CN102547487B - Private network talkback method and private network talkback transmission system based on wireless local area network - Google Patents
Private network talkback method and private network talkback transmission system based on wireless local area network Download PDFInfo
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Abstract
The invention discloses a private network talkback method and a private network talkback transmission system based on a wireless local area network. The system consists of a wireless fidelity (WIFI) terminal, a WIFI access analysis processor, an outside transmission system, a comprehensive switchboard and a private network user manager. By the invention, the private network talkback transmission system, which has characteristics of high speed communication connection, real-time performance and high quality of voice, enables a priority level to perform absolute and forced prior communication, and has functions of general calling, group calling and announcing, can be provided for professional users on the basis of equipment and the outside transmission system which are provided by the network structure of the wireless local area network and under the condition of maintaining a superior function of data receiving and transmission of the wireless local area network, and the communication connection between a private talkback user and a public network communication user can be realized as required, so that the requirement of private network talkback transmission can be met.
Description
Technical field
The present invention is private network talkback method and private network talkback transmission system, belongs to the relay transmission field of radio communication.
Background technology
Existing wireless local area network technology has more by force and data access service function flexibly, therefore WLAN (wireless local area network) is widely used, for meeting the intercommunication business demand in reality, at wireless local, also realized the transfer function to wireless talkback on the net, in the intercommunication transmission system realizing on existing wireless local area network technology, more common is WIFI intercom system, H.323 or SIP host-host protocol WIFI intercom system mainly adopts at data link layer and transport network layer is, to meet point-to-point intercommunication business and multi-conference business, in transmission, adopted in essence comparatively complicated wireless access authentication, transmission data contention mechanism and IP transmission mode, therefore in the speed of communication connection, the reliability of call, real-time and speech quality all can not be compared with wireless private network intercommunication technology, and in User Priority application aspect, although introduced enhancement mode distributed collaboration (EDCF) concept in 802.11e agreement, for the user of different business provides different priority service, also just considered preferential on the access probability of data link Access Layer of high-priority users, for guaranteeing the technology of wireless QoS, by control, wait for that the time window size of competition realizes QOS and ensures, thereby reach for different priority service users and get different QoS services, this priority application belongs to communication sound quality priority control technology, rather than communication connection priority technology, can not guarantee that high-priority users connects first priority in the mandatory connection communication of low priority user in access and exchange, in practical application, often need to build the requirement that WLAN (wireless local area network) meets Various types of data access, in the environment of existing wireless local area network (LAN), under equipment installation and outer line transmission system condition restriction, be not easy to build again private network talkback transmission system, but in the work of actual production dispatching communication, need to there is communication connection speed fast, real-time and speech quality are high, level of priority has absolute mandatory priority communication, and generally call, the private network talkback transmission system function of the functional requirement of group calling and notice, and when needed, realize the communication connection of private network talkback user and public network communication user, and the wireless intercom system realizing on existing wireless local area network technology can not meet above-mentioned private network talkback transmission demand.
Summary of the invention
In view of the foregoing and problem, the object of the present invention is to provide a kind of private network talkback method and private network talkback transmission system, on the equipment and outer line transmission system basis that can provide in existing wireless lan network structure, keep under the existing data access of WLAN (wireless local area network) and the advantage function condition of transmission, for professional user, to realize communication connection speed fast, real-time and speech quality are high, level of priority has absolute mandatory priority communication, and generally call, group calling, the private network talkback transmission system of the function of noticing, and when needed, can realize the communication connection of private network talkback user and public network communication user, to meet the demand of private network talkback transmission.
For achieving the above object, the present invention introduces a kind of private network talkback method, include WLAN (wireless local area network), a plurality of WIFI terminals, a plurality of WIFI connect into analysis processors, outer line transmission system, integrated switch and private network User Manager, it is characterized in that when choice for use private network talkback mode of operation, physical layer in WIFI protocol transmission, in the WIFI wireless access channel of data link layer and network layer, mark off a plurality of for transmitting the private network talkback wireless channel of private network talkback numeric data code, WIFI terminal is directly communicated with access by this private network talkback wireless channel with WIFI connect into analysis processor under private network talkback pattern, circuit transmission and circuit switching channel transfer private network talkback numeric data code are set in local net network, and selection adopts following method of work:
(1) each WIFI terminal and WIFI connect into analysis processor arrange identical code division multiple access address code on corresponding private network talkback wireless channel, the code division multiple access address code different to different private network talkback radio channel setting, be in different private network talkback radio channel setting and have different code division multiple access address codes, but to same private network talkback wireless channel, in all WIFI terminals and WIFI connect into analysis processor, identical code division multiple access address code is set, to WIFI terminal, the wireless transmission on private network talkback wireless channel is the broadcast communication method of multicast on same channel to WIFI connect into analysis processor, (WIFI connect into analysis processor to a plurality of WIFI terminals the wireless transmission on same channel, when WIFI connect into analysis processor is during in emission state, all WIFI terminals all receive this and transmit), to WIFI connect into analysis processor, the wireless transmission on private network talkback wireless channel is that multiple spot (is that a plurality of WIFI terminals adopt the wireless transmission method of time-division transmission on same channel to a WIFI connect into analysis processor to the time-division shared channel transmission communication means of any on same channel to WIFI terminal, when some WIFI terminals are when carrying out wireless transmission to a WIFI connect into analysis processor, other WIFI terminal is in accepting state), each WIFI terminal is arranged to private network user code, priority code, group's code, channel code, WIFI terminal is shown the operating state of private network talkback wireless channel and when initiating private network talkback, is selected idle private network talkback wireless channel, WIFI terminal arranges and uses private network talkback wireless channel under private network talkback mode of operation, according to WIFI host-host protocol, private network talkback numeric data code encapsulated and be transferred to WIFI connect into analysis processor (by the private network talkback wireless channel arranging, in the packet that encapsulates and transmit by wireless channel, include the Internet transmission data that realize other business and the private network talkback numeric data code of realizing private network talkback function under WIFI host-host protocol), in described private network talkback numeric data code, include speech digit code and private network talkback function code, in private network talkback function code, include private network talkback identification code, private network user code, priority code, group's code, type of call code, channel code, line disconnection code, in type of call code, include individual calling code, generally call code, group calling code, notice code, insert and call out code, the private network user code that contains Called Subscriber in individual calling code, fixed line extension set code, public network communication user code, public network user communications codes is public network fixed telephone subscriber number and Mobile Directory Number, WIFI terminal is differentiated the private network talkback numeric data code of receiving, when the related content in the private network talkback function code that private network talkback numeric data code comprises is corresponding with this WIFI terminal, this WIFI terminal just gives respective handling, as: the group calling code of this WIFI terminal is consistent with the group calling code in the private network talkback numeric data code of receiving, this WIFI terminal could be done decoding output to speech digit code wherein,
