CN114449371A - OMA intercom system based on Cat1 - Google Patents
OMA intercom system based on Cat1 Download PDFInfo
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- CN114449371A CN114449371A CN202210142921.6A CN202210142921A CN114449371A CN 114449371 A CN114449371 A CN 114449371A CN 202210142921 A CN202210142921 A CN 202210142921A CN 114449371 A CN114449371 A CN 114449371A
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- 101100494773 Caenorhabditis elegans ctl-2 gene Proteins 0.000 title claims abstract description 51
- 101100112369 Fasciola hepatica Cat-1 gene Proteins 0.000 title claims abstract description 51
- 101100005271 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) cat-1 gene Proteins 0.000 title claims abstract description 51
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 230000011664 signaling Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 abstract description 2
- 101100392078 Caenorhabditis elegans cat-4 gene Proteins 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000001413 cellular effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The invention discloses an OMA (OMA ma) intercom system based on Cat1, which comprises a Cat1 module, a key module, a display module, a voice acquisition module, a broadcasting module, an SIM (subscriber identity module), a power supply module and an antenna module, wherein the key module is arranged on the Cat1 module; the Cat1 module runs an RTOS real-time operating system and runs a protocol stack based on OMA standard; the key module is used for interaction of a man-machine system; the display module is used for displaying a system UI interface; the voice acquisition module is used for acquiring system voice; the broadcasting module is used for voice broadcasting; the SIM module is used for accessing the system to the 4G network of the operator; the power supply module adopts a portable lithium battery for system power supply; the antenna module is used for system wireless signal processing. The scheme can realize the talkback function based on the OMA standard based on the Cat1 technology, has the characteristics of low cost and long endurance time, and can effectively solve the problems in the prior art.
Description
Technical Field
The invention relates to a communication technology, in particular to an intercom communication technology.
Background
As early as the development of mobile data services, public network intercom services have entered the view of the basic telecommunications operators. In 2004, the Open Mobile Alliance (OMA for short) organization proposed To establish a Push-To-Talk over Cellular (PoC) standard based on a Mobile Cellular data network, and released an OMA PoC V1.0 technical specification in 6 months of 2005. In order to find a new service application for 3G TD-SCDMA, the china mobile as the core member of OMA organization first looks at PoC service, and the first PoC service platform based on OMA standard was deployed in 2006. With the maturity of platform technology and operation mode, 4G mobile networks are popularized, the terminal industry chain is gradually improved, and the public network talkback industry is coming with unprecedented development opportunities.
The technology of Cat4 is basically adopted by terminals based on an OMA intercom system in the market at present. The technology is generally cut based on a mobile phone scheme, or is realized by the mobile phone scheme, the operation is an Android or linux system, the equipment cost is high, and the short endurance time becomes the bottleneck of the rapid public network talkback technology.
Therefore, how to reduce the cost and power consumption of the OMA intercom system is an urgent problem to be solved in the field.
Disclosure of Invention
Aiming at the problems of the existing OMA public network talkback terminal based on Cat4 technology, a new public network talkback technical scheme is needed.
Therefore, the problem to be solved by the present invention is to provide an OMA intercom system based on Cat1 technology to overcome the drawbacks of the prior art.
In order to solve the above problems, the OMA intercom system based on Cat1 provided by the invention comprises
The system comprises a Cat1 module, a Cat1 module, a real-time operating system (RTOS) and an SIP (session initiation protocol) signaling and RTP (real-time protocol) voice protocol based on the OMA standard, wherein the Cat1 module runs an RTOS (real-time operating system);
the key module is used for interaction of a man-machine system;
the display module is used for displaying a system UI;
the voice acquisition module is used for acquiring system voice;
the broadcasting module is used for voice broadcasting;
the SIM module is used for accessing the system to the 4G network of the operator;
the power supply module is used for supplying power to the system;
the antenna module is used for system wireless signal processing.
Further, the Cat1 module comprises a communication CPU based on an ARM architecture, a 16M RAM memory, and a 16M ROM memory.
