CN101553047A - ROIP radio station transmission terminal device and transmission method - Google Patents
ROIP radio station transmission terminal device and transmission method Download PDFInfo
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- CN101553047A CN101553047A CNA2009100264507A CN200910026450A CN101553047A CN 101553047 A CN101553047 A CN 101553047A CN A2009100264507 A CNA2009100264507 A CN A2009100264507A CN 200910026450 A CN200910026450 A CN 200910026450A CN 101553047 A CN101553047 A CN 101553047A
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Abstract
The invention discloses an ROIP radio station transmission terminal device and a transmission method. In the terminal device, one group of radio stations are connected with one corresponding group of ROIP terminals; one group of ROIP terminals are connected with an ROIP control center by an IP network; the control center carries out control conduction on one group of radio stations through the IP network; one group of radio stations are mutually connected through the IP network; and one group of normal broadcasting stations communicate with one corresponding group of radio stations by point-to-point. In the invention, the radio stations use an IP addressing technique and take the IP network as a carrier to realize the real-time transmission of the communications among the radio stations, thereby forming a complete radio IP network. The invention has high maneuverability and the radio stations are flexibly coordinated, thus really realizing that one control center can dispatch a plurality of stations of origin and one station of origin can be used by a plurality of control centers, thereby exerting the entire efficiency of a communication entity and a conduction entity.
Description
Technical field
The present invention relates to the RTTS of communicating by letter between a kind of radio station, particularly relate to a kind of IP of utilization addressing technique and realize the ROIP radio station transmission terminal equipment and the transmission method of communicating by letter between the radio station with IP network as transport vehicle.
Background technology
Radio communication is a kind of important civil and military means of communication, and radio station is widely used in many fields such as transoceanic communication, emergency communication and military communication.In a lot of application scenarioss, distance is far away between control centre and the radio station, and this just need operate remote wireless communication device by client cables.Traditional solution is the radio station that adopts the band remote-control box, and wireless swticher is promptly arranged, and realizes the strange land of radio station is controlled by wired remote control.There is following shortcoming in this remote control radio:
(1) must provide special-purpose remote-control channel, mobility is poor;
(2) remote control mode is difficult unified, coordinates dumb between the radio station;
(3) the radio station price of band remote-control box is higher, and radio station of a most remote control of remote-control box.
Network technology and Development of Multimedia Technology have promoted the synthesization of the communication technology, digitized development, make to realize that on the single network platform multiple business such as voice, data, image become possibility.Under this background, the VOIP technology that combines network technology and multimedia technology has obtained developing rapidly.After wireless communication networks had wireless bridge interconnected through VOIP, each Wireless Telecom Equipment is isolated operation no longer, but can interconnect.
Summary of the invention
In order to overcome the shortcoming of traditional remote control radio, the purpose of this invention is to provide a kind of ROIP radio station's transmission terminal equipment and transmission method, this transmission method utilization IP addressing technique, with the network is support, utilize IP network to realize the RTTS of communicating by letter between the radio station as transport vehicle, be ROIP (Radi over IP) technology, realize the automatic control equipment between the transceiver station, form have high mobility, radio communication platform that capability to resist destruction is strong.As long as network configuration is reasonable, even the inefficacy in single radio station, the instruction of control centre still can be launched by other radio station on the network.Accomplish that really a control centre can dispatch a plurality of sending stations, a receving station can be used by a plurality of control centres.Thereby the overall efficiency of performance communication entity and commander's entity.
The objective of the invention is to be achieved through the following technical solutions:
A kind of ROIP radio station transmission terminal equipment, it is characterized in that: this terminal equipment comprises radio station, ROIP terminal, IP network, ROIP control centre and conventional radio station, one group of radio station is connected with corresponding one group of ROIP terminal, and one group of ROIP terminal is connected with ROIP control centre by IP network; Control centre controls commander by IP network to one group of radio station; Interconnected between one group of radio station by IP network; One group of conventional radio station and corresponding one group of radio station carry out point-to-point communication.
Among the present invention, the combination of the system protocol of described ROIP terminal is RTP/UDP/SIP/IP.
