CN1254982C - Fixed subscriber unit for radio local loop system - Google Patents

Abstract

When a new call is requested by hooking off a subscriber telephone set 108, a stationary telephone subscriber unit 200 detects a hook-off state and outputs a local dial tone immediately and requests setup of a traffic channel for a radio interface to make radio connection to a base station 104, a base station controller 103 and a local exchange LE 101. Then the unit 200 receives a dial number from the subscriber telephone set 108 and stores it in a queue and sends the dial number stored in the queue to the LE 101 after the establishment of the traffic channel. Immediately after the queue is idle, a voice path between the subscriber telephone set 108 and the LE 101 is open.

Description

The fixed subscriber unit of wireless local loop system and calling thereof the control method that starts

Technical field

The present invention relates to a kind of fixed subscriber unit of wireless local loop system.Especially, the present invention relates to a kind of from fixed subscriber unit send the local dialing tone signal to the method for subsets, the information that receives the method for the dtmf signal that DTMF (dual-tone multifrequency) signal that comes from the subsets that connect and storage receive like this and send relevant dtmf signal from this fixed subscriber unit can most probable early connects the method for the voice-frequency channel between this telephone network and this subscriber phone after setting up wireless communications path to telephone network and between fixed subscriber unit and wireless base station.

Background technology

Design the communication system that adopts fixed subscriber unit (being designated hereinafter simply as " FSU "), is called wireless local loop system (being designated hereinafter simply as " WLL system ") at present, and increased commercial significance in worldwide.

The WLL system be intended that can be in overseas area, particularly wired telephone network also do not extend to the family of developing country of family or commercial facility or the radiotelephone communication in the commercial facility and use.More particularly, replace adopting the telephone line that is called metal wire, the wireless base station is installed in or leans on the central office, road.The wireless base station utilizes cable or wireless channel to be connected to this central office.And, allow to carry out that FSU that phone connects installs at home or in the commercial facility.Utilize wireless replacement metal wire to set up communication between FSU and wireless base station, this wireless base station utilizes cable or wireless channel to receive this central office.Even in the area that the cable telephony network has been set up, for the purpose of laying the local call line cheaply and easily, advised using the WLL system.In the translation of Japanese Patent Application 9-322254 and open (PCT) 9510337 of Japan Patent, narrated the WLL system.

The WLL system design connects subsets and this telephone network for using radio communication device.Specifically, by using FSU, use this radio communication device, the common electrical phone can be connected with telephone network.Wish this WLL system make from the user carry out the phone off-hook in case originating call the time be carved into minimum time lag in the moment in dialing tone signal when output so that allow the user know that dialing is possible.

The WLL system configuration:

Fig. 1 represents the WLL system configuration.

Telephone service transmits by the public switch telephone network (being designated hereinafter simply as " PSTN ") as telephone network.PSTN100 generally is responsible for the monitoring user telephone set, and carries out route and send custom calling service between a plurality of users.Local switch (hereinafter to be referred as " LE ") 101 is as the end of PSTN100.

When receiving incoming call, LE101 sends this calling and gives thereby called local user to local user and output alerting signal (or call signal).Subsequently, LE101 detects replying, set up transmission path between remaining PSTN100 and the local user, utilizing PSTN100 to send end of calling to indicate to the LE of calling party and produce the station message recording of called local user.When outgoing call is started in request, when detecting the user when hook switch picks up the telephone machine, LE101 output dialing tone signal, so indicating call request.And LE101 receives and analyzes dialing signal from calling party output, send this callings in distant callee, detect replying, setting up transmission path and generation station message recording between callee and all the other PSTN100 from the callee.And LE101 carries out other miscellaneous function usually, and these functions are important to this user, such as maintenance, meeting, pass on and Call Waiting indication or the like.

In the narration below, should understand predetermined each telephone set that is applied to a plurality of subsets in the WLL system of the explanation of relevant unique user telephone set.

Wire telephone 102 is received LE101 through local line (being designated hereinafter simply as " metal wire local loop ") 110 or the process WLL system 109 that is made of metal wire.WLL subsets (abbreviating " subsets " below as) 108 can be the common standard telephone sets identical with wire telephone 102.Subsets 108 are received FSU107 by the metal wire circuit (being designated hereinafter simply as " metal wire loop ") 113 with the electrical characteristics that are similar to metal wire local loop 110.FSU107 plays a part to be inserted in the converter between wave point 112 and the metal wire 113, and through socket 114 local powers.

FSU107 is connected with wave point 112 through wireless antenna 106.Wave point 112 can be various Radio interface protocols, as any one interface in PHS, DECT, PACS, GSM, AMPS, CDMA or any other standardized/appropriate interface.

Wave point 112 is received the antenna 105 relevant with base station (being designated hereinafter simply as " BS ") 104, base station 104 support to be similar to and with the Radio interface protocols of the Radio interface protocols compatibility of FSU107.BS104 receives base station controller (being designated hereinafter simply as " BBC ") 103, and the latter is access network interface 111 again, thereby is connected with LE101 through the local switch interface.Network interface 111 can have one or several metal wire of being similar to metal wire local loop 110, by one or several digital multiplex interface of open standard definition, such as MercuryT1067, Bellcore GR-303 or ITU V5.1 or V5.2 or appropriate interface.

In all situations of the local switch of access network interface 111, the function of WLL system 109 be by provide be equivalent to offer wire telephone 102 business to subsets 108, and provide the user of identical operations characteristic to telephone 102 and the user of subsets 108.

When subsets 108 when the on-hook idle condition is converted to the off-hook operating state, begin to start from the new calling of subsets 108.The user of operation subsets 108 waited for the dialing tone signal before dialing callee's telephone number.There are two kinds of possibilities to consider.

(example A:LE101 output dialing tone signal)

FSU107 detects the off hook state of subsets 108, and process wave point 112 request BSC103 set up the transmission path between LE101 and the subsets 108.This transmission paths comprises following two sections:

The 1st section: the wave point 112 between FSU107 and the BS104.

