中解析出终端100的标识(例如，手机号码138xxxxxxxx)相同，则终端100将该一个或多个SLC PDU2上传至MDCP层继续解析；若终端100从用户ID字段中未解析出终端100的标识，则终端100可以确定该SLC PDU2不是发送给终端100的，终端100可以丢弃该SLC PDU2。
S710、终端100将一个或多个SLC PDU2拼成信箱概况查询结果报文。
具体地，终端100可以将一个或多个SLC PDU2在SLC层拼成一个或多个SLC SDU。然后，终端100将一个或多个SLC SDU上传至MDCP层作为MDCP层的一个或多个MDCP PDU。然后，终端100可以在MDCP层将一个或多个MDCP PDU拼成MDCP SDU。然后，终端100可以将MDCP SDU上传至APP层作为信箱概况查询结果报文。这里可以参考图6中北斗通信系统的出站数据的解封装过程的描述，此处不再赘述。
S711、终端100解析出信箱概况查询结果报文中目标终端发送给终端100的信件的数量。
终端100可以在APP层解析出信箱概况查询结果报文中的信件数量字段，从信件数量字段中获知目标终端发送给终端100的信件的数量。
S712、终端100显示目标终端发送给终端100的信件的数量。
终端100可以在显示目标终端发送给终端100的信件的数量。终端100也可以以其他形式提示用户目标终端发送给终端100的信件的数量，例如，终端100语音播报目标终端发送给终端100的信件的数量，本申请实施例对此不作限定。
示例性地，终端100在显示屏中显示白名单内目标终端、非白名单内目标终端以及所有目标终端发送给终端100的信件的数量可以如图8A-图8C所示。
如图8A所示，当用户在终端100查询白名单内目标终端，例如爸爸的终端发给终端100的信件的数量时，终端100可以显示用户界面80A。该用户界面80A中可以包括：状态栏803、消息通知框804，其中：
状态栏803中可以包括移动通信信号(又可称为蜂窝信号)的信号强度指示符801、和北斗通信图标802，该移动通信信号(又可称为蜂窝信号)的信号强度指示符801用于指示当前终端100无移动通信信号，该北斗通信图标802用于指示终端100已开启北斗通信功能。
消息通知框804用于显示目标终端发送给终端100的信件的数量，例如“收到来自爸爸的1条信件”。
可选地，消息通知框804中还可以包括控件805，用户点击控件805，可以下载爸爸发送的1条信件。
如图8B所示，当用户在终端100中查询非白名单内目标终端，例如小明的终端发送给终端100的信件的数量时，终端100可以显示用户界面80B。该用户界面80B中可以包括：状态栏803、消息通知框806，其中：
状态栏803可以参考上述图8A中的描述，此处不再赘述。
消息通知框806用于显示目标终端发送给终端100的信件的数量，例如“收到来自小明的 16条信件”。
可选地，消息通知框806中还可以包括控件807，用户点击控件807，可以选择下载小明发送的16条信件中的任一条信件或全部信件。
在一些场景中，小明的终端发送给终端100的信件超过了16条(例如，24条)，但是北斗网络设备最多查询16条信件。当终端100查询小明的终端发送给终端100的信件的数量时，北斗网络设备发送的终端100的查询结果为小明的终端发送给终端100的信件的数量为16条。终端100可以显示收到来自小明的16条信件。
在一种可能的实现方式中，若这16条信件中，用户下载了10条信件，那么下次用户再查询小明的终端发送给终端100的信件的数量时，北斗网络设备200发送的查询结果可以包括上一次查询中未下载的6条信件和未查询的8条信件，即为小明的终端发送给终端100的信件的数量为14条，终端100可以显示收到来自小明的16条信件。
可选地，在另一种可能的实现方式中，若这16条信件中，用户未下载信件，那么下次用户再查询小明的终端发送给终端100的信件的数量时，北斗网络设备发送的终端100的查询结果为小明的终端发送给终端100的信件的数量为16条。终端100可以显示收到来自小明的16条信件。
如图8C所示，当用户在终端100中查询所有目标终端发送给终端100的信件的数量时，终端100可以显示用户界面80C。该用户界面80C中可以包括：状态栏803、消息通知框808，其中：
状态栏803可以参考上述图8A中的描述，此处不再赘述。
消息通知框808用于显示白名单内目标终端发送给终端100的信件的数量，以及所有非白名单内的目标终端发送给终端100的信件的数量。例如，爸爸的终端的标识和妈妈的终端的标识都在终端100的白名单内，当用户查询所有目标终端发送给终端100的信件的数量时，北斗网络设备200查询到爸爸的终端发送给终端100的信件数量为3，妈妈的终端发送给终端100的信件的数量为4，非白名单内的所有目标终端发送给终端100的信件的总数量为16。北斗网络设备200将查询结果发送给终端100，终端100可以显示该查询结果，例如，消息通知框808中可以显示有“收到来自爸爸的3条信件”、“收到来自妈妈的4条信件”、“以及收到来自其他的16条信件”。
可以理解的是，由于白名单中爸爸的终端的标识对应的序号为1、妈妈的终端的标识对应的序号为2，所以终端100将爸爸的终端发送的信件数量显示在消息通知框808的消息队列中的第一个。
可选地，消息通知框808中还可以包括控件809、控件810、或者控件811。控件809用于下载来自爸爸的3条信件中的任一条信件或者全部信件。控件810用于下载来自妈妈的4条信件中的任一条信件或者全部信件。控件811用于下载来自其他的16条信件中的任一条信件或者全部信件。
可以理解的是，当用户上述控件807、控件809、控件810、或者控件811，终端100还可以显示出用于用户选择下载哪一条信件的选项框(图中未示出)。上述图8A、图8B、图8C示出的用户界面可以包含更多或更少的界面内容(例如，应用程序的图标、控件等等)，本申请实施例对此不作限定。本申请实施例对显示信件数量的用户界面的具体形式也不作限定。
这样，通过本申请实施例提供的一种北斗通信系统中的信箱概况查询方法，终端100在 北斗网络下，未驻留到蜂窝网络，也可以查询到其他终端发送给终端100的信件的数量。
下面首先介绍本申请实施例提供的示例性终端100。
图8D是本申请实施例提供的终端100的结构示意图。
下面以终端100为例对实施例进行具体说明。应该理解的是，终端100可以具有比图中所示的更多的或者更少的部件，可以组合两个或多个的部件，或者可以具有不同的部件配置。图中所示出的各种部件可以在包括一个或多个信号处理和/或专用集成电路在内的硬件、软件、或硬件和软件的组合中实现。