(2) in private network User Manager, store the address code of each integrated switch, WIFI connect into analysis processor, and corresponding with physical address code (that is: MAC, hardware address code, link address code) separately, in private network User Manager, be provided with user code, priority code, group's code, the channel code of each WIFI terminal, and corresponding with the physical address code of WIFI terminal; Private network User Manager by outer line transmission system to address code corresponding with physical address code is separately set in each integrated switch and WIFI connect into analysis processor, in each integrated switch and WIFI connect into analysis processor, be provided with private network user code, priority code, group's code, the channel code of each WIFI terminal, and corresponding with the physical address code of WIFI terminal, in private network User Manager, can store and by integrated switch and outer line transmission system, the accepting state priority code in each WIFI connect into analysis processor is set;
(3) each WIFI connect into analysis processor sends to private network User Manager by the address code of the private network user code of the WIFI terminal of access and the WIFI connect into analysis processor that accesses by integrated switch and outer line transmission system, private network User Manager sends to each integrated switch storage by the address code of the private network user code of the WIFI terminal of receiving and the address code of WIFI connect into analysis processor accessing and the integrated switch at this WIFI connect into analysis processor place, private network User Manager carries out user grouping and authority setting to the WIFI terminal of each access WIFI connect into analysis processor, storage and demonstration, private network User Manager receives and records the operating state of each WIFI connect into analysis processor, accepting state priority code, the private network talkback function code of address code and access user, and indicated and shown in corresponding geographical position figure and tables of data, and according to the address code of the WIFI connect into analysis processor of each access WIFI terminal, the address code of the integrated switch that WIFI connect into analysis processor connects, the address code of each interconnective integrated switch, connection request while calling out according to private network talkback function code and transmission switching path, establishment generates private network call connection routing table, call function and corresponding private network call connection routing table that the private network talkback function code of the WIFI terminal of each access WIFI connect into analysis processor is indicated send to each integrated switch storage, the transit route of each relevant integrated switch when private network call connection routing table has indicated the calling of carrying out private network talkback function code, according to the user code of call connection and type of call, the transit route that private network call connection routing table indicates can exchange and realize communication connection in an integrated switch, also can be for realizing communication connection by a plurality of relevant integrated switch exchanges, private network User Manager is produced the private network call connection routing table of corresponding individual calling and sends to relevant integrated switch by outer line transmission system and integrated switch when processing individual calling carries out exchange connection,
(4) WIFI connect into analysis processor is differentiated the WIFI terminal of access according to the channel code of storage, private network talkback numeric data code to the identical WIFI terminal of channel code is accessed, and by each private network user code of access, access channel quality indication code, the address code of this access WIFI connect into analysis processor sends to each integrated switch by outer line transmission system and private network User Manager is stored, WIFI connect into analysis processor sends to the WIFI terminal of access store and show by the WIFI network transmission protocol transmission channel service condition of private network talkback wireless channel, the available free operating state of operating state on the private network talkback wireless channel of WIFI connect into analysis processor, receive operating state and transmitting operating state, wherein: its idle state is: wireless channel and wire transmission channel are all in accepting state, reception operating state is: the private network talkback numeric data code that wireless channel is received forwards by private network talkback wireless channel and outside line transmission system sends, transmitting operating state is: the private network talkback numeric data code receiving by outer line transmission system is launched by wireless channel, WIFI connect into analysis processor is according to relatively determining the operating state of private network talkback wireless channel is selected the access channel quality indication code of each access WIFI terminal and accepting state priority code, the access channel quality indication code of the WIFI terminal of other that receive by private network talkback wireless channel that the access channel quality indication code of the WIFI terminal of access is better than receiving by outer line transmission system when this WIFI connect into analysis processor, this WIFI connect into analysis processor enters reception operating state to this private network talkback wireless channel, otherwise enter transmitting operating state, if to access channel quality indication code is relatively identical, but the accepting state priority code of this WIFI connect into analysis processor is higher than other WIFI connect into analysis processor, this WIFI connect into analysis processor enters reception operating state to this private network talkback wireless channel, otherwise enter transmitting operating state, WIFI connect into analysis processor is differentiated the transmission of the Internet for other application data in the WIFI wireless access data of receiving by wireless channel and exports along separate routes by different ports from private network talkback numeric data code, private network talkback numeric data code arranges and selects corresponding port output according to channel code, WIFI connect into analysis processor is by the Internet transmission data for other application, the address code of the access WIFI connect into analysis processor of private network talkback numeric data code and correspondence adopts multichannel multiplexing method to carry out channel multiplexing processing and obtains multiplexed signals, and by outer line transmission system, multiplexed signals is transferred to integrated switch, above-mentioned wireless channel is wherein the private network talkback wireless channel arranging in WIFI wireless access device, wire transmission channel is the data transmit-receive passage of the external line transmission system of WIFI wireless access device, and access channel quality indication code represents the comprehensive transmission quality indication code of field intensity intensity, the error rate, code shake and the time delay index of wireless access channel,
(5) integrated switch adopts demultiplexing method to give obtaining respectively Internet transmission data and the private network talkback numeric data code for other application after demultiplexing the multiplexed signals of sending here by outer line transmission system, the transmission of the Internet for other application data that obtain are input to Internet host-host protocol port and exchange processing (comprising there being packet switching according to Internet host-host protocol, frame relay switching and cell switching mode), the private network talkback numeric data code obtaining is input to circuit switching port, the calling requirement that integrated switch is set according to the private network talkback function code in private network talkback numeric data code, the access address of each private network user code of storage and the path of private network call connection routing table appointment are carried out circuit switching (or being called circuit switched) to private network talkback numeric data code and are connected, and select to adopt following methods to implement exchange connection:
1. according to priority code, set and communicate circuit switching connection, the force priority exchange that gives that priority is high connects; So-called force priority exchange,, in the occupied situation in interchange channel, the interchange channel of other low priority users of forced interruption, preferentially exchanges connection to high-priority users;
