CN113163400A - Voice communication method, terminal and TF card - Google Patents
Voice communication method, terminal and TF card Download PDFInfo
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- CN113163400A CN113163400A CN202010013783.2A CN202010013783A CN113163400A CN 113163400 A CN113163400 A CN 113163400A CN 202010013783 A CN202010013783 A CN 202010013783A CN 113163400 A CN113163400 A CN 113163400A
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Abstract
The invention provides a voice call method, a terminal and a TF card, and relates to the technical field of mobile communication. The voice call method is applied to a calling terminal and comprises the following steps: determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal; under the condition that a calling terminal dials an encrypted phone, sending a request message to a called terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type; obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal; and carrying out voice communication with the called terminal according to the target coding and decoding type. By the scheme, the encryption communication can be realized by selecting the high-definition voice coding and decoding with better voice quality, the technical advantage of good voice quality of the VoLTE telephone is fully played, and the communication quality is improved.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a voice call method, a terminal and a TF card.
Background
A Voice over Long-Term Evolution (VoLTE) Voice over Long-Term Evolution (Long-Term Evolution) encryption phone is an encryption phone realized by adopting an end-to-end key negotiation mechanism on the basis of a standard VoLTE phone. When a user initiates a VoLTE encrypted Call, a calling encryption terminal sends a Session Initiation Protocol (SIP) request message INVITE to a called encryption terminal to establish the Call, and a Call-Info header field in the INVITE carries an encrypted Call identifier to indicate the Call to the called encryption terminal as an encrypted Call. After the call connection and the key negotiation are completed successfully, the calling party and the called party can start encrypted conversation, the communication baseband chip fixedly uses AMR-NB audio coding and decoding to carry out encrypted voice communication, and the coding rate of the encrypted voice is fixed to be 12.20 kbps. The encryption terminal inputs the media surface data with fixed length into the TF password card for processing, and the TF password card returns to the encryption terminal after completing voice encryption or decryption.
At present, the commercial use of the ordinary VoLTE telephone has been greatly developed, and high-definition voice coding and decoding are generally used. The conventional commercial VoLTE encrypted telephone still fixedly adopts AMR-NB voice coding and decoding, only standard definition voice quality is achieved, and the technical advantage of good voice quality of the VoLTE telephone cannot be fully exerted. Meanwhile, the encryption and decryption rate of the TF cipher card is greatly improved, and the TF cipher card can support voice encryption and decryption at higher rate and cannot play a role.
Disclosure of Invention
The embodiment of the invention provides a voice call method, a terminal and a TF card, and aims to solve the problems that an AMR-NB voice coding and decoding is still fixedly adopted by the existing commercial VoLTE encrypted telephone, only standard definition voice quality is achieved, and the technical advantage of good voice quality of the VoLTE telephone cannot be fully played.
In order to solve the above technical problem, an embodiment of the present invention provides a voice call method, applied to a calling terminal, including:
determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal;
under the condition that a calling terminal dials an encrypted phone, sending a request message to a called terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal;
and carrying out voice communication with the called terminal according to the target coding and decoding type.
Optionally, the determining method of the voice codec type that can be supported by the memory TF card corresponding to the calling terminal includes:
acquiring capability information of the TF card, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate.
Specifically, one encrypted speech coding payload type corresponds to a speech codec for the supported encrypted speech.
Optionally, the performing a voice call with the called terminal according to the target codec type includes:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the calling terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
The embodiment of the invention also provides a voice communication method, which is applied to a called terminal and comprises the following steps:
receiving a request message sent by a calling terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
determining a target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the sequencing relation of the load type;
and sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
Optionally, the determining, according to the encrypted voice coding load type and the sorting relationship between the load types, a target coding/decoding type used by the current encrypted phone includes:
acquiring the capability information of the TF card from the TF card through a capability information query interface of the memory TF card corresponding to the called terminal, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type, the ordering relation of the load types, the capability information and the voice coding and decoding capability of the called terminal.
Optionally, the performing a voice call by using the target codec type includes:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the called terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
The embodiment of the invention also provides a voice communication method, which is applied to the memory TF card and comprises the following steps:
sending the capability information of the TF card to a terminal through a capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
Optionally, after the sending the capability information of the TF card to the terminal, the method further includes:
receiving voice data and a target coding and decoding type sent by a terminal;
according to the target coding and decoding type, carrying out data processing on the voice data by using a call key to obtain encrypted voice data or decrypted voice data;
and sending the encrypted voice data or the decrypted voice data to a terminal.