终端100可以包括：处理器110，外部存储器接口120，内部存储器121，通用串行总线(universal serial bus，USB)接口130，充电管理模块140，电源管理模块141，电池142，天线1，天线2，移动通信模块150，无线通信模块160，音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，传感器模块180，按键190，马达191，指示器192，摄像头193，显示屏194以及用户标识模块(subscriber identification module，SIM)卡接口195等。其中传感器模块180可以包括压力传感器180A，陀螺仪传感器180B，气压传感器180C，磁传感器180D，加速度传感器180E，距离传感器180F，接近光传感器180G，指纹传感器180H，温度传感器180J，触摸传感器180K，环境光传感器180L，骨传导传感器180M等。
可以理解的是，本发明实施例示意的结构并不构成对终端100的具体限定。在本申请另一些实施例中，终端100可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器110可以包括一个或多个处理单元，例如：处理器110可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，存储器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
其中，控制器可以是终端100的神经中枢和指挥中心。控制器可以根据指令操作码和时序信号，产生操作控制信号，完成取指令和执行指令的控制。
处理器110中还可以设置存储器，用于存储指令和数据。在一些实施例中，处理器110中的存储器为高速缓冲存储器。该存储器可以保存处理器110刚用过或循环使用的指令或数据。如果处理器110需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器110的等待时间，因而提高了系统的效率。
在一些实施例中，处理器110可以包括一个或多个接口。接口可以包括集成电路(inter-integrated circuit，I2C)接口，集成电路内置音频(inter-integrated circuit sound，I2S)接口，脉冲编码调制(pulse code modulation，PCM)接口，通用异步收发传输器(universal asynchronous receiver/transmitter，UART)接口，移动产业处理器接口(mobile industry processor interface，MIPI)，通用输入输出(general-purpose input/output，GPIO)接口，用户标识模块(subscriber identity module，SIM)接口，和/或通用串行总线(universal serial bus，USB)接口等。
I2C接口是一种双向同步串行总线，包括一根串行数据线(serial data line，SDA)和一根串行时钟线(derail clock line，SCL)。在一些实施例中，处理器110可以包含多组I2C总线。处理器110可以通过不同的I2C总线接口分别耦合触摸传感器180K，充电器，闪光灯，摄像 头193等。例如：处理器110可以通过I2C接口耦合触摸传感器180K，使处理器110与触摸传感器180K通过I2C总线接口通信，实现终端100的触摸功能。
I2S接口可以用于音频通信。在一些实施例中，处理器110可以包含多组I2S总线。处理器110可以通过I2S总线与音频模块170耦合，实现处理器110与音频模块170之间的通信。在一些实施例中，音频模块170可以通过I2S接口向无线通信模块160传递音频信号，实现通过蓝牙耳机接听电话的功能。
PCM接口也可以用于音频通信，将模拟信号抽样，量化和编码。在一些实施例中，音频模块170与无线通信模块160可以通过PCM总线接口耦合。在一些实施例中，音频模块170也可以通过PCM接口向无线通信模块160传递音频信号，实现通过蓝牙耳机接听电话的功能。所述I2S接口和所述PCM接口都可以用于音频通信。
UART接口是一种通用串行数据总线，用于异步通信。该总线可以为双向通信总线。它将要传输的数据在串行通信与并行通信之间转换。在一些实施例中，UART接口通常被用于连接处理器110与无线通信模块160。例如：处理器110通过UART接口与无线通信模块160中的蓝牙模块通信，实现蓝牙功能。在一些实施例中，音频模块170可以通过UART接口向无线通信模块160传递音频信号，实现通过蓝牙耳机播放音乐的功能。
MIPI接口可以被用于连接处理器110与显示屏194，摄像头193等外围器件。MIPI接口包括摄像头串行接口(camera serial interface，CSI)，显示屏串行接口(display serial interface，DSI)等。在一些实施例中，处理器110和摄像头193通过CSI接口通信，实现终端100的拍摄功能。处理器110和显示屏194通过DSI接口通信，实现终端100的显示功能。
GPIO接口可以通过软件配置。GPIO接口可以被配置为控制信号，也可被配置为数据信号。在一些实施例中，GPIO接口可以用于连接处理器110与摄像头193，显示屏194，无线通信模块160，音频模块170，传感器模块180等。GPIO接口还可以被配置为I2C接口，I2S接口，UART接口，MIPI接口等。
SIM接口可以被用于与SIM卡接口195通信，实现传送数据到SIM卡或读取SIM卡中数据的功能。
USB接口130是符合USB标准规范的接口，具体可以是Mini USB接口，Micro USB接口，USB Type C接口等。USB接口130可以用于连接充电器为终端100充电，也可以用于终端100与外围设备之间传输数据。也可以用于连接耳机，通过耳机播放音频。该接口还可以用于连接其他电子设备，例如AR设备等。
可以理解的是，本发明实施例示意的各模块间的接口连接关系，只是示意性说明，并不构成对终端100的结构限定。在本申请另一些实施例中，终端100也可以采用上述实施例中不同的接口连接方式，或多种接口连接方式的组合。
充电管理模块140用于从充电器接收充电输入。其中，充电器可以是无线充电器，也可以是有线充电器。
电源管理模块141用于连接电池142，充电管理模块140与处理器110。电源管理模块141接收电池142和/或充电管理模块140的输入，为处理器110，内部存储器121，外部存储器，显示屏194，摄像头193，和无线通信模块160等供电。
终端100的无线通信功能可以通过天线1，天线2，移动通信模块150，无线通信模块160，调制解调处理器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。终端100中的每个天线可用于覆盖单个或 多个通信频带。不同的天线还可以复用，以提高天线的利用率。例如：可以将天线1复用为无线局域网的分集天线。在另外一些实施例中，天线可以和调谐开关结合使用。