2. according to channel code, set and select corresponding telecommunication circuit passage to exchange connection;
3. according to individual calling code, select corresponding circuit switching passage to connect, in private network User Manager, inquire the address code of the WIFI connect into analysis processor of called WIFI terminal, the address code of integrated switch that this WIFI connect into analysis processor connects, in private network User Manager, generate corresponding private network individual calling connection route table and send to relevant integrated switch to carry out exchange and connect; While containing public network communication user code in individual calling code, by integrated switch, be connected with public network telephone network and send corresponding public network fixed telephone subscriber number and public network Mobile Directory Number carries out call connection; Due to the quantity of WIFI terminal and move at random, the routing table quantity of individual calling is more, therefore adopts when individual calling occurs by is generated and send to relevant integrated switch at private network User Manager temporarily and carries out and exchange connection; Public network telephone network (or being called public telephone network) is conventional public fixed-line telephone network and public mobile telephone network;
4. according to the setting of generally calling code in type of call code, all users and user's access address code are communicated to circuit switching tandem;
5. according to the address code of the access address code of the setting of the group calling code in type of call code and affiliated group user and relevant integrated switch, the user of affiliated group is communicated to circuit switching tandem;
6. according to the setting of the notice code in type of call code, all circuit switching ports are communicated to circuit switching tandem, and when master exhales telex network, do not access other users' calling and call;
7. according to the setting of the insertion calling code in type of call code, existing communication is carried out to circuit switching and insert tandem; So-called insertion connects, and, in the occupied situation of circuit switching passage, is inserted in existing exchange connection and communicates;
Above-mentioned user has the WIFI terminal of private network talkback user code, user's access address code is the address code of WIFI connect into analysis processor and the address code of the integrated switch that this WIFI connect into analysis processor connects of access user, the address code of each integrated switch that WIFI connect into analysis processor is interconnective by all relevant integrated switches, these are relevant;
(6) after the line disconnection code that integrated switch is received or inputted by outer line transmission system at busy private network talkback wireless channel at exchange interface channel and the WIFI connect into analysis processor of foundation, within the retention time of setting, do not receive private network talkback wireless channel private network talkback numeric data code input and that input by outer line transmission system, integrated switch is removed corresponding exchange connection, and WIFI connect into analysis processor is discharged and gets back to its idle state former busy private network talkback wireless channel;
(7) integrated switch transmits the Internet transmission data of exchanges data port output by Internet and the output data of circuit switching port are undertaken obtaining multiplexed signals after channel multiplexing processing by multichannel multiplexing method, and by outer line transmission system, this multiplexed signals is transferred to WIFI connect into analysis processor and other integrated switches;
(8) WIFI connect into analysis processor adopts demultiplexing method to give obtaining respectively and export Internet transmission data and the private network talkback numeric data code for other application after demultiplexing the multiplexed signals of receiving by outer line transmission system, WIFI connect into analysis processor carries out encapsulation process by the Internet transmission data for other application and private network talkback numeric data code according to WIFI agreement and is wirelessly transmitted to the WIFI user terminal of access, and WIFI connect into analysis processor is launched private network talkback numeric data code according to the private network talkback wireless channel of setting.
For realizing method of work of the present invention, the present invention also introduces a kind of private network talkback transmission system, include WIFI terminal, outer line transmission system, public internet and public network telephone network, it is characterized in that having a plurality of WIFI connect into analysis processors, a plurality of integrated switches, a private network User Manager, between WIFI connect into analysis processor and integrated switch, between integrated switch, between integrated switch and public internet and public network telephone network, between integrated switch and private network User Manager, adopt outer line transmission system to be connected, described outer line transmission system, can adopt respectively optical fiber, cable, network 5 class lines, coaxial cable and corresponding relay system form, in each WIFI connect into analysis processor, there is a WIFI wireless access device, a host-host protocol is analyzed conversion processor, a multiplexed demodulation multiplexer, an outside line transmission converter, described outside line transmission converter, can adopt modulator-demodulator, optical-electrical converter, power carrier module, Ethernet access device, according to adapting to different outer line transmission systems, require choice for use, host-host protocol is analyzed conversion processor a WIFI transmission protocol data input/output terminal, an Internet protocol data input/output terminal, a plurality of private network talkback numeric data code input/output terminals, the input/output terminal of WIFI wireless access device is connected with the WIFI transmission protocol data input/output terminal that host-host protocol is analyzed conversion processor, Internet protocol data input/output terminal and private network talkback numeric data code input/output terminal that host-host protocol is analyzed conversion processor are connected with the shunt input/output terminal of multiplexed demodulation multiplexer respectively, the multiplexed signals input/output terminal of multiplexed demodulation multiplexer is connected with the interior line end of outside line transmission converter, the outer line end of outside line transmission converter is connected with outer line transmission system, in each integrated switch, there are a plurality of comprehensive transmission transducers, a SPC digital switch, a plurality of public network communication converters, a subscriber exchange, SPC digital switch has a plurality of Internet agreement switching ports, a plurality of circuit switching ports, in each comprehensive transmission transducer, there is an outside line transmission converter, a multiplexed demodulation multiplexer, the outer line end of the outside line transmission converter in integration switch transducer is connected with outer line transmission system, the interior line end of the outside line transmission converter in integration switch transducer is connected with the multiplexed signals input/output terminal of multiplexed demodulation multiplexer, the shunt input/output terminal of multiplexed demodulation multiplexer is connected with subnetwork host-host protocol switching port and the partial circuit switching port of SPC digital switch respectively, the subnetwork host-host protocol switching port of SPC digital switch is connected with other LAN switch and public internet respectively, in each public network communication adapter, there is a communication protocols converter, a digital-to-analogue bidirectional transducer, communication protocols converter and digital-to-analogue bidirectional transducer are for being connected in series, public network communication adapter is realized communication connection agreement and the transmission of signal-type conversion between SPC digital switch and subscriber exchange port, as: by the private network talkback numeric data code of the circuit switching port output of SPC digital switch, the simulated audio signal and the dual-tone multifrequency signaling signal that by public network communication adapter, are converted to subscriber exchange transmission are exchanged and are transmitted, the partial circuit switching port of SPC digital switch is connected with the user port of subscriber exchange by public network communication adapter, the outer line end of subscriber exchange is connected with public network telephone network,
Described Internet host-host protocol can be thought local area network (LAN) host-host protocol, metropolitan area network host-host protocol, Ethernet host-host protocol (meet DIX Ethernet V2 standard or meet the local area network (LAN) of 802.3 agreements), and described Internet transmission data are the transmission data that meet Internet host-host protocol.