An embodiment of the present invention further provides a terminal, where the terminal is a calling terminal, and the terminal includes:
the first determining module is used for determining the encrypted voice coding load type and the ordering relation of the load type according to the voice coding and decoding capacity of the calling terminal and the voice coding and decoding type which can be supported by the memory TF card corresponding to the calling terminal;
the first sending module is used for sending a request message to a called terminal under the condition that a calling terminal dials an encrypted phone, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
the first acquisition module is used for acquiring a target coding and decoding type used by the encrypted telephone which is fed back by the called terminal;
and the first communication module is used for carrying out voice communication with the called terminal according to the target coding and decoding type.
The embodiment of the invention also provides a terminal, which is a calling terminal and comprises a transceiver and a processor;
the processor is configured to:
determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal;
under the condition that a calling terminal dials an encrypted phone, a request message is sent to a called terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal;
and carrying out voice communication with the called terminal according to the target coding and decoding type.
The embodiment of the invention also provides a terminal, which is a calling terminal and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a terminal, where the terminal is a called terminal, and the terminal includes:
the first receiving module is used for receiving a request message sent by a calling terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
the second determining module is used for determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the ordering relation of the load types;
and the second communication module is used for sending the target coding and decoding type to the calling terminal and carrying out voice communication by using the target coding and decoding type.
The embodiment of the invention also provides a terminal, which is a called terminal and comprises a transceiver and a processor;
the processor is configured to:
receiving a request message sent by a calling terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sorting relation of the load type;
determining a target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the sequencing relation of the load type;
and sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
The embodiment of the invention also provides a terminal which is a called terminal and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a memory TF card, including:
the second sending module is used for sending the capability information of the TF card to the terminal through the capability information inquiry interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
The embodiment of the invention also provides a memory TF card, which comprises a transceiver and a processor;
the processor is configured to:
sending the capability information of the TF card to a terminal through a capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
The embodiment of the invention also provides a memory TF card, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the voice call method.
The invention has the beneficial effects that:
according to the scheme, the voice call method for dynamically selecting the voice coding and decoding can be used for selecting the high-definition voice coding and decoding with better voice quality to carry out encrypted call, the technical advantage of good voice quality of the VoLTE telephone is fully played, and the call quality is improved.
Drawings
Fig. 1 is a flow chart of a voice call method according to an embodiment of the present invention;
FIG. 2 shows a system architecture diagram of an embodiment of the present invention;
FIG. 3 is a flow chart illustrating a detailed implementation of an embodiment of the present invention;
FIG. 4 is a second flowchart illustrating a voice call method according to an embodiment of the present invention;
fig. 5 is a third schematic flow chart illustrating a voice call method according to an embodiment of the present invention;
fig. 6 shows a block diagram of a calling terminal according to an embodiment of the present invention;
fig. 7 is a schematic block diagram of a called terminal according to an embodiment of the present invention;
fig. 8 is a block diagram of a TF card according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a voice communication method, a terminal and a TF card, aiming at the problems that the conventional commercial VoLTE encrypted telephone still fixedly adopts AMR-NB voice coding and decoding, only standard definition voice quality is achieved, and the technical advantage of good voice quality of the VoLTE telephone cannot be fully played.
As shown in fig. 1, the voice call method according to the embodiment of the present invention is applied to a calling terminal, and includes:
it should be noted that, the voice codec capability of the calling terminal mentioned in the embodiment of the present invention refers to a voice codec type that can be supported by the calling terminal, and mainly includes: AMR/8000, AMR-WB/16000, EVS/16000, AMR-NB, etc.
It should be further noted that AMR (Adaptive Multi-rate), i.e. Adaptive Multi-rate speech coder, is mainly used for audio of mobile devices, and is divided into two types, one is AMR-NB (AMR-narrowband), and the speech bandwidth range: 300 + 3700Hz, 8KHz sampling frequency; the other is AMR-WB (AMR WideBand), the voice bandwidth range is 50-7000 Hz, and the sampling frequency is 16 KHz.
it should be noted that the request message carries the encrypted speech coding load type and the ordering relationship of the load types;
it should be noted that, after the calling terminal sends the request message to the called terminal, the called terminal determines the target codec type used by the current encrypted phone according to the encrypted voice coding load type and the sorting relationship of the load types, and feeds back the target codec type to the calling terminal, and in the subsequent call process, both the calling terminal and the called terminal use the target codec type to realize the codec of the voice data.
