CN111245729B - Method for digital-analog hybrid IP interconnection of transfer platform - Google Patents
Method for digital-analog hybrid IP interconnection of transfer platform Download PDFInfo
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- CN111245729B CN111245729B CN202010015187.8A CN202010015187A CN111245729B CN 111245729 B CN111245729 B CN 111245729B CN 202010015187 A CN202010015187 A CN 202010015187A CN 111245729 B CN111245729 B CN 111245729B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
Abstract
The invention provides a mixed IP interconnection method of a transfer platform digital-analog, which comprises the following steps: (1) the transfer platform adopts a unified registration method to register the master node in the IP interconnection system; (2) when the master node receives the registration request of the transfer platform, the master node informs the transfer platform that the registration is successful; (3) after receiving the request of successful registration, the relay station initiates a message to inquire a network routing table to the master node for the generation of subsequent service logic; (4) the master node broadcasts the network routing table belonging to the transfer platform in a timing way; (5) after the relay station receives and establishes the network routing table, the subsequent service forwarding can be carried out automatically according to the network routing table without the participation of a master node. The invention can not only realize the interconnection and intercommunication of the analog channel and the digital channel, but also save the bandwidth of the IP network as much as possible and realize the low-consumption and high-efficiency transmission of the network.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for interconnecting digital-analog mixed IP of a transfer platform.
Background
In recent years, private network communication has entered the digital era, and a series of digital private network standards including DMR and PDT standards are widely used in the market. The digital mode can better utilize frequency spectrum resources and improve the frequency spectrum utilization rate; meanwhile, the digital interphone has the function of correcting errors in the IDAS system in a digital mode, and compared with an analog interphone, the digital interphone can achieve better voice audio quality in a signal environment with a wider range, the received audio noise can be less, and the sound is clearer. Therefore, the digital mode is widely popularized and used in the market.
However, the analog systems and analog interphones that have been used in large quantities are used in large quantities and cannot be completely replaced by digital modes at a time, so that the analog systems and the analog interphones also continue to play an extremely important role in application scenes. Therefore, the new digital system interphone and the original analog system interphone need to be effectively interconnected and intercommunicated, and the analog/digital system can be in smooth transition.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a method for interconnecting the digital-analog mixed IP of the relay station, so as to overcome the defects in the prior art.
In order to achieve the above object, the present invention provides a method for interconnecting a relay station digital-analog hybrid IP, wherein relay stations in a plurality of areas are connected to a master node and a standby master node, the relay station in each area can be accessed to a digital relay station or an analog relay station, the master node is connected to a network management system through a network to form an IP interconnection system, and the method for interconnecting the relay station digital-analog hybrid IP using the IP interconnection system comprises the following steps: (1) the transfer platform adopts a unified registration method to register master nodes in the IP interconnection system, and comprises a digital transfer platform and an analog transfer platform; the registration method adopts register signaling; (2) when the master node receives the registration request of the transfer platform, the transfer platform is informed of successful registration; (3) after receiving the request of successful registration, the relay station initiates a message to inquire a network routing table to the master node for the generation of subsequent service logic; (4) the master node broadcasts the network routing table belonging to the transfer platform in a timing way; (5) after the transfer platform receives and establishes the network routing table, the subsequent service forwarding can be carried out automatically according to the network routing table without the participation of a master node.
By the technical scheme, the method can not only realize interconnection and intercommunication of the analog channel and the digital channel, but also save IP network bandwidth as much as possible, and realize low-consumption and high-efficiency transmission of the network.
As a further description of the relay station digital-analog hybrid IP interconnection method provided by the present invention, preferably, the digital relay station and the analog relay station serve as a peer to apply for a network routing table to the master node, and the digital relay station and the analog relay station send keep-alive heartbeat packets during the network, and the master node will update the network routing table to each peer according to the keep-alive heartbeat packets at regular time.
By the technical scheme, in the connection mode of the link layer, a unified link establishment mode is adopted no matter a digital relay station or an analog relay station, and the two modes are not different.
As a further description of the digital-analog hybrid IP interconnection method of the relay station of the present invention, preferably, the digital relay station employs a double-slot access method; the analog relay station accesses 1 time slot or 2 time slots of the digital relay station through configuration.
By the technical scheme, interconnection and intercommunication of the analog channel and the digital channel are realized.
As a further description of the digital-analog hybrid IP interconnection method of the relay station of the present invention, preferably, the digital relay station uses an AMBE + + vocoder to perform air interface transmission to access an IP network.
