CN100438548C

CN100438548C - Method for implementing analog facsimile service in CDMA system

Info

Publication number: CN100438548C
Application number: CNB2004100717383A
Authority: CN
Inventors: 钟振
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-07-13
Filing date: 2004-07-13
Publication date: 2008-11-26
Anticipated expiration: 2024-07-13
Also published as: CN1722760A

Abstract

The present invention relates to a data service in a CDMA system, which discloses a method for implementing an analog facsimile service in a CDMA system. When the analog facsimile service in the CDMA is implemented, the programming is simple, the sequential control is easy, and the use rate of CPU is low; thus, the integration of the service is easy, and the integrated level of the system can be improved. The method for implementing an analog facsimile service in a CDMA system provided by the proposal of the present invention is realized by adopting Class 2 serial protocols, and a two-stage state machine is adopted in the realization.

Description

In code division multiple access system, realize the method for analog facsimile service

Technical field

The present invention relates to the data service in the cdma system, particularly the analog facsimile service among the CDMA.

Background technology

Code division multiple access (Code Division Multiple Access, abbreviation " CDMA ") system is because its unit capacity is big, the high communication quality, and be convenient to 3G (Third Generation) Moblie (The ThirdGeneration, be called for short " 3G ") system upgrade, the therefore positive important effect of play more and more in mobile communication system.

Present cdma system is basically handling voice service, and flourish along with the internet business, simple conversation can not have been satisfied user's requirement.A lot of users wish that mobile communication system can provide more function, and as entering internet checking or transmission information by mobile phone when needed, organize video conference, carry out remote diagnosis etc., this just requires cdma system that data service can be provided.Cellular Digital Packet Data (Cellular Digital Packet Data with the mobile data network of specialty, be called for short " CDPD ") compare the characteristics that provide in cdma system that data service has that wireless coverage is big, operator's small investment, user can be taken into account multiple business such as voice-and-data.So development CDMA data service upgrades to the 3G system that high-speed integrated business can be provided based on CDMA then earlier, is the developing direction of mobile communication industry.

At " Data Service Options for Wideband Spread Spectrum Systems " is that data service has comparatively detailed description to CDMA among the TIA/EIA/IS-707 (it is tentative standard-707 that Chinese is translated into " the data service option of wide-band spread spectrum system ").According to the TIA/EIA/IS-707 agreement, the CDMA data service is divided into following several types: circuit data service, Packet data service, middling speed Packet Service and CDMA2000 multimedia service.

At present, data service mainly can be divided into following three kinds of business based on the circuit switched type business:

A kind of is asynchronous data, and this is the most basic function of circuit data service among the CDMA, and asynchronous, the full-duplex data connection of point-to-point between the terminal use are provided.On this basis, can realize miscellaneous service, insert as file transmission, Internet etc.

Another kind is a G3 fax, i.e. PC (Personal Computer is called for short " PC ") fax, and the G3 fax is similar with asynchronous data, and the data that different is is transmitted are based on the facsimile data of G3 fax standard.By using this business, PC and a CDMA mobile phone or the fixed station that fax application software has been installed can be installed the PC of fax application software with another or common analog facsimile is sent a fax mutually.

The third is an analogue simulation, what it was different with the G3 fax is, the equipment of mobile side is not PC and be based on (the International Telecommunication UnionTelecommunication Standardization Sector of ITU Telecommunication Standardization Sector, be called for short " ITU-T ") the T.30 standard and the Common Facsimile Machine of standard T.4, need use CDMA fixed station this moment.

