CN109729552B - Voice transmission method and device - Google Patents
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Abstract
The invention provides a voice transmission method and a voice transmission device. The method comprises the following steps: receiving voice information sent by a terminal and an identifier of at least one other terminal, wherein the voice information is coded by adopting an NVOC voice coding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, and the RB allocated to the voice information is minimum 1. The data volume of the coded voice information is reduced, so that the number of RBs allocated to the voice data by the LTE network is 1 at minimum, and the signal-to-noise ratio of the voice signal is larger under the condition that the maximum transmitting power of the terminal and the network side is fixed; under the condition that the frequency band of each bearing signal in the LTE network is small, the power spectral density of the frequency band of each bearing signal is large, and the radius of a cell covered by the LTE network when voice is transmitted is improved.
Description
Technical Field
The present invention relates to communications technologies, and in particular, to a voice transmission method and apparatus.
Background
With the development of wireless communication technology, trunking communication technology is developed from analog systems to narrowband data trunking systems and broadband digital trunking systems; in addition, with the increasing demand of users for wireless broadband, from the previous simple voice service, a digital trunking communication system represented by Long Term Evolution (LTE) has been developed.
In the prior art, an Adaptive Multi-Rate Codec (AMR) voice service may be carried in an LTE network. In The LTE network of The third Generation Partnership Project (3 GPP), The LTE network uses Voice over Internet Protocol (VoIP) technology to support Voice services; for Trunking Communication, an LTE Network uses a Multicast/Multicast Single Frequency Network (MBSFN) Network Protocol (Internet Protocol, IP for short) Multicast to support a voice cluster, for example, in Broadband Trunking Communication (B-trunk), a VoIP technology or an AMR Over Packet Data Convergence Protocol (PDCP) technology is used to support a voice service, and an AMR coding format is used as a voice coding mode.
However, in the prior art, when voice transmission is performed in an LTE network, the data size of the coded voice information is large because the voice information is coded and decoded by using an AMR coding format or an AMR Over PDCP technology; furthermore, since the VoIP technology is mainly used in the LTE network to transmit the encoded voice information, the addition of the IP header further increases the size of the datagram carrying the encoded voice information. For the above reasons, when voice transmission is performed in the LTE network, the data volume of the encoded voice information transmitted in the LTE network is large, so that more physical Resource Blocks (RBs) allocated to the voice data by the LTE network are generated, and further, the frequency band carrying signals in the network is large, and the uplink maximum transmission power of the terminal is a fixed value, so that the power spectral density of the signals is small, and the radius of a cell covered by the LTE network is small when voice is transmitted in the LTE network. For example, when a 350MHz Frequency Division Duplex (FDD) LTE network transmits voice, the radius of a covered cell is about 8 Km; when the LTE network of 1.4GHz transmits voice, the radius of a covered cell is about 2-5 Km.
Disclosure of Invention
The invention provides a voice transmission method and a voice transmission device, which are used for solving the problem that the radius of a cell covered by an LTE network is smaller when voice is transmitted in the LTE network.
In one aspect, the present invention provides a voice transmission method, including:
receiving voice information sent by a terminal and an identifier of at least one other terminal, wherein the voice information is coded by adopting an NVOC voice coding and decoding format;
and in the LTE network, transmitting the voice information to other terminals corresponding to the identifier of each other terminal in the identifiers of the at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1.
In another aspect, the present invention provides a voice transmission apparatus, including:
the first receiving module is used for receiving voice information sent by a terminal and an identifier of at least one other terminal, wherein the voice information is coded by adopting an NVOC voice coding and decoding format;
a first sending module, configured to send, in an LTE network, the voice information to other terminals corresponding to an identifier of each of the at least one other terminal in a non-IP transmission manner, where a minimum RB allocated to the voice information is 1.
The voice transmission method and the voice transmission device provided by the invention receive the voice information sent by the terminal and the identification of at least one other terminal, wherein the voice information is coded by adopting an NVOC voice coding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1. The voice information is coded by adopting an NVOC voice coding and decoding format, so that the data volume of the coded voice information is smaller; and the voice information is transmitted by adopting a non-IP transmission mode, so that the situation that an IP head is added into the voice information when the voice information is transmitted by adopting a VoIP technology is avoided, and the voice information does not have the IP head, so that the data volume of the coded voice information is further reduced. Therefore, when voice transmission is performed in the LTE network, the data volume of the coded voice information transmitted in the LTE network is small, so that the RB allocated to the voice data by the LTE network is small, and thus the limitation that the RB allocated to the voice information in the LTE network standard is 2 in the minimum can be broken through.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a communication system architecture;
fig. 2 is a schematic flowchart of a voice transmission method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another voice transmission method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a voice transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another voice transmission apparatus according to an embodiment of the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terms to which the present invention relates will be explained first:
police Digital Trunking (PDT) network: the PDT network is a narrow-band communication network, and can meet the requirements of users in most trunking communication industries.