Operation principle of the present invention is: on existing wireless lan network architecture basics, arrange Internet transmission data and private network talkback numeric data code for other application are carried out to private radio access in data link layer and network layer, the function element and the equipment that transmit and exchange along separate routes, users in wireless local area network, be that WIFI terminal has a plurality of channels in wireless access, in routine application, WIFI intercommunication and transfer of data user adopt competition mechanism to use each channel, for ensureing the wireless access of private network talkback numeric data code, in wireless channel, divide a plurality of private radio transmission channels are set, under private network talkback pattern, WIFI terminal take in advance divide the private radio transmission channel transmitting-receiving private network talkback numeric data code that arranges and by WIFI connect into analysis processor also being received and dispatched on private radio transmission channel of arranging, the private network talkback numeric data code that WIFI terminal is sent includes private network talkback speech coding and private network talkback function code, by WIFI connect into analysis processor, pass through the judgement of private network talkback function code and identification, Internet transmission data and private network talkback numeric data code for other application are distinguished, and adopt multiplexing technique to transmit respectively, Internet transmission data acquisition for other application is transmitted and exchanged by the original the Internet network transmission protocol, its exchange includes packet switching, frame relay switching and cell switching mode, to private network talkback numeric data code, adopt circuit switching (or being called circuit switched) mode to be exchanged connection, in the access to private network talkback numeric data code and Internet transmission data, in transmission and exchange process, adopted access along separate routes, judge along separate routes, multiplexed transmission, the mode of exchange is achieved respectively respectively, so just can be on same wireless lan network architecture basics, the transmission of maintenance to the Internet data for other application, and make private network talkback numeric data code at wireless access, in transmission and exchange, there is independent transmission channel and exchange connection, can ensure real-time and the reliability of private network talkback transfer of data, and when exchanging, private network talkback function code in inquiry private network talkback numeric data code, according to priority wherein, group's code, type of call code is carried out function of exchange, realizing its exchange ensures, priority feature realizes and type of call demand, like this, just realized that to have communication connection speed fast, real-time and speech quality are high, and level of priority has absolute mandatory priority communication guarantee, and have generally call, the private network talkback transmission system function of the functional requirement of group calling and notice, in addition, owing to also can sending the public network communication user code of Called Subscriber in the setting of WIFI terminal, after public network communication user code being identified and changed in integrated switch, by subscriber exchange and public network telephone network (i.e. conventional public fixed-line telephone network and public mobile telephone network), be connected and forward corresponding public network fixed telephone subscriber number and public network Mobile Directory Number carries out user's call connection, realizing the communication connection of private network user and public network telephone network.
Accompanying drawing explanation
Fig. 1 is the wireless private network intercommunication transmission system pie graph of one embodiment of the invention;
Fig. 2 is the formation electrical schematic diagram of WIFI connect into analysis processor in the wireless private network intercommunication transmission system of one embodiment of the invention;
Fig. 3 is the formation electrical schematic diagram of comprehensive transmission switch in the wireless private network intercommunication transmission system of one embodiment of the invention;
In Fig. 1 and Fig. 3, for parts and the module with same function, in each accompanying drawing, adopt identical numbering to represent, to avoid numbering too much to bring confusion.
Embodiment
Accompanying drawing take below as example explanation embodiments of the invention:
Fig. 1 is the wireless private network intercommunication transmission system pie graph of one embodiment of the invention, wherein:
A-1～A-n is the WIFI user terminal that a plurality of structures are identical; B-1～B-n～B-m is the WIFI connect into analysis processor that a plurality of structures are identical, includes WIFI access module; C1～Cn is the integrated switch that a plurality of structures are identical, SPC digital switch and subscriber exchange that employing has Internet host-host protocol and circuit switched protocol function form, D is private network User Manager, adopts computer server and Interface of Communication Conversion to form; E is public the Internet; F is public network telephone network; Between WIFI connect into analysis processor and integrated switch, between integrated switch and private network User Manager, adopt outer line transmission system to be connected between integrated switch and public the Internet and public network telephone network;
Fig. 2 is the formation electrical schematic diagram of WIFI connect into analysis processor in the wireless private network intercommunication transmission system of one embodiment of the invention, A1(An wherein) be a WIFI connect into analysis processor in A1～An, at A1(An) in: 1 is outer line transmission system, adopts cable or fibre circuit (can adopt optical fiber, cable, 5 class lines, coaxial cable, power line, power cable); 2 (can adopt modulator-demodulator, optical-electrical converter, power carrier module, Ethernet access device for outside line transmission converter, according to adapting to different outer line transmission systems, require to be selected), adopt the modular converter matching with transmission outside line to form, as: for the outer line transmission system that adopts the real loop line of metal of cable class, adopt modulator-demodulator, for the outer line transmission system of optical fiber, adopt optical-electrical converter to form; 3 is multiplexed demodulation multiplexer, adopts the multiplexing and demultiplexing module of time division multiplexed to form; 4 is host-host protocol analysis conversion processor, employing microprocessor forms, wherein be mounted with Internet protocal analysis and canned software, transmission data to input unpack and analyzing and processing, according to analysis result, transmission data are processed respectively and exported, Internet transmission data for other application are encapsulated to reduction and output according to the former network transmission protocol, to private network talkback numeric data code, adopt other output ports to be exported, to the Internet transmission data of input and private network talkback numeric data code, adopt WIFI agreement to carry out wireless transmission; 5 is WIFI wireless access device, adopts the conventional radio access module that meets WIFI authentication protocol; The input/output terminal of WIFI wireless access device is connected with the WIFI transmission protocol data input/output terminal that host-host protocol is analyzed conversion processor, Internet protocol data input/output terminal and private network talkback numeric data code input/output terminal that host-host protocol is analyzed conversion processor are connected with the shunt input/output terminal of multiplexed demodulation multiplexer respectively, the multiplexed signals input/output terminal of multiplexed demodulation multiplexer is connected with the interior line end of outside line transmission converter, and the outer line end of outside line transmission converter is connected with outer line transmission system;
Fig. 3 is the formation electrical schematic diagram of integrated switch in the wireless private network intercommunication transmission system of one embodiment of the invention, wherein: the integration switch transmission converter that G1～Gn is a plurality of same structures, at G1(～Gn) in, 1 is outer transmission line system, adopt and outer line transmission system identical in accompanying drawing 2, can adopt cable or fibre circuit, 2 is outside line transmission converter, adopts the modular converter matching with transmission outside line to form, as: the outer line transmission system for adopting the real loop line of metal of cable class, adopt modulator-demodulator, for the outer line transmission system of optical fiber, adopt optical-electrical converter to form, 3 is multiplexed demodulation multiplexer, adopts and demultiplexing module formation multiplexing with time division multiplexed corresponding in accompanying drawing 2, 6 is SPC digital switch, there is a plurality of Internet agreement switching ports and circuit switching port, SPC digital switch adopts Internet host-host protocol to be exchanged to Internet agreement switching port wherein, can carry out and include packet switching, the function of exchange of frame relay switching and cell switching, SPC digital switch is to circuit switching port executive circuit function of exchange wherein, and there is scheduling exchange and telecommunication circuit exchange tandem function, that is: there is the exchange connection of communication physical connection and the function of telecommunication circuit tandem that actual point-to-point or multi-point can be provided each circuit switching port, can be for group calling be provided between multi-user, generally call, the communication connection function of notice and meeting tandem, H1～Hn is the public network communication adapter of a plurality of same structures, each public network communication adapter consists of transport protocol conversion device 7 and digital-to-analogue bidirectional transducer 8 wherein, transport protocol conversion device 7 consists of microprocessor, and digital-to-analogue bidirectional transducer 8 is by digital to analog converter and analog to digital converter module composition, 9 is subscriber exchange, adopts common user switch, 10 is public internet, is connected with the network transmission protocol switching port of SPC digital switch, 11 is public network telephone network, is public fixed-line telephone network and public mobile telephone network, the outer line end of the outside line transmission converter in integration switch transducer is connected with outer line transmission system, the interior line end of the outside line transmission converter in integration switch transducer is connected with the multiplexed signals input/output terminal of multiplexed demodulation multiplexer, the shunt input/output terminal of multiplexed demodulation multiplexer is connected with subnetwork host-host protocol switching port and the partial circuit switching port of SPC digital switch respectively, the subnetwork host-host protocol switching port of SPC digital switch is connected with other LAN switch and public internet respectively, in each public network communication adapter, there is a communication protocols converter, a digital-to-analogue bidirectional transducer, communication protocols converter and digital-to-analogue bidirectional transducer are for being connected in series, the partial circuit switching port of SPC digital switch is connected with the user port of subscriber exchange by public network communication adapter, the outer line end of subscriber exchange is connected with public network telephone network,
According to the modules in each accompanying drawing, device and equipment according to shown in accompanying drawing and the functional requirement of above-mentioned explanation and annexation configured and connected, for WIFI connect into analysis processor, integrated switch and private network User Manager establishment relevant work software and running parameter is set can completes enforcement of the present invention.
