WO2022257988A1 - 通话建立方法、应用服务器系统、终端和通信网络设备及系统 - Google Patents

通话建立方法、应用服务器系统、终端和通信网络设备及系统 Download PDF

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Publication number
WO2022257988A1
WO2022257988A1 PCT/CN2022/097687 CN2022097687W WO2022257988A1 WO 2022257988 A1 WO2022257988 A1 WO 2022257988A1 CN 2022097687 W CN2022097687 W CN 2022097687W WO 2022257988 A1 WO2022257988 A1 WO 2022257988A1
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Prior art keywords
call
calling
predetermined
call request
identifier
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PCT/CN2022/097687
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English (en)
French (fr)
Inventor
张冬梅
毛安平
陈尚干
鲍俊
鄢舒
周悠玲
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中国电信股份有限公司
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Publication of WO2022257988A1 publication Critical patent/WO2022257988A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols

Definitions

  • the present disclosure relates to the field of network and security technologies, in particular to a method for establishing a call, an application server system, a terminal, and a communication network device and system.
  • the dial interface of the 2G secret call terminal has two sending keys, "clear" and "secret”.
  • the terminal When the calling user selects secret call, the terminal will send a secret call request message to the secret call platform while initiating a call. After the secret call platform receives the secret call request message, it sends a secret call notification message to the called terminal.
  • the called terminal When receiving the call, the called terminal receives an encrypted call notification text message, confirming that the call is an encrypted call. After the call is answered, the calling and called terminals switch to encrypted calls for communication.
  • One purpose of the present disclosure is to increase the success rate of establishing an encrypted session and improve the security of the session.
  • a method for establishing a call including: an AS (Application Server, application server) receives a call request from a calling terminal, and the call request includes a calling number, a called number and a number Decoding the set of identifiers; determining whether to use the first call type according to the call request; inserting a predetermined first identifier into the call request if it is determined to use the first call type; forwarding the call request to the called terminal, so that the called terminal When it is determined that the call request includes the predetermined first identifier, select the predetermined codec mode in the codec identifier set; insert the predetermined second identifier into the call response fed back by the called terminal, and send it to the calling terminal, so that the calling terminal The terminal determines to adopt the first call type and the predetermined codec method according to the predetermined second identifier.
  • AS Application Server, application server
  • determining whether to use the first call type according to the call request includes: the AS obtains the calling number and the called number in the call request; and determines whether the call request uses the first call type according to the calling number and the called number .
  • the first call type includes encrypted calls.
  • the AS receiving the call request from the calling terminal includes: the calling VoLTE (Voice over Long-Term Evolution, long-term evolution voice bearer) network will call The request is sent to the calling AS; the calling AS feeds back the call request to the calling VoLTE network; the calling VoLTE network forwards the call request to the called VoLTE network; the called VoLTE network sends the call request to the called AS; according to the call request
  • Determining whether to use the first call type includes: after receiving the call request from the called VoLTE network, the called AS determines whether to use the first call type according to the call request; Inserting the predetermined identifier includes: when the called AS determines to adopt the first call type, inserting the predetermined first identifier in the call request.
  • determining whether to use the first call type according to the call request further includes: when the calling AS receives a call request from the calling VoLTE network, determining whether to use the first call type according to the call request; Inserting the predetermined second identifier into the call response fed back by the calling terminal includes: when the calling AS determines to use the first call type according to the call request from the calling VoLTE network, after receiving the call response fed back by the called terminal, A predetermined second identifier is inserted into the call response.
  • the call response is sent by the called terminal to the called VoLTE network, it is returned to the calling AS according to the original route of the call request.
  • a method for establishing a call including: the calling terminal sends a call request to the AS, and the call request includes a calling number, a called number, and a set of codec identifiers, wherein the application server When the AS determines to use the first call type according to the call request, it inserts the predetermined first identifier into the call request so that the called terminal can select the predetermined codec mode in the codec identifier set; the calling terminal receives the call response In the case where the predetermined second identifier is included, it is determined to use the first call type to communicate with the called terminal, wherein the application server inserts the predetermined second identifier into the call response fed back by the called terminal when it is determined to use the first call type .
  • the method for establishing a call further includes: the calling terminal receiving a first response fed back by the called terminal; and determining a codec mode according to the first response.
  • the method for establishing a call further includes: the called terminal receives a call request from the AS; when it is determined that the call request includes a predetermined first identifier, select a predetermined codec mode from the set of codec identifiers; A response and a call response, wherein the first response includes the identifier of the predetermined codec mode.
  • an application server system including: a request receiving unit configured to receive a call request from a calling terminal, and the call request includes a calling number, a called number, and a codec An identification set; a call type determination unit configured to determine whether to adopt the first call type according to the call request; a first identification inserting unit configured to insert a predetermined first call type into the call request when it is determined to adopt the first call type Identification; the request forwarding unit is configured to forward the call request to the called terminal, so that the called terminal selects a predetermined codec mode in the codec identification set when it is determined that the call request includes a predetermined first identification; the second The identifier inserting unit is configured to insert a predetermined second identifier into the call response fed back by the called terminal, and send it to the calling terminal, so that the calling terminal determines to adopt a predetermined codec method according to the predetermined second identifier.
  • the application server system includes a calling application server AS and a called AS
  • the call type determining unit includes a calling side call type determining unit and a called side call type determining unit
  • the calling AS includes: a request receiving unit configured to receive a call request from the calling Long Term Evolution Voice over Bearer VoLTE network, where the calling VoLTE network sends the call request to Send to the calling AS; Feedback the call request to the calling VoLTE network;
  • the call type determination unit on the calling side is configured to determine whether to use the first call request according to the call request when receiving a call request from the calling VoLTE network call type; and a second identification inserting unit, configured to insert a predetermined first call response into the call response after receiving the call response fed back by the called terminal when the call type determination unit on the calling side determines to adopt the first call type.
  • the called AS includes: a call type determination unit on the called side, configured to determine whether to use the first call type according to the call request after receiving the call request from the called VoLTE network, wherein the calling VoLTE network receives the calling After the feedback from the request receiving unit called AS, the call request is forwarded to the called VoLTE network; the first identification insertion unit is configured to, when the called side call type determination unit determines to adopt the first call type, in the call request inserting a predetermined first identifier; and a request forwarding unit configured to forward the call request inserted with the predetermined first identifier to the called terminal.
  • a terminal including: a call request unit configured to send a call request to an AS, where the call request includes a calling number, a called number, and a codec identification set, wherein,
  • the AS determines to adopt the first call type according to the call request, it inserts a predetermined first identifier into the call request, so that the called terminal selects a predetermined codec mode in the codec identifier set;
  • the response receiving unit is configured to receive If the received call response includes the predetermined second identifier, it is determined to use the predetermined codec method to communicate with the called terminal.
  • the AS determines to use the first call type, it inserts Order the second logo.
  • the response receiving unit is further configured to receive the first response fed back by the called terminal, and determine the codec mode according to the first response.
  • the terminal further includes: a request receiving unit configured to receive a call request from the AS; when it is determined that the call request includes a predetermined first identifier, select a predetermined codec mode from the codec identifier set;
  • the response unit is configured to feed back a first response and a call response, wherein the first response includes an identifier of a predetermined codec mode.
  • a communication network device including: a memory; and a processor coupled to the memory, the processor is configured to execute any one of the above call establishment based on instructions stored in the memory method.
  • a computer-readable storage medium on which computer program instructions are stored, and when the instructions are executed by a processor, the steps of any one of the call establishment methods above are implemented.
  • a communication system including: any one of the above application server systems; and multiple terminals, each of which is any one of the above terminals.