Described one group of conventional radio station and corresponding one group of radio station carry out point-to-point communication by traditional approach.
Described ROIP terminal comprises that described ROIP terminal comprises microphone, loud speaker, serial port module, network, audio processing modules, ARM core board and Network Interface Module, and microphone, loud speaker are connected with the ARM core board by audio processing modules; Network is connected with the ARM core board by Network Interface Module; Serial port module is connected with the ARM core board.
The transmission method of a kind of ROIP radio station transmission terminal equipment is characterized in that this transmission method may further comprise the steps:
F1: beginning;
F2: system initialization;
F3: the bag that judges whether to receive automatic network or control centre; Do not receive the bag of automatic network, then carry out F11 or F12;
F4: receive the bag of automatic network, the ZDMA control register that starts DMA receives data;
F5: what receive is control data; Then carry out F8;
F6: receive voice data; Then carry out F9;
F7: receive message data; Then carry out F10;
F8: receive behind the control data to the radio station sending controling instruction;
F9: receive voice data, the transmission of speech is carried out in the control radio station;
F10: receive message data, the transmission of message is carried out in the control radio station;
F11: receive voice data from the radio station;
F12: receive message data from the radio station;
F13: audio frequency or message data are carried out the UDP packing;
F14: judge whether to send audio frequency or packet; Do not send and then get back to F3;
F15: the ZDMA control register that starts DMA sends bag to network or control centre.
Among the present invention, control centre controls commander by IP network to the radio station in netting, have between the radio station of ROIP terminal by the network interconnection, and accept the scheduling of control centre, point-to-point communication is then carried out by traditional approach and the radio station that has the ROIP terminal in the conventional radio station that does not have ROIP, thereby forms a complete Wireless IP network.
The present invention uses the IP addressing technique, relies on the system of network as transport vehicle, comprises the terminal equipment of the two or more at least ROIP of having functions, connects by an IP network.Each cordless communication network remote control station of system is made of radio station, ROIP terminal equipment, ROIP control centre, cordless communication network remote control software and ROIP system protocol, and described radio station comprises short-wave radio set and ultrashort wave radio set; Under network environment, work, radio station is connected with network; Cordless communication network remote control software is finished concrete application function, comprises the management of transfering to other localities, signal transmission control, data interaction etc., adopts the multitask method for designing, carries out network data processing, voice data processing and serial data to handle; The ROIP system protocol adopts the combination of RTP/UDP/SIP/IP agreement, and data and command transfer adopt udp protocol, and Internet protocol adopts the conversation initialized protocol SIP of system, and realtime transmission protocol RTP is used to realize transport layer functionality.
(1) ROIP terminal equipment
ROIP terminal equipment of the present invention is made up of ARM core board, audio processing modules, Network Interface Module, serial interface circuit and corresponding software.
A. described ROIP terminal does not change the original structure in radio station in principle in hardware designs as far as possible, adopts the serial ports control mode to realize waiting control to the frequency modulation in radio station is tuning, and audio signal is respectively by the Mic and the Phones input and output of radio station.
B. terminal adopt the ARM9 embedded system and with Linux as operating system, realize the terminal required function based on this.Adopting S3C2410 to carry out DSP as core board on specific implementation handles.
C. audio processing modules is finished functions such as voice typing, encoding and decoding and speech play.Core board S3C2410 is connected with audio control chip by the IIS bus, realizes the audio processing modules function.The pattern of IIS bus transmitting and receiving data adopts direct memory access (DMA) pattern.
D. mixed-media network modules mixed-media is used to finish network service, carries out the transmission and the reception of network data.Mixed-media network modules mixed-media is by the parsing and the package of ARM control carrying out network service, realization address resolution protocol, Internet Control Message Protocol (ICMP), IP agreement, User Datagram Protoco (UDP) agreements such as (UDP).
E. serial interface circuit is finished processing for the level conversion of serial data stream and data format, judges the start bit and the position of rest of serial data and is finished functions such as extraction to data and check digit.Need level transferring chip to carry out level conversion between radio station and the core board chip.
F. described ROIP terminal not only will realize procotol, also will manage ancillary equipment, finishes concrete application function, and the transmission of signal comprises control signal, message signals and voice signal.