The traffic channel of wave point is by sharing between a plurality of users and having a limited capacity.Traffic channel dynamically distributes on the basis of each calling usually.Between FSU107 and BSC103, consult to distribute traffic channel to use several seconds time possibly by using publicly available interface protocol.

The 2nd section: the network interface 111 between LE101 and the BSC103.

After LE101 being carried out new call origination request, BSC103 sets up transmission path on this section in short time durations.

In this example, can be interpreted as " dialing tone hysteresis " by the user with the 1st section relevant hysteresis, and can have the effect of making this user angry.Dialing tone lags behind and hinders the realization of the design object that the WLL traffic performance that is equivalent to telephone is provided.Owing to can not reduce basically with the 1st section relevant hysteresis, necessarily require another technology to reduce this hysteresis.

After dialing tone lags behind, set up whole transmission path at last.The user is hearing in the dialing tone signal of LE101 output and can dial phone number.At dialing signal is that common push-button dialing signal is that dtmf signal sends on available transmission paths new between FSU107 and the LE101 under the situation of signal of Dual Tone Multifrequency sound form.

LE101 can receive and translate this dialed number, and exports the signal tone (being designated hereinafter simply as " process sound ") of relevant this calling or other replying is provided.For example, if dialed number comprises 7, then LE101 typically keeps static during dial action, provides busy tone or ring-back tone then after finishing dialing.If undesirable long pause or incorrect dial train during dial-up operation, occur, LE101 then the notice by using high speed busy tone, record, howler tone, second diali tone or other similar processing to the abnormal conditions of this user report telephone set.The purpose that adopts such single-tone or processing is an intelligible feedback to be provided for immediately the user of dialing, if and dialing is successful, make telephone set enter the end of calling state immediately, if perhaps dialing is unsuccessful, then urge the user to carry out correct action immediately, such as redialing.

(example B:FSU107 output dialing tone signal)

FSU107 detects the off hook state of subsets 108, and sends request to BCS103 through wave point 112, is used to set up the continuous transmission path between LE101 and the subsets 108.This transmission path comprises following two sections:

The 1st section: the wave point 112 between FSU107 and the BS104.

The wave point traffic channel is shared between a plurality of users and is had a limited capacity.Traffic channel dynamically distributes on the basis of each calling usually.Use publicly available interface protocol between FSU107 and BSC103, to distribute traffic channel to spend several seconds possibly through consultation.

The 2nd section: the network interface 111 between LE101 and the BSC103.

After LE101 carries out new call origination request, BSC103 sets up transmission path on this section in short time durations.

But in this case, when detecting off hook state, FSU107 sends the local dialing tone signal immediately and concurrently to subsets 108.When hearing the dialing tone signal, the user enters dial-up operation.But, because at this moment the 1st section wave point traffic channel is not also set up, so dialed number can not send to LE101.Therefore, FSU107 must detect and store this dialed number with the form of dtmf signal, and must send whole group dialed number of such collection in the time after a while.

At the time durations of collecting dialed number, after setting up network interface between the network interface in traffic channel in the 1st section and the 2nd section, FSU107 must prevent the leakage of any dtmf signal that may dial by blocking transmission between (promptly preventing) subsets 108 and the wave point 112.When the dialing sequence number finished, all dialed numbers that are stored among the FSU107 were all exported to LE101, set up transmission path among the FSU107 between subsets 108 and wave point 112 then.

Example B has big advantage than example A and is: immediately following after off hook state detects and do not comprise and set up the hysteresis that traffic channel causes, the dialing tone signal is just exported to the user.But, example B requires to determine the end of dialing sequence and determine to be stored in the timing that all dialed numbers among the FSU were sent out and set up transmission path, therefore is created in dialing and connects the slow new cause of transmission path delay (being designated hereinafter simply as " connection time delay ") afterwards.

Have enough abilities analyze wherein the dialed number of storage, with they with the rule comparison of control dial string information and the figure place that determines whether to receive sufficient amount so that the declaration dialing finishes, this is unpractiaca for FSU107.Therefore, usually, the interdigit timing device (inter-digital timer) that FSU107 is used to measure the interval between dialed digit and the timeout threshold comes definite end of dialling.Determine method according to this, when the interval of the digital back of dialing (i.e. time between the dialing) when surpassing certain value, expression (or determining) dialing finishes, and output is stored in all dialed numbers among the FSU.

If should set at interval too shortly, then the user may run into a problem: suspended unintentionally by this user before dialing follow-up numeral and cause too early output function.New numeral can not send, therefore the interruption that produces dial string.On the contrary, long if this is provided with at interval, connect up to the call transfer path during then the user will wait for long time after the last dialed digit of input.And, before last output function is carried out, there is not dialed digit to arrive LE101, therefore during dial action, the user does not receive any feedback of call proceeding from LE101.Therefore, the user feels long and unhappy quiescent period during dial-up operation.

As mentioned above, so that eliminate under the situation of dial-tone delay, a new problem may appear in FSU107 output local dialing tone signal: be connected time delay when determining the timing of setting up transmission path (as voice-frequency channel) between user and the telephone network.

Summary of the invention

The present invention has expressed according to the afore-mentioned in the correlation technique, and the purpose of this invention is to provide a kind of fixed subscriber unit that is used for wireless local loop system, it is when connecting the telephone set originating call, can use the local dialing tone signal to reduce dial-tone delay, be equivalent to the telephone service that on public wired telephone network, provides by eliminating the problem minimizing connection time delay relevant and providing with the transmission path connection.

The invention provides: a kind of method of giving subsets from the fixed subscriber unit Sending dialled number tone signal of wireless local loop system; It is a kind of that subsets receive and the method for storage dtmf signal from connecting; And a kind of information of exporting relevant dtmf signal from fixed subscriber unit can be connected the method for the audio path between this telephone network and the subsets after giving telephone network and set up radio communication between this fixed subscriber unit and wireless base station as early as possible.And the present invention solves the problem relevant with distinctive traffic operation, and these operations will be narrated in the back, such as the off hook state of not meaning it, the operation of industrial siding automatic ringback, flicker operation, the response operation and the operation of taking out stitches again.