And step 14, carrying out voice communication with the called terminal according to the target coding and decoding type.
It should be noted that the voice call method is mainly applied to the VoLTE encrypted telephone system. According to the scheme, the coding and decoding types used by the call are negotiated by the calling terminal and the called terminal, so that the technical advantage of good voice quality of the VoLTE telephone can be fully played, and the call quality is improved.
It should be further noted that, in the above-mentioned encrypted voice coding load types, each encrypted voice coding load type corresponds to a voice codec of the supported encrypted voice, that is, each encrypted voice coding load type corresponds to a voice codec of the supported encrypted voice.
Further, the determining method of the voice codec type that can be supported by the TF card corresponding to the calling terminal provided in the embodiment of the present invention is as follows:
acquiring capability information of a TF card, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate.
Further, after the target coding and decoding type is obtained, according to the target coding and decoding type, a specific implementation manner of performing voice call with the called terminal is as follows:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the calling terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
It should be noted that, when the calling terminal needs to send voice data, the calling terminal sends the voice data to be sent and the target coding and decoding type to the TF card corresponding to the calling terminal, the TF card performs data processing (i.e. encryption processing) on the voice data by using the session key according to the target coding and decoding type to obtain encrypted voice data, and then the TF card sends the encrypted voice data to the calling terminal, and then the calling terminal sends the encrypted voice data to the called terminal; when the calling terminal needs to play the voice data, the calling terminal sends the received voice data and the target coding and decoding type together to a TF card corresponding to the calling terminal, the TF card performs data processing (namely decryption processing) on the voice data by using a call key according to the target coding and decoding type to obtain decrypted voice data, then the TF card sends the decrypted voice data to the calling terminal, and the calling terminal directly plays the decrypted voice data. Similarly, the called terminal side also executes the corresponding process until the voice call between the two is finished.
The following describes in detail a specific implementation process of an embodiment of the present invention in practical application.
The VoLTE encrypted telephony system architecture is shown in fig. 2, and mainly includes VoLTE encrypted terminals (i.e., the above mentioned terminals, including a calling terminal and a called terminal), a mobile 4G and IP Multimedia System (IMS) network, a key management platform, and the like, where a dotted line is a signaling plane flow, and a dash-dot line is a media plane flow.
1. VoLTE encryption terminal
A VoLTE encryption terminal is an encryption terminal for short, and on the basis of a standard VoLTE terminal, a communication baseband chip is customized and modified to support the interface and calling of a TF card, so that the VoLTE encryption voice telephone function is realized. In the embodiment of the invention, the processing logic of a Session Initiation Protocol (SIP) and a Session Description Protocol (SDP) is added to the encryption terminal, so that the encryption terminal can dynamically select the voice coding and decoding of the encrypted phone, thereby supporting the high-definition voice encryption phone.
When initiating an encrypted call, the calling encryption terminal sends a request (INVITE) message to the called encryption terminal. On the basis that the original INVITE message carries an encrypted Call identifier in a Call-Info header field, the embodiment of the invention provides that an m field of an SDP-offer message in the INVITE contains an encrypted voice coding load type value corresponding to different supported voice codecs of encrypted voice.
The difference between the SDP protocol processing added to the VoLTE encrypted terminal and the SDP protocol processing of the general VoLTE terminal is that the voice coding load type values 112, 114, 116 of VoLTE encrypted voice are prioritized and respectively correspond to the voice codec AMR/8000, AMR-WB/16000, EVS/16000, as shown in table 1. The called encryption terminal determines whether the load type values 112, 114, 116 in the received SDP protocol are corresponding to the encryption telephone voice codec, and can determine by combining the encrypted Call identifier carried in the Call-Info header field.
TABLE 1 load type value and speech codec corresponding relationship table
| Value of load type | Speech coding and decoding |
| 112 | AMR/8000 |
| 114 | AMR-WB/16000 |
| 116 | EVS/16000 |
In the SDP-offer message of INVITE, the ordering of the encrypted voice codec load type values is determined according to the encrypted telephone voice codec capabilities of the encrypted terminal and its priority order.