Private network talkback method of the present invention can also be that the Internet for other application transmission data and the private network talkback numeric data code Unified coding in WIF terminal is included in the host-host protocol by WIFI, in the blended data bag of network layer and the encapsulation of data link layer host-host protocol, transmit, after unpacking by the blended data bag to receiving, integrated switch port carries out determination processing, Internet transmission data for other application and private network talkback numeric data code are given along separate routes, the Internet host-host protocol switching port and the circuit switching port that are input to respectively integrated switch exchange respectively, the private network talkback numeric data code that the transmission data of the Internet for other application of exporting for integrated switch Internet host-host protocol switching port and circuit switching port are exported is transferred to WIFI connect into analysis processor by outer line transmission system after unifying to encapsulate according to Internet agreement and carries out wireless transmission according to WIFI host-host protocol, or exchange processing by the integrated switch that outer line transmission system is transferred to other, can simplify enforcement of the present invention like this, only need that integrated switch is carried out to necessary function modifications and can realize object of the present invention.
Private network talkback method of the present invention can also be to adopt different wireless communication transmissions passages to transmit to WIFI transfer of data and private network talkback signal, includes voice signal and private network function signaling, and adopt following method of work in private network talkback signal:
(1) WIFI connect into analysis processor carries out digitized processing by the private network talkback signal of receiving and corresponding received field strength signal and obtains private network talkback phonetic code, private network talkback function code and field intensity code, by private network talkback phonetic code,, field intensity code, private network talkback function code and wireless access address code organize into groups framing and obtain private network talkback numeric data code;
(2) WIFI connect into analysis processor is reduced into original private network talkback signal by the private network talkback numeric data code of exporting by demultiplexing device, and according to the comparable situation of wherein each field intensity code, if the field intensity code in the private network talkback numeric data code of other WIFI connect into analysis processor switching inputs that the field intensity code of this WIFI connect into analysis processor is better than receiving, by this WIFI connect into analysis processor, original private network talkback signal is carried out to wireless transmission and sends to integrated switch by outer line transmission system, otherwise the private network talkback signal in the private network talkback numeric data code of demultiplexing device output in other WIFI connect into analysis processors that receive is carried out to wireless transmission,
(3) some integrated switches provide same clock signal by outer line transmission system and other integrated switches to other all integrated switches and WIFI connect into analysis processor;
(4), when WIFI connect into analysis processor carries out wireless transmission to private network talkback signal, adopt the clock signal that provides and send here by outer line transmission system by integrated switch as transmitting local vibration source;
Like this can be so that the completely independent transmission of WIFI transfer of data and private network talkback data can reduce it and influence each other, convenient application.
Private network talkback transmission system of the present invention can also be in described integrated switch, to have a plurality of host-host protocols to analyze switching processor, each host-host protocol is analyzed switching processor two Internet protocol data input/output terminals, a private network talkback numeric data code input/output terminal, the interior lines input/output terminal of outside line transmission converter is connected with the Internet protocol data input/output terminal that host-host protocol is analyzed switching processor, another Internet protocol data input/output terminal that host-host protocol is analyzed switching processor is connected with the Internet agreement switching port of integrated switch, the private network talkback numeric data code input/output terminal that host-host protocol is analyzed switching processor is connected with the circuit switching port of integrated switch, can simplify enforcement of the present invention like this, only need that integrated switch is carried out to necessary function modifications and can realize object of the present invention.
Private network talkback transmission system of the present invention can also be to have a packet switch, a digital dispatching switch in the SPC digital switch of described integrated switch, the transmission input/output port of packet switch and digital dispatching switch is connected with the shunt input/output terminal of multiplexed demodulation multiplexer respectively, and the control port of packet switch and digital dispatching switch is connected with private network User Manager by outer line transmission system respectively; Packet switch is realized the working method that includes packet switching, frame relay switching and cell switching to Internet protocol port, digital dispatching switch realize to the existing private network talkback function code of circuit-switched side cause for gossip desiredly generally call, group calling, notice and insert exchange and the communication tandem of calling out, can, so that it is that available enforcement completes that the SPC digital switch in integrated switch is applied existing mature technology, be convenient to enforcement of the present invention like this.