Pan European Trunked Radio (TETRA) network: TETRA network is a narrowband communication network, and is a wireless trunked mobile communication system based on digital time division multiple access technology.
An LTE network: the LTE network is a broadband communication network, and is a Universal Mobile Telecommunications System (UMTS) technical standard established by The 3rd Generation Partnership Project (3 GPP) organization.
Vocoder Forward Error Correction (FEC): is a method for increasing the reliability of data communication. In a one-way communication channel, once an error is found, its receiver will not be entitled to re-request transmission; FEC is a method of transmitting redundant information using data that will allow a receiver to reconstruct the data when an error occurs in the transmission.
B-trunC: the system is a private network broadband trunking system standard of 'LTE digital transmission + trunking voice communication' based on Time Division Long Term Evolution (TD-LTE for short) established by broadband trunking industry alliance organization.
Quality of Service (QoS): the network can utilize various basic technologies, is a security mechanism of the network, and is a technology for solving the problems of network delay, network congestion and the like.
The data transmission method provided by the present invention can be applied to the schematic diagram of the communication system architecture shown in fig. 1. As shown in fig. 1, the communication system includes: an access network device 01 and a plurality of terminal devices 02. It should be noted that the communication system shown in fig. 1 can be applied to each network system in the LTE network.
Therefore, optionally, the base station may be an evolved Node B (eNB or eNodeB) in LTE, or a relay station or an access point, which is not limited herein.
The terminal device may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core Network devices via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For another example, the Wireless terminal may also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and other devices. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein. Optionally, the terminal device may also be a smart watch, a tablet computer, or the like.
The specific application scenario of the present invention is as follows. As a PDT network in a Narrow-band digital cluster, a Narrow-band Vocoder (NVOC) Voice coding and decoding mode is adopted, and a TETRA network adopts an encoding format which can adopt an Advanced Multi-band Excitation Vocoder (AMBE) to support Voice transmission. When voice transmission is carried out in an LTE network, because an AMR coding format or an AMR Over PDCP technology is adopted to code and decode voice information, the data volume of the coded voice information is larger; furthermore, since the VoIP technology is mainly used in the LTE network to transmit the encoded voice information, the addition of the IP header further increases the size of the encoded datagram carrying the voice information. For the above reasons, when voice transmission is performed in the LTE network, the data volume of the encoded voice information transmitted in the LTE network is large, so that more RBs allocated to the voice data by the LTE network are caused, and further, the frequency band for carrying signals in the network is large, and the uplink maximum transmission power of the terminal is a fixed value, so that the power spectral density of the signal is small, and thus the radius of a cell covered by the LTE network is small when voice is transmitted in the LTE network. For example, when a 350MHz FDD LTE network transmits voice, the radius of a covered cell is about 8 Km; when the LTE network of 1.4GHz transmits voice, the radius of a covered cell is about 2-5 Km.
And comparing the LTE network with the PDT network. Because the narrowband speech coding format is different from the wideband speech coding format, the Bit number of the data output by the encoder of the narrowband communication network is different from the Bit number of the data output by the encoder of the wideband communication network. The transmitting power of the PDT network is different from that of the LTE network, and the transmitting power of a base station under the PDT network can be 50W @12.5KHz at most; the transmitting power of a base station in the LTE network can be generally 80W @20MHz, and a few base stations can also be 160W @20 MHz; further, the average transmit power spectral densities of the LTE network and the PDT network are different. In addition, under the condition that the terminal power is limited, the LTE network allocates more RBs, for example, amr12.2k allocates 3 RBs at the edge of a cell, the power spectral density of a signal is smaller, and the signal-to-noise ratio is more, thereby affecting the voice coverage radius.
Moreover, as can be seen from the above analysis, in the LTE network, it is difficult to increase the radius of the cell covered by the LTE network when transmitting voice in a manner of increasing the transmission power for voice service, and the radius cannot reach the radius of the cell covered by the PDT network when transmitting voice. Therefore, when voice is transmitted in the LTE network, how to increase the radius of a cell covered by the LTE network is an urgent problem to be solved.
The invention provides a voice transmission method and a voice transmission device, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 is a flowchart illustrating a voice transmission method according to an embodiment of the present application. As shown in fig. 2, the method includes:
In this embodiment, specifically, the network device is taken as an execution subject in the embodiment, and the network device is a network device in an LTE network. The terminal has established a connection with other terminals, for example, the terminal performs a point-to-point voice service with one other terminal or the terminal performs a group voice service with a plurality of other terminals.
Then, the terminal acquires voice information, and the terminal encodes the voice information by adopting an NVOC voice coding and decoding format; then the terminal sends the coded voice information to the network equipment, and the terminal sends the identification of at least one other terminal to the network equipment.
The network device may receive the encoded voice information sent by the terminal.
And 102, in the LTE network, sending the voice information to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1.