What the present invention discussed is exactly above-mentioned analog facsimile service.The control protocol of the employed fax modem of analogue simulation (Fax Modem), International Telecommunication Association (ITU-T) has defined two kinds: by the class of service 1 (Class1) of ITU-TT.31 protocol definition with by the ITU-T class of service 2.0 (Class2.0) of protocol definition T.32.In the process of fax, finish image compression and regeneration (Image Reduction andReproduction), image encoding and decoding (Image Encoding and Decoding), fax session agreement (Fax session protocols) and modulation V agreement and data pick-up High level data link control (Modem V-Protocols, Data Pump HDLC).Data terminal equipment among Class1 and the Class2 (Data Terminal Equipment is called for short " DTE ") and data communications equipment (DataCommunication Equipment is called for short " DCE ") are the work difference that fax modem is responsible for.As shown in Figure 1, in Class2, the image compression of client layer and regeneration and by ITU-T T.4, ITU-T T.5 the image encoding of protocol definition finish by DTE with decoding, T.30 the fax session agreement of protocol definition and the modulation V agreement and the data pick-up High level data link control of physical layer are finished by DCE by ITU-T; In Class1, the image compression of client layer and regeneration, by ITU-T T.4, ITU-T T.5 the image encoding of protocol definition and decoding and by ITU-T T.30 the fax session agreement of protocol definition finish by DTE, the modulation V agreement and the data pick-up High level data link control of physical layer are finished by DCE.Wherein, Class3 shown in Figure 1 does not form official standard as yet.

By above-mentioned explanation as can be seen, Class1 is a minimum performance collection, and all DCE must support; Class2.0 also is made in DCE inside to part fax session agreement, has simplified DTE programmer's development difficulty like this.

Need to prove, an agreement Class2 of industry commercialization cancels in standard before the Class2.0 issue, Class2 and Class2.0 difference are little, but at present a lot of facsimile modulation/demodulation chips are only supported Class2 and are not supported Class2.0, this patent can be supported this two kinds of agreements, simultaneously because historical reasons also have the Class2.1 agreement, also belong to this class, this patent is supported equally.

The agreement of analogue simulation defines in the TIA/EIA/IS-707A.7 agreement, does not give unnecessary details here.The fax modem control protocol that defines in the analogue simulation agreement among the TIA/EIA/IS-707A.7 is to adopt Class1 to realize.

The analogue simulation protocol stack structure that defines among the TIA/EIA/IS-707A.7 as shown in Figure 2.As seen from Figure 2, the protocol layer of the protocol layer of portable terminal 2 types (Mobile Termination 2 is called for short " MT2 ") and IWF (InterWorking Function is called for short " IWF ") is reciprocity, and both protocol processes are very similar.Among the TIA/EIA/IS-707A.7, the protocol layer of the protocol layer of MT2 and IWF is divided into two joints describes, the two processing procedure is similar.Other explanation about this protocol stack can not given unnecessary details at this with reference to concrete agreement.

In actual applications, there is following problem in such scheme: existing scheme adopts Class1 to realize analog facsimile service, the programming more complicated, control ratio is difficult on sequential, to central processing unit (CentralProcessing Unit, being called for short " CPU ") occupancy is than higher, and the integrated level of business integration difficulty and system is not high.

Cause the main cause of this situation to be, at first, Class1 is a minimum performance collection, and the fax session agreement all is the software control by DTE, and therefore programming is complicated, workload is big; Secondly, when adopting Class1, sequencing control in the fax session agreement all needs the programmer to control, relatively more difficult, such as a lot of local time-delay 75ms etc. that need are arranged, especially in wireless system, because system delay is bigger, this difficulty is more outstanding, if improper being easy to of sequencing control gone wrong; The 3rd, when adopting Class1,, the fax session agreement realizes because all being software, therefore unavoidably cause CPU usage higher; The 4th, for DTE, because hardware resource is very limited, the CPU usage height must cause the business integration difficulty; At last, for system, because the CPU usage height, so the integrated level of system just is difficult to improve.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method that realizes analog facsimile service in code division multiple access system, make when in cdma system, realizing analog facsimile service, it is more simple to programme, sequencing control is more prone to and reduces the occupancy of CPU, thereby business integration is more prone to, and level of integrated system is improved.