For example, in the case of preferentially selecting high-definition speech AMR-WB speech coding, the SDP-offer message format of INVITE initiated by the calling encryption terminal is as follows:
m ═ audio < Port > RTP/AVP 114116112 < other load type value >
a＝rtpmap:114AMR-WB/16000
a＝rtpmap:116EVS/16000
a＝rtpmap:112AMR/8000
After receiving the INVITE message of the calling encryption terminal, the called encryption terminal recognizes the Call as an encrypted phone according to the encrypted Call identifier carried by the Call-Info header, acquires the encrypted voice encoding and decoding capability and the priority sequence of the encrypted voice encoding and decoding capability according to the load type value of the encrypted voice encoding and decoding carried by the SDP-offer in the calling INVITE message, determines the voice encoding and decoding used by the encrypted Call by combining the voice encoding and decoding capability of the terminal encrypted phone, and returns an SDP-answer message to the calling.
For example, if it is determined that the current encrypted call uses the high-definition speech AMR-WB speech codec, the m field of the SDP-answer message carries the following load type value, and the a line uses the following speech codec and is arranged in priority to the other a lines:
m ═ audio < port > RTP/AVP 114< other load type values >
a＝rtpmap:114AMR-WB/16000
Based on the mechanism, the calling and called encryption terminals can flexibly select proper voice coding and decoding to carry out encryption communication, but the two parties do not fixedly adopt standard definition voice AMR-NB voice coding and decoding to carry out encryption voice communication.
2. TF card (also named TF password card)
The TF card is placed in the encryption terminal to realize the functions of cryptographic algorithm operation, key generation, key storage, certificate storage and the like; and providing a voice encryption interface and a voice decryption interface for the encryption terminal. The embodiment of the invention provides the TF card processing logic and interface, so that the encryption terminal can select proper voice codes to carry out VoLTE encryption communication.
The difference between the VoLTE encryption terminal and the ordinary VoLTE terminal is that a TF card is needed to encrypt and decrypt voice, and the voice coding and decoding type is selected to consider whether the voice encryption and decryption rate of the TF card can meet the rate requirement of high-definition voice coding and decoding besides the voice coding and decoding capability of the terminal. And a TF card capability information query interface is added, the encryption terminal actively acquires the capability information of the TF card by calling the TF card capability information query interface, and the capability information comprises the service types supported by the TF card and the encryption and decryption processing rate of each service.
The communication baseband chip of the encryption terminal should support recording and storing the capability information of the current TF card, and the encryption terminal determines the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate supported by the TF card. The calling encryption terminal comprehensively considers the voice coding and decoding capability of the calling encryption terminal and the voice coding and decoding type supported by the TF card, determines the selected voice coding and decoding capability and determines the priority, and encapsulates the INVITE message and sends the INVITE message to the called encryption terminal as described above; the called encryption terminal needs to obtain the capability information of the TF card by calling the 'capability information query' interface of the TF card of the terminal, confirm the voice coding and decoding type and the encryption and decryption processing rate which can be supported by the TF card, finally determine the voice coding and decoding mode adopted by the call, package the response containing the SDP-answer message and send the response to the opposite terminal, and the subsequent two parties finish the processing of the relevant flow of the encrypted call except the voice coding and decoding capability of the encrypted telephone of the terminal and the voice coding and decoding capability of the calling encryption terminal.
It should be noted that, since the finally determined speech encoding mode may be high definition speech or standard definition speech, when the encryption terminal determines the speech encoding and decoding mode and calls the speech encryption interface and the speech decryption interface of the TF card, it needs to add an "encoding and decoding type" parameter, and transmit the determined encoding and decoding type and the speech data to the TF card together.
The coding and decoding type is transmitted to the TF card, and the TF card can accurately calculate the data which needs to be encrypted and decrypted actually under the condition of dynamically selecting the voice coding and decoding. The input and output data of the TF card take bytes as a unit, if the input data is less than 1 byte, the encryption terminal needs to fill 0 at the tail end and then send the data to the TF card; for data output by the TF card, the encryption terminal needs to delete the data that is excessive after the tail is filled. For example, in the standard definition speech AMR-NB speech codec mode, the length of the speech data to be encrypted is 244 bits, which is 30.5 bytes in total. When sending TF card to do encryption process, the encryption terminal fills 0 at the end of voice data to be 31 bytes and then sends the voice data to TF card. After encryption processing, the encryption terminal discards the 4 bits with complete tail in the 31-byte data returned by the TF card, and then encapsulates and sends the data. Under the AMR-WB voice coding and decoding mode of high-definition voice, the length of voice data to be encrypted is 477 bits, and when the voice data is sent to the TF card for encryption processing, the encryption terminal fills 0 at the tail of the voice data into 60 bytes and then sends the voice data to the TF card. After encryption processing, the encryption terminal discards the 3 bits with complete tail in the 60-byte data returned by the TF card, and then encapsulates and sends the data. And transmitting the coding and decoding type to the TF card, wherein the TF card can calculate the data to be encrypted and decrypted and the supplemented data in the data transmitted to the TF card to finish data encryption and decryption processing.