About the design of fixed subscriber unit, the operation as the call control procedure narration realizes minimum dial-tone delay and minimum connection delay in example A and B by handling.According to the present invention, provide a kind of local dialing tone signal of in the enough closing characteristics that keep the wave point traffic channel, using to reduce the method for dial-tone delay.

According to a first aspect of the invention, provide a kind of calling that is used for the fixed subscriber unit of wireless local loop system control method that starts, comprise the following steps:

The new calling of response user is started and is sent the local dialing tone signal immediately,

The radio base station that is connected with telephone network for wireless connections is to the purpose of local switch, and the wave point traffic channel is set up in request,

The dialed digit that receives and line up and import from the user,

According to the first in first out scheme, and after setting up traffic channel, export the dialed digit that is stored in this formation and give local switch, come the digital formation of emptying storage,

Prevent the transmission between this user and the local switch,

Take out by output the digital formation of storage in their emptyings, receive continuously new dialed digit in this formation and

Digital formation in storage becomes the voice-frequency channel that is used for transmission destination between empty these subsets of demand working afterwards and the local switch.

Aspect this, call out the control device that starts and export the local dialing tone signal immediately to subsets, and the dialed digit that output receives from subsets in to the dialed digit queuing.When the numeral owing to the output storage makes the digital formation of storage become empty, the voice-frequency channel between connecting subscribers participating telephone set and the local switch.The result, carry out at the telephone set that utilize to connect and to call out when starting operation, reduced from the time that the user makes telephone set be in off hook state and heard the hysteresis between time of dialing tone up to the user and export to hysteresis between time of telephone network from the time that dial train finishes up to dialed digit.As a result, reduce dial-tone delay, eliminated and connected the relevant problem of transmission path, and reduced the connection time delay.Therefore, can provide the telephone service that provides by public telephone line is provided.

According to a further aspect in the invention, provide a kind of calling that is used for the fixed subscriber unit of wireless local loop system control method that starts, comprise the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

For the purpose of the radio base station of telephone network to local switch received in wireless connections, the request set up the wave point traffic channel and

But, then be used for the voice-frequency channel of transmission destination between connecting subscribers participating telephone set and the local switch if do not dial phone number in during the preset time of field programming.

In this regard, if after radio communication is set up, do not dial phone number in during preset time, for example, if inadvertently make subsets enter continuous off hook state at the fixed time once in a while, then call out the control device that starts eliminate dialing tone and set up subsets and local switch between voice-frequency channel so that the user can hear the telephone network signal tone.The result, as utilize the situation of common wired telephone line, if subsets remain on off hook state continuously, can from telephone network, transmit such as the alarm signal sound of the busy tone or the sound of howling and give the user, thereby cause that the user notes and makes the user that mobile phone is put back to hook state.

A kind of fixed subscriber unit of user antenna local loop is provided according to a further aspect of the invention,

The calling control method that starts comprises the following steps: to respond new calling of user and starts and send immediately

Local ringing tone signal,

The wave point traffic channel is set up in request, so as wireless connections receive the antenna electricity base station of telephone network and local switch and

Eliminate the voice-frequency channel that is used for transmission destination between ring-back tone and connecting subscribers participating telephone set and the local switch.

In this respect, when subsets enter off hook state, the calling signal that control device sends off hook state that starts is given local switch, and this switch automatically connects the telephone set of subsets to predetermined callee then, thereby realizes so-called industrial siding automatic ringback operation.After setting up radio communication, eliminate the local ring-back tone that produces, and between subsets and local switch, set up voice-frequency channel, therefore make the user can hear the sound of telephone network.As a result, as in the situation of common wire telephone, the user can hear telephone network ring-back tone or session immediately.

According to another aspect of the invention, a kind of calling that is used for the fixed subscriber unit of wireless local loop system control method that starts is provided, comprise the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

For the purpose of the radio base station of telephone network to local switch received in wireless connections, the wave point traffic channel is set up in request,

Eliminate the dialing tone signal, if but and in the predetermined time period of field programming, do not dial phone number, then between connecting subscribers participating telephone set and the local switch for the voice-frequency channel of transmission destination and

But after the other predetermined time period of field programming, make subscriber unit enter stand-by state, thereby discharge traffic channel.

In this respect, do not dial phone number in the predetermined time period after setting up radio communication and crossed under the situation of other time durations, the calling control device that starts discharges the wave point traffic channel, thereby closes voice-frequency channel and stop radio communication.As a result, if subsets do not enter hook state after during preset time, then prevent useless radio communication.

According to a further aspect in the invention, provide a kind of calling that is used for the fixed subscriber unit of wireless local loop system control method that starts, comprise the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately;

The of short duration conversion from the off hook state to the hook state during stable calls think this calling continuation and

Receive the purpose of the wireless base station and the local switch of telephone network for wireless connections, continue to set up the wave point traffic channel, therefore prevented the input of dialing tone signal or dialed digit, wherein,

But the duration of the hook state of handling as the continuation of stable calls is corresponding to the predetermined time period at field programming, and depends on that this stable calls is incoming call or outgoing call.

Aspect this, when subsets during the calling only during the preset time when the stabilized communication state enters hook state and turn back to off hook state, this calling control device that starts stops to export the dialing tone signal, continue to set up the wave point traffic channel, so that keep the continuous of voice-frequency channel, and will change as the processing of proceeding of calling out.Therefore, as in the situation of common wire telephone, can carry out the flicker conversion, utilize of short duration hook switch action to activate characteristic therein,, carry out response operation again when perhaps telephone set enters off hook state during the short time such as maintenance, meeting or transfer.

Best, of the present invention any aforementioned aspect in, a system beyond fixed subscriber unit and the wireless local loop system is relevant, wireless local loop system may cause delay when setting up traffic channel.

