CN200941675Y

CN200941675Y - Radio switch-in station

Info

Publication number: CN200941675Y
Application number: CNU2006200629211U
Authority: CN
Inventors: 万斌; 王桂钧; 蒲德渠; 蒋宗斌; 孔庆佐
Original assignee: DESAI ELECTRONIC (HUIZHOU) Ltd
Current assignee: Huizhou Desay Industry Development Co., Ltd.
Priority date: 2006-08-10
Filing date: 2006-08-10
Publication date: 2007-08-29
Anticipated expiration: 2016-08-10

Abstract

A radio access point comprises a radio air interface unit used for the radio connection with a GSM mobile communication system, an external terminal interface unit connected with an external communication terminal, a storage used to store the data information, a GSM core process unit taking charge of processing the radio message exchange, a man-machine interface used to upgrade the software of the radio access point, a master CPU of the access point used to control the status information parameters of the storage as well as the man-machine interface and connected with the GSM core process unit. The radio air interface unit, the external terminal interface unit, the storage, the man-machine interface, the GSM core process unit are respectively connected with the master CPU of the access point. The utility model provides a radio access point of low cost, high practicability, high reliability, wide application and effectively taking advantage of the existing resources.

Description

A kind of radio access station

Technical field

The utility model relates to a kind of device that wireless mobile telecommunication technology is combined with the telephone terminal technology, is meant a kind of radio access station of realizing that line telecommunications fixed network and GSM air interface combine together especially.

Background technology

Existing application is in the fixed wireless telephone of GSM public's cellular mobile communication networks, because of not being subjected to be limited by configuration as landline telephone, simultaneously along with the networking of mobile communication carriers such as China Mobile, CHINAUNICOM is improved and application popularization, the raising of speech quality, and have the value-added services such as transmitting-receiving note as mobile phone, this type of radiophone more and more is subjected to liking of people.Yet, face the problem of three aspects in actual use based on the fixed wireless telephone under the GSM system:

One, there be not some communication situations of telecommunication line, when needs are arranged the multi-section phone, if adopt the GSM fixed wireless telephone, just must be equipped with respectively, because the cost of GSM fixed wireless telephone wants high more than wired fixed line machine cost of routine, thereby cause the raising of customer using cost;

Its two, do not having some communication situations of telecommunication line, the user not only needs the communication mode of voice or electronic information, also needs fax, and the GSM fixed wireless telephone does not possess the function of supporting fax usually.

Its three, the routine call machine that is used for the line telecommunications fixed network has reached suitable popularity, if buy the GSM fixed wireless telephone, then causes the waste of user's existing device.

The utility model content

The problem that the utility model need solve provides that a kind of cost is low, practicality is high, reliability is high, easy to use, the radio access station that is widely used, effectively utilizes existing resource.

Design a kind of radio access station according to the above-mentioned problem that needs to solve, comprised the wireless air interface unit that carries out wireless connections with gsm mobile communication system; Realize the exterior terminal interface unit that radio access station is connected with external communications terminals; The memory of storage data-message comprises program storage and data storage; Be responsible for the GSM core processing unit of information exchange between processing wireless air interface and gsm system base station, SIM card seat circuit, the exterior terminal interface unit; By be connected the user-machine interface that radio access station is carried out software upgrading with external computer; Memory state information parameter and user-machine interface are implemented control and set up the assess station host CPU that connects with the GSM core processing unit; Wireless air interface unit, exterior terminal interface unit, memory, user-machine interface, GSM core processing unit connect with the assess station host CPU respectively, and the power subsystem of operating voltage is provided for each part mentioned above.

The utlity model has following advantage:

1, the infull place of communicating by letter of letter configuration is arranged in vast rural area and area, mountain village etc.,, solve the difficult difficult problem of local conversation by combining of the low wired fixed line machine of the utility model radio access station and existing great amount of cost;

2, the utility model not only possesses the function of voice call, can also realize function such as transmitting-receiving note, wireless Internet access as mobile phone, provide than general wired fixed line machine and more to have manyed value-added service, be connected with external computer by user-machine interface simultaneously, radio access station is carried out software upgrading, can increase different function services at any time;

3, the utility model is by combining the function with fax sending and receiving with facsimile machine or PC fax terminal, adjusts the position of facsimile machine in the area that does not have Wireline to arrange or because of need of work, all can bring great convenience.