In this embodiment, specifically, the network device transmits the voice information encoded in the NVOC voice codec format in a non-IP transmission manner. Specifically, the network device determines the other terminal corresponding to the identifier of each of the at least one other terminal, and then transmits the voice information encoded in the NVOC voice codec format to each of the other terminals in a non-IP transmission manner. And then the VoIP mode is not adopted to transmit the voice information. In addition, in the transmission process, because the voice information is encoded by adopting the NVOC voice encoding and decoding format, the RB allocated to the voice information can be determined to be 1 at the minimum.
In this embodiment, the voice information sent by the terminal and the identifier of at least one other terminal are received, where the voice information is encoded by using an NVOC voice encoding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1. The voice information is coded by adopting an NVOC voice coding and decoding format, so that the data volume of the coded voice information is smaller; and the voice information is transmitted by adopting a non-IP transmission mode, so that the situation that an IP head is added into the voice information when the voice information is transmitted by adopting a VoIP technology is avoided, and the voice information does not have the IP head, so that the data volume of the coded voice information is further reduced. Therefore, when voice transmission is performed in the LTE network, the data volume of the coded voice information transmitted in the LTE network is small, so that the RB allocated to the voice data by the LTE network is small, and thus the limitation that the RB allocated to the voice information in the LTE network standard is 2 in the minimum can be broken through.
Fig. 3 is a flowchart illustrating another voice transmission method according to an embodiment of the present application. As shown in fig. 3, the method includes:
In this embodiment, specifically, the terminal sends the connection request and the at least one voice codec format supported by the terminal to the network device, and the at least one voice codec format supported by the terminal may be carried in the voice codec format information. Furthermore, the network device receives the connection request sent by the terminal and the voice coding and decoding format information of the terminal.
For example, the terminal sends a voice call request to the network device, the voice call request representing that the terminal requests a point-to-point voice service with one other terminal, and at least one voice codec format supported by the terminal. Or, the terminal sends a group establishment request and at least one voice coding and decoding format supported by the terminal to the network device, wherein the group establishment request represents that the terminal requests to perform a group voice service with each terminal of at least one other terminal.
For example, when the terminal reports the speech codec format information to the network device, the terminal may optionally report the speech codec format information of the terminal during registration, if the default non-NVOC speech codec format is not reported, the codes during reporting are as follows:
In this embodiment, specifically, the network device may obtain a speech codec format set, where the speech codec format set includes speech codec format information of different terminals. Furthermore, after the network device receives the connection request of the terminal, the network device may query the voice codec format information of each other terminal called by the terminal.
The mode of configuring the network parameter set is as follows: selecting an NVOC voice coding and decoding format and acquiring a channel state; according to the NVOC voice coding and decoding format and the channel state, at least one of the following parameters is allocated: QoS Class Identifier (QCI), Guaranteed Bit Rate (GBR), Transmission Time Interval (TTI), Allocation and Retention Priority (ARP).
In this embodiment, specifically, the network device determines and analyzes the speech codec format information of the terminal and the speech codec format information of each of the other terminals, so as to determine which speech codec formats are supported by the terminal and each of the other terminals.
If the network device determines that the NVOC voice codec format supported by the terminal and each of the other terminals, the network device may configure a network parameter set including parameters supporting the NVOC voice codec format. When the network equipment configures the network parameter set, specifically, the network equipment configures a voice coding and decoding format to be an NVOC voice coding and decoding format, then the network equipment selects an index value corresponding to the NVOC voice coding and decoding format, and then determines a QCI corresponding to the index value; then, the network device allocates RB for transmitting the voice information according to the QCI and the channel status, where the RB allocated for transmitting the voice information may be 1 at the minimum, and the network device may allocate GBR, ARP and TTI for transmitting the voice information. Wherein, GBR represents the time delay when the voice information is transmitted; the QCI characterizes the service characteristics of the voice information, such as whether the delay is sensitive or not or whether retransmission is needed or not; the ARP is used for allocating preemption and preemption priority when the channel resource is in shortage. QCI, GBR, ARP, etc. are QoS parameters.
Therefore, when the terminal initiates a point-to-point voice service or a group voice service, the terminal reports the supported voice coding and decoding format information to the network equipment, wherein the terminal supporting the NVOC voice coding and decoding format sends the support capability information indicating the NVOC voice coding format to the network equipment. Under the condition that the network side determines that the terminal and other terminals called by the terminal both support the NVOC voice coding mode, the network equipment configures corresponding parameters.
And step 204, sending the network parameter set to the terminal and each other terminal of the at least one other terminal, so that the terminal and each other terminal of the at least one other terminal determine to encode the voice information in an NVOC voice encoding and decoding format according to the network parameter set.
Wherein, the network parameter set comprises at least one of the following parameters: and index values, service types, QCI, GBR, TTI and ARP corresponding to the NVOC voice coding and decoding format. The service type represents the service type of the voice service initiated by the terminal.
In this embodiment, specifically, the network device sends the configured network parameter set to the terminal and each of the other terminals respectively. And the terminal and each other terminal determine that the voice communication needs to be carried out in an NVOC voice coding mode.