3. Public mobile 4G and IMS networks
When encrypted communication is carried out between VoLTE encrypted terminals, the communication signaling and voice connection are finished by the public mobile 4G and the IMS network as the common VoLTE terminal.
4. Key management platform
The key management platform completes the management of the key, including the generation, storage, distribution and update of the key; the method realizes offline key injection to the TF card and realizes online management to the TF card through the Internet.
As shown in fig. 3, the specific implementation flow of the embodiment of the present invention is as follows:
step 301, after a calling encryption terminal (i.e. the above mentioned calling terminal) is powered on, calling a 'capability information query' interface of a TF card, and sending a capability information query request to the TF card;
step 302, the calling encryption terminal acquires the capability information fed back by the TF card;
it should be noted that the capability of the TF card includes supporting high-definition voice AMR-WB, the encryption and decryption rate is 40kbps and is greater than the rate of 23.85kbps of the high-definition voice AMR-WB, and the performance requirement of encrypting and decrypting the high-definition voice AMR-WB can be met.
Step 303, after the called encryption terminal (i.e. the called terminal mentioned above) is powered on, calling a capability information query interface of the TF card, and sending a capability information query request to the TF card;
304, the called encryption terminal acquires the feedback capability information of the TF card;
it should be noted that the capability of the TF card includes supporting high-definition voice AMR-WB, the encryption and decryption rate is 40kbps and is greater than the rate of 23.85kbps of the high-definition voice AMR-WB, and the performance requirement of encrypting and decrypting the high-definition voice AMR-WB can be met.
It should be noted that, the steps 301-302 and 303-304 have no specific order relationship, and they may be executed in parallel.
305, the calling encryption terminal dials a VoLTE encryption phone to the called encryption terminal, and sends an INVITE message to the called encryption terminal through a 4G and IMS network;
it should be noted that the calling encryption terminal can support high-definition voice AMR-WB itself, and also comprehensively considers that the TF card can support high-definition voice AMR-WB, and the SDP-offer message format of INVITE initiated by the calling encryption terminal is as follows:
m ═ audio < Port > RTP/AVP 114112116 < other load type value >
a＝rtpmap:114AMR-WB/16000
a＝rtpmap:112AMR/8000
a＝rtpmap:116EVS/16000
Step 306, the called encryption terminal feeds back a response message to the calling encryption terminal, wherein the response message carries the coding and decoding type used by the call;
when the called encryption terminal receives the INVITE message of the calling encryption terminal, the calling encryption terminal knows that the calling is an encrypted telephone, and after the SDP-offer message in the calling encryption terminal is analyzed, the calling encryption terminal is known to preferentially select a high-definition voice AMR-WB coding and decoding mode; the called encryption terminal can support high-definition voice AMR-WB, and also comprehensively considers that the TF card can support high-definition voice AMR-WB, and the SDP-offer message format of the response message returned by the called encryption terminal is as follows:
m ═ audio < port > RTP/AVP 114< other load type values >
a＝rtpmap:114AMR-WB/16000
307, the calling encryption terminal and the called encryption terminal complete subsequent signaling interaction and establish a call;
308, TF cards corresponding to the calling encryption terminal and the called encryption terminal are respectively clamped in-band channels established by the calling encryption terminal and the called encryption terminal to complete key agreement, and the two parties establish encryption communication;
step 309, in the process of encrypting the call, the calling encryption terminal transmits the user voice plaintext and the coding and decoding types to the TF card;
step 310, the TF card knows that the user voice plaintext is AMR-WB voice encoding and decoding, and encrypts the effective load of the user voice plaintext by using the negotiated call key;
step 311, the TF card returns the encrypted voice ciphertext to the calling encryption terminal;
step 312, the calling encryption terminal sends the voice ciphertext to the called encryption terminal through the mobile 4G and IMS network;
it should be noted that, after the calling encryption terminal obtains the data after encryption processing, first discard the 3 bits filled at the end in the data returned by the TF card, then encapsulate and send to the mobile 4G and IMS network, and then send the voice ciphertext to the called encryption terminal by the mobile 4G and IMS network.