G. because the terminal system function is various, the software frame programming of described invention design is procedure division that several co-operating tasks are finished, and each task has the flow process of oneself, can exchange data mutually between the task.
H. whole procedure is made up of a major cycle and a plurality of task, at first carries out initialization after the system start-up and enters major cycle then, and major cycle is called several tasks and finished necessary operations, the distribution of task is not a preemptive type, but distributes by the time.The main task of terminal system comprises that network data processing, voice data are handled and serial data is handled.The division of task mainly is to carry out at these 3 parts.
I. serial ports partly uses the inner integrated UART controller of S3c2410 to realize and go here and there conversion, and serial ports partly is divided into a task and finishes; Network data processing and voice data processing all are divided into two tasks and finish.
J. network data processing and voice data are handled and are all used the DMA transmission means, to reduce taking CPU.
(2) ROIP system protocol
Described invention is carried out real-time service transmission what do not provide that service quality guarantees on the internet, selected protocol suite requires to effectively reduce network delay, improve Chu's transmission quality of network, system protocol comprises Internet protocol, host-host protocol and RTP.
The a.ROIP system protocol adopts the combination of RTP/UDP/SIP/IP agreement, promptly by IP network, in conjunction with the multiplication practicality of Session Initiation Protocol, by the high efficiency of UDP, uses Real-time Transport Protocol to strengthen the purpose that reaches real-time Transmission.
B. the overall framework of system transport protocol is: data and command transfer all adopt udp protocol, send and receive to adopt same port, the data type of transmission to comprise 3 kinds of voice, data and orders, and wherein reliable UDP connection is adopted in Ming Ling transmission.
C. on ROIP system transmissions layer protocol is handled, adopting the combination of UDP, RTP and rtcp protocol to replace Transmission Control Protocol, is a kind of combination of protocols that quality assurance is arranged and can connect fast.
D. Internet protocol adopts the SIP of conversation initialized protocol system of IETF, and it lays particular emphasis on IP phone as an application on the internet, more is partial to practicality, has increased signaling and qos requirement, and is more flexible to the support of supplementary service, set up call out simple.
E. for realizing the real-time Transmission of voice data, the host-host protocol of ROIP requires less transmission delay, and Transmission Control Protocol is because its retransmission mechanism and the requirement of congestion control mechanism incompatibility real-time Transmission, and the header of Transmission Control Protocol is big in addition, toggle speed is slow, therefore is not suitable as the agreement of ROIP.And udp protocol can be used as the host-host protocol of ROIP owing to its terseness.
F. described system adopts udp protocol and RTP (RTP) and RTCP (RTCP Real-time Transport Control Protocol) shared to realize the function of transport layer.The voice data piece that is generated by the sound card module is encapsulated in the RTP packets of information, and each RTP packets of information is encapsulated in the UDP message section, and then is encapsulated in the IP packet and sends, and the RTCP bag utilizes the RTP bag to send after passage is set up.
Described ROIP usefulness UDP, RTP of system and rtcp protocol combination replace single Transmission Control Protocol, are a kind of combination of protocols that quality assurance is arranged and can connect fast, have following advantage:
1. can provide timestamp.RTP can provide timestamp, for example adjustment of speech coding in the management of system, and aspect such as control compensation of delay etc., all the time-delay that need provide with timestamp is as a reference.
2. shorten and set up link time.The time of connecting is the UDP connect hours, has shortened the connect hours under the situation that service guarantees are provided equally.
3. congestion control mechanism and retransmission mechanism have been saved.The setting of these two kinds of mechanism all is provided with in order to reduce packet loss, but it is a cost to sacrifice the transmission time, and this has exactly run counter to real-time Transmission and has required promptly to allow a small amount of packet loss and shorten time-delay as far as possible.
(3) ROIP control system
Because the existence of network delay, the ROIP system must guarantee the stability of The whole control system.Described invention adopts the method that buffer queue is set to carry out system's control, this method be by be provided with buffer queue the time-delay of the control signal that receives by uncertain become definite.