Therefore, when the terminal receives the voice information, the terminal needs to encode the voice information by adopting an NVOC voice encoding and decoding format.
In this embodiment, specifically, this step may refer to step 101 in fig. 2, and is not described again.
In this embodiment, specifically, when the network device is in an LTE network state, the network device first sends the received coded voice information to a PDCP layer and a Radio Link Control (RLC) layer in a non-IP transmission manner; then, a physical (Media Access Control, MAC for short) layer of the network device schedules the coded voice information processed in the PDCP layer and the RLC layer, the MAC layer of the network device schedules the coded voice information and allocates RBs carried by the voice coded information, because the amount of data after voice coding is small, the limit of the existing LTE standard can be broken through, one RB can be allocated at minimum, and then the processes of scrambling, coding, rate matching and the like of the physical layer of the LTE are performed.
In this embodiment, specifically, after step 206, the physical layer of the network device sends the processed voice information to the air interface in the network device.
Then, the air interface sends the encoded voice information to one other terminal or each other terminal by using a non-IP transmission method, and further, the air interface carries NVOC voice encoding by using a non-IP method, for example, for a point-to-point voice service, the encoded voice information may be 48Bit/72Bit data, and for a group voice service, downlink data of the group voice may be set as a Normal Cyclic Prefix (CP) or an extended CP according to a requirement. Or the air interface sends the coded voice information to the core network by adopting a non-IP transmission mode; the network equipment adds an IP head in the coded voice information sent to the core network, and the core network then sends the voice information added with the IP head to the switching equipment; the switching equipment sends the IP data to the network equipment of other terminals, wherein the network equipment of the terminal can be the same as the network equipment of other terminals, then the network equipment of other terminals removes the IP head in the voice information, and the network equipment of other terminals sends the voice data without the IP head to another air interface; the other air interface transmits the voice data without the IP header to the other terminal. In the above process, when the air interface transmits the voice information, the voice information has no IP header, and thus the data size of the encoded voice information is further reduced.
Furthermore, when the terminal performs the point-to-point voice service with one other terminal, the terminal and the other terminal can receive the voice data of the point-to-point voice service of the NVOC code; when the terminal performs a group voice service with a plurality of other terminals, the terminal and the other terminals may receive the cluster voice data encoded by the NVOC.
In this embodiment, the voice information sent by the terminal and the identifier of at least one other terminal are received, where the voice information is encoded by using an NVOC voice encoding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1. The voice information is coded by adopting an NVOC voice coding and decoding format, so that the data volume of the coded voice information is smaller; and the voice information is transmitted by adopting a non-IP transmission mode, so that the situation that an IP head is added into the voice information when the voice information is transmitted by adopting a VoIP technology is avoided, and the voice information does not have the IP head, so that the data volume of the coded voice information is further reduced. Therefore, when voice transmission is performed in the LTE network, the data volume of the coded voice information transmitted in the LTE network is small, so that the RB allocated to the voice data by the LTE network is small, and thus the limitation that the RB allocated to the voice information in the LTE network standard is 2 in the minimum can be broken through. And when the terminal initiates the point-to-point voice service or the group voice service, the terminal reports the supported voice coding and decoding format information to the network equipment, wherein the terminal supporting the NVOC voice coding and decoding format sends the support capability information indicating the NVOC voice coding format to the network equipment. Under the condition that the network side determines that the terminal and other terminals called by the terminal both support the NVOC voice coding mode, the network equipment configures corresponding parameters; and the network equipment sends the configured network parameter set to the terminal to be communicated, and then the terminal and each other terminal determine that voice communication needs to be carried out in an NVOC voice coding mode. Moreover, under the condition of introducing the NVOC coding and decoding mode, because the data volume of the voice coding is small, no matter 48 bits or 72 bits, one RB can be used for bearing voice data, so that the limitation of an LTE network is broken through, scheduling and allocation of one RB are supported, and the purposes of improving the power spectral density and the coverage radius are achieved.
In an optional implementation manner, the connection request is a voice call request, and the voice call request represents that the terminal requests to perform a point-to-point voice service with one other terminal; step 203, comprising the steps of:
step 2031a, when it is determined that the terminal and each of the at least one other terminal support the NVOC voice codec format according to the voice codec format information of the terminal and the voice codec format information of each of the at least one other terminal, acquiring a first network type of a network used by the terminal and a second network type of a network used by one other terminal.
In this embodiment, specifically, if the terminal initiates a voice call request for performing a peer-to-peer voice service in step 201, and then the network device determines that the network types of the terminal and other terminals are determined when the network device and other terminals called by the terminal both support the NVOC voice codec format in step 203. Because the terminal and other terminals are connected with the network device, the network device can determine the network used by the terminal and the networks used by other terminals, and the network device determines the first network type of the network used by the terminal and the second network type of the networks used by other terminals.