Further, the talkback signaling in the Cat1 module is based on the SIP protocol of the OMA standard.
Further, the voice media in the Cat1 module is an RTP protocol based on OMA standard.
Further, the voice acquisition module is a microphone module.
Furthermore, the OMA intercom system further comprises a positioning module, and the positioning module is used for collecting real-time positioning data of the system.
The scheme provided by the invention realizes that the low-power ARM chip is adopted to operate the RTOS real-time operating system, the required memory is very little, the cost and the power consumption are effectively reduced, and the method is more suitable for the public network talkback terminal.
The scheme provided by the invention can solve the pain of high power consumption and high cost of the talkback terminal based on the Cat4 technology, and can enable the public network talkback technology to be popularized more quickly.
Drawings
The invention is further described below in conjunction with the appended drawings and the detailed description.
Fig. 1 is a system block diagram of an OMA intercom system in an example of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Aiming at the problems of the existing OMA intercom system terminal adopting Cat4 technology, the invention abandons Cat4 technology, innovatively constructs a corresponding OMA intercom system based on Cat1 technology, realizes the adoption of an ARM chip with low power consumption and the running of an RTOS real-time operating system to form the OMA intercom system, effectively reduces the cost, has lower power consumption and is more suitable for the public network intercom terminal.
Referring to fig. 1, an exemplary configuration of an OMA intercom system based on Cat1 technology according to the present invention is shown.
As can be seen from the figure, the OMA intercom system 100 is mainly formed by matching a key module 110, an LCD display module 120, a microphone module 130, a speaker module 140, a Cat1 module 150, a SIM module 160, a positioning module 170, a power supply module 180, and an antenna module 190.
The Cat1 module 150 in the system serves as a data processing center of the entire OMA intercom system 100, runs an RTOS real-time operating system, runs a protocol stack based on the OMA standard, and realizes the functions of voice acquisition, encoding, playing and transmission.
In the protocol stack, the signaling part of the protocol stack adopts SIP signaling protocol, and the voice part of the protocol stack adopts RTP voice protocol.
Specifically, the Cat1 module 150 specifically includes an ARM-based CPU, a 16M RAM, and a 16M ROM, and runs an SIP signaling and an RTP voice protocol stack based on OMA standard based on an RTOS real-time operating system. The talk-back signaling is based on the SIP protocol of OMA standard, and the voice media is based on the RTP protocol of OMA standard.
The key module 110 in the system is in data connection with the Cat1 module 150 and is matched with the Cat1 module 150 to realize the man-machine interaction of the intercom system.
Specifically, the key module 110 includes a PTT key, a volume adjustment key, a function key, a set key, an up/down selection key, and a power switch key.
The LCD display module 120 in the system is in data connection with the Cat1 module 150 and is matched with the Cat1 module 150 to realize UI display of the system.
Specifically, the LCD display module 120 implements a custom system interface based on the LVGL library.
The microphone module 130 in the system is in data connection with the Cat1 module 150 and is matched with the Cat1 module 150 to realize system voice collection.
Specifically, the microphone module 130 may perform PCM acquisition on the speech at a sampling rate of 8K/16 BIT.
The speaker module 140 in the system is in data connection with the Cat1 module 150, and is matched with the Cat1 module 150, so as to realize the playing of the voice packet received from the network.
The specific configuration of the horn module 140 may be determined according to actual requirements, and is not limited herein.
The SIM module 160 in the system is in data connection with the Cat1 module 150, and cooperates with the Cat1 module 150 to realize system access to the 4G network of the operator.
The specific structure of the SIM module 160 may be determined according to actual requirements, and is not limited herein.
The specific structure of the positioning module 170 may be determined according to actual requirements, and is not limited herein.
The power supply module 180 in the system is in data connection with the Cat1 module 150 and is matched with the Cat1 module 150 to realize system power supply.
For the power supply module 180 specifically including a battery and a charging module, which are connected and matched with each other, the battery is preferably a portable lithium battery.
The antenna module 190 in the system is in data connection with the Cat1 module 150, and is matched with the Cat1 module 150, so that the system wireless signal processing is realized, and the system is accessed to a 4G base station.