According to another aspect of the invention, a kind of fixed subscriber unit of wireless local loop system is provided, communicating by letter between this wireless local loop system is set up between subsets and local switch, and the wireless base station of receiving telephone network by wireless connections provides telephone service to local switch, and this unit comprises:

The off-hook detection device is used to detect the off hook state of the subsets that will connect;

The dialing tone output device is exported the dialing tone signal according to the testing result of being undertaken by the off-hook detection device and is given these subsets;

The DTMF checkout gear is used to detect output and the dtmf signal that comprise dialed digit from these subsets;

The dialing information storage device, memory dialing information on the basis of the dtmf signal that detects;

The dtmf signal generation device produces dtmf signal on the basis of dialing information storage device content; With

The calling control device that starts, it just activates and makes the dtmf signal generation device to produce dtmf signal after the radio communication of setting up between this wireless base station and the fixed subscriber unit, and the output dtmf signal is given this wireless base station.

In this respect, when detecting the off hook state of subsets, dialing tone output device output dialing tone signal is given these subsets.Storage is from the dialing information based on this dtmf signal of this subsets output.Immediately following set up radio communication between wireless base station and fixed subscriber unit after, this calling is started, and control device produces dtmf signal on the basis of the dialing information content of storage and the output dtmf signal is given the wireless base station.As a result, when the telephone set originating call that connects, reduce dial-tone delay, eliminated and connected the relevant problem of transmission path, be connected time delay, therefore provide the telephone service that provides by ordinary telephone line is provided with minimizing.

Be preferably in described any aspect of the present invention,, call out and start control device with regard to the voice-frequency channel between connecting subscribers participating telephone set and the local switch in case be stored in dialing information emptying in the dialing information storage device.

In this respect, and connect voice-frequency channel in the foundation of when operation radio communication that starts in calling, therefore reduce to connect time delay.

In aforesaid either side of the present invention, fixed subscriber unit also comprises the control device that do not dial.In the time of when exported the predetermined time period of dialing tone signal after giving subsets at the dialing tone output device in, can not detecting from dtmf signal that subsets are exported, and when between subsets and wireless base station, setting up radio communication, the control device that do not dial is connected the voice-frequency channel between local switch and the subsets, thereby makes this user can hear the signal tone of telephone network.

In this respect, if do not detect from the dtmf signal of subsets output in the predetermined time period after output dialing tone signal, the control device that do not dial is thought and is not also dialed phone number, and therefore connects the voice-frequency channel between local switch and the subsets.The result, as in the situation of common telephone line,, then make the user can hear telephone network prompting sound if this telephone set remains on off hook state unceasingly, such as busy tone or howler tone, thereby to attract user's attention and urge him to make telephone set be hook state.

In aforementioned either side of the present invention, fixed subscriber unit also comprises not dialing time modifier, and it changes the dtmf signal detection time that requires after the output of dialing tone signal, dial phone number so that determine whether.

In this respect, the input time modifier of not dialling can change after the dialing tone signal dtmf signal detection time that requires, so that determine whether to dial phone number, thereby to change dtmf signal detection time according to system configuration or state be random time.

In aforementioned either side of the present invention, fixed subscriber unit also comprises wireless finishing control device.If after output dialing tone signal, require to detect time from the dtmf signal of subsets connect when finishing between after the frequency path, do not detect the off hook state of subsets, wireless finishing control device stopped radio communication after the past during preset time, thereby discharged voice-frequency channel.

In this respect, if do not detect the hook state of subsets after connecting voice-frequency channel and during the preset time after in the past, wireless finishing control device stops radio communication and release voice-frequency channel.As a result, if subsets do not enter off hook state in during preset time, can avoid useless radio communication.

In the either side of the invention described above, fixed subscriber unit also comprises wireless concluding time modifier.If do not detect the hook state of subsets, wireless concluding time modifier changes the time so that stop wireless energy letter.

In this respect, wireless concluding time modifier can change the termination time, as mentioned above, thereby makes the termination time can be set at random time according to system configuration or state.

In the either side of the invention described above, fixed subscriber unit also comprises replys control device again.In response to subsets after set up radio communication between wireless base station receipt of call, fixed subscriber unit and the wireless base station and between local switch and subsets, set up voice-frequency channel, subsets enter off hook state and at the fixed time during in turn back to hook state.In this case, fixed subscriber unit itself is not exported the dialing tone signal and is given subsets, continue to set up radio communication between wireless base station and the fixed subscriber unit and reply control device again, and set up voice-frequency channel between local transform machine and the subsets, thereby make the user can hear the telephone network signal tone.

In this respect, if subsets enter hook state, and turn back to off hook state in the predetermined time period during session, reply control device again and continue to set up radio communication between wireless communications station and the fixed subscriber unit, and connect the voice-frequency channel between local switch and the subsets.As in the situation of common telephone line, if subsets enter hook state at of short duration time durations, if callee's telephone set still remains on off hook state, then subsets can restart session.If callee's telephone set enters hook state, by not interrupting current communication path with the local switch exchange of audio signals, subsets can start and newly call out.

In the either side of the invention described above, fixed subscriber unit also comprises replys the control invalidation means again, and it prevents to reply the startup of control device again.

In this respect, even subsets enter off-hook during blink, reply calling that the control invalidation means can carry out this user to be similar to new calling the to be started operation of starting again.

In the either side of the invention described above, fixed subscriber unit also comprises DTMF output timing control apparatus.When the calling control device that starts activates the dtmf signal generation device and produces dtmf signal and export dtmf signal when giving the wireless base station, DTMF output timing control apparatus control output regularly, make predetermined time period back output in the past dtmf signal after the radio communication of setting up between subsets and the wireless base station, this is the state of the telephone network of considering that dtmf signal is input to.

In this respect, time the output timing up to the time of output dtmf signal between of DTMF output-controlling device control from setting up the radio communication between wireless base station and the subscriber phone unit.This output timing is set according to the requirement of the telephone network that dtmf signal is input to.Therefore, after radio communication was set up, telephone network can be determined reliably from the dtmf signal of fixed subscriber unit output.