For achieving the above object, the invention provides a kind of method that in code division multiple access system, realizes analog facsimile service, adopt class of service 2 serial protocols in the fax control to realize the mutual of analog facsimile service signal between portable terminal and the interworking function device, said method comprising the steps of:

After receiving activation message, analog facsimile service transmit leg and analog facsimile service recipient set up analog facsimile service and connect via interworking function device; Described analog facsimile service transmit leg sends the analog facsimile service signal to described interworking function device, described interworking function device with described analog facsimile service signal forwarding to the analog facsimile service recipient;

Wherein said analog facsimile service transmit leg is a portable terminal, and described analog facsimile service recipient is the fixed network side; Or described analog facsimile service transmit leg is the fixed network side, and described analog facsimile service recipient is a portable terminal.

Wherein, the described analog facsimile service of setting up connects and specifically to comprise, analog facsimile service transmit leg and analog facsimile service recipient carry out identification, performance identification and train, and analog facsimile service receive direction analog facsimile service transmit leg sends confirms to receive message.

Described analog facsimile service transmit leg sends the analog facsimile service signal and comprise that further the analog facsimile service transmit leg sends service signal and finishes signaling to interworking function device to described interworking function device, and interworking function device finishes signaling with described service signal and is transmitted to described analog facsimile service recipient.

Interworking function device finishes described service signal further to comprise after signaling is transmitted to described analog facsimile service recipient: after the analog facsimile service recipient receives that service signal finishes signaling, send the received signal response message to interworking function device, interworking function device is transmitted to the analog facsimile service transmit leg with described received signal response message.

Described interworking function device further comprises after described received signal response message is transmitted to the analog facsimile service transmit leg: the analog facsimile service transmit leg sends the link tear down message via interworking function device and sends the analog facsimile service recipient, and the analog facsimile service recipient removes link after receiving the link tear down message.

Wherein, in the analogue simulation protocol layer of described interworking function device, adopt class of service 2 serial protocols in the fax control to realize the analog facsimile service Signal Processing.

In the analogue simulation protocol layer of portable terminal 2 types of described portable terminal, adopt class of service 2 serial protocols in the fax control to realize the analog facsimile service Signal Processing.

Analog facsimile service signal between described portable terminal and the described interworking function device is transmitted by base station/base station controller.

Described analogue simulation protocol layer adopts following steps that the analog facsimile service signal is handled:

Enter the idle or broken string attitude of fax after the A initialization;

B is at described fax under the idle or broken string attitude, if receive " preparing to activate " message then enter the fax command mode, otherwise state is constant;

C is under described fax command mode, if receive " release " message then enter the idle or broken string attitude of described fax, if receive " activate/move and send " message then enter to fax to move and send online attitude, if receive " activate/move and receive " message then enter to fax to move to receive online attitude, otherwise state is constant;

D moves at described fax and sends under the online attitude, if receive " releases " message then enter the idle or attitude that breaks of described fax, if receive " poll " message then enter described fax and move the online attitude of reception, otherwise state is constant;

E moves at described fax and receives under the online attitude, if receive " releases " message then enter the idle or attitude that breaks of described fax, if receive " poll " message then enter described fax and move the online attitude of transmission, otherwise state is constant.

Described fax moves the online attitude of reception and described fax moves in the online attitude of transmission, also comprises the sub-state of secondary, and in the sub-state of described secondary, protocol layer receives the message that comprises class of service 2 response messages, handles and 2 orders of issuing service classification.

By relatively finding, technical scheme difference with the prior art of the present invention is, the method that realizes analog facsimile service in cdma system that the present invention program proposes adopts the Class2 serial protocols to realize, and has adopted the two-stage state machine when realizing.

Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly because the method that realizes analog facsimile service in cdma system that the present invention proposes has adopted the Class2 serial protocols, at first, the treatment of details of a lot of faxes is finished by Modem, therefore programmer's workload significantly reduces, and product is also easier to be stable, thereby has improved development efficiency; Secondly, the sequencing control between the DTE-DCE is that the Modem chip is realized fully, therefore makes sequencing control simplify greatly; Once more, the most of processing finished by hardware, and the occupancy of CPU is reduced greatly than the prior art that adopts Class1, and therefore professional and system integrated easier is significant on engineering.