Step 2032a, if it is determined that the first network type is an LTE network and the second network type is a PDT network, or that the first network type is a PDT network and the second network type is an LTE network, determining the index value as a first index value, and configuring a network parameter set.
In this embodiment, specifically, if the network device determines that the network used by the terminal is the LTE network and the networks used by the other terminals are PDT networks, or determines that the network used by the terminal is the PDT network and the networks used by the other terminals are LTE networks, the network device determines that the Index value corresponding to the NVOC voice codec format is a first Index value, for example, the first Index value is QCI Index N2, and configures the network parameter set.
Step 2033a, if it is determined that the first network type and the second network type are both LTE networks, determining the index value as a second index value, and configuring a network parameter set.
In this embodiment, specifically, if the network device determines that the network used by the terminal and the network used by the other terminal are both LTE networks, the network device determines that the Index value corresponding to the NVOC voice codec format is the second Index value, for example, the second Index value is QCI Index N1, and configures the network parameter set.
And the first index value indicates that the uncoded voice information is coded by adopting the NVOC voice coding and decoding format and is processed by adopting a vocoder Forward Error Correction (FEC) processing mode, and the second index value indicates that the uncoded voice information is coded by adopting the NVOC voice coding and decoding format.
For example, a voice Vocoder (Vocoder) used in the NVOC voice codec employs 8kHz sampling 20ms frames, and the encoding rate is 2.4kb/s, and 48 bits/frame can be output, or the encoding rate is 2.15kb/s, and 43 bits/frame can be output; processing the voice information by adopting an FEC processing mode to obtain FEC data, wherein the size of the FEC data is 24 bits; when the voice information is processed by adopting a Vocoder and FEC processing mode, the coding rate can be determined to be 3.6kb/s, and 72 bits/frame can be output. Furthermore, if the network used by the terminal is an LTE network and the network used by another terminal is a PDT network, or the network used by the terminal is a PDT network and the network used by another terminal is an LTE network, the terminal may use 72-Bit data as the bearer, and when the NVOC codec scheme and the FEC data are combined between the terminal of the LTE network and the terminal of the PDT network, the transmission of the voice coded data is completed. The size of data obtained by aiming at an NVOC coding and decoding mode is 48 bits, and the FEC data obtained during PDT narrow-band coding is 24 bits; when a terminal of the PDT network communicates with a terminal of the LTE network, when coverage priority needs to be considered, a QCI parameter may be defined, for example, QCI is 1, or an extended QCI Index N1 is defined, or a value of the QCI parameter may be defined according to priority of coverage and capacity; further obtaining an Index value QCI Index N1, wherein when the voice data is processed by adopting an NVOC coding and decoding format corresponding to the QCI Index N1, the size of the voice data is 48 bits, and the corresponding GBR is 8 Kbps; when the voice data is processed by using the NVOC coding and decoding format corresponding to QCI Index N2, the size of the voice data is 72 bits, and the corresponding GBR is 16 Kbps.
Therefore, through the steps, when point-to-point voice service is carried out in the LTE network, the voice information can be encoded by adopting an NVOC voice coding and decoding format, or the voice information is processed by adopting the NVOC voice coding and decoding format and an FEC processing mode, and the data volume of the encoded voice information is smaller; and transmits voice information by adopting a non-IP transmission mode. Therefore, the terminals which are all positioned in the LTE network can use 48-Bit coded communication and also can use 72-Bit coded communication; when communicating between a terminal of a PDT network and a terminal of an LTE network, a coding format of 72 bits is used for communication.
In an optional implementation manner, the connection request is a group establishment request, where the group establishment request represents a terminal request to perform a group voice service with each terminal of at least one other terminal; step 203, comprising the steps of:
step 2031b, when it is determined that the terminal and each of the at least one other terminal support the NVOC voice codec format according to the voice codec format information of the terminal and the voice codec format information of each of the at least one other terminal, determining that the index value is the second index value or the third index value, and configuring a network parameter set.
In this embodiment, specifically, if the terminal initiates the group establishment request for performing the group voice service in step 201, then in step 203, the network device may determine that the Index value corresponding to the NVOC voice codec format is the second Index value or the third Index value, for example, the second Index value is QCI Index 1, and the third Index value is QCI Index N2, and configure the network parameter set. Therefore, through the steps, when the group voice service is carried out in the LTE network, the voice information can be coded by adopting the NVOC voice coding and decoding format, and the data volume of the coded voice information is smaller; and transmits voice information by adopting a non-IP transmission mode.
Fig. 4 is a schematic structural diagram of a voice transmission apparatus according to an embodiment of the present invention, and as shown in fig. 4, the apparatus according to the embodiment may include:
the first receiving module 31 is configured to receive voice information sent by a terminal and an identifier of at least one other terminal, where the voice information is encoded in an NVOC voice encoding and decoding format;
the first sending module 32 is configured to send, in the LTE network, the voice information to the other terminal corresponding to the identifier of each of the at least one other terminal in a non-IP transmission manner, where a minimum RB allocated to the voice information is 1.