  • FIG. 1 is a flowchart of some embodiments of the call establishment method of the present disclosure.
  • Fig. 2 is a signaling interaction diagram of some embodiments of the call establishment method of the present disclosure.
  • Fig. 3 is a signaling interaction diagram of some other embodiments of the call establishment method of the present disclosure.
  • Fig. 4 is a flow chart of some other embodiments of the call establishment method of the present disclosure.
  • Figure 5 is a schematic diagram of some embodiments of the application server system of the present disclosure.
  • Fig. 6 is a schematic diagram of some embodiments of a terminal of the present disclosure.
  • FIG. 7 is a schematic diagram of some embodiments of a communication network device of the present disclosure.
  • Fig. 8 is a schematic diagram of other embodiments of communication network devices of the present disclosure.
  • Figure 9 is a schematic diagram of some embodiments of the communication system of the present disclosure.
  • the calling terminal and the called terminal conduct media codec offer (proposal)/answer (response) negotiation through SDP (Session Description Protocol, Session Description Protocol).
  • SDP Session Description Protocol, Session Description Protocol
  • the calling terminal carries multiple supported optional codecs at the same time through the SDP offer, and the called terminal selects one of the codecs according to its own support as an SDP answer and returns it to the calling terminal, thereby completing the end-to-end media codec negotiation. There is no way for the calling terminal to guide the called terminal to select a specific codec.
  • FIG. 1 The flowchart of some embodiments of the call establishment method of the present disclosure is shown in FIG. 1 .
  • the AS receives a call request from a calling terminal, and the call request includes a calling number, a called number and a set of codec identifiers.
  • the codec identifier set includes identifiers of various codec modes allowed to be used by the calling terminal.
  • step 102 it is determined whether to use the first call type according to the call request.
  • the first call type includes encrypted calls.
  • whether to use the first call type is related to at least one of the calling number and the called number. Encrypted calls.
  • the AS obtains the calling number and called number in the call request, and then matches the calling number and called number with the pre-stored information, or queries the user's subscription information, and determines whether the call request adopts the first call type.
  • a predetermined first identifier is inserted into the call request.
  • the predetermined first identifier is an agreed character, and the AS inserts the agreed character into an idle field of the call request in the related art.
  • the call request is forwarded to the called terminal, so that when the called terminal determines that the call request includes a predetermined first identifier, it selects a predetermined codec method in the codec identifier set, and the predetermined codec method is a predetermined The codec method that can be adopted by the first call type.
  • the predetermined codec mode is determined by matching the allowed predetermined codec modes with the codec identification set in the call request.
  • a predetermined second identifier is inserted into the call response fed back by the called terminal, and sent to the calling terminal, so that the calling terminal determines to use the first call type and predetermined codec method according to the predetermined second identifier.
  • the calling terminal when the calling terminal recognizes that the call response includes the predetermined second identifier, it determines to use the first call type to communicate with the called terminal.
  • the calling terminal adopts the codec mode corresponding to the first call type.
  • the called terminal feeds back the response information, and the response carries the predetermined codec mode selected by the called terminal, so that the codec mode and call type of the calling party and the called party match.
  • the predetermined second identifier is the same as or different from the predetermined first identifier, and is inserted by the AS into a free field of the call response in the related art.
  • the AS can identify and determine the type of call, and notify the called and calling terminals respectively by inserting identifiers in the call request and call response, so that the two can complete the negotiation using the same codec type, improving The probability of successful negotiation is improved, the success rate of encrypted session establishment is improved, and the security of the call is guaranteed; no operation is required by the user, and the burden on the user is reduced.
  • FIG. 2 The signaling interaction diagram of some embodiments of the call establishment method of the present disclosure is shown in FIG. 2 .
  • the calling terminal 21 initiates a call request to the network side, and the call request includes the called number, calling number and SDP offer.
  • the SDP offer includes a set of codec identifiers, such as codec 1, codec 2, ..., codec n, where n is a positive integer.
  • the AS 22 on the network side determines whether to adopt the first call type. If it is determined that the first call type is used, a predetermined first identifier is inserted into the call request and sent to the called terminal. When it is determined that the first call type is used, the call request includes the called number, the calling number, the reserved first identifier, and the SDP offer.
  • the called terminal 23 obtains the call request, selects a codec method conforming to the first call type in the SDP offer of the call request, and generates a call response, and the encoding method in the SDP answer of the call response is the predetermined one selected by the called terminal. Codec method.
  • the called terminal sends the call responder to AS 22.
  • the AS 22 adds a predetermined second identifier to the call response, indicating that the first call type is used, and forwards the call response to the calling terminal 21.
  • the calling terminal determines the codec mode according to the SDP answer in the call response, and determines to adopt the first call type according to the predetermined second identifier.
  • the operation that triggers the use of a special call type (such as an encrypted call) can be transferred from the calling terminal to the network side for automatic execution, which reduces the burden on the user, avoids leakage caused by user misoperation, and improves user information security.
  • the command transmission of the specified call type is completed synchronously with the signaling transmission, which avoids the failure of the call type setting caused by the asynchronous sending of the short message and the call signaling, and improves the success rate of the call type setting and reliability.
  • FIG. 3 The signaling interaction diagram of some other embodiments of the call establishment method of the present disclosure is shown in FIG. 3 .
  • the calling terminal initiates a call and sends an Invite (call request) message to the calling VoLTE network.
  • the Invite includes the called number, calling number, and SDP offer, and the SDP offer includes a specific codec method (that is, the first call type Multiple optional codecs including allowed codecs), such as AMR-NB (Adaptive Multi Rate-Narrow Band Speech Codec, Adaptive Multi-Rate Narrowband Speech Coding), AMR-WB (Adaptive Multi-Rate Wideband Speech Codec, adaptive multi-rate wideband speech coding), EVS (Enhance Voice Services Codec, enhanced voice service coding), G.711, etc.
  • AMR-NB Adaptive Multi Rate-Narrow Band Speech Codec, Adaptive Multi-Rate Narrowband Speech Coding
  • AMR-WB Adaptive Multi-Rate Wideband Speech Codec, adaptive multi-rate wideband speech coding
  • EVS Enhance Voice Services Codec, enhanced voice service coding
  • the calling VoLTE network triggers the calling AS, and forwards the Invite message to the calling AS.
  • the calling AS analyzes the calling and called numbers, and judges whether the call conforms to a specific service scenario (such as a confidentiality scenario, etc.).
  • the calling AS sends an Invite message to the calling VoLTE network.
  • the calling VoLTE network routes the call to the called VoLTE network.
  • the called VoLTE network triggers the called AS, and forwards the Invite message to the called AS.
  • the called AS analyzes the calling and called numbers to determine whether the call meets a specific service scenario.
  • the called AS inserts a specific identifier (predetermined first identifier) into the Invite message, and sends the modified Invite message to the called VoLTE network.
  • the called VoLTE network connects the call, and sends an Invite message with a specific identifier to the called terminal.
  • the called terminal recognizes the specific identifier and performs corresponding processing, such as selecting a specific codec in the SDP offer as the SDP answer, determining the use of the first call type, and returning a 183 response message, which carries the SDP answer .
  • the called VoLTE network forwards the 183 response to the called AS, and forwards the original route to the calling VoLTE network and the calling terminal.
  • the called terminal rings and returns a 180 response to the called VoLTE network.
  • the called VoLTE network forwards the 180 response to the called AS, and forwards the original route to the calling VoLTE network.
  • the calling VoLTE network forwards the 180 response to the calling AS, and the calling AS, according to the judgment operation in the above 303, determines that the specific service scenario is met, in the 180 response sent to the calling VoLTE network Insert a specific identifier (predetermined second identifier, which may be the same as the predetermined first identifier).