Description of drawings

The respective protocol that Fig. 1 need finish for DTE and DCE in class of service 1, class of service 2 and the class of service 3 in the analogue simulation and the schematic diagram of relevant treatment;

Fig. 2 is the structural representation of the analogue simulation protocol stack that defines among the TIA/EIA/IS-707A.7;

Fig. 3 is the state transitions schematic diagram according to the first order state machine of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention;

Fig. 4 is the state transitions schematic diagram that moves the online attitude of reception according to the second level state-fax of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention;

Fig. 5 is that the message of inter-entity is transmitted schematic diagram during according to two pages of faxes of mobile reception of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention;

Fig. 6 is the state transitions schematic diagram that moves the online attitude of transmission according to the second level state-fax of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention;

Fig. 7 is that the message of inter-entity is transmitted schematic diagram during according to two pages of faxes of mobile transmission of the method that realizes analog facsimile service in code division multiple access system of a preferred embodiment of the present invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.

Generally speaking, the same with TIA/EIA/IS-707A.7, this patent also is to adopt state machine to realize analog facsimile service, but be different from TIA/EIA/IS-707A.7, this patent adopts the Class2 serial protocols to comprise that agreements such as Class2, Class2.0, Class2.1 are implemented in and realizes analog facsimile service in the cdma system.Because the protocol layer of MT2 and the protocol layer of IWF are reciprocity, both protocol processes are very similar, so only need illustrate that the processing procedure of protocol layer of the protocol layer of MT2 or IWF is just passable.This paper is that example illustrates with the protocol layer of IWF.

Below in conjunction with a specific embodiment of the present invention the present invention program is described.Present embodiment adopts the two-stage state machine to realize analog facsimile service in cdma system.

In a preferred embodiment of the present invention, the state transitions schematic diagram of the first order state machine of the method for realization analog facsimile service as shown in Figure 3 in cdma system.

First order state machine has four kinds of states.First kind is the idle or broken string attitude of fax, also is the IDLE state; Second kind is the fax command mode, also is the CMD state; The third is that fax moves the online attitude of reception, also is the TX state, corresponding to the TX Fax Layer among the TIA/EIA/IS-707A.7; The 4th kind is that fax moves the online attitude of transmission, also is the RX state, corresponding to the RX FaxLayer among the TIA/EIA/IS-707A.7.

The operation principle of the first order state machine of the method that realizes analog facsimile service in cdma system is described below in conjunction with the transfer case of each state in the first order state machine.

In a preferred embodiment of the present invention, after initialization, enter the IDLE state;

Under the IDLE state, if receive " prepare activate " message then enter the CMD state, if receive any other message then keep the IDLE state constant;

Under the CMD state, if receive " release " message then enter the IDLE state, if receive " activate/move send " message then enter the RX state, if receive " activate/move and receive " message then enter the TX state, if receive any other message then keep the CMD state constant;

Under the RX state, if receive " release " message then enter the IDLE state, if receive " poll " message then enter the TX state, if receive any other message then keep the RX state constant;

Under the TX state, if receive " release " message then enter the IDLE state, if receive " poll " message then enter the RX state, if receive any other message then keep the TX state constant.

Need to prove, according to " Data Services Interworking Function Interface forWideband Spread Spectrum Systems " (TIA/EIA/IS-687), Chinese can be translated into " the data business communicating functional interface of wide-band spread spectrum system " (tentative standard-687), two big steps is arranged when professional activating IWF: set up mobile side and connect and set up fixation side and be connected.Above-mentioned " preparing to activate " message receives that " activation " message is received after having set up the fixation side connection after having set up mobile side connection.

In a preferred embodiment of the present invention, RX state and TX state are by second level state refinement.The second level state that those of ordinary skill in the art are appreciated that refinement RX state and TX state also can directly realize in first order state, but this moment system the realization more complicated.