The voice transmission apparatus of the present embodiment can execute a voice transmission method provided by the present invention, which has similar implementation principles and is not described herein again.
In this embodiment, the voice information sent by the terminal and the identifier of at least one other terminal are received, where the voice information is encoded by using an NVOC voice encoding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1. The voice information is coded by adopting an NVOC voice coding and decoding format, so that the data volume of the coded voice information is smaller; and the voice information is transmitted by adopting a non-IP transmission mode, so that the situation that an IP head is added into the voice information when the voice information is transmitted by adopting a VoIP technology is avoided, and the voice information does not have the IP head, so that the data volume of the coded voice information is further reduced. Therefore, when voice transmission is performed in the LTE network, the data volume of the coded voice information transmitted in the LTE network is small, so that the RB allocated to the voice data by the LTE network is small, and thus the limitation that the RB allocated to the voice information in the LTE network standard is 2 in the minimum can be broken through.
Fig. 5 is a schematic structural diagram of another voice transmission apparatus according to an embodiment of the present invention, and based on the embodiment shown in fig. 4, as shown in fig. 5, the apparatus according to the embodiment further includes:
a second receiving module 41, configured to receive, before the first receiving module 31 receives the voice information sent by the terminal and the identifier of the at least one other terminal, a connection request sent by the terminal and voice codec format information of the terminal, where the connection request indicates that the terminal requests to perform voice communication with the at least one other terminal, and the voice codec format information includes at least one voice codec format supported by the terminal;
a determining module 42, configured to determine, according to the voice encoding and decoding format information of different terminals included in the preset voice encoding and decoding format set, the voice encoding and decoding format information of each other terminal in the at least one other terminal;
a configuration module 43, configured to configure a network parameter set when it is determined that the terminal and each of the at least one other terminal support the NVOC voice codec format according to the voice codec format information of the terminal and the voice codec format information of each of the at least one other terminal, where the network parameter set includes a parameter supporting the NVOC voice codec format;
a second sending module 44, configured to send the network parameter set to the terminal and each of the at least one other terminal, so that the terminal and each of the at least one other terminal determine to encode the voice information in the NVOC voice codec format according to the network parameter set.
The network parameter set comprises at least one of the following parameters: and index values, service types, QCI, GBR, TTI and ARP corresponding to the NVOC voice coding and decoding format.
The configuration module 43 is specifically configured to:
selecting an NVOC voice coding and decoding format and acquiring a channel state;
according to the NVOC voice coding and decoding format and the channel state, at least one of the following parameters is allocated: QCI, GBR, TTI, ARP.
In an optional implementation manner, the connection request is a voice call request, and the voice call request represents that the terminal requests to perform a point-to-point voice service with one other terminal; the configuration module 43 includes:
the obtaining submodule is used for obtaining a first network type of a network used by the terminal and a second network type of a network used by one other terminal when the terminal and each other terminal in the at least one other terminal support the NVOC voice coding and decoding format according to the voice coding and decoding format information of the terminal and the voice coding and decoding format information of each other terminal in the at least one other terminal;
the first configuration submodule is used for determining that the index value is the first index value and configuring a network parameter set if the first network type is determined to be an LTE network and the second network type is an police digital trunking PDT network or the first network type is determined to be a PDT network and the second network type is determined to be an LTE network;
and the second configuration sub-module is configured to determine that the index value is a second index value and configure a network parameter set if the first network type and the second network type are both LTE networks, where the first index value indicates that the uncoded voice information is encoded by using an NVOC voice coding and decoding format and is processed by using a vocoder forward error correction FEC processing manner, and the second index value indicates that the uncoded voice information is encoded by using an NVOC voice coding and decoding format.
In an optional implementation manner, the connection request is a group establishment request, and the group establishment request represents that the terminal requests to perform a group voice service with each of the at least one other terminal.
The first sending module 32 provided in this embodiment includes:
a determining submodule 321, configured to determine, in the LTE network, that the RB allocated to the voice information is minimum 1;
the sending sub-module 322 is configured to send the voice information to the air interface in the LTE network, so that the air interface sends the voice information to the other terminal corresponding to the identifier of each of the at least one other terminal in a non-IP transmission manner.
The speech transmission apparatus of the embodiment can perform another speech transmission method provided by the embodiment of the invention, and the implementation principles thereof are similar, and are not described herein again.