  • the calling VoLTE network receives the modified 180 response from the calling AS.
  • the calling VoLTE network forwards the 180 response to the calling terminal, and the calling terminal recognizes the specific identifier and performs corresponding processing, such as determining that the first call type will be adopted subsequently.
  • the call for a specific business scenario does not require user intervention, and the network automatically judges and cooperates with the terminal to communicate with a specific codec; the service control information and voice call signaling are transmitted "along the road", and arrive at the terminal synchronously, real-time , The reliability is synchronized with the voice call, which improves the reliability of the call method.
  • FIG. 4 The flow charts of some other embodiments of the call establishment method of the present disclosure are shown in FIG. 4 , and the flow chart in FIG. 4 shows the operations of the calling terminal during the call establishment process.
  • step 401 the calling terminal sends a call request to the AS, and the call request includes a calling number, a called number and a set of codec identifiers.
  • step 402 after receiving the call response, the calling terminal determines whether the call response includes a predetermined second identifier. If the predetermined second identifier is included, step 403 is performed; otherwise, a default call mode is adopted.
  • the calling terminal determines to communicate with the called terminal using the first call type.
  • the calling terminal displays an identification using the first call type, so that the user can know the current call state conveniently.
  • the calling terminal may also receive the first response fed back by the called terminal, such as a 183 response.
  • the calling terminal determines the codec method according to the SDP answer carried in the first response.
  • the AS can identify and determine the call type, and the terminal can determine the use of the first call type based on the identifier inserted into the call response by the AS, and complete the use of the same call type.
  • the negotiation of the codec type improves the probability of successful negotiation, the success rate of encrypted session establishment, and the security of the call; it does not require the user to perform operations, reducing the burden on the user.
  • the called terminal during the call establishment process, if the called terminal receives a call request from the AS, it first determines whether the call request includes the first predetermined identifier. When it is determined that the call request includes a predetermined first identifier, select a predetermined codec from the codec identifier set, and feed back a first response and a call response, wherein the first response includes the identifier of the predetermined codec. In some embodiments, the called terminal displays an identification using the first call type, so that the user can know the current call status conveniently.
  • the called terminal can determine the use of the first call type based on the identifier inserted into the call request by the AS, and complete the negotiation using the same codec type, which improves the probability of successful negotiation and the success rate of encrypted session establishment , improve the security of the call; no operation is required by the user, reducing the burden on the user.
  • FIG. 5 A schematic diagram of some embodiments of the AS system of the present disclosure is shown in FIG. 5 .
  • the request receiving unit 501 is capable of receiving a call request from a calling terminal, and the call request includes a calling number, a called number and a set of codec identifiers.
  • the call type determining unit 502 can determine whether to adopt the first call type according to the call request.
  • the first call type includes encrypted calls.
  • the first identifier inserting unit 503 can insert a predetermined first identifier into the call request when it is determined that the first call type is used.
  • the predetermined first identifier is an agreed character, which is inserted by the AS into the idle field of the call request in the related art.
  • the request forwarding unit 504 is capable of forwarding the call request to the called terminal, so that when the called terminal determines that the call request includes a predetermined first identifier, it selects a predetermined codec method in the codec identifier set, and the predetermined codec method is predetermined The codec method that can be used for the first call type.
  • there are one or more allowed predetermined codec methods and by matching the allowed predetermined codec methods with the codec identification set in the call request, the selection range of the predetermined codec methods is determined, and then selected A predetermined codec method.
  • the second identifier inserting unit 505 can insert a predetermined second identifier into the call response fed back by the called terminal, and send it to the calling terminal, so that the calling terminal can determine to use the first call type and predetermined codec according to the predetermined second identifier.
  • the calling terminal when the calling terminal recognizes that the call response includes the predetermined second identifier, it determines to use the first call type to communicate with the called terminal.
  • the calling terminal adopts the codec mode corresponding to the first call type.
  • the called terminal feeds back the response information, and the response carries the predetermined codec mode selected by the called terminal, so that the codec mode and call type of the calling party and the called party match.
  • Such an AS system can identify and determine the type of call by the AS, and notify the called and calling terminals respectively by inserting identifiers in the call request and call response, so that the two can complete the negotiation using the same codec type, which improves the efficiency of the call.
  • the probability of successful negotiation increases the success rate of encrypted session establishment and improves the security of the call; no user operation is required to reduce the burden on the user.
  • the AS system includes a calling AS and a called AS, and the call type determination unit is divided into a call type determination unit on the calling side and a call type determination unit on the called side.
  • the above mentioned request receiving unit, calling side call type determining unit and second identifier inserting unit belong to the calling AS; the called side call type determining unit, first identifier inserting unit and request forwarding unit belong to the called AS.
  • the request receiving unit can receive a call request from the calling VoLTE network, where the calling VoLTE network sends the call request to the calling AS when receiving the call request from the calling terminal; further, the request receiving unit will call Request feedback to the calling VoLTE network;
  • the call type determination unit on the calling side can determine whether to use the first call type according to the call request when receiving a call request from the calling VoLTE network;
  • the second identifier inserting unit can insert a predetermined second identifier into the ringing response call response after receiving the ringing response call response fed back by the called terminal when the calling side call type determination unit determines to adopt the first call type. logo.
  • the call type determination unit on the called side can determine whether to adopt the first call type according to the call request after receiving the call request from the called VoLTE network, wherein the calling VoLTE network receives the feedback from the calling AS request receiving unit After that, forward the call request to the called VoLTE network;
  • the first identifier inserting unit is capable of inserting a predetermined first identifier into the call request when the call type determination unit on the called side determines to adopt the first call type;
  • the request forwarding unit can forward the call request inserted with the predetermined first identifier to the called terminal.
  • the call for a specific business scenario does not require user intervention, and the network automatically judges and cooperates with the terminal to communicate using a specific codec;
  • the reliability is synchronized with the voice call, which improves the reliability of the call method.
  • each AS in the AS system includes all units as shown in FIG. 5 , so as to ensure that each AS can serve as the calling AS and the called AS, and ensure the reliability of two-way call establishment.
  • FIG. 6 A schematic diagram of some embodiments of the terminal of the present disclosure is shown in FIG. 6 .
  • the terminal is a calling terminal, and includes a call request unit 601 and a response receiving unit 602 .
  • the call request unit 601 can send a call request, and the call request includes a calling number, a called number and a set of codec identifiers.
  • the call response that can be received by the response receiving unit 602 includes the predetermined second identifier, determine to use the first call type to communicate with the called terminal.
  • Such a calling terminal does not need to actively trigger the specified call type, but can determine the use of the first call type based on the identifier inserted into the call response by the AS, and complete the negotiation using the same codec type, which improves the probability of successful negotiation and improves the security of encrypted calls.
  • the success rate of the establishment improves the security of the call; no user operation is required to reduce the burden on the user.
  • the terminal is a called terminal, and includes a request receiving unit 603 and a responding unit 604 .
  • the request receiving unit 603 can receive the call request from the AS; if it is determined that the call request includes a predetermined first identifier, select a predetermined codec mode from the codec identifier set.
  • the responding unit 604 can feed back a first response and a call response, where the first response includes an identifier of a predetermined codec mode.
  • Such a terminal can be used as the called terminal, based on the identifier inserted into the call request by the AS to determine the use of the first call type, and complete the negotiation using the same codec type, which improves the probability of successful negotiation and the success rate of encrypted session establishment. , improve the security of the call; no operation is required by the user, reducing the burden on the user.
  • each terminal includes both the call request unit 601 and the response receiving unit 602 required in the calling terminal, and the request receiving unit 603 and response unit 604 required in the called terminal, thereby ensuring two-way communication Build reliability.