Description of drawings

Accompanying drawing 1 is the connection schematic diagram of the utility model in practicality; Accompanying drawing 2 is theory diagrams of the present utility model; Accompanying drawing 3 is the utility model host CPU circuit theory diagrams; Accompanying drawing 4 is the utility model information interface circuit theory diagrams; Accompanying drawing 5 is the utility model exterior terminal interface unit circuit theory diagrams; Accompanying drawing 6 is the utility model quick-break switch circuit theory diagrams; Accompanying drawing 7 is GSM nucleus module circuit theory diagrams in the utility model GSM core processing unit; Accompanying drawing 8 is truck control circuit schematic diagrams in the utility model GSM core processing unit; Accompanying drawing 9 is SIM card seat circuit theory diagrams in the utility model GSM core processing unit; Accompanying drawing 10 is the utility model power unit circuit schematic diagrams.

Embodiment

Be elaborated below with reference to accompanying drawing:

As shown in Figure 1, the utility model radio access station is used schematic diagram, when connecting with wire telephone or PC fax terminal by radio access station, except realizing having now the function that the GSM fixed wireless telephone possesses, can also realize facsimile function.

As shown in Figure 2, the functional-block diagram of the utility model radio access station comprises the wireless air interface unit that carries out wireless connections with gsm mobile communication system; Realize the exterior terminal interface unit that radio access station is connected with external communications terminals; The memory of storage data-message comprises program storage and data storage; Be responsible for the GSM core processing unit of information exchange between processing wireless air interface and gsm system base station, SIM card seat circuit, the exterior terminal interface unit; By be connected the user-machine interface that radio access station is carried out software upgrading with external computer; Memory state information parameter and user-machine interface are implemented control and set up the assess station host CPU that connects with the GSM core processing unit; Wireless air interface unit, exterior terminal interface unit, memory, user-machine interface, GSM core processing unit connect with the assess station host CPU respectively, and the power subsystem of operating voltage is provided for each part mentioned above.

As shown in Figure 3, assess station host CPU circuit theory diagrams in the utility model radio access station, the assess station host CPU connects with the exterior terminal interface unit by the information interface circuit, the assess station host CPU is made up of integrated circuit U4 and peripheral circuit thereof, 2,3,4,5,43 pin of integrated circuit U4 connect with the information interface circuit, 11,13,29 pin of integrated circuit U4 connect with the GSM core processing unit, and 7,8,9,14 pin of integrated circuit U4 connect with the exterior terminal interface unit.

As shown in Figure 4, information interface circuit theory diagrams in the utility model radio access station, the information interface circuit is made up of integrated circuit U8 and peripheral circuit thereof, 9,10,11,12,13 pin of integrated circuit U8 connect with assess station host CPU respective end, and 2,8 pin of integrated circuit U8 connect with the exterior terminal interface unit.The information interface circuit is responsible for receiving DTMF (dual-tone multifrequency) dialing tone that routine call sends, and through sending to the GSM core processing unit after the decoding, the telephone number that routine call is dialled is converted to the call signaling under the GSM mobile system system.

