WO2020233107A1

WO2020233107A1 - Voice guarantee method and apparatus, and access network device cluster system

Info

Publication number: WO2020233107A1
Application number: PCT/CN2019/124701
Authority: WO
Inventors: 郑自永
Original assignee: 京信通信系统（中国）有限公司
Priority date: 2019-05-17
Filing date: 2019-12-11
Publication date: 2020-11-26
Also published as: CN110177341A

Abstract

The present application relates to a voice guarantee method and apparatus and an access network device cluster system; the voice guarantee method comprises the following steps: receiving a voice encoding data packet transmitted by a calling device, and performing tunnel information group removal on the voice encoding data packet to obtain a first intermediate message on a called side, the voice encoding data packet being obtained by a voice message sequentially undergoing FEC encoding, message group information addition and tunnel information group addition by the calling device; reading and removing the message group information in the first intermediate message on the called side to obtain a second intermediate message on the called side; and according to the message group information, performing FEC decoding on the second intermediate message on the called side to obtain the voice message. The present application may provide a relatively reliable guarantee for the transmission of voice messages between access network devices without compromising the instantaneity of voice calls. The quality of voice transmission is thus improved, while the rate of packet loss is reduced.

Description

Voice guarantee method, device and access network equipment cluster system

Technical field

This application relates to the field of mobile communication technology, in particular to a voice guarantee method, device and access network equipment cluster system.

Background technique

At present, in LTE (Long Term Evolution) mobile communications, the LTE base station access network is usually integrated with the traditional fixed-line broadband network for data transmission, especially for LTE integrated micro-stations and the quality of the access network transmission In the case of unevenness and high transmission load pressure on the access network, the service quality of the base station has also deteriorated sharply, causing problems such as substandard speed and poor call quality. In particular, the poor quality of Volte (Voice over Long-Term Evolution) calls often suffer from customer complaints, resulting in poor base station operation and maintenance indicators, which in turn brings significant losses to operators.

During the implementation process, the inventor found that the traditional technology has at least the following problems: In the traditional LTE transmission system, the access network transmission quality is poor, resulting in packet loss and poor voice transmission quality.

Summary of the invention

Based on this, it is necessary to provide a voice guarantee method, device, and access network equipment cluster system for the problems of poor transmission quality of the access network in the traditional LTE transmission system, resulting in packet loss and poor voice transmission quality.

In order to achieve the foregoing objectives, in the first aspect, an embodiment of the present application provides a voice guarantee method, which includes the following steps:

Receive the voice coded data packet transmitted by the calling device, and remove the tunnel information group of the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is sequentially FEC encoded by the voice message through the calling device, Obtained after adding message group information and adding tunnel information group processing;

Read and remove the message group information in the first intermediate message on the called side to obtain the second intermediate message on the called side;

According to the message group information, perform FEC decoding processing on the second intermediate message on the called side to obtain a voice message.

In the second aspect, an embodiment of the present application also provides a voice guarantee method, including the following steps:

FEC encoding, adding message group information, and adding tunnel information group processing are sequentially performed on the obtained voice message to obtain a voice coded data packet;

The voice coded data packet is transmitted to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, and report the first intermediate message to the called side. The message reads and removes the message group information to obtain the second intermediate message of the called side, and also performs FEC decoding processing on the second intermediate message of the called side according to the message group information to obtain the voice message.

In the third aspect, an embodiment of the present application also provides a voice guarantee device, including:

The tunnel information group removal unit of the called device is used to receive the voice coded data packet transmitted by the calling device, and to remove the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is composed of voice The message is obtained after the calling device performs FEC encoding, adding message group information, and adding tunnel information group in sequence;

The message group information removal unit of the called device is used to read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side;

The called device decoding processing unit is configured to perform FEC decoding processing on the second intermediate message on the called side according to the message group information to obtain a voice message.

In a fourth aspect, an embodiment of the present application also provides a voice guarantee device, including:

The calling device encoding processing unit is configured to sequentially perform FEC encoding, adding message group information, and adding tunnel information group processing on the acquired voice messages to obtain voice encoded data packets;

The calling device data transmission unit is used to transmit the voice coded data packet to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, And read and remove the message group information of the first intermediate message of the called side to obtain the second intermediate message of the called side, and perform FEC decoding on the second intermediate message of the called side according to the message group information Process to get the voice message.