In this embodiment, the voice information sent by the terminal and the identifier of at least one other terminal are received, where the voice information is encoded by using an NVOC voice encoding and decoding format; in the LTE network, the voice information is transmitted to other terminals corresponding to the identifier of each other terminal in the identifiers of at least one other terminal by adopting a non-IP transmission mode, wherein the RB allocated to the voice information is minimum 1. The voice information is coded by adopting an NVOC voice coding and decoding format, so that the data volume of the coded voice information is smaller; and the voice information is transmitted by adopting a non-IP transmission mode, so that the situation that an IP head is added into the voice information when the voice information is transmitted by adopting a VoIP technology is avoided, and the voice information does not have the IP head, so that the data volume of the coded voice information is further reduced. Therefore, when voice transmission is performed in the LTE network, the data volume of the coded voice information transmitted in the LTE network is small, so that the RB allocated to the voice data by the LTE network is small, and thus the limitation that the RB allocated to the voice information in the LTE network standard is 2 in the minimum can be broken through. And when the terminal initiates the point-to-point voice service or the group voice service, the terminal reports the supported voice coding and decoding format information to the network equipment, wherein the terminal supporting the NVOC voice coding and decoding format sends the support capability information indicating the NVOC voice coding format to the network equipment. Under the condition that the network side determines that the terminal and other terminals called by the terminal both support the NVOC voice coding mode, the network equipment configures corresponding parameters; and the network equipment sends the configured network parameter set to the terminal to be communicated, and then the terminal and each other terminal determine that voice communication needs to be carried out in an NVOC voice coding mode. Moreover, under the condition of introducing the NVOC coding and decoding mode, because the data volume of the voice coding is small, no matter 48 bits or 72 bits, one RB can be used for bearing voice data, so that the limitation of an LTE network is broken through, scheduling and allocation of one RB are supported, and the purposes of improving the power spectral density and the coverage radius are achieved.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method for voice transmission, comprising:
receiving voice information sent by a terminal and an identifier of at least one other terminal, wherein the voice information is coded by adopting a narrowband vocoder NVOC voice coding and decoding format;
in a Long Term Evolution (LTE) network, transmitting the voice information to other terminals corresponding to the identifier of each other terminal in the identifiers of the at least one other terminal by adopting a non-network protocol (IP) transmission mode, wherein a physical Resource Block (RB) allocated to the voice information is minimum 1;
before the voice information sent by the receiving terminal and the identification of at least one other terminal, the method further comprises the following steps:
receiving a connection request sent by the terminal and voice coding and decoding format information of the terminal, wherein the connection request represents that the terminal request carries out voice communication with at least one other terminal, the voice coding and decoding format information comprises at least one voice coding and decoding format supported by the terminal, the connection request is a voice call request, and the voice call request represents that the terminal request carries out point-to-point voice service with one other terminal;
determining the voice coding and decoding format information of each other terminal in the at least one other terminal according to the voice coding and decoding format information of different terminals included in a preset voice coding and decoding format set;
when determining that the terminal and each of the at least one other terminal support the NVOC voice codec format according to the voice codec format information of the terminal and the voice codec format information of each of the at least one other terminal, configuring a network parameter set, wherein the network parameter set includes parameters supporting the NVOC voice codec format;
sending the network parameter set to the terminal and each other terminal in the at least one other terminal, so that the terminal and each other terminal in the at least one other terminal determine to encode the voice information by adopting an NVOC voice coding and decoding format according to the network parameter set;
before the configuring the set of network parameters, further comprising:
acquiring a first network type of a network used by the terminal and a second network type of the network used by the other terminal;
accordingly, the configuring the network parameter set includes:
if the first network type is determined to be an LTE network and the second network type is a police digital trunking PDT network, or the first network type is determined to be a PDT network and the second network type is determined to be an LTE network, determining an index value to be a first index value, and configuring the network parameter set;
if the first network type and the second network type are both determined to be LTE networks, determining the index value to be a second index value, and configuring the network parameter set, where the first index value indicates that the un-encoded voice information is encoded in the NVOC voice coding and decoding format and that the un-encoded voice information is processed in a vocoder forward error correction FEC processing manner, and the second index value indicates that the un-encoded voice information is encoded in the NVOC voice coding and decoding format.
2. The method of claim 1, wherein the set of network parameters comprises at least one of the following parameters: index value corresponding to NVOC voice codec format, service type, quality of service QCI, guaranteed bit rate GBR, transmission time interval TTI, allocation and retention priority ARP.
3. The method of claim 1, wherein the configuring the set of network parameters comprises:
selecting the NVOC voice coding and decoding format and acquiring a channel state;
according to the NVOC voice coding and decoding format and the channel state, at least one of the following parameters is allocated: QCI, GBR, TTI, ARP.
4. The method of claim 1, wherein the connection request is a group setup request, and wherein the group setup request characterizes the terminal requesting a group voice service with each of the at least one other terminal.
5. The method according to any one of claims 1 to 4, wherein said transmitting the voice message to the other terminal corresponding to the identifier of each other terminal in the identifier of the at least one other terminal by using a non-IP transmission method comprises:
in an LTE network, determining that the RB allocated for the voice information is minimum 1;
and in the LTE network, sending the voice information to an air interface so that the air interface sends the voice information to other terminals corresponding to the identifier of each other terminal in the identifiers of the at least one other terminal in a non-IP transmission mode.