Through the technical scheme, the AMBE + + vocoder is a vocoder in the field of private network communication, the AMBE + + vocoder is a low-bit-rate and high-performance voice compression coding method based on a multi-band excitation voice model, and the AMBE + + vocoder can keep excellent voice synthesis naturalness under the condition of low bit rate and has good capability of resisting background noise. In the transmission process, the speed of the voice compression coding mode is only 2.4kbps, the transmission consumption on the line is greatly saved, and the transmission bandwidth of IP interconnection is reduced.
As a further description of the relay station digital-analog hybrid IP interconnection method of the present invention, preferably, the analog relay station compresses the analog voice signal by AMBE coding, and then accesses the IP network for voice transmission.
By the technical scheme, the AMBE codes enable the compressed voice to be only 2.4kbps and far less than the voice transmission rate of 64kbps of PCM, so that the voice transmission load of an IP network of an analog relay station is greatly reduced, and the coding mode of a digital relay station (DMR) is unified.
As a further description of the digital-analog hybrid IP interconnection method of the relay station of the present invention, preferably, when the analog relay station accesses the analog channel number, the analog relay station codes the number of the analog channel number, and translates all the mobile station access calls received by the same analog relay station into the number coded by the analog relay station and sends the number to the network, so that other relay stations can know which network node the call is accessed by.
By the technical scheme, the problems that after digital-analog intercommunication, a digital relay station (DMR) is accessed with a number, and the access of an analog relay station is in a direct access mode and does not carry the number are solved, and the digital access of an analog system without a DTMF function is possible.
The invention has the following beneficial effects:
1. the invention can not only realize the interconnection and intercommunication of the analog channel and the digital channel, but also save the bandwidth of the IP network as much as possible, and realize the low consumption and high efficiency transmission of the network.
2. The digital transit station of the invention adopts AMBE vocoder to greatly save the transmission consumption on line and reduce the transmission bandwidth of IP interconnection; the analog relay station adopts AMBE coding to compress analog voice signals, then accesses an IP network to carry out voice transmission, greatly reduces the voice transmission load of the IP network of the analog relay station, and unifies the coding mode with digital relay station (DMR).
3. When the analog relay station is accessed by analog channel numbers, the analog relay station codes the number, all the hand station access calls received by the same analog relay station are translated into the number coded by the analog relay station and sent to the network, thereby solving the problems that the access of a digital relay station (DMR) has a number after digital-analog intercommunication, the access of the analog relay station is a direct access mode and does not carry a number, and realizing the possibility of the digital access of an analog system without DTMF function.
Drawings
Fig. 1 is a transfer platform digital-analog hybrid IP interconnection topology diagram of the present invention.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, fig. 1 is a relay station digital-analog hybrid IP interconnection topological graph of the present invention, in which relay stations in multiple areas are all connected to a master node and a standby master node, a digital relay station can be accessed in the relay station of each area, and an analog relay station can also be accessed, the master node is connected to a network management system through a network to form an IP interconnection system, and the relay station digital-analog hybrid IP interconnection method using the IP interconnection system includes the following steps:
(1) the transfer platform adopts a unified registration method to register master nodes in the IP interconnection system, and comprises a digital transfer platform and an analog transfer platform; the registration method employs register signaling.
(2) And when the master node receives the registration request of the transfer platform, the master node informs the transfer platform of successful registration.
(3) After receiving the request of successful registration, the relay station initiates a message to inquire the network routing table to the master node for the generation of subsequent service logic.
(4) The master node broadcasts out the network routing table belonging to the relay station at regular time.
(5) After the relay station receives and establishes the network routing table, the subsequent service forwarding can be carried out automatically according to the network routing table without the participation of a master node.
In the link layer connection mode, a unified link establishment mode is adopted no matter the digital relay station or the analog relay station, the digital relay station and the analog relay station are not different from each other, the digital relay station and the analog relay station serve as a peer to apply for a network routing table to a master node, the digital relay station and the analog relay station send keep-alive heartbeat packets during the network, and the master node can update the network routing table to each peer at regular time according to the keep-alive heartbeat packets. The digital transfer platform adopts a double-time slot access method; the analog relay station accesses 1 time slot or 2 time slots of the digital relay station through configuration. Therefore, the interconnection and intercommunication of the analog channel and the digital channel are realized, the IP network bandwidth can be saved as much as possible, and the low-consumption and high-efficiency transmission of the network is realized.