In a fifth aspect, an embodiment of the present application also provides an access network device cluster system, including a calling device and a called device connected to the calling device;

The called device is used to execute the voice guarantee method, including the following steps:

The calling device is used to execute the voice guarantee method, including the following steps:

The voice coded data packet is transmitted to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, and report to the called side The message reads and removes the message group information to obtain the second intermediate message of the called side, and also performs FEC decoding processing on the second intermediate message of the called side according to the message group information to obtain the voice message.

In a sixth aspect, an embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the voice protection described in any one of the first aspect and the second aspect is implemented. Method steps.

One of the above technical solutions has the following advantages and beneficial effects:

The called device can remove the tunnel information group of the voice coded data packet transmitted by the calling device to obtain the first intermediate message of the called side; and can read and remove the message group information in the first intermediate message of the called side , To obtain the second intermediate message of the called side; according to the message group information, perform FEC (Forward Error Correction, forward error correction code) decoding processing on the second intermediate message of the called side to obtain the voice message, and then pass the FEC During the decoding process, the lost messages can be recovered to a certain extent. Among them, the voice encoding data packet can be obtained by sequentially performing FEC encoding, adding message group information, and adding tunnel information group processing on the voice message by the calling device, so as to improve users in the access network with poor transmission quality on the network side. The call quality of the terminal. This application can provide a relatively reliable guarantee for the transmission of voice messages between the called device and the calling device when the voice message of the user terminal is transmitted between the called device and the calling device, without compromising the real-time voice call Sex. This improves the voice transmission quality and reduces the packet loss rate.

Description of the drawings

Fig. 1 is a schematic diagram of an application environment of a voice guarantee method in an embodiment;

FIG. 2 is a schematic diagram of the first process of a voice guarantee method on the called device side in an embodiment;

FIG. 3 is a schematic diagram of the second process of the voice guarantee method on the called device side in an embodiment;

4 is a schematic diagram of the third process of the voice guarantee method on the called device side in an embodiment;

FIG. 5 is a schematic diagram of the first process of a voice guarantee method on the calling device side in an embodiment;

FIG. 6 is a schematic diagram of the second process of the voice guarantee method on the calling device side in an embodiment;

FIG. 7 is a schematic diagram of the third process of the voice guarantee method on the calling device side in an embodiment;

FIG. 8 is a block diagram of a voice guarantee device on the side of a called device in an embodiment;

Figure 9 is a schematic block diagram of a voice guarantee apparatus on the calling device side in an embodiment;

Fig. 10 is a schematic structural diagram of an access network equipment cluster system in an embodiment.

Detailed ways

In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The preferred embodiment of the application is shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the description of the application herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

In the traditional LTE transmission system, the poor quality of the access network leads to packet loss and poor voice quality. Usually, it can only rely on the error correction mechanism of the user terminal. However, most Volte user terminals do not have FEC error correction capabilities, and their transmission quality The advantages and disadvantages depend on the LTE transmission system, and the packet loss of the access network leads to poor voice quality. The traditional FEC-based base station guarantee system needs to rely on gateway support, which increases the cost of voice transmission.

In the voice guarantee method provided by this application, FEC encoding and decoding can be performed on Volte voice messages, and at the same time, the RTP extension field is used to add message group information. The transmission of data packets and redundant packets through the FEC encoding process improves the transmission guarantee of the message in the access network, and the FEC decoding process attempts to recover the lost message to a certain extent, so as to realize the connection between the calling access network equipment and the receiver. It is called a layer of Volte voice transmission guarantee between the access network equipment, and then in the access network with poor transmission quality on the network side, the call quality of the user terminal is improved; this application can also save the cost of artificially increasing the transmission bandwidth , Make full use of bandwidth.

The voice guarantee method provided in this application can be applied to the application environment as shown in FIG. 1. Among them, the called device 102 communicates with the calling device 104 through the core network; the called user terminal 106 is connected to the called device 102, and the calling user terminal 108 is connected to the calling device 104. Among them, the called device 102 may be implemented by an independent base station or a base station cluster composed of multiple base stations, and the calling device 104 may be implemented by an independent base station or a base station cluster composed of multiple base stations.

In one embodiment, as shown in FIG. 2, a voice guarantee method on the calling device side is provided. Taking the method applied to the called device 102 in FIG. 1 as an example for description, the method includes the following steps:

Step S210: Receive the voice coded data packet transmitted by the calling device, and remove the tunnel information group of the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is sequentially processed by the voice message through the calling device It is obtained after processing FEC encoding, adding message group information, and adding tunnel information group.