6. A voice transmission apparatus, comprising:
the first receiving module is used for receiving voice information sent by a terminal and an identifier of at least one other terminal, wherein the voice information is coded by adopting an NVOC voice coding and decoding format;
a first sending module, configured to send, in an LTE network, the voice information to other terminals corresponding to an identifier of each of the at least one other terminal in a non-IP transmission manner, where an RB allocated to the voice information is minimum 1;
a second receiving module, configured to receive, before the first receiving module receives the voice information sent by the terminal and an identifier of at least one other terminal, a connection request sent by the terminal and voice codec format information of the terminal, where the connection request indicates that the terminal requests to perform voice communication with the at least one other terminal, the voice codec format information includes at least one voice codec format supported by the terminal, the connection request is a voice call request, and the voice call request indicates that the terminal requests to perform a point-to-point voice service with one other terminal;
a determining module, configured to determine, according to the voice coding and decoding format information of the different terminals included in the preset voice coding and decoding format set, the voice coding and decoding format information of each of the at least one other terminal;
a configuration module, configured to configure a network parameter set when it is determined that the terminal and each of the at least one other terminal support the NVOC voice codec format according to the voice codec format information of the terminal and the voice codec format information of each of the at least one other terminal, where the network parameter set includes a parameter supporting the NVOC voice codec format;
a second sending module, configured to send the network parameter set to the terminal and each of the at least one other terminal, so that the terminal and each of the at least one other terminal determine to encode voice information in an NVOC voice codec format according to the network parameter set;
the configuration module includes:
the obtaining submodule is used for obtaining a first network type of a network used by the terminal and a second network type of the network used by the other terminal when the terminal and each other terminal in the at least one other terminal support the NVOC voice coding and decoding format according to the voice coding and decoding format information of the terminal and the voice coding and decoding format information of each other terminal in the at least one other terminal;
a first configuration sub-module, configured to determine that an index value is a first index value and configure the network parameter set if it is determined that the first network type is an LTE network and the second network type is a police digital trunking PDT network, or it is determined that the first network type is a PDT network and the second network type is an LTE network;
a second configuration sub-module, configured to determine that the index value is a second index value and configure the network parameter set if it is determined that the first network type and the second network type are both LTE networks, where the first index value indicates that the uncoded voice information is encoded using the NVOC voice codec format and that the uncoded voice information is processed using a vocoder forward error correction, FEC, and the second index value indicates that the uncoded voice information is encoded using the NVOC voice codec format.
7. The apparatus of claim 6, wherein the set of network parameters comprises at least one of the following parameters: and index values, service types, QCI, GBR, TTI and ARP corresponding to the NVOC voice coding and decoding format.
8. The apparatus of claim 6, wherein the configuration module is specifically configured to:
selecting the NVOC voice coding and decoding format and acquiring a channel state;
according to the NVOC voice coding and decoding format and the channel state, at least one of the following parameters is allocated: QCI, GBR, TTI, ARP.
9. The apparatus of claim 6, wherein the connection request is a group setup request, and wherein the group setup request characterizes the terminal requesting a group voice service with each of the at least one other terminal.
10. The apparatus according to any of claims 6-9, wherein the first sending module comprises:
a determining submodule, configured to determine, in an LTE network, that the RB allocated to the voice information is minimum 1;
and the sending submodule is used for sending the voice information to an air interface in an LTE network so that the air interface sends the voice information to other terminals corresponding to the identifier of each other terminal in the identifiers of the at least one other terminal in a non-IP transmission mode.
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| CN112087781B (en) * | 2019-06-13 | 2023-01-06 | 成都鼎桥通信技术有限公司 | Method and equipment for determining voice coding mode in LTE (Long term evolution) system |
| CN112866994B (en) * | 2019-11-11 | 2023-03-31 | 成都鼎桥通信技术有限公司 | Encryption communication method and system for carrying narrowband speech coding by LTE (Long term evolution) |
| CN112996053B (en) * | 2019-12-16 | 2023-04-18 | 成都鼎桥通信技术有限公司 | Method, device and equipment for reordering voice data packets |
| CN113038532B (en) * | 2019-12-24 | 2023-01-31 | 成都鼎桥通信技术有限公司 | Data transmission method, device, equipment, system and storage medium |
| CN113784338B (en) * | 2020-05-21 | 2023-05-26 | 成都鼎桥通信技术有限公司 | Voice service bearing method in multi-service broadband cluster system |
| CN113726719A (en) * | 2020-05-25 | 2021-11-30 | 成都鼎桥通信技术有限公司 | Voice data transmission method, device, equipment and storage medium |
| CN113438609B (en) * | 2021-08-27 | 2021-11-19 | 深圳市晨讯物联科技有限公司 | Method, system, device and storage medium for scheduling communication with integration of width and width |
| CN114500167B (en) * | 2021-12-24 | 2023-11-24 | 海能达通信股份有限公司 | Information processing method and device, electronic equipment and storage medium |
| CN114760273A (en) * | 2022-04-14 | 2022-07-15 | 深圳震有科技股份有限公司 | Voice forwarding method, system, server and storage medium |
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