Best, in the fixed subscriber unit of wireless local loop system, the PHS air interface of being used together by air interface standard RS STD-28 or any other air interface of ARIB (radio industry association) regulation is used for wireless local loop system.

Description of drawings

Fig. 1 is the functional-block diagram of expression WLL system configuration;

Fig. 2 is the functional-block diagram of expression FSU structure;

Fig. 3 is the functional-block diagram of another example of expression FSU structure;

Fig. 4 is described in the relevant new flow chart of calling out the operation of the sequence that starts in the present invention's first pattern;

Fig. 5 is described in the present invention's second pattern after subsets enter hook state, the flow chart of the sequence of operation of carrying out when the user does not dial phone number;

Fig. 6 is the flow chart that is described in the sequence of operation of carrying out when the user does not dial phone number after the voice-frequency channel that utilizes timer T1 to determine is set up in the three-mode of the present invention;

Fig. 7 is the flow chart that is illustrated in the sequence of operation of relevant industrial siding automatic ringback operation in the present invention's four-mode;

Fig. 8 is illustrated in the present invention's the 5th pattern because the relevant flow chart that distributes the sequence of operation of traffic channel automatically of the result that the time durations of timer T2 finishes;

Fig. 9 is illustrated in the present invention's the 6th pattern about the flicker and the flow chart of the sequence of operation of response operation again;

Figure 10 is the flow chart that is illustrated in the 7th pattern of the present invention about the sequence of operation of taking out stitches and starting again; With

Figure 11 is the flow chart that is illustrated in the sequence of operation that relevant timing of exporting dialed digit changes in the present invention's the 8th pattern.

Embodiment

Referring to the best mode of operation of accompanying drawing narration the present invention.

The telephone network that comprises the WLL system has all structures as shown in Figure 1.Utilize public switch telephone network as telephone network (below abbreviate " PSTN " as or be also referred to as " network ") 100 between the user, to provide telephone service by circuit switched or signal transmission.Local switch (LE) 101 is placed on PSTN 100 1 ends, and public wire telephone 102 is received LE101 through metal wire local loop 110.And the base station controller of WLL system 109 (BSC) 103 is received LE101 through network interface 111.BSC103 receives base station (BS) 104 again.LE101 and BSC103 are placed on the central office, but BS104 is placed on the outside, central office usually.

BS104 utilizes wireless antenna 105, wave point 111 and wireless antenna 106 to receive fixed subscriber unit (FSU) 107 through radio communication device, so that set up wireless connections (or radio communication) between BS104 and FSU107.The subsets 108 that are similar to wire telephone 102 are received FSU107 through metal wire loop face 103, and these metal wire loop electrical characteristics are similar to metal wire local loop 110.FSU107 places at home or is provided power supply in the business setting and through socket 117.Wireless antenna 105 is placed on 104 outsides, base station, and wireless antenna 106 is placed on the FSU107 outside.The line loop that has that comprises metal wire can replace such as optical fiber with other wireline interface.And FSU107 and subsets 108 can link together through wave point.

Best, wave point 112 can be made of interface or other interfaces in the PHS chamber that meets the air interface standard RS STD-28 that is stipulated by ARIB (radio industry association).

The FSU functional description:

Fig. 2 is the functional-block diagram of expression FSU structure.In this drawing, whole FSU200 is with box indicating.

FSU200 has an external interface, comprises telephone 213, power line 214 and wireless antenna 212.Power supply 201 comprises power circuit and call signal generator, and it provides internal logic voltage, be used for conversing and the power supply of monitoring telephone line through telephone wire, and call signal voltage.The telephony interface 203 that comprises telephone line interface and hybrid circuit comprises the off-hook detection circuit and the dialing testing circuit of an audio codec circuit, telephone line circuitry, formation off-hook detection device.Telephony interface 203 carries out off-hook to subsets 213 feeds, monitoring user telephone set 213, apply call signal voltage gives subsets 213 and uses hybrid circuit to separate calling (transmission) and outgoing (reception) voice-frequency channel as transmission path.

A-D converter (A/D) 207 conversion are digital signal from the simulation transmission audio signal of subsets 213 outputs.The digital audio and video signals that digital-to-analog converter (D/A) 208 conversion receive is a simulated audio signal.Dtmf signal receiving unit 204 is as the DTMF checkout gear, is used for detecting from the dialed digit (being dtmf signal) of the number format of the signal of A-D converter 207 outputs.Dtmf signal produces part 205 and has the function of DTMF generation device, is used to produce dtmf signal figure pattern, the relevant dialed digit that receives like this.A-D converter 207, dtmf signal receiving unit 204 and DTMF produce signal section 205 and receive wave point 206 through switch S 1 209.

Call progress tones signal generator 211 sends a plurality of signal tones such as digital tone signal or digital ringing tone signal (being the call proceeding tone signal) and gives user's RX path.Wave point 206 is set up about audio frequency traffic of all layers of Radio interface protocols and control traffic (being traffic channel), thereby can aloft make and be connected to BS 104 between the traffic channel.Wave point 206 and call progress tones signal generator 211 are connected to digital-to-analog converter 208 through switch S 2 210.

Switch S 1 209 determines that wave point 306 is to receive audio user signal or the inner dtmf signal that produces.Switch S 2 210 determines that user 213 is the audio signals by wave point 206 receptions that receive the inner dialing tone signal that produces or send on traffic channel.The switch motion of switch S 1 and S2 utilizes software to control.

The control section 202 that comprises controller and memory has the dialing tone signal output apparatus and the function of the control device that starts, and uses logical operation and the control in real time of carrying out whole WLL system according to the microprocessor that is stored in procedure operation wherein.Control section 202 has the I/O coupling part corresponding to all other functional blocks, so that judge the function of all features of FSU.Control section 202 has the function of dialing information storage device, is used to store the operation logic of the programming of FSU, temporary transient performance variable and the dialed number of the temporary transient storage that receives from subsets 203.