The voice message may be message data generated by the user through the user terminal, the user terminal may be a Volte user terminal, and the voice message generated by the corresponding user terminal may be a Volte voice message. The voice coding data packet may include voice data packets and redundant packets. FEC coding refers to the coding method by adding redundant error correction codes to the transmission code sequence. The tunnel information group may include multiple types of tunnel information; the message group information refers to information related to FEC encoding and decoding. The first intermediate message on the called side refers to a message obtained by the called device performing tunnel information group removal processing on the voice coded data packet. It should be noted that the called device may be an access network device on the called side; the host device may be an access network device on the calling side; and the FEC encoding may be an FEC encoding based on RTP.

Specifically, the called device can receive the voice coded data packet transmitted by the calling device, and the voice coded data packet is torn down the tunnel information group to obtain the first intermediate message of the called side; for example, the called device performs the voice coded data packet The tunnel information is removed for the voice data packet in the voice data packet, and the tunnel information is removed for the redundant packet in the voice coded data packet, and then the first intermediate message of the called side can be obtained.

In an example, the calling device may sequentially perform FEC encoding, adding message group information, and adding tunnel information group processing on the voice message transmitted by the user terminal, and then obtain the voice coded data packet, and pass the voice coded data packet through the core Network transmission to the called device. Furthermore, the voice coded data packets that can be received by the called device undergo tunnel information group removal processing.

Step S220: Read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side.

The second intermediate message on the called side refers to a message obtained by the called device performing packet group information removal processing on the first intermediate message on the called side. The message group information can be obtained through system presets based on the RTP (Real-time Transport Protocol, real-time transport protocol) extended field.

Specifically, the called device can read the message group information in the first intermediate message of the called side, and remove the message group information from the first intermediate message of the called side, and then obtain the first intermediate message of the called side. 2. Intermediate messages.

Step S230: Perform FEC decoding processing on the second intermediate message on the called side according to the message group information to obtain a voice message.

Among them, FEC decoding refers to a decoding method that removes redundant error correction codes in the transmission code sequence. It should be noted that FEC decoding may be FEC decoding based on RTP.

Specifically, the called device can perform FEC decoding processing on the second intermediate message on the called side according to the read message group information, and then obtain the voice message, and can transmit the voice message to the called user terminal to improve The call quality of the user terminal.

Specifically, the called device can remove the tunnel information group of the voice coded data packet transmitted by the calling device to obtain the first intermediate message of the called side; and can read and remove the first intermediate message of the called side. Message group information to obtain the second intermediate message of the called side; according to the message group information, perform FEC decoding processing on the second intermediate message of the called side to obtain the voice message, and then through the FEC decoding process, the lost message The text has been restored to a certain extent.

In the aforementioned voice protection method, the called device can perform corresponding FEC decoding and unpacking processing on the voice encoded data packet transmitted by the calling device, thereby obtaining a voice message, and transmitting the voice message to the user terminal. When the voice message of the user terminal is transmitted between the called device and the calling device, it provides a relatively reliable guarantee for the transmission of the voice message between the access network device and the access network device, and does not damage the real-time voice call Sex. This improves the voice transmission quality and reduces the packet loss rate.

In a specific embodiment, the message group information includes: Group group sequence number, Group group size, Group group sequence number, redundant packet identifier, and payload length.

Specifically, the group sequence number can be used to indicate the position of the group; wherein, the code stream is composed of consecutive groups, and each group has a unique sequence number. The group size refers to the group size; for example, the group size of the current package is 11, that is, 11 packages are a group. The serial number in the group can be used to indicate the position of the unit contained in the group: for example, the position of the current packet in the group is 3, that is, the third. The redundant package identifier can be used to distinguish a data package from a redundant package; for example, 0 is a data package and 1 is a redundant package. The payload length refers to the payload length without RTP header/extended header, such as 200 bytes.

In a specific embodiment, the tunnel information group includes: GTP (GPRS Tunneling Protocol, GPRS Tunneling Protocol) tunnel information, UDP tunnel information, and IP tunnel information.

Among them, GTP tunnel information refers to tunnel information based on the GTP protocol, such as GTP tunnel header; UDP tunnel information refers to tunnel information based on UDP protocol, such as Slu tunnel UDP header; IP tunnel information refers to tunnel based on IP protocol Information, such as the Slu tunnel IP header.