移动通信模块150可以提供应用在终端100上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块150可以包括至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。移动通信模块150可以由天线1接收电磁波，并对接收的电磁波进行滤波，放大等处理，传送至调制解调处理器进行解调。移动通信模块150还可以对经调制解调处理器调制后的信号放大，经天线1转为电磁波辐射出去。在一些实施例中，移动通信模块150的至少部分功能模块可以被设置于处理器110中。在一些实施例中，移动通信模块150的至少部分功能模块可以与处理器110的至少部分模块被设置在同一个器件中。
调制解调处理器可以包括调制器和解调器。其中，调制器用于将待发送的低频基带信号调制成中高频信号。解调器用于将接收的电磁波信号解调为低频基带信号。随后解调器将解调得到的低频基带信号传送至基带处理器处理。低频基带信号经基带处理器处理后，被传递给应用处理器。应用处理器通过音频设备(不限于扬声器170A，受话器170B等)输出声音信号，或通过显示屏194显示图像或视频。在一些实施例中，调制解调处理器可以是独立的器件。在另一些实施例中，调制解调处理器可以独立于处理器110，与移动通信模块150或其他功能模块设置在同一个器件中。
无线通信模块160可以提供应用在终端100上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，北斗通信模块，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的解决方案。无线通信模块160可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块160经由天线2接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器110。无线通信模块160还可以从处理器110接收待发送的信号，对其进行调频，放大，经天线2转为电磁波辐射出去。
其中，北斗通信模块可用于与北斗网络设备200进行通信。北斗通信模块可支持与北斗网络设备200进行短报文传输。
在一些实施例中，终端100的天线1和移动通信模块150耦合，天线2和无线通信模块160耦合，使得终端100可以通过无线通信技术与网络以及其他设备通信。所述无线通信技术可以包括全球移动通讯系统(global system for mobile communications，GSM)，通用分组无线服务(general packet radio service，GPRS)，码分多址接入(code division multiple access，CDMA)，宽带码分多址(wideband code division multiple access，WCDMA)，时分码分多址(time-division code division multiple access，TD-SCDMA)，长期演进(long term evolution，LTE)，BT，GNSS，WLAN，NFC，FM，和/或IR技术等。所述GNSS可以包括全球卫星定位系统(global positioning system，GPS)，全球导航卫星系统(global navigation satellite system，GLONASS)，北斗卫星导航系统(beidou navigation satellite system，BDS)，准天顶卫星系统(quasi-zenith satellite system，QZSS)和/或星基增强系统(satellite based augmentation systems，SBAS)。
终端100通过GPU，显示屏194，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏194和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器110可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏194用于显示图像，视频等。显示屏194包括显示面板。显示面板可以采用液晶显示屏(liquid crystal display，LCD)，有机发光二极管(organic light-emitting diode，OLED)，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light emitting diode，AMOLED)，柔性发光二极管(flex light-emitting diode，FLED)，Miniled，MicroLed，Micro-oLed，量子点发光二极管(quantum dot light emitting diodes，QLED)等。在一些实施例中，终端100可以包括1个或N个显示屏194，N为大于1的正整数。
终端100可以通过ISP，摄像头193，视频编解码器，GPU，显示屏194以及应用处理器等实现拍摄功能。
ISP用于处理摄像头193反馈的数据。例如，拍照时，打开快门，光线通过镜头被传递到摄像头感光元件上，光信号转换为电信号，摄像头感光元件将所述电信号传递给ISP处理，转化为肉眼可见的图像。ISP还可以对图像的噪点，亮度，颜色进行算法优化。ISP还可以对拍摄场景的曝光，色温等参数优化。在一些实施例中，ISP可以设置在摄像头193中。
摄像头193用于捕获静态图像或视频。物体通过镜头生成光学图像投射到感光元件。感光元件可以是电荷耦合器件(charge coupled device，CCD)或互补金属氧化物半导体(complementary metal-oxide-semiconductor，CMOS)光电晶体管。感光元件把光信号转换成电信号，之后将电信号传递给ISP转换成数字图像信号。ISP将数字图像信号输出到DSP加工处理。DSP将数字图像信号转换成标准的RGB，YUV等格式的图像信号。在一些实施例中，终端100可以包括1个或N个摄像头193，N为大于1的正整数。
数字信号处理器用于处理数字信号，除了可以处理数字图像信号，还可以处理其他数字信号。例如，当终端100在频点选择时，数字信号处理器用于对频点能量进行傅里叶变换等。
视频编解码器用于对数字视频压缩或解压缩。终端100可以支持一种或多种视频编解码器。这样，终端100可以播放或录制多种编码格式的视频，例如：动态图像专家组(moving picture experts group，MPEG)1，MPEG2，MPEG3，MPEG4等。
NPU为神经网络(neural-network，NN)计算处理器，通过借鉴生物神经网络结构，例如借鉴人脑神经元之间传递模式，对输入信息快速处理，还可以不断的自学习。通过NPU可以实现终端100的智能认知等应用，例如：图像识别，人脸识别，语音识别，文本理解等。
内部存储器121可以包括一个或多个随机存取存储器(random access memory，RAM)和一个或多个非易失性存储器(non-volatile memory，NVM)。