313, after receiving the voice ciphertext, the called encryption terminal sends a decryption request to the TF card;
it should be noted that the decryption request carries a voice ciphertext and an encoding/decoding type; before sending the voice ciphertext to the TF card, the called encryption terminal needs to complement the user voice ciphertext, and then transmits the user voice ciphertext and the coding and decoding type parameters to the TF card;
step 314, the TF card decrypts the user voice ciphertext;
it should be noted that the TF card knows that the data is AMR-WB speech codec, and decrypts the payload of the speech data using the negotiated session key;
step 315, sending the decrypted voice plaintext to the called encryption terminal;
it should be noted that, the called encryption terminal discards the 3 bits at the end of the data (i.e. the voice plaintext) returned by the TF card, and plays the data to the user.
It should be noted that the above is called to receive the calling voice, and vice versa. This flow is executed multiple times until the call is over.
It should be noted that the embodiment of the present invention provides a voice call method capable of dynamically selecting voice codec, which adds SIP and SDP protocol processing logic to an encryption terminal, and adds processing logic and interface parameters to a TF card, so that the encryption terminal can dynamically select encrypted phone voice codec, thereby fully exerting the technical advantage of good voice quality of VoLTE phone, and improving the call quality.
As shown in fig. 4, an embodiment of the present invention further provides a voice call method, applied to a called terminal, including:
and 43, sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
Optionally, the determining, according to the encrypted voice coding load type and the sorting relationship between the load types, a target coding/decoding type used by the current encrypted phone includes:
acquiring the capability information of the TF card from the TF card through a capability information query interface of the memory TF card corresponding to the called terminal, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type, the ordering relation of the load types, the capability information and the voice coding and decoding capability of the called terminal.
Optionally, the performing a voice call by using the target codec type includes:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the called terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
It should be noted that all the descriptions regarding the called terminal in the above embodiments are applicable to the embodiment of the voice call method, and the same technical effects can be achieved.
As shown in fig. 5, an embodiment of the present invention further provides a voice communication method applied to a memory TF card, including:
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
Optionally, after the sending the capability information of the TF card to the terminal, the method further includes:
receiving voice data and a target coding and decoding type sent by a terminal;
according to the target coding and decoding type, carrying out data processing on the voice data by using a call key to obtain encrypted voice data or decrypted voice data;
and sending the encrypted voice data or the decrypted voice data to a terminal.
It should be noted that all the descriptions regarding the TF card in the above embodiments are applicable to the embodiment of the voice call method, and the same technical effects can be achieved.
As shown in fig. 6, an embodiment of the present invention provides a terminal, where the terminal is a calling terminal 60, and includes:
a first determining module 61, configured to determine an encrypted voice coding load type and a sorting relationship of the load types according to a voice coding and decoding capability of a calling terminal and a voice coding and decoding type that can be supported by a memory TF card corresponding to the calling terminal;
a first sending module 62, configured to send a request message to a called terminal when a calling terminal dials an encrypted phone call, where the request message carries an encrypted voice coding load type and a sorting relationship of the load types;
a first obtaining module 63, configured to obtain a target coding and decoding type used by the encrypted phone this time, which is fed back by the called terminal;
and the first call module 64 is configured to perform a voice call with the called terminal according to the target coding and decoding type.
Optionally, the determining method of the voice codec type that can be supported by the memory TF card corresponding to the calling terminal includes:
acquiring capability information of the TF card, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate.
Specifically, one encrypted speech coding payload type corresponds to a speech codec for the supported encrypted speech.
Optionally, the first call module 64 includes:
the first sending unit is used for sending the voice data and the target coding and decoding type to the TF card corresponding to the calling terminal when the voice data is obtained;
and the first receiving unit is used for receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
It should be noted that, the apparatus provided in the embodiment of the present invention is an apparatus capable of executing the voice call method, and all implementation manners in the embodiment of the voice call method are applicable to the apparatus and can achieve the same or similar beneficial effects.
The embodiment of the invention also provides a terminal, which is a calling terminal and comprises a transceiver and a processor;
the processor is configured to:
determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal;
under the condition that a calling terminal dials an encrypted phone, a request message is sent to a called terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal;
and carrying out voice communication with the called terminal according to the target coding and decoding type.
Optionally, the processor determines a type of voice codec that can be supported by a memory TF card corresponding to the calling terminal, and is configured to:
acquiring capability information of the TF card, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate.
Specifically, one encrypted speech coding payload type corresponds to a speech codec for the supported encrypted speech.