In an embodiment, as shown in FIG. 3, a voice guarantee method on the calling device side is provided. Taking the method applied to the called device 102 in FIG. 1 as an example for description, the method includes the following steps:

Step S310: Receive the voice coded data packet transmitted by the calling device, and remove the tunnel information group of the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is sequentially processed by the voice message through the calling device It is obtained after processing FEC encoding, adding message group information, and adding tunnel information group.

Step S320: Read and remove the message group information in the first intermediate message on the called side to obtain the second intermediate message on the called side.

Step S330: Perform FEC decoding processing on the second intermediate message on the called side according to the message group information to obtain a voice message.

Among them, the specific content process of the above step S310, step S320 and step S330 can refer to the above content, which will not be repeated here.

Step S340, detecting whether the voice message is lost.

Specifically, the called device may perform packet loss detection on the voice message after FEC decoding; for example, detecting that the data of the voice message is empty, that is, indicating that the voice message has packet loss.

Step S350: When the result of the detection is yes, perform data recovery on the voice message according to the redundant package, and transmit the recovered voice message to the called user terminal; the redundant package is the second intermediate on the called side The message is obtained by FEC decoding processing.

Specifically, the called device performs FEC decoding processing on the second intermediate message on the called side to obtain the voice message and redundant packets. When the called device detects that the voice message has packet loss, it will use the corresponding redundant packet , Perform data recovery of the voice message, and transmit the recovered voice message to the called user terminal; when it is detected that the voice message does not have packet loss, the voice message can be directly transmitted to the called user terminal , Thereby ensuring the voice call quality between the calling user terminal and the called user terminal.

In a specific embodiment, the called device can discard (such as delete) the redundant packets after decoding, that is, the called device does not need to transmit the redundant packets to the called user terminal, which further saves additional bandwidth. The cost improves the efficiency of bandwidth usage.

In the above voice guarantee method, when the voice message of the user terminal is transmitted between the called device and the calling device, it can provide relatively reliable guarantee for the transmission of the voice message between the called device and the calling device. The user Volte call quality under the condition of heavy access network load and lack of systematic Qos coordination, thereby saving the cost of additional bandwidth and improving bandwidth usage efficiency.

In one embodiment, as shown in FIG. 4, a voice guarantee method on the calling device side is provided. Taking the method applied to the called device 102 in FIG. 1 as an example for description, the method includes the following steps:

Step S410: Obtain the downlink data packet transmitted by the calling device.

Step S420: Detect the QCI value of the downlink data packet, and confirm that the downlink data packet with the QCI value of 1 is a voice coded data packet.

Among them, the downlink data packet with a QCI value equal to 1 refers to a voice data packet.

Step S430: Transmit the downlink data packet with a QCI value greater than 1 to the called user terminal.

Among them, the downlink data packet with a QCI value greater than 1 refers to a non-voice data packet.

Step S440: Receive the voice coded data packet transmitted by the calling device, and remove the tunnel information group of the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is sequentially processed by the voice message through the calling device It is obtained after processing FEC encoding, adding message group information, and adding tunnel information group.

Step S450: Read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side.

Step S460: Perform FEC decoding processing on the second intermediate message on the called side according to the message group information to obtain a voice message.

Among them, the specific content process of step S440, step S450, and step S460 can refer to the above content, which will not be repeated here.

Specifically, the calling device can transmit the downlink data packet to the called device through the core network, and the called device can obtain the downlink data packet, and detect the QCI value of the obtained downlink data packet, and set the uplink with the QCI value of 1. The data packet is confirmed to be a voice-encoded data packet, and the downlink data packet with a QCI value of 1 is sequentially removed from the tunnel information group, the packet group information is removed, and the FEC decoding process is performed according to the packet group information to obtain the voice packet. Furthermore, the voice message can be transmitted to the called user terminal, so as to improve the call quality of the user terminal in an access network with poor transmission quality on the network side. The called device can also confirm the downlink data packet with a QCI value greater than 1 as a non-voice data packet, and directly transmit the downlink data packet with a QCI value greater than 1 to the called user terminal, realizing the protection of the called device and the calling device The transmission of voice data between the two does not hinder the transmission of non-voice data.