  • the terminal includes a communication module and an application module.
  • the communication module can initiate a call request, receive a call response, and check whether it carries a predetermined second identifier. If the call response carries the predetermined second identifier, it is passed to the application module.
  • the application module can receive the predetermined second identification delivered by the communication module, and perform corresponding processing on the communication content, such as encryption operation, and perform media transmission in an agreed predetermined codec mode; in addition, the application module can also be used in the calling terminal UI (User Interface, The user interface) interface indicates in a predetermined eye-catching manner that the call is processed in a predetermined codec manner.
  • UI User Interface
  • the communication module when serving as a called terminal, can receive a call request and check whether it carries a predetermined first identifier. If the predetermined first identifier is included, the call request is passed to the application module; in addition, the communication module can also generate an SDP answer according to the predetermined codec method specified by the application module, and return the calling terminal through a call response message.
  • the application module can receive the predetermined first identification from the communication module, and instruct the communication module to use a specific codec as the SDP answer; the application module can process the communication content according to the predetermined first identification, and perform media transmission in the agreed predetermined codec mode ; In addition, the application module can also indicate in a predetermined conspicuous manner on the UI interface of the called terminal that the call is processed in a predetermined codec method.
  • Such a terminal can, based on its communication module and application module, cooperate with the network side to realize the determination and establishment of the call type according to the call signaling, and at the same time display signs on the user terminal, so that the user can understand and monitor the current communication mode, and further improve user information security. guaranteed reliability.
  • the communication network device may be an AS system or a terminal, including a memory 701 and a processor 702 .
  • the storage 701 may be a disk, a flash memory or any other non-volatile storage medium.
  • the memory is used to store the instructions in the corresponding embodiments of the above call establishment method.
  • the processor 702 is coupled to the memory 701 and may be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller.
  • the processor 702 is used to execute the instructions stored in the memory, which can increase the probability of successful negotiation, increase the success rate of encrypted session establishment, and improve the security of the call; it does not require the user to perform operations, reducing the user's burden.
  • a communications network device 800 includes a memory 801 and a processor 802 .
  • the processor 802 is coupled to the memory 801 through the BUS bus 803 .
  • the communication network device 800 can also be connected to an external storage device 805 through a storage interface 804 to call external data, and can also be connected to a network or another computer system (not shown) through a network interface 806 . No more detailed introduction here.
  • the data instructions are stored in the memory, and the above instructions are processed by the processor, which can increase the probability of successful negotiation, increase the success rate of encrypted session establishment, and improve the security of the call; there is no need for the user to perform operations, reducing the burden on the user .
  • a computer-readable storage medium stores computer program instructions thereon, and when the instructions are executed by a processor, the steps of the methods in the corresponding embodiments of the call establishment method are implemented.
  • the embodiments of the present disclosure may be provided as methods, apparatuses, or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein. .
  • the communication system includes any one of the above application server systems 91, and executes any one of the above call establishment methods performed by the AS.
