CN102548054A

CN102548054A - Method for designing fixed-line function in 3G (The 3rd Generation Telecommunication) router

Info

Publication number: CN102548054A
Application number: CN2010106190783A
Authority: CN
Inventors: 刘亚良; 刘大文; 郑克龙
Original assignee: XI'AN LONGFEI SOFTWARE CO Ltd
Current assignee: XI'AN LONGFEI SOFTWARE CO Ltd
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2012-07-04

Abstract

The invention discloses a method for designing a fixed-line function in a 3G (The 3rd Generation Telecommunication) router. A USB (Universal Serial Bus) is virtually provided with four ports of a diagnose port, a voice frequency port, a Modem port and an AT port through a built-in software by a 3G module unit, voice data of the voice frequency port can be stored by a main processor unit through a USB port extension unit, after the voice data is subjected to echo cancellation in the main processor unit, and a PCM (Pulse-code Modulation) voice data stream can be switched into two signals of simulating a two-line PSTN (Public Switched Telephone Network) for driving a simulation telephone so as to realize the function of dialing through a 3G network. When different 3G operators are selected by a user, a 3G module with a standard MINI-PCIe (MINI-Peripheral Component Interface Express) interface can be conveniently replaced, and thus, the fixed-line function in the router under the 3G network in other system can be realized.

Description

The method for designing of fixed line function in a kind of 3G router

Technical field

The present invention relates to the communications field, relate in particular to the method for designing of fixed line function in a kind of 3G router.

Background technology

Along with 3G (WCDMA of UNICOM, move TD-SCDMA, telecommunications EVDO) network making the overall arrangement for and the downward modulation of relevant rate at home; The 3G epoch arrive; China is carrying forward vigorously the 3G network development in three big operation commercial cities; It is professional to release multiple wireless Internet access, and the 3G router is as a kind of shared device of network, among also frequently appearing at people's work and living.

Along with the development of 3G router product, the router of 802.11.b/g wireless access and wired access has become the main product of home router.Yet, numerous 3G routers too much data access speed of being absorbed in 3G and WI-FI network and ignored the voice service function of 3G network on service function, the 3G network resource utilization is not high.Though the router that has has increased the fixed line function; But its fixed line unit is directly connected on the 3G module, if after the user has changed the 3G operator of other standards through the special purpose interface on the 3G module; Whole 3G router just has to change, and has caused very big waste economically.

Summary of the invention

To above problem; The present invention proposes the method for designing of fixed line function in a kind of 3G router; Use the design's method to have on the primary processor of PCM and USB interface at the 3G router; Develop the fixed line function easily, the design of standard communication interface between each functional unit, the method is more suitable for grafting applications on different 3G networks.

Goal of the invention of the present invention realizes through following technical scheme:

The method for designing of fixed line function in a kind of 3G router, wherein composition comprises: 3G modular unit (adopting the MINI-PCIE interface), USB port expanding element, main processor unit, SLIC telephone interface unit, pcm interface, telephony interface etc.

Described 3G modular unit adopts the MINI-PCIE interface, and the 3G modular unit is used for realizing the wireless access of 3G network, sets up the 3G wireless data link.Employing standard MINI-PCIE interface is in order to strengthen versatility, to be convenient to change the 3G module of other standards.

Described USB port expanding element; Be in order to increase the USB interface quantity of primary processor, to satisfy the needs that different USB interface equipment connect, the USB port expanding element is that primary processor expands two USB ports among the design; One is used for connecting the 3G module, and another connects the USB memory device.In the router of difference in functionality required, this element can not use.

Described main processor unit, its processing core of 3G router for realizing the fixed line function, must possess PCM and USB port.Pcm interface is used for the SLIC telephony interface, and USB is used for connecting the 3G module.Primary processor is mainly accomplished the work of treatment of moving of speech data and call agreement.

Described SLIC telephone interface unit connects analog telephone and primary processor, with PCM digital coding audio frequency, converts two line PSTN signals into and is used for driving analog telephone.

Described 3G modular unit fictionalizes USB port four ports such as diagnosis, audio frequency, Modem, AT, the speech data of virtual audio port through embedded software; Through the USB port expanding element,, inner through after the echo cancellation at processor unit by the storage of main processor unit Data Receiving; Through the SLIC telephone interface unit; The PCM audio data stream is transformed to simulation two line PSTN signals, is used for driving analog telephone, realize calling function through 3G network.

Beneficial effect of the present invention is following: method for designing of the present invention, realize that principle is simple, and use standard interface between each functional unit, the degree of coupling is little, and transplantability is strong.As long as on the primary processor of other 3G routers, have PCM and USB interface, can utilize this method to realize the fixed line function basically, improve the utilance of 3G network resource.Enrich the function of use of router, therefore be fit to extensively promote.

Description of drawings

Fig. 1 is fixed line of the present invention and networking storage organization functional block diagram;

Fig. 2 is the language data process flow chart that the present invention realizes the fixed line design.