In the above-mentioned voice guarantee method, when the called device and the calling device transmit voice messages, the LTE access network device is integrated to extend the RTP deep processing and FEC transmission, and the network side transmission quality is poor in the access network. The call quality of Volte users compromises the reliability and real-time performance of Volte voice transmission, saving operators' transmission costs and improving bandwidth efficiency.

In one embodiment, as shown in FIG. 5, a voice guarantee method on the called device side is provided. Taking the method applied to the calling device 104 in FIG. 1 as an example for description, the method includes the following steps:

Step S510: FEC encoding, adding message group information, and adding tunnel information group processing are sequentially performed on the obtained voice message to obtain a voice coded data packet.

Step S520: Transmit the voice coded data packet to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, and send the first intermediate message to the called side. An intermediate message reads and removes the message group information to obtain the second intermediate message of the called side, and according to the message group information, performs FEC decoding processing on the second intermediate message of the called side to obtain the voice message .

Specifically, the calling device can receive the voice message transmitted by the calling user terminal, and perform FEC encoding on the obtained voice message. Through the FEC encoding process, voice data packets and redundant packets can be obtained, which improves the message performance. Transmission guarantee of access network. The calling device sequentially adds message group information and tunnel information group to the encoded voice message to obtain a voice coded data packet, and can transmit the voice coded data packet to the called device through the core network. Furthermore, the called device can perform corresponding decoding and unpacking processing on the received voice coded data to obtain a voice message, and transmit the voice message to the called user terminal. Improve the call quality of the user terminal in the access network with poor transmission quality on the network side.

It should be noted that the calling device may be an access network device on the calling side, and the called device may be an access network device on the called side.

In the above voice guarantee method, when the voice message of the calling user terminal is transmitted between the calling device and the called device, it can provide relatively reliable guarantee for the transmission of the voice message between the calling device and the called device. , Without compromising the real-time nature of voice calls. This improves the voice transmission quality and reduces the packet loss rate.

In one embodiment, as shown in FIG. 6, a voice guarantee method on the called device side is provided. Taking the method applied to the calling device 104 in FIG. 1 as an example for description, the method includes the following steps:

Step S610: Perform FEC encoding processing on the acquired voice message to obtain the first intermediate message on the calling side.

Among them, the first intermediate message on the calling side refers to a message obtained by the calling device performing FEC encoding processing on the voice message. The voice message may be message data generated by the user through the user terminal, the user terminal may be a Volte user terminal, and the voice message generated by the corresponding user terminal may be a Volte voice message. FEC coding refers to the coding method by adding redundant error correction codes to the transmission code sequence. It should be noted that the FEC encoding may be FEC encoding based on RTP.

For example, when a user uses a calling user terminal to make a voice call, the calling user terminal can obtain the voice generated by the user, obtain a voice message, and transmit the obtained voice message to the calling device. The calling device may obtain the voice message, and perform FEC encoding processing on the obtained voice message, so as to obtain the first intermediate message on the calling side.

Step S620, based on the RTP extension field, add message group information to the first intermediate message on the calling side to obtain a second intermediate message on the calling side.

Among them, the RTP extension field refers to the extension field based on the RTP protocol; the message group information refers to information related to FEC encoding and decoding; the message group information can be obtained through system preset based on the RTP extension field. The second intermediate message on the calling side refers to a message obtained by adding message group information to the first intermediate message on the calling side.

Specifically, the calling device can obtain the message group information according to the result of the FEC encoding processing; and fill the message group information with the first intermediate message on the calling side based on the extension field of the RTP protocol, and then obtain the second message on the calling side. Intermediate message.

Step S630: Add a tunnel information group to the second intermediate message on the calling side to obtain a voice coded data packet.

Among them, the tunnel information group may include multiple types of tunnel information. The voice coded data packet refers to the data packet obtained by adding a tunnel information group to the second intermediate message on the calling side.

Specifically, the calling device can add a corresponding tunnel information group to the second intermediate message of the calling side; for example, adding corresponding tunnel information to the voice data packet in the second intermediate message of the calling side, and to the calling side The redundant packet in the second intermediate message adds corresponding tunnel information to obtain the voice coded data packet, so that the voice coded data packet can be transmitted to the called device through the core network under the condition that the voice quality is guaranteed.

It should be noted that the calling device may also add a corresponding Ethernet (Ethernet) header to the second intermediate message on the calling side to form a complete data packet.