Private network talkback transmission system of the present invention can also be that described private network talkback transmission system has a plurality of WIFI terminals with private network radio receiving-transmitting unit, in each WIFI connect into analysis processor, there is a private network radio receiving-transmitting unit, an antenna combiner, a duplexer, one receives power splitter, a transmission selector switch, a phonetic coding device, a speech digit decoder, a private network talkback controller, antenna and feeder system are connected with the antenna port of WIFI wireless access device and duplexer respectively by antenna combiner, the reception transmitting input/output terminal of duplexer is connected with radio frequency reception end and the transmitting terminal of private network transceiver respectively, the reception signal output part of private network transceiver is connected with the input that receives power splitter, two outputs that receive power splitter are connected with the input end of analog signal of analog to digital converter and an input of transmission selector switch respectively, the digital signal output end of analog to digital converter, the digital signal input end of digital to analog converter, the reception CF signal intensity output of private network transceiver, the switch control end that sends selector switch is connected with the part input/output terminal of private network talkback controller respectively, the multiple signals input/output terminal of multiplexed demodulation multiplexer is connected with the part input/output terminal of WIFI wireless access device and private network talkback controller respectively, the digital input end of speech digit decoder is connected with an output of private network talkback controller, the analog signal output of speech digit decoder is connected with another input that sends selector switch, sending the output of selector switch and the transmitting modulation signal input of private network transceiver is connected, like this can be so that the completely independent transmission of WIFI transfer of data and private network talkback data can reduce it and influence each other, convenient application.
The present invention be take WIFI host-host protocol, WIFI functional module and technology and is achieved as basis, can be in the WLAN (wireless local area network) of other procotols also to adopt the method that the present invention introduces to be achieved under basic condition; This clearly demarcated described WIFI WLAN (wireless local area network), it can also be the WLAN (wireless local area network) under other host-host protocols, wherein said WIFI user terminal can be also the users in wireless local area network of other agreements, corresponding, WIFI wireless access device wherein can be also the wireless local area network access module of other host-host protocols.
The present invention has introduced a kind of private network talkback method and private network talkback transmission system, adopt WIFI terminal, WIFI connect into analysis processor, outer line transmission system, integrated switch and private network User Manager form, on the equipment and outer line transmission system basis that can provide in existing wireless lan network structure, keep under the existing data access of WLAN (wireless local area network) and the advantage function condition of transmission, for professional user, to realize communication connection speed fast, real-time and speech quality are high, level of priority has absolute mandatory priority communication, and generally call, group calling, the private network talkback transmission system of the function of noticing, and when needed, can realize the communication connection of private network talkback user and public network communication user, to meet the demand of private network talkback transmission.
Claims (7)
1. a private network talkback method, include WLAN (wireless local area network), a plurality of WIFI terminals, a plurality of WIFI connect into analysis processors, outer line transmission system, integrated switch and private network User Manager, it is characterized in that when choice for use private network talkback mode of operation, physical layer in WIFI protocol transmission, in the WIFI wireless access channel of data link layer and network layer, mark off a plurality of for transmitting the private network talkback wireless channel of private network talkback numeric data code, WIFI terminal is directly communicated with access by this private network talkback wireless channel with WIFI connect into analysis processor under private network talkback pattern, circuit transmission and circuit switching channel transfer private network talkback numeric data code are set in local net network, and selection adopts following method of work:
(1) each WIFI terminal and WIFI connect into analysis processor arrange identical code division multiple access address code on corresponding private network talkback wireless channel, the code division multiple access address code different to different private network talkback radio channel setting, to WIFI terminal, the wireless transmission on private network talkback wireless channel is the broadcast communication method of multicast on same channel to WIFI connect into analysis processor, to WIFI connect into analysis processor, the wireless transmission on private network talkback wireless channel is the time-division shared channel transmission communication means of multiple spot to any on same channel to WIFI terminal, each WIFI terminal is arranged to private network user code, priority code, group's code, channel code, WIFI terminal is shown the operating state of private network talkback wireless channel and when initiating private network talkback, is selected idle private network talkback wireless channel, WIFI terminal arranges and uses private network talkback wireless channel under private network talkback mode of operation, according to WIFI host-host protocol, private network talkback numeric data code encapsulated and be transferred to WIFI connect into analysis processor by the private network talkback wireless channel arranging, in described private network talkback numeric data code, include speech digit code and private network talkback function code, in private network talkback function code, include private network talkback identification code, private network user code, priority code, group's code, type of call code, channel code, line disconnection code, in type of call code, include individual calling code, generally call code, group calling code, notice code, insert and call out code, the private network user code that contains Called Subscriber in individual calling code, fixed line extension set code, public network communication user code, public network user communications codes is public network fixed telephone subscriber number and Mobile Directory Number, WIFI terminal is differentiated the private network talkback numeric data code of receiving, when the related content in the private network talkback function code that private network talkback numeric data code comprises is corresponding with this WIFI terminal, this WIFI terminal just gives respective handling,
(2) in private network User Manager, store the address code of each integrated switch, WIFI connect into analysis processor, and corresponding with physical address code separately, in private network User Manager, be provided with user code, priority code, group's code, the channel code of each WIFI terminal, and corresponding with the physical address code of WIFI terminal; Private network User Manager by outer line transmission system to address code corresponding with physical address code is separately set in each integrated switch and WIFI connect into analysis processor, in each integrated switch and WIFI connect into analysis processor, be provided with private network user code, priority code, group's code, the channel code of each WIFI terminal, and corresponding with the physical address code of WIFI terminal, in private network User Manager, can store and by integrated switch and outer line transmission system, the accepting state priority code in each WIFI connect into analysis processor is set;
(3) each WIFI connect into analysis processor sends to private network User Manager by the address code of the private network user code of the WIFI terminal of access and the WIFI connect into analysis processor that accesses by integrated switch and outer line transmission system, private network User Manager sends to each integrated switch storage by the address code of the private network user code of the WIFI terminal of receiving and the address code of WIFI connect into analysis processor accessing and the integrated switch at this WIFI connect into analysis processor place, private network User Manager carries out user grouping and authority setting to the WIFI terminal of each access WIFI connect into analysis processor, storage and demonstration, private network User Manager receives and records the operating state of each WIFI connect into analysis processor, accepting state priority code, the private network talkback function code of address code and access user, and indicated and shown in corresponding geographical position figure and tables of data, and according to the address code of the WIFI connect into analysis processor of each access WIFI terminal, the address code of the integrated switch that WIFI connect into analysis processor connects, the address code of each interconnective integrated switch, connection request while calling out according to private network talkback function code and transmission switching path, establishment generates private network call connection routing table, call function and corresponding private network call connection routing table that the private network talkback function code of the WIFI terminal of each access WIFI connect into analysis processor is indicated send to each integrated switch storage, private network User Manager is produced the private network call connection routing table of corresponding individual calling and sends to relevant integrated switch by outer line transmission system and integrated switch when processing individual calling carries out exchange connection,