随机存取存储器可以包括静态随机存储器(static random-access memory，SRAM)、动态随机存储器(dynamic random access memory，DRAM)、同步动态随机存储器(synchronous dynamic random access memory，SDRAM)、双倍资料率同步动态随机存取存储器(double data rate synchronous dynamic random access memory，DDR SDRAM，例如第五代DDR SDRAM一般称为DDR5SDRAM)等；
非易失性存储器可以包括磁盘存储器件、快闪存储器(flash memory)。
快闪存储器按照运作原理划分可以包括NOR FLASH、NAND FLASH、3D NAND FLASH等，按照存储单元电位阶数划分可以包括单阶存储单元(single-level cell，SLC)、多阶存储单元(multi-level cell，MLC)、三阶储存单元(triple-level cell，TLC)、四阶储存单元(quad-level cell，QLC)等，按照存储规范划分可以包括通用闪存存储(英文：universal flash storage，UFS)、嵌入式多媒体存储卡(embedded multi media Card，eMMC)等。
随机存取存储器可以由处理器110直接进行读写，可以用于存储操作系统或其他正在运 行中的程序的可执行程序(例如机器指令)，还可以用于存储用户及应用程序的数据等。
非易失性存储器也可以存储可执行程序和存储用户及应用程序的数据等，可以提前加载到随机存取存储器中，用于处理器110直接进行读写。
终端100可以通过音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
音频模块170用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块170还可以用于对音频信号编码和解码。在一些实施例中，音频模块170可以设置于处理器110中，或将音频模块170的部分功能模块设置于处理器110中。
扬声器170A，也称“喇叭”，用于将音频电信号转换为声音信号。终端100可以通过扬声器170A收听音乐，或收听免提通话。
受话器170B，也称“听筒”，用于将音频电信号转换成声音信号。当终端100接听电话或语音信息时，可以通过将受话器170B靠近人耳接听语音。
麦克风170C，也称“话筒”，“传声器”，用于将声音信号转换为电信号。当拨打电话或发送语音信息时，用户可以通过人嘴靠近麦克风170C发声，将声音信号输入到麦克风170C。终端100可以设置至少一个麦克风170C。在另一些实施例中，终端100可以设置两个麦克风170C，除了采集声音信号，还可以实现降噪功能。在另一些实施例中，终端100还可以设置三个，四个或更多麦克风170C，实现采集声音信号，降噪，还可以识别声音来源，实现定向录音功能等。
耳机接口170D用于连接有线耳机。耳机接口170D可以是USB接口130，也可以是3.5mm的开放移动电子设备平台(open mobile terminal platform，OMTP)标准接口，美国蜂窝电信工业协会(cellular telecommunications industry association of the USA，CTIA)标准接口。
压力传感器180A用于感受压力信号，可以将压力信号转换成电信号。在一些实施例中，压力传感器180A可以设置于显示屏194。压力传感器180A的种类很多，如电阻式压力传感器，电感式压力传感器，电容式压力传感器等。电容式压力传感器可以是包括至少两个具有导电材料的平行板。当有力作用于压力传感器180A，电极之间的电容改变。终端100根据电容的变化确定压力的强度。当有触摸操作作用于显示屏194，终端100根据压力传感器180A检测所述触摸操作强度。终端100也可以根据压力传感器180A的检测信号计算触摸的位置。在一些实施例中，作用于相同触摸位置，但不同触摸操作强度的触摸操作，可以对应不同的操作指令。例如：当有触摸操作强度小于第一压力阈值的触摸操作作用于短消息应用图标时，执行查看短消息的指令。当有触摸操作强度大于或等于第一压力阈值的触摸操作作用于短消息应用图标时，执行新建短消息的指令。
陀螺仪传感器180B可以用于确定终端100的运动姿态。在一些实施例中，可以通过陀螺仪传感器180B确定终端100围绕三个轴(即，x，y和z轴)的角速度。陀螺仪传感器180B可以用于拍摄防抖。示例性的，当按下快门，陀螺仪传感器180B检测终端100抖动的角度，根据角度计算出镜头模组需要补偿的距离，让镜头通过反向运动抵消终端100的抖动，实现防抖。陀螺仪传感器180B还可以用于导航，体感游戏场景。
气压传感器180C用于测量气压。在一些实施例中，终端100通过气压传感器180C测得的气压值计算海拔高度，辅助定位和导航。
磁传感器180D包括霍尔传感器。终端100可以利用磁传感器180D检测翻盖皮套的开合。 在一些实施例中，当终端100是翻盖机时，终端100可以根据磁传感器180D检测翻盖的开合。进而根据检测到的皮套的开合状态或翻盖的开合状态，设置翻盖自动解锁等特性。
加速度传感器180E可检测终端100在各个方向上(一般为三轴)加速度的大小。当终端100静止时可检测出重力的大小及方向。还可以用于识别电子设备姿态，应用于横竖屏切换，计步器等应用。
距离传感器180F，用于测量距离。终端100可以通过红外或激光测量距离。在一些实施例中，拍摄场景，终端100可以利用距离传感器180F测距以实现快速对焦。
接近光传感器180G可以包括例如发光二极管(LED)和光检测器，例如光电二极管。发光二极管可以是红外发光二极管。终端100通过发光二极管向外发射红外光。终端100使用光电二极管检测来自附近物体的红外反射光。当检测到充分的反射光时，可以确定终端100附近有物体。当检测到不充分的反射光时，终端100可以确定终端100附近没有物体。终端100可以利用接近光传感器180G检测用户手持终端100贴近耳朵通话，以便自动熄灭屏幕达到省电的目的。接近光传感器180G也可用于皮套模式，口袋模式自动解锁与锁屏。
环境光传感器180L用于感知环境光亮度。终端100可以根据感知的环境光亮度自适应调节显示屏194亮度。环境光传感器180L也可用于拍照时自动调节白平衡。环境光传感器180L还可以与接近光传感器180G配合，检测终端100是否在口袋里，以防误触。
指纹传感器180H用于采集指纹。终端100可以利用采集的指纹特性实现指纹解锁，访问应用锁，指纹拍照，指纹接听来电等。
温度传感器180J用于检测温度。在一些实施例中，终端100利用温度传感器180J检测的温度，执行温度处理策略。例如，当温度传感器180J上报的温度超过阈值，终端100执行降低位于温度传感器180J附近的处理器的性能，以便降低功耗实施热保护。在另一些实施例中，当温度低于另一阈值时，终端100对电池142加热，以避免低温导致终端100异常关机。在其他一些实施例中，当温度低于又一阈值时，终端100对电池142的输出电压执行升压，以避免低温导致的异常关机。