  • the communication system also includes a plurality of terminals 921-92n, n is a positive integer greater than or equal to 2, each terminal is any one of the above terminals, and each terminal can be a calling terminal or a called terminal at the same time , executing any one of the call establishment methods performed by the calling terminal or the called terminal above.
  • Such a communication system can identify and determine the call type by the AS, and notify the called and calling terminals respectively by inserting identifiers in the call request and call response, so that the two can complete the negotiation using the same codec type, which improves the
  • the probability of successful negotiation increases the success rate of encrypted session establishment and improves the security of the call; no user operation is required to reduce the burden on the user.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
  • the methods and apparatus of the present disclosure may be implemented in many ways.
  • the methods and devices of the present disclosure may be implemented by software, hardware, firmware or any combination of software, hardware, and firmware.
  • the above sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise.
  • the present disclosure can also be implemented as programs recorded in recording media, the programs including machine-readable instructions for realizing the method according to the present disclosure.
  • the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

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Abstract

本公开提出一种通话建立方法、应用服务器系统、终端和通信网络设备及系统，涉及网络与安全技术领域。本公开的一种通话建立方法，包括：应用服务器AS接收来自主叫终端的呼叫请求；根据呼叫请求确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识；将呼叫请求转发给被叫终端，以便被叫终端在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式；在被叫终端反馈的呼叫响应中插入预定第二标识，并发送给主叫终端，以便主叫终端根据预定第二标识确定采用第一通话类型和预定编解码方式。通过这样的方法，能够提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。

Description

通话建立方法、应用服务器系统、终端和通信网络设备及系统
相关申请的交叉引用
本申请是以CN申请号为202110642785.2，申请日为2021年6月9日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及网络与安全技术领域，特别是一种通话建立方法、应用服务器系统、终端和通信网络设备及系统。
背景技术
2G密话终端拨号界面有“明”“密”2个发送键，主叫用户选择密话时，终端在发起呼叫的同时，会向密话平台发送密话请求短信。密话平台收到密话请求短信后，向被叫终端发送密话通知短信。被叫终端在收到呼叫的同时收到密话通知短信，确认此次呼叫为密话。待通话应答后，主、被叫终端切换为密话进行通信。
发明内容
本公开的一个目的在于提高密话建立的成功率，提高通话的安全性。
根据本公开的一些实施例的一个方面，提出一种通话建立方法，包括：AS(Application Server，应用服务器)接收来自主叫终端的呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合；根据呼叫请求确定是否采用第一通话类型；在确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识；将呼叫请求转发给被叫终端，以便被叫终端在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式；在被叫终端反馈的呼叫响应中插入预定第二标识，并发送给主叫终端，以便主叫终端根据预定第二标识确定采用第一通话类型和预定编解码方式。
在一些实施例中，根据呼叫请求确定是否采用第一通话类型包括：AS获取呼叫请求中的主叫号码和被叫号码；根据主叫号码和被叫号码，确定呼叫请求是否采用第一通话类型。
在一些实施例中，第一通话类型包括加密通话。
在一些实施例中，AS接收来自主叫终端的呼叫请求包括：主叫VoLTE(Voice over Long-Term Evolution，长期演进语音承载)网络在收到来自主叫终端的呼叫请求的情况下，将呼叫请求发送给主叫AS；主叫AS将呼叫请求反馈给主叫VoLTE网络；主叫VoLTE网络将呼叫请求转发给被叫VoLTE网络；被叫VoLTE网络将呼叫请求发送给被叫AS；根据呼叫请求确定是否采用第一通话类型包括：被叫AS在收到来自被叫VoLTE网络的呼叫请求后，根据呼叫请求确定是否采用第一通话类型；在确定采用第一通话类型的情况下，在呼叫请求中插入预定标识包括：被叫AS在确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识。
在一些实施例中，根据呼叫请求确定是否采用第一通话类型还包括：主叫AS在收到来自主叫VoLTE网络的呼叫请求的情况下，根据呼叫请求确定是否采用第一通话类型；在被叫终端反馈的呼叫响应中插入预定第二标识包括：主叫AS在根据来自主叫VoLTE网络的呼叫请求确定采用第一通话类型的情况下，在收到被叫终端反馈的呼叫响应后，在呼叫响应中插入预定第二标识。
在一些实施例中，呼叫响应由被叫终端发送给被叫VoLTE网络后，按照呼叫请求的原路返回给主叫AS。
根据本公开的一些实施例的一个方面，提出一种通话建立方法，包括：主叫终端向AS发送呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合，其中，应用服务器AS在根据呼叫请求确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识，以便被叫终端在编解码标识集合中选择预定编解码方式；主叫终端在收到的呼叫响应中包括预定第二标识的情况下，确定与被叫终端采用第一通话类型通话，其中，应用服务器在确定采用第一通话类型的情况下在被叫终端反馈的呼叫响应中插入预定第二标识。
在一些实施例中，通话建立方法还包括：主叫终端接收被叫终端反馈的第一响应；根据第一响应确定编解码方式。
在一些实施例中，通话建立方法还包括：被叫终端接收来自AS的呼叫请求；在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式；反馈第一响应和呼叫响应，其中，第一响应中包括预定编解码方式的标识。
根据本公开的一些实施例的一个方面，提出一种应用服务器系统，包括：请求接收单元，被配置为接收来自主叫终端的呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合；通话类型确定单元，被配置为根据呼叫请求确定是否采用第一 通话类型；第一标识插入单元，被配置为在确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识；请求转发单元，被配置为将呼叫请求转发给被叫终端，以便被叫终端在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式；第二标识插入单元，被配置为在被叫终端反馈的呼叫响应中插入预定第二标识，并发送给主叫终端，以便主叫终端根据预定第二标识确定采用预定编解码方式。
在一些实施例中，应用服务器系统包括主叫应用服务器AS和被叫AS，通话类型确定单元包括主叫侧通话类型确定单元和被叫侧通话类型确定单元，
其中，主叫AS包括：请求接收单元，被配置为接收来自主叫长期演进语音承载VoLTE网络的呼叫请求，其中主叫VoLTE网络在收到来自主叫终端的呼叫请求的情况下，将呼叫请求发送给主叫AS；将呼叫请求反馈给主叫VoLTE网络；主叫侧通话类型确定单元，被配置为在收到来自主叫VoLTE网络的呼叫请求的情况下，根据呼叫请求确定是否采用第一通话类型；和第二标识插入单元，被配置为在主叫侧通话类型确定单元确定采用第一通话类型的情况下，在收到被叫终端反馈的呼叫响应后，在呼叫响应中插入预定第二标识；