Optionally, the processor performs a voice call with the called terminal according to the target codec type, so as to implement:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the calling terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
The embodiment of the invention also provides a terminal, which is a calling terminal and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the above-mentioned processes applied to the voice call method embodiment on the calling terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 7, an embodiment of the present invention further provides a terminal, where the terminal is a called terminal 70, and the terminal includes:
a first receiving module 71, configured to receive a request message sent by a calling terminal, where the request message carries an encrypted speech coding load type and a sorting relationship of the load types;
a second determining module 72, configured to determine, according to the encrypted voice coding load type and the ordering relationship between the load types, a target coding and decoding type used by the current encrypted phone;
and the second communication module 73 is configured to send the target codec type to the calling terminal, and perform voice communication using the target codec type.
Optionally, the second determining module 72 includes:
an obtaining unit, configured to obtain capability information of a TF card from the TF card through a capability information query interface of the memory TF card corresponding to the called terminal, where the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and the determining unit is used for determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type, the ordering relation of the load types, the capability information and the voice coding and decoding capability of the called terminal.
Optionally, the second communication module 73 includes:
the second sending unit is used for sending the voice data and the target coding and decoding type to the TF card corresponding to the called terminal when the voice data is obtained;
and the second receiving unit is used for receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
It should be noted that, the apparatus provided in the embodiment of the present invention is an apparatus capable of executing the voice call method, and all implementation manners in the embodiment of the voice call method are applicable to the apparatus and can achieve the same or similar beneficial effects.
The embodiment of the invention also provides a terminal, which is a called terminal and comprises a transceiver and a processor;
the processor is configured to:
receiving a request message sent by a calling terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sorting relation of the load type;
determining a target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the sequencing relation of the load type;
and sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
Optionally, the processor is configured to implement, when determining the target codec type used by the current encrypted phone according to the encrypted voice coding load type and the ordering relationship between the load types, that:
acquiring the capability information of the TF card from the TF card through a capability information query interface of the memory TF card corresponding to the called terminal, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type, the ordering relation of the load types, the capability information and the voice coding and decoding capability of the called terminal.
Optionally, when the processor executes a voice call by using the target codec type, the processor is configured to:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the called terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
The embodiment of the invention also provides a terminal which is a called terminal and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the above-mentioned processes in the embodiment of the voice call method applied to the called terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 8, an embodiment of the invention further provides a memory TF card 80, which includes:
a second sending module 81, configured to send capability information of the TF card to the terminal through the capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
Optionally, after the second sending module 81 sends the capability information of the TF card to the terminal, the method further includes:
the second receiving module is used for receiving the voice data and the target coding and decoding type sent by the terminal;
the processing module is used for carrying out data processing on the voice data by using a call key according to the target coding and decoding type to obtain encrypted voice data or decrypted voice data;
and the third sending module is used for sending the encrypted voice data or the decrypted voice data to the terminal.
The embodiment of the invention also provides a memory TF card, which comprises a transceiver and a processor;
the processor is configured to:
sending the capability information of the TF card to a terminal through a capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
Optionally, after the processor performs sending the capability information of the TF card to the terminal, the processor is further configured to:
receiving voice data and a target coding and decoding type sent by a terminal;
according to the target coding and decoding type, carrying out data processing on the voice data by using a call key to obtain encrypted voice data or decrypted voice data;
and sending the encrypted voice data or the decrypted voice data to a terminal.
The embodiment of the invention also provides a memory TF card, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor realizes the voice communication method when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the above processes applied to the voice call method embodiment on the TF card side, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (19)
1. A voice call method is applied to a calling terminal, and is characterized by comprising the following steps:
determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal;
under the condition that a calling terminal dials an encrypted phone, sending a request message to a called terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal;
and carrying out voice communication with the called terminal according to the target coding and decoding type.
2. The voice communication method according to claim 1, wherein the determining method of the voice codec type that can be supported by the memory TF card corresponding to the calling terminal comprises:
acquiring capability information of the TF card, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the voice coding and decoding type which can be supported by the TF card according to the encryption and decryption processing rate.
3. The method of claim 1, wherein an encrypted voice code payload type corresponds to a supported voice codec for encrypted voice.