Fig. 3 represents another example of FSU structure.As external interface, FSU300 comprises antenna connector 301 and telephone wire connector 302.Wireless antenna 106 is received antenna connector 301, and subsets 108 are received telephone wire connector 302.Power line 303 is connected to interior power supply circuit 302 and the power supply that provides from the outside is provided.The power supply that provides is like this presented each several part to FSU300 from power circuit 304.

As the functional block that constitutes electronic circuit, FSU300 is made of radio-circuit 305, controlled in wireless part 306, channel coding-decoder part 307, control section 308, telephone wire processing section 309 and memory 400.Radio-circuit 305 has built-in synthesizer, and it produces the signal of preset frequency.When receiving the instruction that is used for frequency and transmission/reception timing from controlled in wireless part 306, radio-circuit 305 sends or receiving radio datas.Controlled in wireless part 306 control radio-circuits 305 are to set up the radio communication between FSU300 and the BS104.Controlled in wireless part 306 is determined from the incoming level of the wireless data of BS104 reception, and as the incoming level data this incoming level is write in the memory 400 that temporarily stores in memory or the control section 308.

The data that channel coding-decoder part 307 consolidations send or receive on the control of wave point or communication channel.The dtmf signal that holds in the channel coding-decoder part 307 as the dtmf signal generation device produces circuit 307a, is used to produce dtmf signal.Go up the data that send or receive in communication channel (being traffic channel) and comprise audio-frequency information such as speech or signal tone, reach the control information of handling by control section 308.Directly carry out signal processing in the audio codec circuit of voice data in telephone wire processing section 309, and not by control section 308.Except audio codec circuit and telephone line circuitry, telephone wire processing section 309 comprises: off-hook/on-hook signal state detection circuit 309a, this circuit 309a are used to detect the off-hook and the hook state of telephone set as the off-hook detection device; Tone signal produces circuit 309b, and it produces signal tone, such as dialing tone; With dialing testing circuit 309c,, be used to detect the telephone number of dialing by the user as the dtmf signal checkout gear.

Control section 308 comprises a microprocessor, and control WLL system is all.And control section 308 has dialing tone output device and the calling control device that starts, and monitor and control subsets 108 and BS104 between transfer of data, therefore carry out the various sequences relevant with call.Memory 400 preferably is made of nonvolatile memory, and storage radio communication desired information, and such as catching (or tracking) desired information in base station, the number that storage is dialed by the user is as dialing information and storing various information item.

Narrate the various operator schemes of the WLL system of FSU used according to the invention (following is utilized label 200 expressions) below.

(first pattern: the new calling started)

Fig. 4 is illustrated in first pattern of WLL system about new message and the incident flow process that starts of calling out.In the whole operation key diagram of Fig. 4 back, three logical constitution unit are expressed as follows: promptly the most left vertical line is represented subsets 108; The central vertical line is represented FSU200; The rightest vertical line is represented BS104, BSC103 and LE101.In operating instruction figure, between three vertical lines, exchange messages and signal.For simplicity, BS104, BSC103 and LE101 treat as single logic composition entity (being radio switching device).It should be understood that wave point association justice terminates in BS104 and BSC103, and for for the purpose of illustrating, these component units are transparent for the audio signal that flows through the media that terminates in LE101 (for example network interface 111 etc.).And BSC103 sends the information of relevant predetermined signaling indication (as the hook switch state) and gives LE101 and do not issue FSU200.

Following narration is to have registered by the location registers sequence according to the position of such supposition: FSU200 and BS104, and they have prepared to start or receipt of call.The operation of FSU200 is by internal control part 202 and 308 (following simply with label 200 expressions) control.

When entering, subsets 108 begin this sequence when off hook state starts with the calling that please look for novelty.When detecting the off hook state of subsets 108, FSU200 begins the connection request process at most probable in the short response time (in during 200ms).The connection request process comprises: BS104 and BSC103 distribute the wave point traffic channel; The dialing tone signal (being also referred to as " network dial tone signal " below) that request produces from LE101 in this network with BSC103.In fact side by side, FSU200 provides the inner local dialing tone signal that produces (below be also referred to as " local dialing tone signal ") to give subsets 108.When the user responded the local dialing tone signal and begins to dial phone number, dialed number inputed to FSU200 with the dtmf signal form.FSU200 detects the dtmf signal of input like this and it is stored into internal storage.Time point when the first dialing tone pulse inputs to FSU200, FSU200 stops exporting to the dialing tone signal of subsets.

Because the result of connection request process may distribute the wave point traffic channel, and set up wireless connections (being radio communication) in the past after several seconds.BSC103 detects and reports that to FSU200 this network dial tone signal is available.Utilize this two startup incidents, FSU200 is switched to the calling transmission path of LE101 at least.But at this moment the call transfer path from user 108 to LE101 should be retained in dissengaged positions.FSU200 produces the relevant dtmf signal that is stored in dialed digit wherein, and begins to export the inner dtmf signal that produces.The dialing output procedure is fast, the about 100ms of every numeral output, after connect interdigital time of 100ms, need not other time-out.

During FSU200 output dialed number, FSU200 can receive the other dialed digit from subsets unceasingly.Specifically, can carry out dialed digit to the input of FSU200 with from FSU200 output dialed digit with overlap mode.Dialed digit is stored, lines up and promptly exports according to the first in first out scheme with the order of storage.At this moment, the audio transmission path that sends audio signal from user 108 to LE101 is not switched on.Therefore, only hear the dialed digit of other input by FSU200.

If be lower than from the speed (this is similar to the situation of manual dial's device) of FSU200 output dialed digit from the speed of subsets 108 input dial numerals, the formation of then storage numeral may become empty, and the storage numeral that will not export.When comprising the formation of storage numeral of time between last numeral in emptying, the voice-frequency channel between FSU200 connecting subscribers participating telephone set 108 and BS104, BSC103 and the LE101.After connecting this voice-frequency channel, just send to subsets 108 if having from the process tone signal of LE101 output, therefore make this user can hear this process tone signal.And other dialed digit can directly input to LE101 from subsets 108.Do not require the further participation of FSU200 in the dialing output procedure.If callee in distant replys this calling, then can begin without delay to call out.