Step S640, the voice coded data packet is transmitted to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, and give the first intermediate message to the called side. An intermediate message reads and removes the message group information to obtain the second intermediate message of the called side, and according to the message group information, performs FEC decoding processing on the second intermediate message of the called side to obtain the voice message .

For the specific content process of the above step S640, please refer to the above content, which will not be repeated here.

In the above-mentioned voice guarantee method, in the above-mentioned voice guarantee method, when the calling device and the called device transmit voice messages, the LTE access network device is integrated to extend the RTP deep processing and FEC transmission, and the transmission quality on the network side is not good. In the access network, the call quality of Volte users is improved, the reliability of Volte voice transmission and real-time performance are compromised, the transmission cost of operators is saved, and the bandwidth efficiency is improved.

Specifically, the group sequence number can be used to indicate the position of the group; wherein, the code stream is composed of consecutive groups, and each group has a unique sequence number. The group size refers to the group size; for example, the group size of the current package is 11, that is, 11 packages are a group. The sequence number in the group can be used to indicate the position of the unit contained in the group: for example, the position of the current packet in this group is 3, that is, the third. The redundant package identifier can be used to distinguish a data package from a redundant package; for example, 0 is a data package and 1 is a redundant package. The payload length refers to the payload length without RTP header/extended header, such as 200 bytes.

In one embodiment, as shown in FIG. 7, a method for voice protection on the called device side is provided. Taking the method applied to the calling device 104 of FIG. 1 as an example for description, the method includes the following steps:

Step S710: Obtain the uplink data packet transmitted by the calling user terminal.

Among them, the called user terminal can be a Volte user terminal; the uplink data packet refers to a data packet transmitted by the called user terminal to the called device; optionally, the uplink data packet can be a voice data packet or a non-voice data packet .

Step S720: Detect the QCI (QoS Class Identifier, scale value) value of the uplink data packet, and confirm the uplink data packet with a QCI value of 1 as a voice packet.

Among them, the QCI value can be used to specify the control bearer-level packet forwarding mode defined in the access node. Different QCI values correspond to different data types; an uplink data packet with a QCI value of 1 is a voice message.

Step S730: Transmit the uplink data packet with a QCI value greater than 1 to the called device.

Among them, the uplink data packet with a QCI value greater than 1 refers to a non-voice data packet.

Step S740: FEC encoding, adding message group information, and adding tunnel information group processing are sequentially performed on the acquired voice message to obtain a voice coded data packet.

Step S750, the voice coded data packet is transmitted to the called device; the voice coded data packet is used to instruct the called device to remove the tunnel information group of the voice coded data, obtain the first intermediate message of the called side, and send the first intermediate message to the called side. An intermediate message reads and removes the message group information to obtain the second intermediate message of the called side, and according to the message group information, performs FEC decoding processing on the second intermediate message of the called side to obtain the voice message .

For the specific content process of the above step S740 and step S750, please refer to the above content, which will not be repeated here.

Specifically, the calling device can obtain the uplink data packet transmitted by the calling user terminal, detect the QCI value of the obtained uplink data packet, and confirm the uplink data packet with a QCI value of 1 as a voice packet, and check The uplink data packet with the QCI value of 1 is FEC encoded, and the corresponding packet group information and the corresponding tunnel information group are added based on the RTP extension field to obtain the voice coded data packet, which can then be transmitted through the core network For the called device, the call quality of the user terminal can be improved in the access network with poor transmission quality on the network side. The called device can also confirm the uplink data packet with a QCI value greater than 1 as a non-voice packet, and directly transmit the uplink data packet with a QCI value greater than 1 to the core network, so as to ensure the protection between the calling device and the called device The transmission of voice data does not interfere with the transmission of non-voice data.

The above voice guarantee method can provide relatively reliable guarantee for the transmission of the voice message between the calling device and the called device when the voice message of the user terminal is transmitted between the access network device and the access network device. , Improve the user Volte call quality in the case of heavy access network load and lack of systematic Qos (Quality of Service) coordination, thereby saving the cost of additional bandwidth and improving the efficiency of bandwidth usage.

It should be understood that although the various steps in the flowcharts of FIGS. 2-7 are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless specifically stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least part of the steps in Figures 2-7 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. These sub-steps or stages The execution order of is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

In an embodiment, as shown in FIG. 8, a voice guarantee device on the side of the called device is provided, including:

The called device tunnel information group removal unit 810 is used to receive the voice coded data packet transmitted by the calling device, and perform tunnel information group removal on the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is The voice message is obtained after the calling device sequentially performs FEC encoding, adding message group information, and adding tunnel information group processing.