A. concrete enforcement is finished by a viewer and a controller.Use viewer to come network delay is observed, and, the controlled quentity controlled variable of controller is set according to the estimated value of delaying time based on estimations of delaying time of the amount of delay in past.
B. system transmits the ROIP system voice according to grouping time-delay predicted value, packet jitter size predicted value and grouping packet loss and carries out QoS control.The selection on control opportunity is adopted and is set a constant value C, controls when receiving terminal is received C packets of voice.This method is simple and practical, timely response situation, and shortcoming is a underaction, the value of constant C can be established can overcome this shortcoming for a short time for this reason.
The ROIP terminal is a kind of data circuit switching equipment in essence.Radio station is as a kind of important communication equipment, all plays an important role in civilian military.Yet for the radio station of certain power, its communication range is limited, and this point has greatly restricted the scheduling and the use in radio station.Compared with prior art, coordinate between mobility height of the present invention, the radio station flexibly, radio station and network are coupled together, be widely used in various fields such as remote scheduling, intelligent multipoint control, and radio station also is fused in the digital information interaction platform, improved the emergency communication ability.
The present invention can reach following function:
1. all function of voice communication that have traditional VOIP;
2. diversified radio station controlled function and radio station defencive function are provided comprehensively;
3. be fit to communication in the net, low to network requirement, have good fail safe and reliability;
4. possess voice and number transmission control system concurrent processing function;
5. be applicable to emergency communication system.
Description of drawings
Fig. 1 is the institutional framework schematic diagram of ROIP system.
Fig. 2 is the structural representation of ROIP terminal.
Fig. 3 is the flow chart of ROIP radio station transmission method.
Specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of a kind of ROIP of the present invention radio station transmission terminal equipment.Terminal equipment comprises that radio station's (HF short-wave radio set/UHF ultrashort wave radio set) 1, ROIP terminal 2,4, one groups of three radio stations of IP network 3 and ROIP control centre 1, one group of three ROIP terminal 2 are connected by IP network 3 with control centre 4.Under the command scheduling of ROIP control centre 4, the computer in the IP network 3 can pass through Remote, controls each radio station.For transferring voice and control signal on IP network 3, require to have at least the ROIP terminal 2 of the two or more ROIP of having functions.One end of ROIP terminal 2 links to each other with radio station 1, and the other end is connected to IP network 3.The conventional radio station 5 that is connected with ROIP terminal 2 not, by and radio station 1 between Radio Link, communicating to connect between other equipment in foundation and network and the net, thus realize no longer isolated operation of each Radio Station, but can interconnect.
Fig. 2 is the structural representation of ROIP terminal 2.Among Fig. 2, microphone, loud speaker 21, serial port module 22, network 23, audio processing modules 24, ARM core board 25, Network Interface Module 26.
In Fig. 2, audio signal is respectively by the microphone and loud speaker 21 input and output of radio station.
In Fig. 2, ARM core board 25 is finished the various controls and the processing capacity of terminal, and in the present embodiment, the ARM9 series embedded system that core board adopts is that 16/32 risc microcontroller S3C2410 of Samsung is ARM920T, (SuSE) Linux OS.Be connected the reliable SO-DIMM200 connector form that adopts between core board and peripheral circuit.
In Fig. 2, serial port module 22 is mainly finished the processing of the level conversion of serial data stream and data format, is judged the start bit and the position of rest of serial data and finish functions such as extraction to data and check digit.The inner integrated UART controller of core board S3C2420 realized and the string conversion, but outside need provides the conversion between CMOS/TTL level and the RS232.Because radio station adopts the RS232 interface standard mostly, but the high-low level signal of RS232-C standard definition is different fully with the defined high-low level of LVTTL circuit of S3C2420 system, therefore need level conversion.In the present embodiment, adopt the MAX3232 chip to realize level conversion.
In Fig. 2, audio processing modules 24 is mainly finished the functions such as broadcast of typing, encoding and decoding and the sound of sound.In the present embodiment, the Inter-IC Sound of core board S3C2410 is the codec that the IIS bus is used to realize 8/16 stereo audio, it supports IIS bus data form, can transmit and receive data simultaneously, also can be at the middle either-or that transmits and receive data.