FSU200 can be set, make and only determining the formation emptying that storage is digital and do not detecting and just connect voice-frequency channel after the other dialed digit from subsets 108.If after the voice-frequency channel on from the other numeral of subsets 108 output, FSU200 memory dialing numeral in its memory not then, and dialed digit will be directly, and (with the in-band signalling form) exports to LE101 from subsets 108.

In first kind of pattern, this user has two benefits: can hear the dialing tone signal after detecting the subsets off-hook immediately, and the purpose in order to allow receipt of call process tone signal and to converse with the callee, connect the voice-frequency channel between this user and the LE as soon as possible.

(second pattern: after subsets enter off hook state, do not dial phone number)

Fig. 5 represents that when subsets enter off hook state from idle condition just look like the calling that will look for novelty message and the incident flow process second operator scheme in the WLL system when starting.Opposite with first pattern, second pattern representative situation that this user does not dial phone number when user's telephone set is in off hook state.This pattern for example also can be applicable to subsets are by mistake become off hook state by domestic cat or child situation.

FSU200 works in the mode substantially the same with first pattern, but uses control device (abbreviating " control device does not dial " below as) when not dialling.Owing to do not dial phone number, therefore stopped the dialing tone signal, and distributed wave point traffic channel demand working voice-frequency channel afterwards in this pattern.As a result, this user can hear the voice reminder and/or the call progress tones of information tone, record from receiver network, such as howler tone, busy tone or high speed busy tone, thereby reminds the user to hang up mobile phone.In fact, if connect this path frequently when LE101 still exports the dialing tone signal, then after the on voice-frequency channel, this user will hear the dialing tone signal from LE101.

And if these subsets 108 are exported dialed digits after the on voice-frequency channel, then dtmf signal is directly exported to LE101 and is ignored by FSU200.

(three-mode: subsets enter off hook state, and this user does not dial phone number after on is by the voice-frequency channel of timer T1 control)

Fig. 6 represents the sequence flow according to the three-mode of WLL system.The difference of the three-mode and second pattern only is the mode of the control device work of not dialling of control section 202.In this pattern, during timer T1, stop the dialing tone signal after expired and connect voice-frequency channel, this timer T1 is set makes longer than distributing the desirable time durations of wave point traffic channel.Therefore, use the duration of timer T1 setting local dial tone longer.This is being different under the situation of the dialing tone signal (being the network dial tone signal) that is produced by LE101 on sound characteristics at the dialing tone signal (being the local dialing tone signal) that is produced by FSU200 be favourable.

In second pattern, suppose when LE101 still exports the dialing tone signal and to connect voice-frequency channel that then the user hears conversion from local dial tone to the network dial sound when connecting voice-frequency channel.Because each LE101 uses the predetermined overtime characteristic of dialing tone to be provided with, therefore can be with this sample loading mode preset timer T1 of the overtime characteristic of dialing tone that meets LE101, this timer is determined the time durations of FSU200 output dialing tone signal.The value of timer T1 can be used regularly when not dialing phone number according to the user mode of system configuration or system, and modifier (being designated hereinafter simply as " not dialing time modifier ") changes arbitrarily.

In this case, if do not have dialing numbers and FSU200 to detect dtmf signal (during being the preset time of timer T1) during the preset time, then FSU200 stops the local dialing tone signal, and connects voice-frequency channel.Just at that time between, LE101 also stops the network dial tone signal, makes the user can't hear the interference between local dial tone and the network dial sound.If timer T1 is set to 0, then three-mode becomes identical with second pattern.

Must predetermined timer T1, but so that it can when the WLL system is installed, be managed or field programming.The value of timer T1 can be stored in the nonvolatile memory of FSU200, and can utilize various measures to change, and these measures for example have local programming mould (jig), wave point order, and dip switch is set or equivalent method.And, the value of timer T1 even can use based on through the method for the combination of the ten keys input of the subsets 108 of receiving this FSU200 or send the method for setting respectively from antenna or this telephone set from the personal computer that is connect and activate control section 202 and change.

(four-mode: the operation of industrial siding automatic ringback)

Fig. 7 represents the sequence flow according to the four-mode of WLL system operation.The four-mode and second pattern are basic identical, and difference is that FSU200 output ringing tone signal replaces the dialing tone signal.The operation of output ring-back tone can be used as industrial siding automatic ringback operation (abbreviating " PLAR " below as).

The PLAR business is used to support the operation of so-called " hot line " type, and is provided by LE101 or other equivalent transmission terminal.The subsets of receiving PLAR are not used in the equipment of dialing at all.When the PLAR subsets entered off hook state, LE101 automatically connected these subsets to predetermined callee.This user hears ring-back tone immediately and does not carry out dial action, and callee's telephone set receiving calling signal ringing voltage.When callee's telephone set responds this call signal and enters off hook state, automatically set up being connected between this user and the callee.

In four-mode, when detecting the off hook state of these subsets, FSU200 exports ringing tone signal immediately and gives these subsets.When distributing the wave point traffic channel, set up voice-frequency channel.Therefore, this user hears the ringing tone signal from network or enters communications status.Then and the family can hear the ring-back tone situation of automatic network or callee's speech immediately.

(the 5th pattern: after timer T2 is expired, automatically terminate traffic channel and distribute)

Fig. 8 represents the sequence flow according to the 5th pattern of WLL system operation.The 5th pattern is second or the continuity of three-mode.When not dialing phone number during certain hour after the subsets off-hook, FSU200 admits that such state is an error condition, and should on-hook to these subsets 108 of this user report.

In FSU200, control section 202 has the function of wireless finishing control device.If can hear that this user certain afterwards (the timer T2's) time durations of call progress tones (message that comprises clean (net) information sound and howler tone) does not detect the hook state of subsets owing to connect the result of voice-frequency channel, after the predetermined time period of timer T2 was gone over, the FSU200 request was released in wave point traffic channel shared and that almost do not have capacity between the user.Therefore, discharge voice-frequency channel and automatically cancel the distribution of traffic channel, thereby finish wireless connections.