The message group information removal unit 820 of the called device is configured to read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side.

The called device decoding processing unit 830 is configured to perform FEC decoding processing on the second intermediate message on the called side according to the message group information to obtain a voice message.

For the specific limitation of the voice guarantee device on the called device side, please refer to the above limitation on the voice guarantee method on the called device side, which will not be repeated here. The various modules in the voice guarantee device on the called device side can be implemented in whole or in part by software, hardware, and combinations thereof. The above-mentioned modules can be embedded in the form of hardware or independent of the processor in the access network equipment cluster system, or can be stored in the memory of the access network equipment cluster system in the form of software, so that the processor can call and execute each of the above Operation corresponding to the module.

In an embodiment, as shown in FIG. 9, a voice guarantee device on the calling device side is provided, including:

The calling device encoding processing unit 910 is configured to sequentially perform FEC encoding, adding message group information, and adding tunnel information group processing on the acquired voice message to obtain a voice coded data packet.

The calling device data transmission unit 920 is used to transmit the voice coded data packet to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side , Read and remove the message group information of the first intermediate message of the called side to obtain the second intermediate message of the called side, and perform FEC on the second intermediate message of the called side according to the message group information Decoding and processing to obtain voice messages.

For the specific limitation of the voice guarantee device on the calling device side, please refer to the above limitation on the voice guarantee method on the calling device side, which will not be repeated here. The various modules in the voice guarantee device on the calling device side can be implemented in whole or in part by software, hardware, and combinations thereof. The above-mentioned modules can be embedded in the form of hardware or independent of the processor in the access network equipment cluster system, or can be stored in the memory of the access network equipment cluster system in the form of software, so that the processor can call and execute each of the above Operation corresponding to the module.

In one embodiment, as shown in FIG. 10, an access network device cluster system is provided, which includes a called device 110 and a calling device 120 connected to the called device 110.

Among them, the called device 110 may be an access network device on the called side (such as a Volte base station device), or a cluster composed of multiple access network devices (such as a cluster composed of multiple Volte base station devices); the calling device 120 may be an access network device on the calling side (such as a Volte base station device), or may be a cluster composed of multiple access network devices (a cluster composed of multiple Volte base station devices). It should be noted that the called device 110 may be connected to the calling device 120 through a core network.

The called device 110 is used to execute the voice guarantee method, including the following steps:

The calling device 120 is used to execute the voice guarantee method, including the following steps:

Specifically, the calling device 120 may obtain the voice message transmitted by the calling user terminal, perform FEC encoding on the voice message, add corresponding message group information and add the corresponding tunnel information group based on the RTP extension field, etc., to obtain The voice coded data packet can then be transmitted to the core network, so as to improve the call quality of the user terminal in the access network with poor transmission quality on the network side.

The called device 110 can obtain the voice coded data packet transmitted by the core network, and remove the tunnel information group, remove the message group information, and perform FEC decoding processing on the voice coded data packet according to the message group information to obtain the voice message. In turn, the voice message can be transmitted to the calling user terminal, so as to improve the call quality of the user terminal in an access network with poor transmission quality on the network side.

In the above-mentioned access network equipment cluster system. Through FEC encoding and decoding and RTP protocol extension, a layer of Volte voice transmission guarantee is formed between the called device and the calling device, and the user Volte call is improved in the case of heavy access network load and lack of systematic QoS coordination. Quality, thereby saving the cost of additional bandwidth, improving the efficiency of bandwidth usage, and reducing the packet loss rate.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

When the computer program is executed by the processor, the following steps are implemented:

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage. In the medium, when the computer program is executed, it may include the processes of the above embodiments of the division operation methods. Wherein, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and/or volatile memory. Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A voice guarantee method includes the following steps:

Receive the voice coded data packet transmitted by the calling device, and remove the tunnel information group of the voice coded data packet to obtain the first intermediate message of the called side; the voice coded data packet is transferred from the voice message to the calling party The device sequentially performs FEC encoding, adding message group information, and adding tunnel information group processing to obtain the result;

Read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side;

According to the message group information, perform FEC decoding processing on the second intermediate message of the called side to obtain a voice message.
The voice protection method according to claim 1, wherein after the step of performing FEC decoding processing on the second intermediate message of the called side according to the message group information, and obtaining the voice message, the method includes step:

Detecting whether the voice message is lost;

When the result of the detection is yes, perform data recovery on the voice message according to the redundant package, and transmit the recovered voice message to the called user terminal; the redundant package is for the called user terminal. The second intermediate message on the calling side is obtained by performing FEC decoding processing.
The voice guarantee method according to claim 1 or 2, characterized in that, before the step of receiving the voice coded data packet transmitted by the calling device, the method comprises the following steps:

Acquiring a downlink data packet transmitted by the calling device;

The QCI value of the downlink data packet is detected, and the downlink data packet with the QCI value of 1 is confirmed as the voice encoding data packet.
The voice guarantee method according to claim 3, wherein after the step of detecting the QCI value of the downlink data packet, the method comprises the following steps:

The downlink data packet with a QCI value greater than 1 is transmitted to the called user terminal.
A voice guarantee method includes the following steps:

FEC encoding, adding message group information, and adding tunnel information group processing are sequentially performed on the obtained voice message to obtain a voice coded data packet;

The voice coded data packet is transmitted to the called device; the voice coded data packet is used to instruct the called device to remove the voice coded data from the tunnel information group to obtain the first intermediate message of the called side, and The message group information is read and removed for the first intermediate message of the called side to obtain the second intermediate message of the called side. According to the message group information, the second intermediate message of the called side The message undergoes FEC decoding processing to obtain a voice message.
The voice guarantee method according to claim 5, wherein the step of performing FEC encoding, adding message group information, and adding tunnel information group processing on the acquired voice message in sequence, and obtaining the voice coded data packet comprises:

Perform FEC encoding processing on the acquired voice message to obtain the first intermediate message on the calling side;

Based on the RTP extension field, adding message group information to the first intermediate message on the calling side to obtain a second intermediate message on the calling side;

Add a tunnel information group to the second intermediate message on the calling side to obtain the voice coded data packet.
The voice guarantee method according to claim 5, characterized in that, before the step of sequentially performing FEC encoding, adding message group information, and adding tunnel information group to the acquired voice message, the step of obtaining the voice coded data packet includes step:

Obtain the uplink data packet transmitted by the calling user terminal;

The QCI value of the uplink data packet is detected, and the uplink data packet with the QCI value of 1 is confirmed as the voice packet.
7. The voice guarantee method according to claim 7, wherein after the step of detecting the QCI value of the uplink data packet, the method comprises:

Transmit the uplink data packet with a QCI value greater than 1 to the called device.
The voice guarantee method according to any one of claims 5 to 8, wherein the message group information includes: Group group sequence number, Group group size, Group group sequence number, redundant packet identifier and payload length.
The voice guarantee method according to any one of claims 5 to 8, wherein the tunnel information group includes: GTP tunnel information, UDP tunnel information, and IP tunnel information.
A voice guarantee device, including:

The called device tunnel information group removal unit is configured to receive the voice coded data packet transmitted by the calling device, and perform tunnel information group removal on the voice coded data packet to obtain the first intermediate message of the called side; the voice code The data packet is obtained by sequentially processing FEC encoding, adding message group information, and adding tunnel information group to a voice message by the calling device;

The message group information removal unit of the called device is configured to read and remove the message group information in the first intermediate message of the called side to obtain the second intermediate message of the called side;

The called device decoding processing unit is configured to perform FEC decoding processing on the second intermediate message of the called side according to the message group information to obtain a voice message.
A voice guarantee device, including:

The calling device encoding processing unit is configured to sequentially perform FEC encoding, adding message group information, and adding tunnel information group processing on the acquired voice messages to obtain voice encoded data packets;

The calling device data transmission unit is used to transmit the voice coding data packet to the called device; the voice coding data packet is used to instruct the called device to remove the voice coding data from the tunnel information group to obtain the called device Call the first intermediate message on the called side, read and remove the message group information of the first intermediate message on the called side to obtain the second intermediate message on the called side, and also according to the message group information, Perform FEC decoding processing on the second intermediate message of the called side to obtain a voice message.
An access network equipment cluster system, including a calling device and a called device connected to the calling device;

The called device is used to execute the voice guarantee method according to any one of claims 1 to 4;

The calling device is used to execute the voice guarantee method according to any one of claims 5 to 10.
A computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the voice guarantee method according to any one of claims 1 to 10 are realized.