The OMA intercom system constructed based on the scheme can form a corresponding intercom terminal, and intercom based on the Cat1 technology is realized through the cooperation of the Cat1 module 150 and other modules in the system.
Specifically, when the terminal system is started, the Cat1 module in the terminal creates a registration thread to initiate REGISTER registration to the platform, and logs in the intercom system.
When the login is successful, the Cat1 module sends an INVITE message to access the predefined channel.
When the PTT is pressed to speak through the key module, a Cat1 module in the terminal sends a TBCP protocol to apply for the right to speak; after the right to speak application succeeds, the Cat1 module compresses the collected PCM data through the microphone module, encodes the PCM data into a voice packet in an AMR format, and sends the voice packet to the public network talkback platform through an RTP protocol, and other terminals in the same channel can receive real-time voice sent by the system.
On the contrary, when the co-channel other people are accepted to speak, after the TBCP other people speak information is accepted from the platform, the speaker module is opened, and the voice packet accepted from the platform is decoded and played by the system.
To further illustrate the operation of the OMA intercom system 100 provided by the present solution, the following is illustrated by an application example.
The OMA intercom system 100 formed by the scheme of the invention forms a corresponding OMA intercom terminal when in application.
In operation, firstly, the 4G card is inserted into the SIM module 160 in the terminal, and the system is started through the power supply module 180; at this time, the Cat1 module 150 in the terminal loads the system and runs the talkback protocol stack program to access the public network talkback system, and loads the system UI interface through the LCD display module 120. Next, a channel to be accessed is selected through the key module 110.
When a PTT key is pressed to initiate a call, the microphone module 130 starts to collect input audio data, the Cat1 module 150 compresses the collected PCM data into voice data in an AMR format, the voice data is connected with a 4G network through the antenna module 190, and the voice data is transmitted to a public network talkback platform, so that a voice talkback sending function is realized.
When the OMA intercom system 100 accepts the call, the AMR voice packet received by the network is decoded into PCM data and played out through the speaker module 140, thereby implementing the voice intercom receiving function.
Meanwhile, according to the position feedback interval time set by the system, the positioning module 170 collects the GPS data at regular time and transmits the position data to the talkback platform, thereby realizing the real-time positioning function.
As can be seen from the above, the OMA intercom system scheme provided in this example can realize access to a public network intercom platform based on the OMA standard to realize a public network intercom function, and can realize intercommunication with a terminal of the conventional Cat4, and the system has lower cost, longer duration, and can promote popularization of the public network intercom technology more quickly.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An OMA intercom system based on Cat1, comprising
The system comprises a Cat1 module, a Cat1 module, a real-time operating system (RTOS) and an SIP (session initiation protocol) signaling and RTP (real-time protocol) voice protocol based on the OMA standard, wherein the Cat1 module runs an RTOS (real-time operating system);
the key module is used for interaction of a man-machine system;
the display module is used for displaying a system UI;
the voice acquisition module is used for acquiring system voice;
the broadcasting module is used for voice broadcasting;
the SIM module is used for accessing the system to the 4G network of the operator;
the power supply module is used for supplying power to the system;
the antenna module is used for system wireless signal processing.
2. The OMA intercom system as in claim 1, wherein said Cat1 module comprises an ARM architecture based communications CPU, 16M RAM memory, 16M ROM storage.
3. An OMA intercom system as in claim 1 or 2, wherein the intercom signaling in said Cat1 module is an SIP protocol based on the OMA standard.
4. An OMA intercom system as in claim 1 or 2, wherein the voice media in said Cat1 module is an RTP protocol based on the OMA standard.
5. An OMA intercom system as in claim 1 wherein said voice capture module is a microphone module.
6. The OMA intercom system of claim 1, further comprising a location module for system real-time location data acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210142921.6A CN114449371A (en) | 2022-02-16 | 2022-02-16 | OMA intercom system based on Cat1 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210142921.6A CN114449371A (en) | 2022-02-16 | 2022-02-16 | OMA intercom system based on Cat1 |
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