被叫AS包括：被叫侧通话类型确定单元，被配置为在收到来自被叫VoLTE网络的呼叫请求后，根据呼叫请求确定是否采用第一通话类型，其中，主叫VoLTE网络在收到主叫AS的请求接收单元的反馈后，将呼叫请求转发给被叫VoLTE网络；第一标识插入单元，被配置为在被叫侧通话类型确定单元确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识；和请求转发单元，被配置为将已插入预定第一标识的呼叫请求转发给被叫终端。
根据本公开的一些实施例的一个方面，提出一种终端，包括：呼叫请求单元，被配置为向AS发送呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合，其中，AS在根据呼叫请求确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识，以便被叫终端在编解码标识集合中选择预定编解码方式；响应接收单元，被配置为在收到的呼叫响应中包括预定第二标识的情况下，确定与被叫终端采用预定编解码方式通话，其中，AS在确定采用第一通话类型的情况下，在被叫终端反馈的呼叫响应中插入预定第二标识。
在一些实施例中，响应接收单元还被配置为接收被叫终端反馈的第一响应，并根据第一响应确定编解码方式。
在一些实施例中，终端还包括：请求接收单元，被配置为接收来自AS的呼叫请求；在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式；响应单元，被配置为反馈第一响应和呼叫响应，其中，第一响应中包括预定编解码方式的标识。
根据本公开的一些实施例的一个方面，提出一种通信网络设备，包括：存储器；以及耦接至存储器的处理器，处理器被配置为基于存储在存储器的指令执行上文中任意一种通话建立方法。
根据本公开的一些实施例的一个方面，提出一种计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现上文中任意一种通话建立方法的步骤。
根据本公开的一些实施例的一个方面，提出一种通信系统，包括：上文中任意一种应用服务器系统；和多个终端，每个终端为上文中任意一种终端。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开的通话建立方法的一些实施例的流程图。
图2为本公开的通话建立方法的一些实施例的信令交互图。
图3为本公开的通话建立方法的又一些实施例的信令交互图。
图4为本公开的通话建立方法的再一些实施例的流程图。
图5为本公开的应用服务器系统的一些实施例的示意图。
图6为本公开的终端的一些实施例的示意图。
图7为本公开的通信网络设备的一些实施例的示意图。
图8为本公开的通信网络设备的另一些实施例的示意图。
图9为本公开的通信系统的一些实施例的示意图。
具体实施方式
由于语音是实时业务，而短信是非实时业务，两者的路径不一致。密话平台下发的密话通知短信很难与语音呼叫同步到达被叫终端，例如，移动交换机从语音呼叫发起寻呼到建立业务信道的这一时间段内收到其他下行短信，则会返回失败，从而导致 密话建立失败。
在VoLTE网络里，主、被叫终端通过SDP(Session Description Protocol，会话描述协议)进行媒体编解码offer(提议)/answer(响应)协商。主叫终端通过SDP offer同时携带多个支持的可选编解码，被叫终端根据自身支持情况选择其中一个编解码作为SDP answer返回给主叫终端，从而完成端到端媒体编解码协商。主叫终端没有办法去引导被叫终端选择特定编解码。
本公开的通话建立方法的一些实施例的流程图如图1所示。
在步骤101中，AS接收来自主叫终端的呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合。在一些实施例中，编解码标识集合中包括主叫终端允许使用的各种编解码方式的标识。
在步骤102中，根据呼叫请求确定是否采用第一通话类型。在一些实施例中，第一通话类型包括加密通话。
在一些实施例中，是否采用第一通话类型与主叫号码、被叫号码中至少一个相关，例如保密单位或开通加密通话业务的用户所拥有的号码作为主叫或被叫号码时，确定采用加密通话。在一些实施例中，AS获取呼叫请求中的主叫号码和被叫号码，进而将主叫号码和被叫号码与预存的信息进行匹配，或查询用户签约信息，确定呼叫请求是否采用第一通话类型。
在步骤103中，在确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识。在一些实施例中，预定第一标识为约定字符，由AS将约定字符插入相关技术中呼叫请求的空闲字段。
在步骤104中，将呼叫请求转发给被叫终端，以便被叫终端在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式，预定编码方式为预定的第一通话类型能够采用的编解码方式。在一些实施例中，允许的预定编解码方式为一种或多种，通过将允许的预定编解码方式与呼叫请求中的编解码标识集合匹配，确定预定编解码方式。
在步骤105中，在被叫终端反馈的呼叫响应中插入预定第二标识，并发送给主叫终端，以便主叫终端根据预定第二标识确定采用第一通话类型和预定编解码方式。在一些实施例中，主叫终端在识别出呼叫响应中包括预定第二标识的情况下，确定采用第一通话类型与被叫终端通话。在一些实施例中，主叫终端采用第一通话类型对应的编解码方式。在另一些实施例中，由被叫终端反馈响应信息，在响应中携带被叫终端 选择的预定编解码方式，从而使主、被叫双方的编解码方式、通话类型匹配。
在一些实施例中，预定第二标识与预定第一标识相同或不同，由AS插入相关技术中的呼叫响应的空闲字段。
通过这样的方法，能够由AS识别、确定通话类型，并通过在呼叫请求、呼叫响应中插入标识的方式分别通知被叫、主叫终端，使两者完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，保证通话的安全性；无需用户执行操作，降低用户负担。
本公开的通话建立方法的一些实施例的信令交互图如图2所示。
在201中，主叫终端21向网络侧发起呼叫请求，呼叫请求中包括被叫号码、主叫号码以及SDP offer。SDP offer中包括编解码标识集合，如编解码1、编解码2、.……、编解码n，n为正整数。
在202中，网络侧的AS 22获取呼叫请求后，确定是否采用第一通话类型。若确定采用第一通话类型，则在呼叫请求中插入预定第一标识，并发送给被叫终端。在确定采用第一通话类型的情况下，呼叫请求中包括被叫号码、主叫号码，预定第一标识，以及SDP offer。
在203中，被叫终端23得到呼叫请求，在呼叫请求的SDP offer中选择符合第一通话类型的编解码方式，生成呼叫响应，呼叫响应的SDP answer中的编码方式为被叫终端选择的预定编解码方式。被叫终端将呼叫响应方发送给AS 22。
在204中，AS 22在呼叫响应中增加预定第二标识，指示采用第一通话类型，并将呼叫响应转发给主叫终端21。主叫终端根据呼叫响应中的SDP answer确定编解码方式，并根据预定第二标识确定采用第一通话类型。
通过这样的方法，能够将触发采用特殊通话类型(如加密通话)的操作由主叫终端转为网络侧自动执行，降低了用户负担，同时避免由于用户误操作造成的泄密，提高了用户信息安全性；另外，在呼叫过程中随着信令发送同步完成指定通话类型的指令传输，避免了由于短信发送与通话信令不同步造成的通话类型设置失败的问题，提高了通话类型设置的成功率和可靠性。
本公开的通话建立方法的又一些实施例的信令交互图如图3所示。
在301中，主叫终端发起呼叫，向主叫VoLTE网络发送Invite(呼叫请求)消息，Invite中包括被叫号码、主叫号码、SDP offer，SDP offer包含特定编解码方式(即第一通话类型所允许使用的编解码方式)在内的多个可选编解码，例如AMR-NB (Adaptive Multi Rate-Narrow Band Speech Codec，自适应多速率窄带语音编码)、AMR-WB(Adaptive Multi-Rate Wideband Speech Codec，自适应多速率宽带语音编码)、EVS(Enhance Voice Services Codec，增强语音服务编码)、G.711等。
在302中，主叫VoLTE网络触发主叫AS，转发Invite消息给主叫AS。
在303中，主叫AS分析主、被叫号码，判断该呼叫是否符合特定业务场景(例如保密场景等)。主叫AS下发Invite消息给主叫VoLTE网络。
在304中，主叫VoLTE网络将呼叫路由至被叫VoLTE网络。
在305中，被叫VoLTE网络触发被叫AS，转发Invite消息给被叫AS。
在306中，被叫AS分析主、被叫号码，判断该呼叫是否符合特定业务场景。在符合特定业务场景的情况下，被叫AS在Invite消息中插入特定标识(预定第一标识)，并将修改后的Invite消息给被叫VoLTE网络。
在307中，被叫VoLTE网络接续呼叫，将带有特定标识的Invite消息发送至被叫终端。
在308中，被叫终端识别出特定标识，作相应处理，如选定SDP offer中的特定编解码作为SDP answer，确定采用第一通话类型，并返回183响应消息，183响应消息中携带SDP answer。
在309～314中，被叫VoLTE网络将183响应转发给被叫AS，原路转发至主叫VoLTE网络、主叫终端。
在315中，被叫终端振铃，向被叫VoLTE网络返回180响应。
在316～318中，被叫VoLTE网络将180响应转发给被叫AS，原路转发至主叫VoLTE网络。
在319中，主叫VoLTE网络将180响应转发给主叫AS，主叫AS根据在上述303中的判断操作，在确定符合特定业务场景的情况下，在发送给主叫VoLTE网络的180响应中插入特定标识(预定第二标识，可以与预定第一标识相同)。
在320中，主叫VoLTE网络接收主叫AS修改后的180响应。
在321中，主叫VoLTE网络将180响应转发给主叫终端，由主叫终端识别出特定标识，作相应处理，例如确定后续采用第一通话类型。
通过这样的方法，针对特定业务场景的通话，无需用户干预，由网络自动判断并协同终端采用特定编解码进行通信；业务控制信息与语音呼叫信令“随路”传送，同步到达终端，实时性、可靠性同步于语音呼叫，提高了通话方式的可靠性。