(4) WIFI connect into analysis processor is differentiated the WIFI terminal of access according to the channel code of storage, private network talkback numeric data code to the identical WIFI terminal of channel code is accessed, and by each private network user code of access, access channel quality indication code, the address code of this access WIFI connect into analysis processor sends to each integrated switch by outer line transmission system and private network User Manager is stored, WIFI connect into analysis processor sends to the WIFI terminal of access store and show by the WIFI network transmission protocol transmission channel service condition of private network talkback wireless channel, the available free operating state of operating state on the private network talkback wireless channel of WIFI connect into analysis processor, receive operating state and transmitting operating state, wherein: its idle state is: wireless channel and wire transmission channel are all in accepting state, reception operating state is: the private network talkback numeric data code that wireless channel is received forwards by private network talkback wireless channel and outside line transmission system sends, transmitting operating state is: the private network talkback numeric data code receiving by outer line transmission system is launched by wireless channel, WIFI connect into analysis processor is according to relatively determining the operating state of private network talkback wireless channel is selected the access channel quality indication code of each access WIFI terminal and accepting state priority code, the access channel quality indication code of the WIFI terminal of other that receive by private network talkback wireless channel that the access channel quality indication code of the WIFI terminal of access is better than receiving by outer line transmission system when this WIFI connect into analysis processor, this WIFI connect into analysis processor enters reception operating state to this private network talkback wireless channel, otherwise enter transmitting operating state, if to access channel quality indication code is relatively identical, but the accepting state priority code of this WIFI connect into analysis processor is higher than other WIFI connect into analysis processor, this WIFI connect into analysis processor enters reception operating state to this private network talkback wireless channel, otherwise enter transmitting operating state, WIFI connect into analysis processor is differentiated the transmission of the Internet for other application data in the WIFI wireless access data of receiving by wireless channel and exports along separate routes by different ports from private network talkback numeric data code, private network talkback numeric data code arranges and selects corresponding port output according to channel code, WIFI connect into analysis processor is by the Internet transmission data for other application, the address code of the access WIFI connect into analysis processor of private network talkback numeric data code and correspondence adopts multichannel multiplexing method to carry out channel multiplexing processing and obtains multiplexed signals, and by outer line transmission system, multiplexed signals is transferred to integrated switch,
(5) integrated switch adopts demultiplexing method to give obtaining respectively Internet transmission data and the private network talkback numeric data code for other application after demultiplexing the multiplexed signals of sending here by outer line transmission system, the transmission of the Internet for other application data that obtain are input to Internet host-host protocol port and exchange processing according to Internet host-host protocol, the private network talkback numeric data code obtaining is input to circuit switching port, the calling requirement that integrated switch is set according to the private network talkback function code in private network talkback numeric data code, circuit switching connection is carried out to private network talkback numeric data code in the access address of each private network user code and the path of private network call connection routing table appointment of storage, and select to adopt following methods to implement exchange connection:
1. according to priority code, set and communicate circuit switching connection, the force priority exchange that gives that priority is high connects;
2. according to channel code, set and select corresponding telecommunication circuit passage to exchange connection;
3. according to individual calling code, select corresponding circuit switching passage to connect, in private network User Manager, inquire the address code of the WIFI connect into analysis processor of called WIFI terminal, the address code of integrated switch that this WIFI connect into analysis processor connects, in private network User Manager, generate corresponding private network individual calling connection route table and send to relevant integrated switch to carry out exchange and connect; While containing public network communication user code in individual calling code, by integrated switch, be connected with public network telephone network and send corresponding public network fixed telephone subscriber number and public network Mobile Directory Number carries out call connection;
4. according to the setting of generally calling code in type of call code, all users and user's access address code are communicated to circuit switching tandem;
5. according to the address code of the access address code of the setting of the group calling code in type of call code and affiliated group user and relevant integrated switch, the user of affiliated group is communicated to circuit switching tandem;
6. according to the setting of the notice code in type of call code, all circuit switching ports are communicated to circuit switching tandem, and when master exhales telex network, do not access other users' calling and call;
7. according to the setting of the insertion calling code in type of call code, existing communication is carried out to circuit switching and insert tandem;
(6) after the line disconnection code that integrated switch is received or inputted by outer line transmission system at busy private network talkback wireless channel at exchange interface channel and the WIFI connect into analysis processor of foundation, within the retention time of setting, do not receive private network talkback wireless channel private network talkback numeric data code input and that input by outer line transmission system, integrated switch is removed corresponding exchange connection, and WIFI connect into analysis processor is discharged and gets back to its idle state former busy private network talkback wireless channel;
(7) integrated switch transmits the Internet transmission data of exchanges data port output by Internet and the output data of circuit switching port are undertaken obtaining multiplexed signals after channel multiplexing processing by multichannel multiplexing method, and by outer line transmission system, this multiplexed signals is transferred to WIFI connect into analysis processor and other integrated switches;
(8) WIFI connect into analysis processor adopts demultiplexing method to give obtaining respectively and export Internet transmission data and the private network talkback numeric data code for other application after demultiplexing the multiplexed signals of receiving by outer line transmission system, WIFI connect into analysis processor carries out encapsulation process by the Internet transmission data for other application and private network talkback numeric data code according to WIFI agreement and is wirelessly transmitted to the WIFI user terminal of access, and WIFI connect into analysis processor is launched private network talkback numeric data code according to the private network talkback wireless channel of setting.
2. private network talkback method claimed in claim 1, it is characterized in that being included in the host-host protocol by WIFI in the transmission data of the Internet for other application and the private network talkback numeric data code Unified coding of WIF terminal, in the blended data bag of network layer and the encapsulation of data link layer host-host protocol, transmit, after unpacking by the blended data bag to receiving, integrated switch port carries out determination processing, Internet transmission data for other application and private network talkback numeric data code are given along separate routes, the Internet host-host protocol switching port and the circuit switching port that are input to respectively integrated switch exchange respectively, the private network talkback numeric data code that the transmission data of the Internet for other application of exporting for integrated switch Internet host-host protocol switching port and circuit switching port are exported is transferred to WIFI connect into analysis processor by outer line transmission system after unifying to encapsulate according to Internet agreement and carries out wireless transmission according to WIFI host-host protocol, or exchange processing by the integrated switch that outer line transmission system is transferred to other.