In a preferred embodiment of the present invention, the sub-state transitions schematic diagram of the second level state-TX state of the method for realization analog facsimile service as shown in Figure 4 in cdma system.

Wherein, the TX_WRDIS state is for waiting for remote digital id signal (DigitalIdentificationSignal, abbreviation " DIS ") sub-state is " Wait Remotel DIS Substate ", the TX_WLDCS state is for waiting for local digital command signal (Digital Command Signal, abbreviation " DCS ") sub-state is " Wait Local DCS Substate ", the TX_TRAINING state is " Training Substate " for the sub-state of training, the TX_ITT state is that the image transmission state also can be called " fax page accepting state " i.e. " Image Transfer State ", the TX_PIT state also can be called " back fax page accepting state " i.e. " Post Image Transfer State " for back image transmission state, the TX_MPS state is multipage (MultiPage Signal, abbreviation " MPS ") sub-state is " MPS Substate ", the TX_EOP state is EOP (End ofPage, abbreviation " EOP ") sub-state is " EOP Substate ", the TX_EOM state is the end of message (End of Message, abbreviation " EOM ") sub-state is " EOMSubstate ", and the TX_DS state is " Disconnect Substate " for no connexon state.

Enforcement of the present invention for convenience of explanation, the message of inter-entity is transmitted schematic diagram and is illustrated that fax moves the processing of being carried out in the transfer that receives each sub-state in the online attitude and each sub-state during below in conjunction with two pages of faxes of mobile reception of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention.The message of inter-entity is transmitted schematic diagram as shown in Figure 5 during two pages of faxes of the mobile reception of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention.Oval mark is the Fax Class2 order of committed step among Fig. 5.

Under the TX_WRDIS state, IWF need handle the message that MT2 sends, and comprising: " CSI " (Called SubscriberIdentification, CSI called subscriber identification) message, IWF to " CSI " message analysis after, Modem is issued Class2 order (AT+FLID=); " DIS " (DigitalIdentification Sign al, digital identification signal are used to represent callee's performance) message, IWF to " DIS " message by analysis after, Modem is issued Class2 order (AT+FDIS=).If receive " DIS " message, then Modem is issued Class2 order (ATA) and enters the TX_WLDCS state.

Under the TX_WLDCS state, IWF need handle the message that Modem reports, and comprising: " TSI " (Transmitting Subscriber Identification sends user ID) message is Class2 response (+FTSI :), IWF to " TSI " message analysis after, send to MT2; " DCS " (DigitalCommand Signal, digital controlled signal is used to reply DIS) message is Class2 response (+FDCS :), IWF to " DCS " message analysis after, send to MT2 and subsequently Modem is issued Class2 order (AT+FDR), then enter the TX_TRAINING state.

Under the TX_TRAINING state, IWF need handle the message that MT2 sends, comprise: " CFR " when training process is arranged (Confirmation To Receive, confirm receive) message, IWF receives after this message Modem is issued Class2 order (＜DC2 〉); " CONNECT " message during no training process, IWF receives after this message Modem is issued Class2 order (＜DC2 〉); " FTT " when training process is arranged (Failure To Train, failure to train) message, it is key of the present invention that IWF receives the processing that this message carries out.Need to prove,, be difficult to artificial control training again, therefore receive that here the simplest, the reliable way of " FTT " message is exactly a dismantling call because the Class2 agreement has been made in the Modem chip internal to the negotiation of fax.In a preferred embodiment of the present invention, just adopt the processing method that receives dismantling call after " FTT " message.Under the TX_TRAINING state, then enter the TX_IT state if receive " CFR " message.

Under the TX_IT state, the IWF facsimile data of need eating dishes without rice or wine the Um that the facsimile data of Class2 form changes into TIA/EIA/IS-707A.7 definition, sending to MT2 again, is the response (＜DLE〉＜ETX 〉) of Class2 if receive " EOP " message, then enters the TX_PIT state.