触摸传感器180K，也称“触控面板”。触摸传感器180K可以设置于显示屏194，由触摸传感器180K与显示屏194组成触摸屏，也称“触控屏”。触摸传感器180K用于检测作用于其上或附近的触摸操作。触摸传感器可以将检测到的触摸操作传递给应用处理器，以确定触摸事件类型。可以通过显示屏194提供与触摸操作相关的视觉输出。在另一些实施例中，触摸传感器180K也可以设置于终端100的表面，与显示屏194所处的位置不同。
按键190包括开机键，音量键等。按键190可以是机械按键。也可以是触摸式按键。终端100可以接收按键输入，产生与终端100的用户设置以及功能控制有关的键信号输入。
马达191可以产生振动提示。马达191可以用于来电振动提示，也可以用于触摸振动反馈。例如，作用于不同应用(例如拍照，音频播放等)的触摸操作，可以对应不同的振动反馈效果。作用于显示屏194不同区域的触摸操作，马达191也可对应不同的振动反馈效果。不同的应用场景(例如：时间提醒，接收信息，闹钟，游戏等)也可以对应不同的振动反馈效果。触摸振动反馈效果还可以支持自定义。
指示器192可以是指示灯，可以用于指示充电状态，电量变化，也可以用于指示消息，未接来电，通知等。
SIM卡接口195用于连接SIM卡。SIM卡可以通过插入SIM卡接口195，或从SIM卡接口195拔出，实现和终端100的接触和分离。终端100可以支持1个或N个SIM卡接口，N 为大于1的正整数。SIM卡接口195可以支持Nano SIM卡，Micro SIM卡，SIM卡等。同一个SIM卡接口195可以同时插入多张卡。所述多张卡的类型可以相同，也可以不同。SIM卡接口195也可以兼容不同类型的SIM卡。SIM卡接口195也可以兼容外部存储卡。终端100通过SIM卡和网络交互，实现通话以及数据通信等功能。
上述内容详细阐述了本申请提供的方法，为了便于更好地实施本申请实施例的上述方案，本申请实施例还提供了相应的装置或设备。
本申请实施例可以根据上述方法示例对终端100和北斗网络设备200进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
下面将结合图9至图12详细描述本申请实施例的通信装置。
在采用集成的单元的情况下，参见图9，图9是本申请实施例提供的通信装置900的结构示意图。该通信装置900可以为上述实施例中的终端100。可选的，通信装置900可以为一种芯片/芯片系统，例如，北斗通信芯片。如图9所示，该通信装置900可以包括收发单元910和处理单元920。
一种设计中，收发单元910，可用于向北斗网络设备200发送信箱概况查询请求报文；
可选地，收发单元910，还可以用于接收信箱概况查询结果报文。
处理单元920，可用于将信箱概况查询请求报文下发至MDCP层，可以在MDCP层将信箱概况查询请求报文分段成一个或多个MDCP PDU。
可选地，处理单元920，还可用于将一个或多个MDCP PDU下发至SLC层，可以在SLC层将每一个MDCP PDU分段成一个或多个SLC PDU1。
可选的，收发单元910，还可用于执行上述图7所示方法实施例中终端100执行的有关发送和接收的功能步骤。
可选的，处理单元920，还可用于执行上述图7所示方法实施例中终端100执行的有关协议解析与封装以及运算确定的功能步骤。
应理解，该种设计中的通信装置900可对应执行前述实施例中终端100执行的方法步骤，为了简洁，在此不再赘述。
在采用集成的单元的情况下，参见图10，图10是本申请实施例提供的通信装置1000的结构示意图。该通信装置1000可以为上述实施例中的北斗网络设备200。可选的，通信装置1000可以为北斗网络设备200中的具体网元，例如，北斗地面接收站31、北斗地面发射站35、信号接收处理设备32、信号处理中心33、信号发送处理设备36、运行控制中心37和北斗短报文融合通信平台34中的一个网元或多个网元的组合。如图10所示，该通信装置1000可以包括收发单元1010和处理单元1020。
一种设计中，收发单元1010，可用于接收信箱概况查询请求报文。
收发单元1010，还可用于发送信箱概况查询结果报文。
处理单元1020，可以用于将一个或多个SLC PDU1拼成信箱概况查询请求报文。
处理单元1020，还可以用于将一个或多个SLC PDU1在SLC层拼成一个或多个SLC SDU，将一个或多个SLC SDU上传至MDCP层作为MDCP层的一个或多个MDCP PDU；在MDCP层将一个或多个MDCP PDU拼成MDCP SDU；然后，可以用于将MDCP SDU上传至APP层作为信箱概况查询请求报文。
可选的，收发单元1010，还可用于执行上述图7所示方法实施例中北斗网络设备200执行的有关发送和接收的功能步骤。
可选的，处理单元1020，还可用于执行上述图7所示方法实施例中北斗网络设备200执行的有关协议解析与封装以及运算确定的功能步骤。
应理解，该种设计中的通信装置1000可对应执行前述实施例中北斗网络设备200执行的方法步骤，为了简洁，在此不再赘述。
以上介绍了本申请实施例的终端100和北斗网络设备200，应理解，但凡具备上述图9所述的终端100的功能的任何形态的产品，但凡具备上述图10所述的北斗网络设备200的功能的任何形态的产品，都落入本申请实施例的保护范围。
作为一种可能的产品形态，本申请实施例所述的终端100，可以由一般性的总线体系结构来实现。
参见图11，图11是本申请实施例提供的通信装置1100的结构示意图。该通信装置1100可以是终端100，或其中的装置。如图11所示，该通信装置1100包括处理器1101和与所述处理器内部连接通信的收发器1102。其中，处理器1101是通用处理器或者专用处理器等。例如可以是卫星通信的基带处理器或中央处理器。卫星通信的基带处理器可以用于对卫星通信协议以及卫星通信数据进行处理，中央处理器可以用于对通信装置(如，基带芯片，终端、终端芯片等)进行控制，执行计算机程序，处理计算机程序的数据。收发器1102可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1102可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。可选的，通信装置1100还可以包括天线1103和/或射频单元(图未示意)。所述天线1103和/或射频单元可以位于所述通信装置1100内部，也可以与所述通信装置1100分离，即所述天线1103和/或射频单元可以是拉远或分布式部署的。
可选的，通信装置1100中可以包括一个或多个存储器1104，其上可以存有指令，该指令可为计算机程序，所述计算机程序可在通信装置1100上被运行，使得通信装置1100执行上述方法实施例中描述的方法。可选的，所述存储器1104中还可以存储有数据。通信装置1100和存储器1104可以单独设置，也可以集成在一起。
其中，处理器1101、收发器1102、以及存储器1104可以通过通信总线连接。