3. private network talkback method as claimed in claim 1, it is characterized in that WIFI transfer of data and private network talkback signal to adopt different wireless communication transmissions passages to transmit, in private network talkback signal, include voice signal and private network function signaling, and adopt following method of work:
(1) WIFI connect into analysis processor carries out digitized processing by the private network talkback signal of receiving and corresponding received field strength signal and obtains private network talkback phonetic code, private network talkback function code and field intensity code, by private network talkback phonetic code,, field intensity code, private network talkback function code and wireless access address code organize into groups framing and obtain private network talkback numeric data code;
(2) WIFI connect into analysis processor is reduced into original private network talkback signal by the private network talkback numeric data code of exporting by demultiplexing device, and according to the comparable situation of wherein each field intensity code, if the field intensity code in the private network talkback numeric data code of other WIFI connect into analysis processor switching inputs that the field intensity code of this WIFI connect into analysis processor is better than receiving, by this WIFI connect into analysis processor, original private network talkback signal is carried out to wireless transmission and sends to integrated switch by outer line transmission system, otherwise the private network talkback signal in the private network talkback numeric data code of demultiplexing device output in other WIFI connect into analysis processors that receive is carried out to wireless transmission,
(3) some integrated switches provide same clock signal by outer line transmission system and other integrated switches to other all integrated switches and WIFI connect into analysis processor;
(4), when WIFI connect into analysis processor carries out wireless transmission to private network talkback signal, adopt the clock signal that provides and send here by outer line transmission system by integrated switch as transmitting local vibration source.
4. a private network talkback transmission system, include WIFI terminal, outer line transmission system, public internet and public network telephone network, it is characterized in that having a plurality of WIFI connect into analysis processors, a plurality of integrated switches, a private network User Manager, between WIFI connect into analysis processor and integrated switch, between integrated switch, between integrated switch and public internet and public network telephone network, between integrated switch and private network User Manager, adopt outer line transmission system to be connected, in each WIFI connect into analysis processor, there is a WIFI wireless access device, a host-host protocol is analyzed conversion processor, a multiplexed demodulation multiplexer, an outside line transmission converter, host-host protocol is analyzed conversion processor a WIFI transmission protocol data input/output terminal, an Internet protocol data input/output terminal, a plurality of private network talkback numeric data code input/output terminals, the input/output terminal of WIFI wireless access device is connected with the WIFI transmission protocol data input/output terminal that host-host protocol is analyzed conversion processor, Internet protocol data input/output terminal and private network talkback numeric data code input/output terminal that host-host protocol is analyzed conversion processor are connected with the shunt input/output terminal of multiplexed demodulation multiplexer respectively, the multiplexed signals input/output terminal of multiplexed demodulation multiplexer is connected with the interior line end of outside line transmission converter, the outer line end of outside line transmission converter is connected with outer line transmission system, in each integrated switch, there are a plurality of comprehensive transmission transducers, a SPC digital switch, a plurality of public network communication converters, a subscriber exchange, SPC digital switch has a plurality of Internet agreement switching ports, a plurality of circuit switching ports, in each comprehensive transmission transducer, there is an outside line transmission converter, a multiplexed demodulation multiplexer, the outer line end of the outside line transmission converter in integration switch transducer is connected with outer line transmission system, the interior line end of the outside line transmission converter in integration switch transducer is connected with the multiplexed signals input/output terminal of multiplexed demodulation multiplexer, the shunt input/output terminal of multiplexed demodulation multiplexer is connected with subnetwork host-host protocol switching port and the partial circuit switching port of SPC digital switch respectively, the subnetwork host-host protocol switching port of SPC digital switch is connected with other LAN switch and public internet respectively, in each public network communication adapter, there is a communication protocols converter, a digital-to-analogue bidirectional transducer, communication protocols converter and digital-to-analogue bidirectional transducer are for being connected in series, the partial circuit switching port of SPC digital switch is connected with the user port of subscriber exchange by public network communication adapter, the outer line end of subscriber exchange is connected with public network telephone network.
5. a kind of private network talkback transmission system as claimed in claim 4, it is characterized in that having a plurality of host-host protocols to analyze switching processor in described integrated switch, each host-host protocol is analyzed switching processor two Internet protocol data input/output terminals, a private network talkback numeric data code input/output terminal, the interior lines input/output terminal of outside line transmission converter is connected with the Internet protocol data input/output terminal that host-host protocol is analyzed switching processor, another Internet protocol data input/output terminal that host-host protocol is analyzed switching processor is connected with the Internet agreement switching port of integrated switch, the private network talkback numeric data code input/output terminal that host-host protocol is analyzed switching processor is connected with the circuit switching port of integrated switch.
6. a kind of private network talkback transmission system as claimed in claim 4, in the SPC digital switch of the integrated switch described in it is characterized in that, there are a packet switch, a digital dispatching switch, the transmission input/output port of packet switch and digital dispatching switch is connected with the shunt input/output terminal of multiplexed demodulation multiplexer respectively, and the control port of packet switch and digital dispatching switch is connected with private network User Manager by outer line transmission system respectively.
7. private network talkback transmission system as claimed in claim 4, it is characterized in that described private network talkback transmission system has a plurality of WIFI terminals with private network radio receiving-transmitting unit, in each WIFI connect into analysis processor, there is a private network radio receiving-transmitting unit, an antenna combiner, a duplexer, one receives power splitter, a transmission selector switch, a phonetic coding device, a speech digit decoder, a private network talkback controller, antenna and feeder system are connected with the antenna port of WIFI wireless access device and duplexer respectively by antenna combiner, the reception transmitting input/output terminal of duplexer is connected with radio frequency reception end and the transmitting terminal of private network transceiver respectively, the reception signal output part of private network transceiver is connected with the input that receives power splitter, two outputs that receive power splitter are connected with the input end of analog signal of analog to digital converter and an input of transmission selector switch respectively, the digital signal output end of analog to digital converter, the digital signal input end of digital to analog converter, the reception CF signal intensity output of private network transceiver, the switch control end that sends selector switch is connected with the part input/output terminal of private network talkback controller respectively, the multiple signals input/output terminal of multiplexed demodulation multiplexer is connected with the part input/output terminal of WIFI wireless access device and private network talkback controller respectively, the digital input end of speech digit decoder is connected with an output of private network talkback controller, the analog signal output of speech digit decoder is connected with another input that sends selector switch, sending the output of selector switch and the transmitting modulation signal input of private network transceiver is connected.
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| CN202085280U (en) * | 2011-05-13 | 2011-12-21 | 惠州市恒诺实业有限公司 | Wireless talkback system for integration access of special simulation talkback system and digital talkback system |
| CN202475770U (en) * | 2012-03-13 | 2012-10-03 | 耿直 | Private network talkback transmission system based on wireless local area network |
-
2012
- 2012-03-13 CN CN201210064179.8A patent/CN102547487B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0497428A2 (en) * | 1991-01-31 | 1992-08-05 | Matsushita Electric Works, Ltd. | Interphone with television |
| CN202085280U (en) * | 2011-05-13 | 2011-12-21 | 惠州市恒诺实业有限公司 | Wireless talkback system for integration access of special simulation talkback system and digital talkback system |
| CN202475770U (en) * | 2012-03-13 | 2012-10-03 | 耿直 | Private network talkback transmission system based on wireless local area network |
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| CN102547487A (en) | 2012-07-04 |
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