Embodiment

How describe the present invention in detail below in conjunction with accompanying drawing and embodiment realizes:

Fig. 1 illustrates the structure function module map of the method for designing of fixed line function in a kind of 3G router, and this implementation method is made up of 3G modular unit (adopting the MINI-PCIE interface), USB port expanding element, main processor unit, SLIC telephone interface unit etc.

The SLIC telephony interface is connected on the primary processor, and primary processor carries out initial configuration through SPI (Serial Peripheral Interface (SPI)) interface to the SLIC telephony interface, and pcm interface then is used for the transmission of digital speech data.

The USB port expanding element is used for connecting primary processor and 3G module, and the USB mouth of another road expansion is used for connecting the USB memory device, in the 3G router, is used for realizing that network is shared.When not needing circumscribed USB storage equipment in the design, the USB port expanding element can omit, and primary processor directly connects the 3G module through the USB mouth.

The 3G module adopts the MINI-PCIE standard interface, and to strengthen versatility, replaceable is the module of other 3G standards.

Fig. 2 shows the language data process flow chart of realizing the fixed line design, and the form that visible speech data adopts fragmented storage to transmit from figure is handled transmission between each hardware component units.The SLIC telephony interface is accomplished the analog to digital conversion of voice signal, and primary processor is accomplished the reception and the transmission of USB port data in the data buffer zone between the PCM port, the 3G module with speech data according to the 3G protocol processes access 3G network of packing.The voice echo problem of being brought is transmitted in storage, in primary processor and 3G module, adopts tailor-made algorithm to eliminate.

In an embodiment of the present invention; Primary processor adopts RT3050 (integrated WI-FI, network exchange function), and slic circuit adopts SI32171 (integrated DTMF transmitting-receiving number; Feed and ringing current generator), GL850 (general 4 road USB2.0 expanded circuits) is adopted in the USB interface expansion.

After powering on according to the router of embodiment of the invention design, the dialing of RT3050 control 3G module inserts 3G network, and initialization SI32171, makes its generation-48V feed voltage give analog telephone.When the analog telephone off-hook; SI32171 is according to the variation of feed current; Report RT3050 phone off-hook through the SPI interface, RT3050 is provided with SI32171 through the SPI interface and begins to receive the DTMF number, and RT3050 collects the digits after the end; Start inner language data process and the program of moving from the two-way speech data of moving between PCM port and the USB port; Speech data is sent to the 3G module, in module, sends to 3G network according to the packing of 3G protocol processes, has so just realized the up exhalation of analog telephone through 3G network.

When the 3G module received the phone incoming call, the AT port virtual through the 3G module was sent to RT3050 with the AT order, and RT3050 is provided with the SI32171 ring through the SPI port.Behind the analog station off-hook; SI32171 reports RT3050 through the SPI interface; RT3050 start inner language data process and the program of moving from the two-way speech data of moving between PCM port and the USB port, so just realized the descending incoming call of analog telephone through 3G network.

The foregoing description provides to those of ordinary skills and realizes or use of the present invention; Those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.

Claims

1. the method for designing of fixed line function in the 3G router; Comprise: 3G modular unit, USB port expanding element, main processor unit, SLIC telephone interface unit, pcm interface, telephony interface etc. is characterized in that: described main processor unit connects the SLIC telephone interface unit through pcm interface; The 3G modular unit is connected to main processor unit through the USB port expanding element; When inserting the 3G network of different systems, only need the 3G modular unit of replacing standard MINI-PCIe interface.

2. the method for designing of fixed line function in a kind of 3G router according to claim 1; It is characterized in that: described 3G modular unit fictionalizes USB port serial ports such as diagnosis, audio frequency, Modem, AT through embedded software, and the speech data of virtual audio port is through the USB port expanding element; Stored by the main processor unit Data Receiving; Inner at processor unit through after the echo cancellation, through the SLIC telephone interface unit, the PCM audio data stream is transformed to simulation two line PSTN signals; Be used for driving analog telephone, realize calling function through 3G network.

3. the method for designing of fixed line function in a kind of 3G router according to claim 1; It is characterized in that: described main processor unit is through the USB port expanding element; Expand the interface of two USB2.0High-Speed; One of them interface is used for connecting the 3G modular unit, realizes that 3G network inserts; Another connects the USB memory device.

4. the method for designing of fixed line function in a kind of 3G router according to claim 1; It is characterized in that: described pcm interface is used for connecting the SLIC telephone interface unit; The USB expanding element is used for connecting 3G module and primary processor, and primary processor is mainly accomplished the work of treatment of moving of speech data and call agreement.

5. the method for designing of fixed line function in a kind of 3G router according to claim 1; It is characterized in that: described SLIC telephony interface is accomplished the analog to digital conversion of voice signal; Primary processor is accomplished the reception and the transmission of USB port data in the data buffer zone between the PCM port; The 3G module inserts 3G network with speech data according to the packing of 3G protocol processes, and the voice echo problem of being brought is transmitted in storage, in primary processor and 3G module, adopts tailor-made algorithm to eliminate.