一种设计中，通信装置1100可以用于执行前述实施例中终端100的功能：处理器1101可以用于执行上述图3和图5以及图7所示实施例中终端100执行的有关协议解析与封装以及运算确定的功能步骤和/或用于本文所描述的技术的其它过程；收发器1102可以用于执行上述图3和图5以及图7所示实施例中终端100执行的有关协议解析与封装以及运算确定的功能步骤和/或用于本文所描述的技术的其它过程。
在上述任一种设计中，处理器1101中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发 电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在上述任一种设计中，处理器1101可以存有指令，该指令可为计算机程序，计算机程序在处理器1101上运行，可使得通信装置1100执行上述方法实施例中终端100执行的方法步骤。计算机程序可能固化在处理器1101中，该种情况下，处理器1101可能由硬件实现。
在一种实现方式中，通信装置1100可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图11的限制。通信装置1100可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置1100可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
作为一种可能的产品形态，本申请实施例所述的北斗网络设备200中的任一网元(例如、北斗地面接收站31、北斗地面发射站35、信号接收处理设备32、信号处理中心33、信号发送处理设备36、运行控制中心37和北斗短报文融合通信平台34)，可以由一般性的总线体系结构来实现。
参见图12，图12是本申请实施例提供的通信装置1200的结构示意图。该通信装置1200可以是北斗网络设备200，或其中的装置。如图12所示，该通信装置1200包括处理器1201和与所述处理器内部连接通信的收发器1202。其中，处理器1201是通用处理器或者专用处理器等。例如可以是卫星通信的基带处理器或中央处理器。卫星通信的基带处理器可以用于对卫星通信协议以及卫星通信数据进行处理，中央处理器可以用于对通信装置(如，基带芯片等)进行控制，执行计算机程序，处理计算机程序的数据。收发器1202可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1202可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。可选的，通信装置1200还可以包括天线1203和/或射频单元(图未示意)。 所述天线1203和/或射频单元可以位于所述通信装置1200内部，也可以与所述通信装置1200分离，即所述天线1203和/或射频单元可以是拉远或分布式部署的。
可选的，通信装置1200中可以包括一个或多个存储器1204，其上可以存有指令，该指令可为计算机程序，所述计算机程序可在通信装置1200上被运行，使得通信装置1200执行上述方法实施例中描述的方法。可选的，所述存储器1204中还可以存储有数据。通信装置1200和存储器1204可以单独设置，也可以集成在一起。
其中，处理器1201、收发器1202、以及存储器1204可以通过通信总线连接。
一种设计中，通信装置1200可以用于执行前述实施例中北斗网络设备200的功能：处理器1201可以用于执行上述图7所示实施例中北斗网络设备200执行的有关协议解析与封装以及运算确定的功能步骤和/或用于本文所描述的技术的其它过程；收发器1202可以用于执行上述图4、图6和图7所示实施例中北斗网络设备200执行的有关协议解析与封装以及运算确定的功能步骤和/或用于本文所描述的技术的其它过程。
在上述任一种设计中，处理器1201中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在上述任一种设计中，处理器1201可以存有指令，该指令可为计算机程序，计算机程序在处理器1201上运行，可使得通信装置1200执行上述方法实施例中终端100执行的方法步骤。计算机程序可能固化在处理器1201中，该种情况下，处理器1201可能由硬件实现。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序代码，当上述处理器执行该计算机程序代码时，使得通信装置执行前述任一实施例中的方法。
本申请实施例还提供一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行前述任一实施例中的方法。
本申请实施例还提供一种通信装置，该装置可以以芯片的产品形态存在，该装置的结构中包括处理器和接口电路，该处理器用于通过接收电路与其它装置通信，使得该装置执行前述任一实施例中的方法。
本申请实施例还提供一种北斗通信系统，包括终端100和北斗网络设备200，该终端100和北斗网络设备200可以执行前述任一实施例中的方法。
本申请全文介绍了北斗通信系统中短报文的通信功能，可以理解的是，其他卫星系统中也可能存在支持短报文的通信功能。因此，不限制在北斗通信系统中，若有其他卫星系统也支持短报文的通信功能，本申请中介绍的方法，也同样适用于其他卫星系统的通信。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。
上述实施例中所用，根据上下文，术语“当…时”可以被解释为意思是“如果…”或“在… 后”或“响应于确定…”或“响应于检测到…”。类似地，根据上下文，短语“在确定…时”或“如果检测到(所陈述的条件或事件)”可以被解释为意思是“如果确定…”或“响应于确定…”或“在检测到(所陈述的条件或事件)时”或“响应于检测到(所陈述的条件或事件)”。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如DVD)、或者半导体介质(例如固态硬盘)等。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，该流程可以由计算机程序来指令相关的硬件完成，该程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。而前述的存储介质包括：ROM或随机存储记忆体RAM、磁碟或者光盘等各种可存储程序代码的介质。

Claims (27)

  1. 一种北斗通信系统中的信箱概况查询方法，其特征在于，包括：
    第一终端向北斗网络设备发送信箱概况查询请求报文，所述信箱概况查询请求报文用于查询一个或多个第二终端发送给所述第一终端的信件的数量，所述信箱概况查询请求报文中包括消息ID字段，所述消息ID字段用于指示所述第一终端上一次接收成功的第一信件的ID，所述第一信件的ID用于指示所述北斗网络设备删除所述第一信件；