Under the TX_PIT state, IWF need handle the message that Modem reports, and comprising: " MPS " (MultiPage Signal, multipage signal, be used to indicate current page to transmit but also have facsimile data) message be Class2 response (+FET:0), enter the TX_MPS state after receiving this message; " EOM " (End Of Message, transmission of messages is finished) message be Class2 response (+FET:1), enter the TX_EOM state after receiving this message; EOP (End Of Procedures, fax completion) message be Class2 response (+FET:2), enter the TX_EOP state after receiving this message.

Under the TX_MPS state, IWF need handle the message that MT2 sends, comprise: " MCF (Message Confirmation; received signal response; complete signal is received in indication)/RTP (RetrainPositive; training is confirmed again)/RTN (Retrain Negative requires training again) " message, IWF enters the TX_TRAINING state after receiving after this message Modem being issued Class2 order (AT+FDR); " PIN (Procedure Interrupt Negative; transmission is interrupted; indication indication current page receives not to be finished and subsequent transmission needs the operator to interfere)/PIP (ProcedureInterrupt Positive; transmission is interrupted; the indication current page finishes receiving and subsequent transmission needs the operator to interfere) " message, IWF receives to send after this message and tears the chain request open and begin to tear open chain.

Under the TX_EOP state, IWF need handle the message that MT2 sends, and comprising: " MCF/RTP/RTN " message, and IWF issues Class2 order (AT+FDR) to Modem after receiving this message, then enters the TX_TRAINING state; " PIN/PIP " message, IWF receives to send after this message and tears the chain request open and begin to tear open chain.

Under the TX_EOM state, IWF need handle the message that MT2 sends, and comprising: " MCF/RTP/RTN " message, and IWF issues Class2 order (AT+FDR) to Modem after receiving this message, then enters the TX_TRAINING state; " PIN/PIP " message, IWF receives to send after this message and tears the chain request open and begin to tear open chain.

Need explanation, under all states, if receive the Class2 that Modem reports hangup response (+FHNG), all should begin to hang up flow process.

Be familiar with ability in the technical staff can understand, relate in order to simplify, in according to another embodiment of the invention, TX_MPS state, TX_EOP state, TX_EOM state can merge.

In a preferred embodiment of the present invention, the sub-state transitions schematic diagram of the second level state-RX state of the method for realization analog facsimile service as shown in Figure 6 in cdma system.

Wherein, the RX_WLDIS state is for waiting for local DIS state i.e. " Wait Local DISSubstate ", the RX_WRDCS state is for waiting for local DCS state i.e. " Wait Remote DCSSubstate ", the RX_TRAINING state is " Wait Local CFR/FTTSubstate " for the sub-state of training, the RX_IT state is that the image transmission state also can be called " fax page transmit status " i.e. " Image Transfer State ", the RX_PIT state also can be called " back fax page transmit status " i.e. " Post Image Transfer State " for back image transmission state, the RX_MPS state is MPS state i.e. " MPS Substate ", the RX_EOP state is EOP state i.e. " EOP Substate ", the RX_EOM state is EOM state i.e. " EOM Substate ", and the sub-state of RX_DS state terminated call i.e. " End call ".

Enforcement of the present invention for convenience of explanation, the message of inter-entity is transmitted the processing of being carried out in transfer that schematic diagram illustrates each sub-state in the RX state and each sub-state during equally in conjunction with two pages of faxes of mobile transmission of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention.The message of inter-entity is transmitted schematic diagram as shown in Figure 7 during two pages of faxes of the mobile transmission of the method that realizes analog facsimile service in cdma system of a preferred embodiment of the present invention.Oval mark is the Fax Class2 order of committed step among Fig. 7.

In a preferred embodiment of the present invention, IWF promptly during the CMD state in the first order state machine, issues Class2 order (ATD) to Modem before entering the RX_WLDIS state.

Under the RX_WLDIS state, IWF need handle the response that Modem reports, and comprising: " CSI " message is Class2 response (+FCSI :), IWF to " CSI " message analysis after, be transmitted to MT2; " DIS " message is Class2 response (+FDIS :), IWF to " DIS " message analysis after, be transmitted to MT2.If receive " DIS " message, then enter the RX_WRDCS state.