本公开的通话建立方法的再一些实施例的流程图如图4所示，图4中的流程示出了主叫终端在通话建立过程中的操作。
在步骤401中，主叫终端向AS发送呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合。
在步骤402中，主叫终端在收到的呼叫响应后，判断呼叫响应中是否包括预定第二标识。若包括预定第二标识，则执行步骤403；否则，采用默认的通话方式。
在步骤403中，主叫终端确定与被叫终端采用第一通话类型通话。在一些实施例中，主叫终端显示采用第一通话类型的标识，方便用户了解当前的通话状态。
在一些实施例中，主叫终端还可以接收被叫终端反馈的第一响应，如183响应。主叫终端根据第一响应中携带的SDP answer确定编解码方式。
通过这样的方法，在主叫终端无需主动触发选择通话类型的情况下，能够由AS识别、确定通话类型，终端能够基于由AS插入呼叫响应中的标识确定采用第一通话类型，并完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
在一些实施例中，在通话建立过程中，被叫终端若接收到来自AS的呼叫请求，则先判断呼叫请求中是否包括第一预定标识。在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式，并反馈第一响应和呼叫响应，其中，第一响应中包括预定编解码方式的标识。在一些实施例中，被叫终端显示采用第一通话类型的标识，方便用户了解当前的通话状态。
通过这样的方法，被叫终端能够基于由AS插入呼叫请求中的标识确定采用第一通话类型，并完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
本公开的AS系统的一些实施例的示意图如图5所示。
请求接收单元501能够接收来自主叫终端的呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合。
通话类型确定单元502能够根据呼叫请求确定是否采用第一通话类型。在一些实施例中，第一通话类型包括加密通话。
第一标识插入单元503能够在确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识。在一些实施例中，预定第一标识为约定字符，由AS插入相关技术中的呼叫请求的空闲字段。
请求转发单元504，能够将呼叫请求转发给被叫终端，以便被叫终端在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式，预定编码方式为预定的第一通话类型能够采用的编解码方式。在一些实施例中，允许的预定编解码方式为一种或多种，通过将允许的预定编解码方式与呼叫请求中的编解码标识集合匹配，确定预定编解码方式的选择范围，进而从中选择一种预定编解码方式。
第二标识插入单元505能够在被叫终端反馈的呼叫响应中插入预定第二标识，并发送给主叫终端，以便主叫终端根据预定第二标识确定采用第一通话类型和预定编解码方式。在一些实施例中，主叫终端在识别出呼叫响应中包括预定第二标识的情况下，确定采用第一通话类型与被叫终端通话。在一些实施例中，主叫终端采用第一通话类型对应的编解码方式。在另一些实施例中，由被叫终端反馈响应信息，在响应中携带被叫终端选择的预定编解码方式，从而使主、被叫双方的编解码方式、通话类型匹配。
这样的AS系统能够由AS识别、确定通话类型，并通过在呼叫请求、呼叫响应中插入标识的方式分别通知被叫、主叫终端，使两者完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
在一些实施例中，AS系统中包括主叫AS和被叫AS，通话类型确定单元分为主叫侧通话类型确定单元和被叫侧通话类型确定单元。
上文中提到的请求接收单元、主叫侧通话类型确定单元和第二标识插入单元属于主叫AS；被叫侧通话类型确定单元、第一标识插入单元和请求转发单元属于被叫AS。
在主叫AS侧：
请求接收单元能够接收来自主叫VoLTE网络的呼叫请求，其中主叫VoLTE网络在收到来自主叫终端的呼叫请求的情况下，将呼叫请求发送给主叫AS；进一步的，请求接收单元将呼叫请求反馈给主叫VoLTE网络；
主叫侧通话类型确定单元能够在收到来自主叫VoLTE网络的呼叫请求的情况下，根据呼叫请求确定是否采用第一通话类型；
第二标识插入单元能够在主叫侧通话类型确定单元确定采用第一通话类型的情况下，在收到被叫终端反馈的振铃响应呼叫响应后，在振铃响应呼叫响应中插入预定第二标识。
在被叫AS侧：
被叫侧通话类型确定单元能够在收到来自被叫VoLTE网络的呼叫请求后，根据 呼叫请求确定是否采用第一通话类型，其中，主叫VoLTE网络在收到主叫AS的请求接收单元的反馈后，将呼叫请求转发给被叫VoLTE网络；
第一标识插入单元能够在被叫侧通话类型确定单元确定采用第一通话类型的情况下，在呼叫请求中插入预定第一标识；
请求转发单元能够将已插入预定第一标识的呼叫请求转发给被叫终端。
这样的系统中，针对特定业务场景的通话无需用户干预，由网络自动判断并协同终端采用特定编解码进行通信；业务控制信息与语音呼叫信令“随路”传送，同步到达终端，实时性、可靠性同步于语音呼叫，提高了通话方式的可靠性。
在一些实施例中，AS系统中的每个AS均包括如图5中所示的全部单元，从而保证每个AS均能够作为主叫AS和被叫AS，保证双向通话建立的可靠性。
本公开的终端的一些实施例的示意图如图6所示。
在一些实施例中，终端为主叫终端，包括呼叫请求单元601和响应接收单元602。
呼叫请求单元601能够发送呼叫请求，呼叫请求中包括主叫号码、被叫号码和编解码标识集合。
响应接收单元602能够收到的呼叫响应中包括预定第二标识的情况下，确定与被叫终端采用第一通话类型通话。
这样的主叫终端无需主动触发指定呼叫类型，能够基于由AS插入呼叫响应中的标识确定采用第一通话类型，并完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
在一些实施例中，终端为被叫终端，包括请求接收单元603和响应单元604。
请求接收单元603能够接收来自AS的呼叫请求；在确定呼叫请求中包括预定第一标识的情况下，在编解码标识集合中选择预定编解码方式。
响应单元604能够反馈第一响应和呼叫响应，其中，第一响应中包括预定编解码方式的标识。
这样的终端能够作为被叫终端，基于由AS插入呼叫请求中的标识确定采用第一通话类型，并完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
在一些实施例中，每个终端既包括主叫终端中所需的呼叫请求单元601和响应接收单元602，也包括被叫终端中所需的请求接收单元603和响应单元604，从而确保双 向通信建立的可靠性。
在一些实施例中，终端包括通信模块和应用模块。作为主叫终端时，通信模块能够发起呼叫请求，且能够接收呼叫响应，并检查是否携带预定第二标识。若呼叫响应中携带预定第二标识，则传递给应用模块。应用模块能够接收通信模块传递的预定第二标识，对通信内容进行对应处理，如加密操作，以约定的预定编解码方式进行媒体传送；另外，应用模块还能够在主叫终端UI(User Interface，用户接口)界面以预定的醒目的方式表示该呼叫采用了预定编解码方式处理。
在一些实施例中，作为被叫终端时，通信模块能够接收呼叫请求，检查是否携带预定第一标识。若包含预定第一标识，则将呼叫请求传递给应用模块；另外，通信模块还能够根据应用模块指定的预定编解码方式生成SDP answer，并通过呼叫响应消息返回主叫终端。应用模块能够接收来自通信模块的预定第一标识，指示通信模块使用特定编解码作为SDP answer；应用模块能够根据预定第一标识对通信内容进行对应的处理，以约定的预定编解码方式进行媒体传送；另外，应用模块还能够在被叫终端UI界面以预定的醒目的方式表示该呼叫采用了预定编解码方式处理。
这样的终端能够基于其通信模块和应用模块，在配合网络侧实现呼叫类型随呼叫信令确定、建立的同时，在用户终端显示标志，方便用户了解、监控当前的通信方式，进一步提高用户信息安全保障的可靠性。
本公开通信网络设备的一个实施例的结构示意图如图7所示。通信网络设备可以为AS系统，也可以为终端，包括存储器701和处理器702。其中：存储器701可以是磁盘、闪存或其它任何非易失性存储介质。存储器用于存储上文中通话建立方法的对应实施例中的指令。处理器702耦接至存储器701，可以作为一个或多个集成电路来实施，例如微处理器或微控制器。该处理器702用于执行存储器中存储的指令，能够提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
在一个实施例中，还可以如图8所示，通信网络设备800包括存储器801和处理器802。处理器802通过BUS总线803耦合至存储器801。该通信网络设备800还可以通过存储接口804连接至外部存储装置805以便调用外部数据，还可以通过网络接口806连接至网络或者另外一台计算机系统(未标出)。此处不再进行详细介绍。
在该实施例中，通过存储器存储数据指令，再通过处理器处理上述指令，能够提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操 作，降低用户负担。
在另一个实施例中，一种计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现通话建立方法对应实施例中的方法的步骤。本领域内的技术人员应明白，本公开的实施例可提供为方法、装置、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用非瞬时性存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开的通信系统的一些实施例的示意图如图9所示。通信系统包括上文中任意一种应用服务器系统91，执行上文中任意一项由AS执行的通话建立方法。通信系统还包括多个终端921～92n，n为大于等于2的正整数，每个终端为上文中任意一种终端，每个终端在同一时刻可以作为主叫终端或被叫终端中的一种，执行上文中任意一项由主叫终端或被叫终端执行的通话建立方法。
这样的通信系统能够由AS识别、确定通话类型，并通过在呼叫请求、呼叫响应中插入标识的方式分别通知被叫、主叫终端，使两者完成采用相同的编解码类型的协商，提高了协商成功的概率，提高密话建立的成功率，提高通话的安全性；无需用户执行操作，降低用户负担。