    所述第一终端接收所述北斗网络设备发送的信箱概况查询结果报文；所述信箱概况查询结果报文中包括信件数量字段；所述信件数量字段用于指示所述一个或多个第二终端发送给所述第一终端的信件的数量，所述一个或多个第二终端发送给所述第一终端的信件的数量中不包括所述第一信件的数量。
  2. 根据权利要求1所述的方法，其特征在于，所述信箱概况查询请求报文还包括业务类型字段，在所述业务类型字段为第一值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询白名单内的第二终端发送给所述第一终端的信件的数量；
    在所述业务类型字段为第二值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询非白名单内的第二终端发送给所述第一终端的信件的数量；
    在所述业务类型字段为第三值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询所有第二终端发送给所述第一终端的信件的数量；
    其中，所述第一终端中设置有所述白名单，所述白名单中用于存储与所述第一终端关联的第二终端的标识、以及与所述第一终端关联的第二终端的序号。
  3. 根据权利要求2所述的方法，其特征在于，
    在所述业务类型字段为所述第一值的情况下，所述信箱概况查询请求报文还包括发送方ID字段，所述发送方ID字段为白名单比特位图，所述白名单比特位图的第一比特位用于指示白名单内第一序号的第二终端的标识；
    在所述业务类型字段为所述第二值的情况下，所述信箱概况查询请求报文还包括发送方ID字段，所述发送方ID字段用于指示非白名单内的第二终端的手机号码。
  4. 根据权利要求3所述的方法，其特征在于，所述信箱概况查询结果报文中还包括白名单指示字段，在所述白名单指示字段为第四值的情况下，所述白名单指示字段用于指示所述信件数量字段中为非白名单内的一个第二终端发送给所述第一终端的信件的数量；
    在所述白名单指示字段为第五值的情况下，所述白名单指示字段用于指示所述信件数量字段中为白名单内的第二终端发送给所述第一终端的信件的数量、或所有第二终端发送给所述第一终端的信件的数量。
  5. 根据权利要求4所述的方法，其特征在于，所述信箱概况查询结果报文还包括消息类型指示字段，在所述消息类型指示字段为第六值的情况下，所述消息类型指示字段用于指示所述信箱概况查询结果报文用于查询所述一个或多个第二终端发送给所述第一终端的信件的数量；
    在所述消息类型指示字段为第七值的情况下，所述消息类型指示字段用于指示所述信箱 概况查询结果报文用于下载所述一个或多个第二终端发送给所述第一终端的信件的内容。
  6. 根据权利要求5所述的方法，其特征在于，在所述信箱概况查询请求报文中的所述业务类型为所述第二值的情况下，所述信箱概况查询结果报文中的所述白名单指示字段为所述第四值，所述信箱概况查询结果报文中的所述消息类型指示字段为所述第六值；
    在所述信箱概况查询请求报文中的所述业务类型为所述第一值或所述第三值的情况下，所述信箱概况查询结果报文中的所述白名单指示字段为所述第五值，所述信箱概况查询结果报文中的所述消息类型指示字段为所述第六值。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述第一终端向北斗网络设备发送信箱概况查询请求报文之前，所述方法还包括：
    所述第一终端检测到第一操作，基于所述第一操作生成信箱概况查询请求报文。
  8. 根据权利要求7所述的方法，其特征在于，所述第一终端向北斗网络设备发送信箱概况查询请求报文，具体包括：
    所述第一终端在应用APP层将所述信箱概况查询请求报文下发至所述第一终端的消息数据汇聚MDCP层，作为所述MDCP层的MDCP服务数据单元SDU；
    所述第一终端将所述MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；所述一个或多个MDCP PDU中包括第一MDCP PDU；
    所述第一终端将所述第一MDCP PDU下发至卫星链路控制SLC层，作为所述SLC层的SLC SDU；
    所述第一终端将所述SLC SDU拆分成一个或多个SLC PDU；
    所述第一终端将所述一个或多个SLC PDU发送给所述北斗网络设备。
  9. 根据权利要求8所述的方法，其特征在于，所述第一终端接收所述北斗网络设备发送的信箱概况查询结果报文，具体包括：
    所述第一终端接收所述北斗网络设备发送的P个SLC PDU；所述P为正整数；
    所述第一终端在SLC层将所述P个SLC PDU拼成Q个SLC SDU；所述Q为正整数，所述Q小于或等于所述P；
    所述第一终端将所述Q个SLC SDU上传至所述MDCP层，作为所述MDCP层的Q个MDCP PDU；
    所述第一终端在所述MDCP层将所述Q个MDCP PDU拼成MDCP SDU；
    所述第一终端在所述MDCP层将所述MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询结果报文。
  10. 根据权利要求9所述的方法，其特征在于，所述第一终端接收所述北斗网络设备发送的信箱概况查询结果报文之后，所述方法还包括：
    所述第一终端解析出所述信箱概况查询结果报文中信件数量字段中一个或多个第二终端发送的所述第一终端的信件的数量；
    所述第一终端在显示屏中显示所述一个或多个第二终端发送的所述第一终端的信件的数 量。
  11. 一种北斗通信系统中的信箱概况查询方法，其特征在于，包括：
    北斗网络设备接收到第一终端发送的信箱概况查询请求报文，所述信箱概况查询请求报文用于查询一个或多个第二终端发送给所述第一终端的信件的数量，所述信箱概况查询请求报文中包括消息ID字段，所述消息ID字段用于指示所述第一终端上一次接收成功的第一信件的ID，所述第一信件的ID用于指示所述北斗网络设备删除所述第一信件；
    基于所述信箱概况查询请求报文，所述北斗网络设备生成信箱概况查询结果报文，所述信箱概况查询结果报文中包括信件数量字段；所述信件数量字段用于指示所述一个或多个第二终端发送给所述第一终端的信件的数量，所述一个或多个第二终端发送给所述第一终端的信件的数量中不包括所述第一信件的数量；
    所述北斗网络设备向所述第一终端发送信箱概况查询结果报文。
  12. 根据权利要求11所述的方法，其特征在于，所述信箱概况查询请求报文还包括业务类型字段，在所述业务类型字段为第一值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询白名单内的第二终端发送给所述第一终端的信件的数量；
    在所述业务类型字段为第二值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询非白名单内的第二终端发送给所述第一终端的信件的数量；
    在所述业务类型字段为第三值的情况下，所述业务类型字段用于指示所述信箱概况查询请求报文用于查询所有第二终端发送给所述第一终端的信件的数量；