Under the RX_WRDCS state, IWF need handle the message that MT2 sends, and comprising: " TSI " message, IWF to " TSI " message analysis after, issue Class2 order (AT+FLID=) to Modem; " DCS " message, IWF by analysis after, issue Class2 order (AT+FDIS=) to Modem, subsequently, again Modem is issued Class2 order (AT+FDT).Under this state,, then enter the RX_TRAINING state if receive " DCS " message.

Under the RX_TRAINING state, IWF need handle the response that Modem reports, and comprising: " CFR " message is Class2 response (CONNECT), and IWF is transmitted to MT2 after receiving this message, then enters the RX_IT state; " FTT " message be Class2 hangup response (+FHNG), after receiving this message, begin to tear open chain operation.

Under the RX_IT state, IWF need eat dishes without rice or wine the Um of TIA/EIA/IS-707A.7 definition to issue Modem after facsimile data changes into the facsimile data of Class2 form.Under this state, if receive " EOP " message, IWF issues Class2 order (＜DLE〉＜ETX 〉) to Modem, enters the RX_PIT state then.

Under the RX_PIT state, IWF need handle the message that MT2 sends, and comprising: " MPS " message, receive this message after, IWF issues Class2 order (AT+FET=0) to Modem, enters the RX_MPS state then; " EOM " message, receive this message after, IWF issues Class2 order (AT+FET=1) to Modem, enters the RX_EOM state then; " EOP " message, receive this message after, IWF issues Class2 order (AT+FET=2) to Modem, enters the RX_EOP state then.

Under the RX_MPS state, IWF need handle the response that Modem reports, comprise: " MCF/RTP/RTN " message is Class2 response (+FPTS :), and IWF gives MT2 with this forwards, then Modem is issued and enters the RX_TRAINING state after Class2 orders (AT+FDT); " PIN/PIP " message, receive this message after, IWF is transmitted to MT2 with it, and keeps the RX_MPS state constant.

Under the RX_EOM state, IWF need handle the response that Modem reports, comprise: " MCF/RTP/RTN " message is Class2 response (+FPTS :), and IWF gives MT2 with this forwards, then Modem is issued and enters the RX_WRDCS state after Class2 orders (AT+FDT); " PIN/PIP " message, receive this message after, IWF is transmitted to MT2 with it, and keeps the RX_EOM state constant.

Under the RX_EOP state, IWF need handle the response that Modem reports, comprise: " MCF/RTP/RTN " message is Class2 response (+FPTS :), and IWF gives MT2 with this forwards, then Modem is issued and enters the RX_TRAINING state after Class2 orders (AT+FDT); " PIN/PIP " message, receive this message after, IWF is transmitted to MT2 with it, and keeps the RX_MPS state constant.

Need to prove, under above-mentioned all sub-states, if receive the Class2 that Modem reports hangup response (+FHNG), all should begin to hang up flow process.

Those of ordinary skill in the art are appreciated that adopting said method to handle also equally at the MT2 protocol layer can realize analog facsimile service in cdma system.

Like this, by above-mentioned invention scheme, can be implemented in analog facsimile service in the cdma system with the Class2 serial protocols.

In addition, this specification is quoted the relevant portion in the following file, keeps succinct in order to make specification, is not repeating at this:

" Data Services Interworking Function Interface for Wideband SpreadSpectrum Systems " (TIA/EIA/IS-687), Chinese can be translated into " the data business communicating functional interface of wide-band spread spectrum system " (tentative standard-687);

" Data Service Options for Wideband Spread Spectrum Systems " (TIA/EIA/IS-707), Chinese can be translated into " the data service option of wide-band spread spectrum system " (tentative standard-707);

3. " Asynchronous Facsimile DCE Control-Service Class 1 " (ITU-T is T.31), Chinese can be translated into " asynchronous fax communication Equipment Control-class of service 1 " (ITU Telecommunication Standardization Sector is T.31);

4. " Asynchronous Facsimile DCE Control-Service Class 2 " (ITU-T T.32), Chinese can be translated into " asynchronous fax communication Equipment Control-class of service 2 " (ITU Telecommunication Standardization Sector T.32).

Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.

Claims

1. method that in code division multiple access system, realizes analog facsimile service, it is characterized in that, adopt class of service 2 serial protocols in the fax control to realize the mutual of analog facsimile service signal between portable terminal and the interworking function device, said method comprising the steps of:

2, the method that in code division multiple access system, realizes analog facsimile service according to claim 1, it is characterized in that, the described analog facsimile service of setting up connects and specifically to comprise, analog facsimile service transmit leg and analog facsimile service recipient carry out identification, performance identification and train, and analog facsimile service receive direction analog facsimile service transmit leg sends confirms to receive message.

3, the method that in code division multiple access system, realizes analog facsimile service according to claim 1, it is characterized in that, described analog facsimile service transmit leg sends the analog facsimile service signal and comprise that further the analog facsimile service transmit leg sends service signal and finishes signaling to interworking function device to described interworking function device, and interworking function device finishes signaling with described service signal and is transmitted to described analog facsimile service recipient.

4, the method that in code division multiple access system, realizes analog facsimile service according to claim 3, it is characterized in that, interworking function device finishes described service signal further to comprise after signaling is transmitted to described analog facsimile service recipient: after the analog facsimile service recipient receives that service signal finishes signaling, send the received signal response message to interworking function device, interworking function device is transmitted to the analog facsimile service transmit leg with described received signal response message.

5, the method that in code division multiple access system, realizes analog facsimile service according to claim 4, it is characterized in that, described interworking function device further comprises after described received signal response message is transmitted to the analog facsimile service transmit leg: the analog facsimile service transmit leg sends the link tear down message via interworking function device and sends the analog facsimile service recipient, and the analog facsimile service recipient removes link after receiving the link tear down message.

6. according to any described method that in code division multiple access system, realizes analog facsimile service in the claim 1 to 5, it is characterized in that, in the analogue simulation protocol layer of described interworking function device, adopt class of service 2 serial protocols in the fax control to realize the analog facsimile service Signal Processing.

7. according to any described method that in code division multiple access system, realizes analog facsimile service in the claim 1 to 5, it is characterized in that, in the analogue simulation protocol layer of portable terminal 2 types of described portable terminal, adopt class of service 2 serial protocols in the fax control to realize the analog facsimile service Signal Processing.

8. according to any described method that in code division multiple access system, realizes analog facsimile service in the claim 1 to 5, it is characterized in that the analog facsimile service signal between described portable terminal and the described interworking function device is transmitted by base station/base station controller.

9. the method that realizes analog facsimile service in code division multiple access system according to claim 1 is characterized in that, described analogue simulation protocol layer adopts following steps that the analog facsimile service signal is handled:

Enter the idle or broken string attitude of fax after the A initialization;

C is under described fax command mode, " release " message if receive then enter the idle or broken string attitude of described fax, if receive " activate/move and send " message then enter to fax to move and send online attitude, if receive " activate/move and receive " message then enter to fax to move to receive online attitude, otherwise state is constant;

D moves at described fax and sends under the online attitude, " releases " message if receive then enter the idle or attitude that breaks of described fax, if receive " poll " message then enter described fax and move the online attitude of reception, otherwise state is constant;

E moves at described fax and receives under the online attitude, " releases " message if receive then enter the idle or attitude that breaks of described fax, if receive " poll " message then enter described fax and move the online attitude of transmission, otherwise state is constant.

10. the method that in code division multiple access system, realizes analog facsimile service according to claim 9, it is characterized in that, described fax moves the online attitude of reception and described fax moves in the online attitude of transmission, also comprise the sub-state of secondary, in the sub-state of described secondary, protocol layer receives the message that comprises class of service 2 response messages, handles and 2 orders of issuing service classification.