As shown in Figure 5, outside terminal interface unit circuit theory diagrams in the utility model radio access station, the exterior terminal interface unit can make the feed of conventional telecommunications fixed line machine operate as normal by output and support the audio signal of online dialing, receive the dual tone multi-frequency dtmf signal, realize serial loop interface circuit chips U1 and peripheral circuit composition thereof that routine call and external call voice channel are straight-through, 14 of serial loop interface circuit chips U1,20 pin connect with the information interface circuit, 14 pin of serial loop interface circuit chips U1 are via capacitor C 24, C41, C45, C48, C49, C51, the language sound filter circuit that send that C52 forms connects with the GSM core processing unit, 15 pin of serial loop interface circuit chips U1 are via capacitor C 28, C30, C31, C32, C33, resistance R 33, R34, R35, the language sound amplifying circuit that is subjected to that arithmetic unit U6-A forms connects 37 of serial loop interface circuit chips U1 with the GSM core processing unit, 41 pin connect with the quick-break switch circuit.The exterior terminal interface can be achieved as follows function: (1) output can make the feed of conventional telecommunications fixed line machine operate as normal and support the audio signal of online dialing.These two outputs meet the relevant interface rules that the routine call machine is linked into the telecommunications fixed network; (2) reception routine call machine also sends to the GSM nucleus module after treatment by DTMF (dual-tone multifrequency) signal of keyboard operation output; (3) after nucleus module is by air interface and external communications terminals complete connection process, under the control of GSM nucleus module, realize the straight-through of the routine call that connected and external call voice channel; (4) receive the information that outside routine call machine sends and convert prescribed form to after handle the back by the GSM nucleus module and send as the short message mode and maybe the short message that receives is converted to the form that outside routine call machine can discern and supply demonstration.At this, external communications terminals commonly used is routine call machine or facsimile machine or PC fax terminal.

As shown in Figure 6; quick-break switch circuit theory diagrams in the utility model radio access station; the quick-break switch circuit comprises fast tripping protection switch RV1, integrated circuit U14, resistance R 8, R9, pressure cell PTC1, PTC2, interface CON1; disconnected protection switch RV1 two electrodes connect with 5,8 pin of serial loop interface circuit chips U1 and integrated circuit U14 by resistance R 8, R9 respectively; 1,4 pin of integrated circuit U14 connect with interface CON1 by pressure cell PTC1, PTC2, and interface CON1 connects with external communications terminals.When outside answer the call and produce dangerous voltage (for example static etc.) and when causing high pressure output to radio access station, cut off connecting path between the two at once.

As shown in Figure 7, GSM nucleus module circuit theory diagrams in the GSM core processing unit in the utility model radio access station, the GSM nucleus module is installed on the interface CON3, adopt existing mature modules, 19,21,23,25 pin of interface CON3 connect with SIM card seat circuit, 36,40,42 pin of interface CON3 connect with the truck control circuit, and 53,54,55,56 pin of interface CON3 connect with the exterior terminal interface unit.

As shown in Figure 8, truck control circuit schematic diagram in the GSM core processing unit in the utility model radio access station, the truck control circuit comprises operational amplifier U7-A, B, C, D and peripheral circuit, 3 pin of operational amplifier U7-A, 5 pin of operational amplifier U7-B connect with the GSM nucleus module respectively, 2 pin of operational amplifier U7-A, 6 pin of operational amplifier U7-B respectively with the assess station host CPU, 9 pin of operational amplifier U7-C, 11 pin of operational amplifier U7-D connect, 8 pin of operational amplifier U7-C, 12 pin of operational amplifier U7-D connect with the exterior terminal interface unit.Operational amplifier U7-A, B, C, D and external circuit are for controlling the path commutation circuit that assess station host CPU data wire (CPU_TXD, CPU_RXD) is connected with GSM nucleus module data port (RF_TXD, RF_RXD) with outside upgrading computer data mouth (PC_TXD, PC_RXD) respectively respectively.

As shown in Figure 9; SIM card seat circuit theory diagrams in the GSM core processing unit in the utility model radio access station; SIM card seat circuit comprises deck interface CON4, resistance R 19-R21, R46, R49, R53, capacitor C 59; deck interface CON4 connects with interface CON3; the connecting relation of each element is usual adopt a kind of of existing ripe circuit; not the main points of the utility model protection, be not described in detail in this.

As shown in figure 10, power unit circuit schematic diagram in the utility model radio access station, power unit circuit comprises interface CON2, switch S 1, integrated circuit U2, U3, U5, external power source is transformed to the DC9V power supply through adapter with civil power, is input to power subsystem, the DC9V power supply of input through interface CON2 then, one the tunnel through integrated circuit U3 voltage stabilizing processing, the output of generation+5V power supply, handle through integrated circuit U2 and U5 voltage stabilizing on another road, produces the output of VCC and VAMA power supply.