    其中，所述第一终端中设置有所述白名单，所述白名单中用于存储与所述第一终端关联的第二终端的标识、以及与所述第一终端关联的第二终端的序号。
  13. 根据权利要求12所述的方法，其特征在于，
    在所述业务类型字段为所述第一值的情况下，所述信箱概况查询请求报文还包括发送方ID字段，所述发送方ID字段为白名单比特位图，所述白名单比特位图的第一比特位用于指示白名单内第一序号的第二终端的标识；
    在所述业务类型字段为所述第二值的情况下，所述信箱概况查询请求报文还包括发送方ID字段，所述发送方ID字段用于指示非白名单内的第二终端的手机号码。
  14. 根据权利要求13所述的方法，其特征在于，所述信箱概况查询结果报文中还包括白名单指示字段，在所述白名单指示字段为第四值的情况下，所述白名单指示字段用于指示所述信件数量字段中为非白名单内的一个第二终端发送给所述第一终端的信件的数量；
    在所述白名单指示字段为第五值的情况下，所述白名单指示字段用于指示所述信件数量字段中为白名单内的第二终端发送给所述第一终端的信件的数量、或所有第二终端发送给所述第一终端的信件的数量。
  15. 根据权利要求14所述的方法，其特征在于，所述信箱概况查询结果报文还包括消息类型指示字段，在所述消息类型指示字段为第六值的情况下，所述消息类型指示字段用于指示所述信箱概况查询结果报文用于查询所述一个或多个第二终端发送给所述第一终端的信件 的数量；
    在所述消息类型指示字段为第七值的情况下，所述消息类型指示字段用于指示所述信箱概况查询结果报文用于下载所述一个或多个第二终端发送给所述第一终端的信件的内容。
  16. 根据权利要求15所述的方法，其特征在于，在所述信箱概况查询请求报文中的所述业务类型为所述第二值的情况下，所述信箱概况查询结果报文中的所述白名单指示字段为所述第四值，所述信箱概况查询结果报文中的所述消息类型指示字段为所述第六值；
    在所述信箱概况查询请求报文中的所述业务类型为所述第一值或所述第三值的情况下，所述信箱概况查询结果报文中的所述白名单指示字段为所述第五值，所述信箱概况查询结果报文中的所述消息类型指示字段为所述第六值。
  17. 根据权利要求11-16任一项所述的方法，其特征在于，所述北斗网络设备接收到第一终端发送的信箱概况查询请求报文，包括：
    所述北斗网络设备接收到所述第一终端发送的X个SLC PDU；所述X为正整数；
    所述北斗网络设备在SLC层将所述X个SLC PDU拼成Y个SLC SDU；所述Y为正整数，所述Y小于或等于所述X；
    所述北斗网络设备将所述Y个SLC SDU上传至所述MDCP层，作为所述MDCP层的Y个MDCP PDU；
    所述北斗网络设备在所述MDCP层将所述Y个MDCP PDU拼成MDCP SDU；
    所述北斗网络设备在所述MDCP层将所述MDCP SDU去除填充数据和冗余长度指示字段后，上传至APP层，作为信箱概况查询请求报文。
  18. 根据权利要求17所述的方法，其特征在于，所述基于所述信箱概况查询请求报文，所述北斗网络设备生成信箱概况查询结果报文，包括：
    所述北斗网络设备根据所述信箱概况查询请求报文，在短消息中心中查询所述一个或多个第二终端发送给所述第一终端的信件的数量；
    所述北斗网络设备基于所述一个或多个第二终端发送给所述第一终端的信件的数量，生成信箱概况查询结果报文。
  19. 根据权利要求18所述的方法，其特征在于，所述北斗网络设备向所述第一终端发送信箱概况查询结果报文，包括：
    所述北斗网络设备在应用APP层将所述信箱概况查询结果报文下发至所述北斗网络设备的消息数据汇聚MDCP层，作为所述MDCP层的MDCP服务数据单元SDU；
    所述北斗网络设备将所述MDCP SDU加入填充数据和冗余长度指示字段后，拆分成一个或多个MDCP协议数据单元PDU；所述一个或多个MDCP PDU中包括第二MDCP PDU；
    所述北斗网络设备将所述第二MDCP PDU下发至卫星链路控制SLC层，作为所述SLC层的SLC SDU；
    所述北斗网络设备将所述SLC SDU拆分成一个或多个SLC PDU；
    所述北斗网络设备将所述一个或多个SLC PDU发送给所述第一终端。
  20. 一种北斗通信系统，其特征在于，包括第一终端和北斗网络设备；其中：
    所述第一终端用于向所述北斗网络设备发送信箱概况查询请求报文，所述信箱概况查询请求报文用于查询一个或多个第二终端发送给所述第一终端的信件的数量，所述信箱概况查询请求报文中包括消息ID字段，所述消息ID字段用于指示所述第一终端上一次接收成功的第一信件的ID，所述第一信件的ID用于指示所述北斗网络设备删除所述第一信件；
    所述北斗网络设备用于接收所述信箱概况查询请求报文；
    所述北斗网络设备用于基于所述信箱概况查询请求报文，生成信箱概况查询结果报文，所述信箱概况查询结果报文中包括信件数量字段；所述信件数量字段用于指示在所述第一信件的发送时间之后，所述一个或多个第二终端发送给所述第一终端的信件的数量，所述一个或多个第二终端发送给所述第一终端的信件的数量中不包括所述第一信件的数量；
    所述北斗网络设备用于向所述第一终端发送所述信箱概况查询结果报文；
    所述第一终端用于接收所述信箱概况查询结果报文。
  21. 一种通信装置，其特征在于，包括一个或多个处理器、一个或多个存储器和收发器；其中，所述收发器、所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令，当一个或多个处理器在执行所述计算机指令时，使得所述通信装置执行如权利要求1-10任一项所述的方法。
  22. 根据权利要求21所述的通信装置，其特征在于，所述通信装置为终端。
  23. 一种通信装置，其特征在于，包括一个或多个处理器、一个或多个存储器、收发器；其中，所述收发器、所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令，当一个或多个处理器在执行所述计算机指令时，使得所述通信装置执行如权利要求11-19任一项所述的方法。
  24. 根据权利要求23所述的通信装置，其特征在于，所述通信装置为北斗网络设备。
  25. 一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得所述计算机执行如权利要求1-10任一项所述的方法。
  26. 一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得所述计算机执行如权利要求11-19任一项所述的方法。
  27. 一种芯片或芯片系统，应用于终端，其特征在于，包括处理电路和接口电路，所述接口电路用于接收代码指令并传输至所述处理电路，所述处理电路用于运行所述代码指令以执行如权利要求1-10任一项所述的方法。
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