In Fig. 2, network 23 is by the data interaction between Network Interface Module 26 realizations and the control centre 4.Network Interface Module 26 is used to realize network service, carries out the transmission and the reception of network data.Network Interface Module is realized the parsing and the package of agreements such as address resolution protocol, Internet Control Message Protocol, IP agreement, User Datagram Protoco (UDP) UDP by ARM core board control carrying out network service.In an embodiment of the present invention, the CS8900 chip that adopts U.S. Cirrus company is as ethernet control chip, and control program only need configure internal register, can realize network service.
Fig. 3 is the flow chart of ROIP radio station transmission method.Mainly finish the transmission of signal, comprise control signal, message signals and voice signal.At first carry out initialization after the system start-up, enter major cycle then, major cycle is called several tasks successively and is finished necessary operations, and the distribution of task is not a preemptive type, but distributes by the time.After system finished initialization, whether the ROIP terminal judges received the grouping of automatic network or control centre; If receive, then start the direct memory access transmission mode and receive message, handle according to the type of message branch task that receives then, if what receive is control data, then the radio station is controlled, if what receive is voice data by serial ports, then deliver to the radio station and send voice signal, if what receive is message data, then deliver to the radio station and send message, then ROIP receives the data from the radio station; If do not receive the bag of automatic network or control centre, then change the data of reception over to from the radio station.When receiving from the audio frequency in radio station or message data, data are carried out the UDP packing, judge whether to send according to actual conditions to network, if send, then start direct memory access and send bag; If do not send, then get back to the network accepting state.Idiographic flow is as follows:
F1: beginning;
F2: system initialization;
F3: the bag that judges whether to receive automatic network or control centre; Do not receive the bag of automatic network, then carry out F11 or F12;
F4: receive the bag of automatic network, the ZDMA control register that starts DMA receives data;
F5: what receive is control data;
F6: receive voice data;
F7: receive message data;
F8: receive behind the control data to the radio station sending controling instruction;
F9: receive voice data, the transmission of speech is carried out in the control radio station;
F10: receive message data, the transmission of message is carried out in the control radio station;
F11: receive voice data from the radio station;
F12: receive message data from the radio station;
F13: audio frequency or message data are carried out the UDP packing;
F14: judge whether to send audio frequency or packet; Do not send and then get back to F3;
F15: the ZDMA control register that starts DMA sends the ZDMA bag to network or control centre.
After finishing, transmission comes back to F3.
Network data processing and voice data are handled and are all adopted DMA (direct memory access) transmission means, and the use of DMA can effectively reduce taking CPU.The receiving course of ethernet data frame is exactly the read-write pointer register of controller by inquiry network card chip inside, judges whether that new Frame arrives.When new Frame arrived, the ARM core board was kept at it in controller ram buffer by the Frame among the RAM of network card chip far-end dma operation reception network interface card inside.The process of transmitting of ethernet data frame is at first by network card chip far-end dma operation, to be delivered in the network interface card internal RAM in the ready data slave controller buffering area, start the local dma operation of network card chip then, to be delivered in the network interface card internal RAM in the ready data slave controller buffering area, start the local dma operation of Network Interface Module then, Frame is sent to Ethernet; The IIS controller of S3C2410 is equally also supported the DMA transmission of voice data.
Machine of the present invention couples together radio station and network, is widely used in various fields such as remote scheduling, intelligent multipoint control, and radio station also is fused in the digital information interaction platform, has improved the emergency communication ability.The present invention can provide diversified radio station controlled function and radio station defencive function; Be fit to communication in the net, low to network requirement, have good fail safe and reliability; Possess voice and number transmission control system concurrent processing function; Be applicable to emergency communication system.
Claims (6)
1, a kind of ROIP radio station transmission terminal equipment, it is characterized in that: this terminal equipment comprises radio station (1), ROIP terminal (2), IP network (3), ROIP control centre (4) and conventional radio station (5), one group of radio station (1) is connected with corresponding one group of ROIP terminal (2), and one group of ROIP terminal (2) is connected with ROIP control centre (4) by IP network (3); Control centre (4) controls commander by IP network (3) to one group of radio station (1); Interconnected between one group of radio station (1) by IP network (3); Point-to-point communication is carried out with corresponding one group of radio station (1) in one group of conventional radio station (5).