本公开是参照根据本公开实施例的方法、设备(系统)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计 算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
至此，已经详细描述了本公开。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
可能以许多方式来实现本公开的方法以及装置。例如，可通过软件、硬件、固件或者软件、硬件、固件的任何组合来实现本公开的方法以及装置。用于所述方法的步骤的上述顺序仅是为了进行说明，本公开的方法的步骤不限于以上具体描述的顺序，除非以其它方式特别说明。此外，在一些实施例中，还可将本公开实施为记录在记录介质中的程序，这些程序包括用于实现根据本公开的方法的机器可读指令。因而，本公开还覆盖存储用于执行根据本公开的方法的程序的记录介质。
最后应当说明的是：以上实施例仅用以说明本公开的技术方案而非对其限制；尽管参照较佳实施例对本公开进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本公开的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本公开技术方案的精神，其均应涵盖在本公开请求保护的技术方案范围当中。

Claims (17)

  1. 一种通话建立方法，包括：
    应用服务器AS接收来自主叫终端的呼叫请求，所述呼叫请求中包括主叫号码、被叫号码和编解码标识集合；
    根据所述呼叫请求确定是否采用第一通话类型；
    在确定采用所述第一通话类型的情况下，在所述呼叫请求中插入预定第一标识；
    将所述呼叫请求转发给被叫终端，以便所述被叫终端在确定所述呼叫请求中包括所述预定第一标识的情况下，在所述编解码标识集合中选择预定编解码方式；和
    在所述被叫终端反馈的呼叫响应中插入预定第二标识，并发送给所述主叫终端，以便所述主叫终端根据所述预定第二标识确定采用所述第一通话类型和所述预定编解码方式。
  2. 根据权利要求1所述的通话建立方法，其中，所述根据所述呼叫请求确定是否采用第一通话类型包括：
    所述AS获取所述呼叫请求中的主叫号码和被叫号码；和
    根据所述主叫号码和所述被叫号码，确定所述呼叫请求是否采用第一通话类型。
  3. 根据权利要求1或2所述的通话建立方法，其中，所述第一通话类型包括加密通话。
  4. 根据权利要求1所述的通话建立方法，其中，
    所述AS接收来自主叫终端的呼叫请求包括：
    主叫长期演进语音承载VoLTE网络在收到来自所述主叫终端的呼叫请求的情况下，将所述呼叫请求发送给主叫AS；
    所述主叫AS将所述呼叫请求反馈给所述主叫VoLTE网络；
    所述主叫VoLTE网络将所述呼叫请求转发给被叫VoLTE网络；和
    所述被叫VoLTE网络将所述呼叫请求发送给被叫AS；
    所述根据所述呼叫请求确定是否采用第一通话类型包括：所述被叫AS在收到来自所述被叫VoLTE网络的所述呼叫请求后，根据所述呼叫请求确定是否采用第一通话类型；
    所述在确定采用所述第一通话类型的情况下，在所述呼叫请求中插入预定标识包 括：所述被叫AS在确定采用所述第一通话类型的情况下，在所述呼叫请求中插入预定第一标识。
  5. 根据权利要求4所述的通话建立方法，其中，
    所述根据所述呼叫请求确定是否采用第一通话类型还包括：所述主叫AS在收到来自所述主叫VoLTE网络的所述呼叫请求的情况下，根据所述呼叫请求确定是否采用第一通话类型；
    所述在所述被叫终端反馈的呼叫响应中插入所述预定第二标识包括：
    所述主叫AS在根据来自所述主叫VoLTE网络的所述呼叫请求确定采用所述第一通话类型的情况下，在收到所述被叫终端反馈的呼叫响应后，在所述呼叫响应中插入所述预定第二标识。
  6. 根据权利要求5所述的通话建立方法，其中，所述呼叫响应由所述被叫终端发送给所述被叫VoLTE网络后，按照所述呼叫请求的原路返回给所述主叫AS。
  7. 一种通话建立方法，包括：
    主叫终端向应用服务器AS发送呼叫请求，所述呼叫请求中包括主叫号码、被叫号码和编解码标识集合，其中，所述应用服务器AS在根据所述呼叫请求确定采用第一通话类型的情况下，在所述呼叫请求中插入预定第一标识，以便所述被叫终端在所述编解码标识集合中选择预定编解码方式；和
    所述主叫终端在收到的呼叫响应中包括预定第二标识的情况下，确定与被叫终端采用所述第一通话类型通话，其中，所述应用服务器在确定采用所述第一通话类型的情况下在所述被叫终端反馈的所述呼叫响应中插入预定第二标识。
  8. 根据权利要求7所述的通话建立方法，还包括：
    所述主叫终端接收所述被叫终端反馈的第一响应；
    根据所述第一响应确定编解码方式。
  9. 根据权利要求7所述的通话建立方法，还包括：
    被叫终端接收来自所述AS的呼叫请求；
    在确定所述呼叫请求中包括所述预定第一标识的情况下，在所述编解码标识集合中选择预定编解码方式；和
    反馈第一响应和呼叫响应，其中，所述第一响应中包括所述预定编解码方式的标识。
  10. 一种应用服务器系统，包括：
    请求接收单元，被配置为接收来自主叫终端的呼叫请求，所述呼叫请求中包括主叫号码、被叫号码和编解码标识集合；
    通话类型确定单元，被配置为根据所述呼叫请求确定是否采用第一通话类型；
    第一标识插入单元，被配置为在确定采用所述第一通话类型的情况下，在所述呼叫请求中插入预定第一标识；
    请求转发单元，被配置为将所述呼叫请求转发给被叫终端，以便所述被叫终端在确定所述呼叫请求中包括所述预定第一标识的情况下，在所述编解码标识集合中选择预定编解码方式；和
    第二标识插入单元，被配置为在所述被叫终端反馈的呼叫响应中插入预定第二标识，并发送给所述主叫终端，以便所述主叫终端根据所述预定第二标识确定采用所述预定编解码方式。
  11. 根据权利要求10所述的应用服务器系统，其中，所述应用服务器系统包括主叫应用服务器AS和被叫AS，所述通话类型确定单元包括主叫侧通话类型确定单元和被叫侧通话类型确定单元，
    其中，所述主叫AS包括：
    请求接收单元，被配置为接收来自主叫长期演进语音承载VoLTE网络的呼叫请求，其中所述主叫VoLTE网络在收到来自所述主叫终端的呼叫请求的情况下，将所述呼叫请求发送给主叫AS；将所述呼叫请求反馈给所述主叫VoLTE网络；
    主叫侧通话类型确定单元，被配置为在收到来自所述主叫VoLTE网络的所述呼叫请求的情况下，根据所述呼叫请求确定是否采用第一通话类型；和
    第二标识插入单元，被配置为在所述主叫侧通话类型确定单元确定采用所述第一通话类型的情况下，在收到所述被叫终端反馈的呼叫响应后，在所述呼叫响应中插入所述预定第二标识；
    所述被叫AS包括：
    被叫侧通话类型确定单元，被配置为在收到来自所述被叫VoLTE网络的所述呼叫请求后，根据所述呼叫请求确定是否采用第一通话类型，其中，所述主叫VoLTE网络在收到所述主叫AS的请求接收单元的反馈后，将所述呼叫请求转发给被叫VoLTE网络；
    第一标识插入单元，被配置为在所述被叫侧通话类型确定单元确定采用所述第一通话类型的情况下，在所述呼叫请求中插入预定第一标识；和
    请求转发单元，被配置为将已插入所述预定第一标识的所述呼叫请求转发给被叫终端。
  12. 一种终端，包括：
    呼叫请求单元，被配置为向应用服务器AS发送呼叫请求，所述呼叫请求中包括主叫号码、被叫号码和编解码标识集合，其中，所述AS在根据所述呼叫请求确定采用第一通话类型的情况下，在所述呼叫请求中插入预定第一标识，以便所述被叫终端在所述编解码标识集合中选择预定编解码方式；和
    响应接收单元，被配置为在收到的呼叫响应中包括预定第二标识的情况下，确定与被叫终端采用预定编解码方式通话，其中，所述AS在确定采用所述第一通话类型的情况下，在所述被叫终端反馈的所述呼叫响应中插入预定第二标识。
  13. 根据权利要求12所述的终端，其中，所述响应接收单元还被配置为接收所述被叫终端反馈的第一响应，并根据所述第一响应确定编解码方式。
  14. 根据权利要求13所述的终端，还包括：
    请求接收单元，被配置为接收来自所述AS的呼叫请求；在确定所述呼叫请求中包括所述预定第一标识的情况下，在所述编解码标识集合中选择预定编解码方式；和
    响应单元，被配置为反馈第一响应和呼叫响应，其中，所述第一响应中包括所述预定编解码方式的标识。
  15. 一种通信网络设备，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器的指令执行如权利要求1至9任一项所述的方法。
  16. 一种计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现权利要求1至9任意一项所述的方法的步骤。
  17. 一种通信系统，包括：
    权利要求10或11所述的应用服务器系统；和
    多个终端，每个所述终端为权利要求12～14任意一项所述的终端。
PCT/CN2022/097687 2021-06-09 2022-06-08 通话建立方法、应用服务器系统、终端和通信网络设备及系统 WO2022257988A1 (zh)

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CN1870592A (zh) * 2006-03-30 2006-11-29 华为技术有限公司 一种优选编解码的解决方法
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CN1870592A (zh) * 2006-03-30 2006-11-29 华为技术有限公司 一种优选编解码的解决方法
CN105282734A (zh) * 2014-06-11 2016-01-27 中国移动通信集团公司 一种实现跨网络保密通话的方法、终端、无线网关及系统
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