4. The voice call method according to claim 1, wherein the performing a voice call with the called terminal according to the target codec type includes:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the calling terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
5. A voice communication method is applied to a called terminal and is characterized by comprising the following steps:
receiving a request message sent by a calling terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
determining a target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the sequencing relation of the load type;
and sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
6. The voice communication method according to claim 5, wherein the determining the target codec type used by the current encrypted phone according to the encrypted voice coding load type and the sorting relationship of the load types comprises:
acquiring the capability information of the TF card from the TF card through a capability information query interface of the memory TF card corresponding to the called terminal, wherein the capability information comprises: the service types supported by the TF card and the encryption and decryption processing rate of each service;
and determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type, the ordering relation of the load types, the capability information and the voice coding and decoding capability of the called terminal.
7. The voice call method according to claim 5, wherein said performing voice call using the target codec type comprises:
when voice data are acquired, the voice data and the target coding and decoding type are sent to a TF card corresponding to the called terminal;
and receiving the encrypted voice data or the decrypted voice data fed back by the TF card.
8. A voice communication method is applied to a memory TF card and is characterized by comprising the following steps:
sending the capability information of the TF card to a terminal through a capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
9. The voice call method according to claim 8, further comprising, after said transmitting the capability information of the TF card to the terminal:
receiving voice data and a target coding and decoding type sent by a terminal;
according to the target coding and decoding type, carrying out data processing on the voice data by using a call key to obtain encrypted voice data or decrypted voice data;
and sending the encrypted voice data or the decrypted voice data to a terminal.
10. A terminal, the terminal being a calling terminal, comprising:
the first determining module is used for determining the encrypted voice coding load type and the ordering relation of the load type according to the voice coding and decoding capacity of the calling terminal and the voice coding and decoding type which can be supported by the memory TF card corresponding to the calling terminal;
the first sending module is used for sending a request message to a called terminal under the condition that a calling terminal dials an encrypted phone, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
the first acquisition module is used for acquiring a target coding and decoding type used by the encrypted telephone which is fed back by the called terminal;
and the first communication module is used for carrying out voice communication with the called terminal according to the target coding and decoding type.
11. A terminal, the terminal is a calling terminal, and is characterized by comprising a transceiver and a processor;
the processor is configured to:
determining an encrypted voice coding load type and a sequencing relation of the load type according to the voice coding and decoding capability of a calling terminal and the voice coding and decoding type which can be supported by a memory TF card corresponding to the calling terminal;
under the condition that a calling terminal dials an encrypted phone, a request message is sent to a called terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
obtaining a target coding and decoding type used by the encrypted telephone fed back by a called terminal;
and carrying out voice communication with the called terminal according to the target coding and decoding type.
12. A terminal, the terminal being a calling terminal and comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the voice call method according to any one of claims 1 to 4 when executing the program.
13. A terminal, which is a called terminal, comprising:
the first receiving module is used for receiving a request message sent by a calling terminal, wherein the request message carries an encrypted voice coding load type and a sequencing relation of the load type;
the second determining module is used for determining the target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the ordering relation of the load types;
and the second communication module is used for sending the target coding and decoding type to the calling terminal and carrying out voice communication by using the target coding and decoding type.
14. A terminal, the terminal is a called terminal, and is characterized by comprising a transceiver and a processor;
the processor is configured to:
receiving a request message sent by a calling terminal through a transceiver, wherein the request message carries an encrypted voice coding load type and a sorting relation of the load type;
determining a target coding and decoding type used by the encrypted telephone according to the encrypted voice coding load type and the sequencing relation of the load type;
and sending the target coding and decoding type to a calling terminal, and carrying out voice call by using the target coding and decoding type.
15. A terminal, the terminal being a called terminal and comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor when executing the program implements a voice call method as claimed in any one of claims 5 to 7.
16. A memory TF card, comprising:
the second sending module is used for sending the capability information of the TF card to the terminal through the capability information inquiry interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
17. A memory TF card comprising a transceiver and a processor;
the processor is configured to:
sending the capability information of the TF card to a terminal through a capability information query interface of the TF card;
the terminal is a calling terminal or a called terminal; the capability information includes: the service types supported by the TF card and the encryption and decryption processing rate of each service.
18. A memory TF card comprising a memory, a processor and a computer program stored on said memory and executable on said processor, characterized in that said processor implements the voice call method according to claim 8 or 9 when executing said program.
19. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the voice call method according to any one of claims 1 to 9.
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| CN202010013783.2A CN113163400A (en) | 2020-01-07 | 2020-01-07 | Voice communication method, terminal and TF card |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010013783.2A CN113163400A (en) | 2020-01-07 | 2020-01-07 | Voice communication method, terminal and TF card |
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Application publication date: 20210723 |