2, a kind of ROIP according to claim 1 radio station transmission terminal equipment, it is characterized in that: the system protocol combination of described ROIP terminal (2) is RTP/UDP/SIP/IP.
3, a kind of ROIP according to claim 1 radio station transmission terminal equipment, it is characterized in that: described one group of conventional radio station (5) is carried out point-to-point communication with corresponding one group of radio station (1) by traditional approach.
4, a kind of ROIP according to claim 1 radio station transmission terminal equipment, it is characterized in that: described ROIP terminal (2) comprises microphone, loud speaker (21), serial port module (22), network (23), audio processing modules (24), ARM core board (25) and Network Interface Module (26), and microphone, loud speaker (21) are connected with ARM core board (25) by audio processing modules (24); Network (23) is connected with ARM core board (25) by Network Interface Module (26); Serial port module (22) is connected with ARM core board (25).
5, a kind of ROIP according to claim 1 radio station transmission terminal equipment, it is characterized in that: described radio station (1) comprises short-wave radio set and ultrashort wave radio set.
6, the transmission method of a kind of ROIP radio station transmission terminal equipment is characterized in that this transmission method may further comprise the steps:
F1: beginning;
F2: system initialization;
F3: the bag that judges whether to receive automatic network or control centre; Do not receive the bag of automatic network, then carry out F11 or F12;
F4: receive the bag of automatic network, the ZDMA control register that starts DMA receives data;
F5: what receive is control data; Then carry out F8;
F6: receive voice data; Then carry out F9;
F7: receive message data; Then carry out F10;
F8: receive behind the control data to the radio station sending controling instruction;
F9: receive voice data, the transmission of speech is carried out in the control radio station;
F10: receive message data, the transmission of message is carried out in the control radio station;
F11: receive voice data from the radio station;
F12: receive message data from the radio station;
F13: audio frequency or message data are carried out the UDP packing;
F14: judge whether to send audio frequency or packet; Do not send and then get back to F3;
F15: the ZDMA control register that starts DMA sends bag to network or control centre.
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| CNA2009100264507A CN101553047A (en) | 2009-04-23 | 2009-04-23 | ROIP radio station transmission terminal device and transmission method |
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| CNA2009100264507A CN101553047A (en) | 2009-04-23 | 2009-04-23 | ROIP radio station transmission terminal device and transmission method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079505A (en) * | 2014-07-08 | 2014-10-01 | 北京东进航空科技股份有限公司 | Radio station dispatching system and method |
| CN105491049A (en) * | 2015-12-11 | 2016-04-13 | 中国人民解放军国防信息学院 | SIP-based call enhancement control method |
| CN105700457A (en) * | 2016-02-23 | 2016-06-22 | 上海昂泰兰捷尔信息科技股份有限公司 | Method for intelligent control and automatic monitoring of short-wave communication network remote control cables |
| CN106533878A (en) * | 2016-12-05 | 2017-03-22 | 中国人民解放军镇江船艇学院 | Ultrashort wave simulation radio station based on semi-physical simulation and realization method thereof |
-
2009
- 2009-04-23 CN CNA2009100264507A patent/CN101553047A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079505A (en) * | 2014-07-08 | 2014-10-01 | 北京东进航空科技股份有限公司 | Radio station dispatching system and method |
| CN105491049A (en) * | 2015-12-11 | 2016-04-13 | 中国人民解放军国防信息学院 | SIP-based call enhancement control method |
| CN105491049B (en) * | 2015-12-11 | 2018-08-10 | 中国人民解放军国防信息学院 | Calling based on SIP enhances control method |
| CN105700457A (en) * | 2016-02-23 | 2016-06-22 | 上海昂泰兰捷尔信息科技股份有限公司 | Method for intelligent control and automatic monitoring of short-wave communication network remote control cables |
| CN106533878A (en) * | 2016-12-05 | 2017-03-22 | 中国人民解放军镇江船艇学院 | Ultrashort wave simulation radio station based on semi-physical simulation and realization method thereof |
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Open date: 20091007 |