In the media layer connection mode, the digital relay station adopts an AMBE + + vocoder to carry out air interface transmission so as to access an IP network. The AMBE + + vocoder is a vocoder in the field of private network communication, and the AMBE + + vocoder is a low-bit-rate and high-performance voice compression coding method based on a multi-band excitation voice model, can keep excellent voice synthesis naturalness under the condition of low bit rate, and simultaneously has good capability of resisting background noise. In the transmission process, the speed of the voice compression coding mode is only 2.4kbps, the compressed voice is only 2.4kbps and is far less than the voice transmission speed of 64kbps of PCM, the transmission consumption on the line is greatly saved, and the transmission bandwidth of IP interconnection is reduced.
In the media layer connection mode, the air interface transmission of the analog relay station adopts a PCM coding transmission mode. Although this type of encoding can restore voice information to the maximum, the transmission bandwidth occupied by this type of encoding is large, requiring a bandwidth of 64kbps, and even if the a/U law for telephone compression encoding is adopted, requiring a transmission bandwidth of 32kbps for transmission, the bandwidth consumption is large. Therefore, by taking the practice of digital relay station (DMR) as a reference, the analog relay station compresses the analog voice signal by AMBE coding, and then accesses the IP network for voice transmission, and since AMBE coding makes the compressed voice only 2.4kbps, which is much less than the 64kbps voice transmission rate of PCM, the voice transmission load of the IP network of the analog relay station is greatly reduced, and the coding mode of digital relay station (DMR) is unified.
In the analog channel number access method, under a digital mode, an access IP interconnection system of each terminal carries a terminal number; in the analog mode, the access of the terminal is a direct access mode and does not carry a number. Therefore, after digital-to-analog interworking is adopted, access forwarding of a digital relay node (DMR) requires a number, and therefore access of an analog relay node causes a problem here. The traditional analog number access means is that a terminal carries a number in voice through DTMF, the number is transmitted to a relay station, the DTMF is decoded by the relay station, and the number is identified and then forwarded to an IP network. However, in many cases, the analog mobile station does not support DTMF transmission, so if such mobile station is used in the digital-to-analog IP interconnection system, other technical means must be adopted to complete the number access of the analog mobile station. In the invention, the analog relay station codes the number, all the hand-set access calls received by the same analog relay station are translated into the number coded by the analog relay station and sent to the network, so that other relay stations can know which network node the call is accessed from, and the realization of digital access of the analog system without DTMF function is possible.
The invention provides a method for the hybrid IP interconnection of a DMR digital relay station and an analog relay station. By adopting the IP interconnection mode, the interconnection and intercommunication of the analog channel and the digital channel can be realized, the IP network bandwidth can be saved as much as possible, and the low-consumption and high-efficiency transmission of the network can be realized.
It should be noted that the above summary and the detailed description are intended to demonstrate the practical application of the technical solutions provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the invention. The scope of the invention is defined by the appended claims.
Claims (3)
1. A mixed IP interconnection method of the analog and digital of the transfer platform, characterized by that, the transfer platform of multiple areas is connected to a master node and spare master node, can insert the digital transfer platform in the transfer platform of each area, can insert the analog transfer platform too, the digital transfer platform adopts the method of the double-slot access, the analog transfer platform inserts 1 time slot or 2 time slots of the digital transfer platform through disposing, the digital transfer platform uses AMBE + + vocoder to transmit and insert IP network on the air interface, the analog transfer platform uses AMBE to encode and compress the analog speech signal, then insert IP network, carry on the voice transmission, the master node is connected to the network management system through the network, form an IP interconnection system, the mixed IP interconnection method of the analog and digital of the transfer platform of the Internet system of utilizing the IP includes the following steps:
(1) the transfer platform adopts a unified registration method to register master nodes in the IP interconnection system, and comprises a digital transfer platform and an analog transfer platform; the registration method adopts register signaling;
(2) when the master node receives the registration request of the transfer platform, the master node informs the transfer platform that the registration is successful;
(3) after receiving the request of successful registration, the relay station initiates a message to inquire a network routing table to the master node for the generation of subsequent service logic;
(4) the master node broadcasts the network routing table belonging to the transfer platform in a timing way;
(5) after the relay station receives and establishes the network routing table, the subsequent service forwarding can be carried out automatically according to the network routing table without the participation of a master node.
2. The method for realizing the mixed IP interconnection of the digital-analog of the relay station as claimed in claim 1, wherein the digital relay station and the analog relay station serve as a peer to apply for a network routing table from the master node, the digital relay station and the analog relay station send keep-alive heartbeat packets during the network, and the master node can update the network routing table to each peer according to the keep-alive heartbeat packets at regular time.
3. The method of claim 1, wherein the analog relay station codes the analog relay station with a number when the analog channel number is accessed, and translates all the hand-set access calls received by the same analog relay station into the coded number of the analog relay station, and sends the translated call to the network, so that other relay stations can know which network node the call is accessed.
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