Claims

1, a kind of radio access station is characterized in that: comprise

Carry out the wireless air interface unit of wireless connections with gsm mobile communication system;

Realize the exterior terminal interface unit that radio access station is connected with external communications terminals;

The memory of storage data-message comprises program storage and data storage;

Be responsible for the GSM core processing unit of information exchange between processing wireless air interface and gsm system base station, SIM card seat circuit, the exterior terminal interface unit;

By be connected the user-machine interface that radio access station is carried out software upgrading with external computer;

Memory state information parameter and user-machine interface are implemented control and set up the assess station host CPU that connects with the GSM core processing unit;

The power subsystem of operating voltage is provided for each part mentioned above;

Wireless air interface unit, exterior terminal interface unit, memory, user-machine interface, GSM core processing unit connect with the assess station host CPU respectively.

2, radio access station according to claim 1, it is characterized in that described assess station host CPU connects with the exterior terminal interface unit by the information interface circuit, the assess station host CPU is made up of integrated circuit U4 and peripheral circuit thereof, 2,3,4,5,43 pin of integrated circuit U4 connect with the information interface circuit, 11,13,29 pin of integrated circuit U4 connect with the GSM core processing unit, and 7,8,9,14 pin of integrated circuit U4 connect with the exterior terminal interface unit.

3, radio access station according to claim 2, it is characterized in that described information interface circuit is made up of integrated circuit U8 and peripheral circuit thereof, 9,10,11,12,13 pin of integrated circuit U8 connect with assess station host CPU respective end, and 2,8 pin of integrated circuit U8 connect with the exterior terminal interface unit.

4, radio access station according to claim 3, it is characterized in that described exterior terminal interface unit can make the feed of conventional telecommunications fixed line machine operate as normal and the audio signal of the online dialing of support by output, receive the dual tone multi-frequency dtmf signal, realize serial loop interface circuit chips U1 and peripheral circuit composition thereof that routine call and external call voice channel are straight-through, 14 of serial loop interface circuit chips U1,20 pin connect with the information interface circuit, 14 pin of serial loop interface circuit chips U1 are via capacitor C 24, C41, C45, C48, C49, C51, the language sound filter circuit that send that C52 forms connects with the GSM core processing unit, 15 pin of serial loop interface circuit chips U1 are via capacitor C 28, C30, C31, C32, C33, resistance R 33, R34, R35, the language sound amplifying circuit that is subjected to that arithmetic unit U6-A forms connects 37 of serial loop interface circuit chips U1 with the GSM core processing unit, 41 pin connect with the quick-break switch circuit.

5, radio access station according to claim 4; it is characterized in that described quick-break switch circuit comprises fast tripping protection switch RV1, integrated circuit U14, resistance R 8, R9, pressure cell PTC1, PTC2, interface CON1; disconnected protection switch RV1 two electrodes connect with 5,8 pin of serial loop interface circuit chips U1 and integrated circuit U14 by resistance R 8, R9 respectively; 1,4 pin of integrated circuit U14 connect with interface CON1 by pressure cell PTC1, PTC2, and interface CON1 connects with external communications terminals.

6, radio access station according to claim 5 is characterized in that described external communications terminals is routine call machine or facsimile machine or PC fax terminal.

7, radio access station according to claim 1, it is characterized in that described GSM core processing unit is by realizing between wireless air interface and the gsm system base station or truck control circuit, SIM card seat circuit, the GSM nucleus module of exterior terminal interface unit are formed, truck control circuit, SIM card seat circuit connect with the GSM nucleus module respectively, and the GSM nucleus module connects with exterior terminal interface unit and wireless air interface unit.

8, radio access station according to claim 7, it is characterized in that described truck control circuit comprises operational amplifier U7-A, B, C, D and peripheral circuit, 3 pin of operational amplifier U7-A, 5 pin of operational amplifier U7-B connect with the GSM nucleus module respectively, 2 pin of operational amplifier U7-A, 6 pin of operational amplifier U7-B connect with 9 pin of assess station host CPU, operational amplifier U7-C, 11 pin of operational amplifier U7-D respectively, and 8 pin of operational amplifier U7-C, 12 pin of operational amplifier U7-D connect with the exterior terminal interface unit.