Determine by timer T2 and should preset the break time of traffic channel, make it when the WLL system is installed, manage or programming at the scene.Should set timer T2, so that it equals the time durations during LE101 exports howler tone signal, other equivalence prompting or other message.The value of timer T2 can use wireless concluding time modifier to change arbitrarily according to the user mode of system configuration or traffic channel.

The value of timer T2 can be stored in the non-volatile fast memory of FSU200, and order, dip switch as local programming pattern, wave point is set or other equivalent method is revised.And, the value of timer T2 even can use based on through the combined method of the ten keys input of the subsets 108 of receiving FSU200 or send the method for setting respectively from antenna or telephone set from the personal computer that is connect and activate control section 202 and change.

Even when hearing that during the regular hour this user of howler tone does not make telephone set enter off hook state yet, can avoid unnecessary radio communication according to the sequence of the 5th pattern.

(the 6th pattern: the flicker and again reply the order)

Fig. 9 represents the sequence flow according to the 6th pattern of WLL system operation.In the 6th pattern, control section 202 plays the function of replying control device again.When subsets 108 enter a hook state time durations T shorter than the predetermined time period of timer T3, and when setting up stable calls or communications status after, turning back to off hook state, reply control device again and continue this stable calls of maintenance.

In this case, subsets only continue to remain on off hook state in a time durations that is shorter than as the time durations of the timer T3 of threshold value.Therefore, FSU200 only reports the hook state (being called " flash signal " below) of subsets to LE101 through BS104 and BSC103.The wave point traffic channel does not discharge and allows and keeps.FSU200 makes the voice-grade channel (being the transmission level of voice-grade channel) between FSU200 and the user 108 close sound (mute) (or weakening), therefore prevent the user hear unhappy crackling or the situation of Rack.Because subsets enter off hook state again, FSU200 recovers voice-grade channel and does not cause any delay, output dialing tone signal or receive dialed digit, thus will call out as original call simply continue treat and with voice-frequency channel as continuous connection processing.

The correct way of the hook state of LE101 interpreting user telephone set depends on duration of structure, hook state of LE101 and incoming call that this stable calls is originally FSU200 or from the outgoing call of FSU200.

Narration now is about " flicker " and " replying again " operation.

Flicker---can constitute many LE101, short hook state (typically less than 1 second) is thought to activate request (flicker request) such as maintenance, meeting or transfer performance.In Fig. 9, if be shorter than the time durations of wink timing device T4 during the on-hook, then the flicker request passes to LE101.If LE101 does not support flashing function, then timer T4 can be set at 0.

Replying again---many LE101 support response characteristics again, and can constitute in this manner: even the callee temporarily makes his telephone set be in hook state during stable calls, the callee still can reply this calling (unless the callee will abandon this calling) again by once more his telephone set being in off hook state.Have only callee rather than calling party to have the ability of replying again.FSU200 shown in Figure 9 can support response characteristics again.Timer T3 must set two values: promptly a value is used for incoming call, and another value is used for outgoing call.Then, FSU200 must store the mode that current stable calls has been set up.

For incoming call, must set timer T3, so that during equaling or be shorter than response time again that LE101 allows (for example one minute or still less).And the time durations of timer T3 must be longer than the time durations of wink timing device T4.Do not support again that in outgoing call or LE101 under the situation of response characteristics, the time durations of timer T3 should be set at the time durations of being longer than wink timing device T4 slightly.When timer T4 expires when entered hook state at subsets 108 after, to LE101 report hook state.At this moment, the wave point traffic channel is still distributed to this calling.If constitute LE101 to support response characteristics and callee still in running order, then the on-hook report does not make this calling invalid immediately when order is being carried out again.Then, if this user is in off hook state with his telephone set in during the limiting time of timer T3, then off hook state reports to LE101, thereby restarts this calling.

If the callee abandons this calling during hook state, then LE101 makes this connection invalid.In this case, when subsets 108 turned back to hook state and hook state and report to LE101, LE101 exported the dialing tone signal immediately, thereby sets up the voice-frequency channel between FSU200 and the subsets 108 without delay.The user can determine dialing (in the pattern of connecting voice-frequency channel) or on-hook.

In this sequence, LE101 carries out flashing function by the short hook state of telephone set being thought " flicker "; Can think that original call is maintenance, so that reply this calling again; Perhaps exportable second diali tone signal.

Timer T3 and T4 must preset, so that they can manage when the WLL system is installed or programming at the scene.The value of timer T3 and T4 can be stored in the nonvolatile memory of FSU200, and can utilize variety of way to change, and for example local program mould, the order that is used for wave point, dip switch are set or other equivalent method.

In the 6th pattern,,, then can carry out flicker or response operation again if having hook state at short time durations as in the situation of common telephone line.

(the 7th pattern: disconnect and originating call again)

Figure 10 represents the sequence flow according to the 7th pattern of WLL system operation.The 7th pattern relates to subsets remain on hook state at the time durations of being longer than timer T3 sequence.

After subsets 108 have entered hook state, report this hook state to LE101 at the time FSU200 of timer T4 expiration.When timer T3 expires, the distribution of FSU200 cancellation wave point traffic channel, thereby discharge voice-frequency channel and turn back to idle condition.When the user made his telephone set be in hook state again, FSU200 as new calling processings of starting, and continued this action execution and is similar to the processing described in first pattern.

Be provided with on the control section 202 and reply the control invalidation means again.Even be shorter than at the time durations that telephone set carries out hook state under the situation of time durations of timer T3, still can the invalid response operation of mentioning in the 6th pattern again, and can carry out and be similar to above-mentioned calling and start again.

(the 8th pattern: change the timing of output dialed digit)

Figure 11 represents the sequence flow according to the 8th pattern of WLL system operation.The 8th pattern at be in first pattern, to give sequence under the situation that the timing of LE101 changes from FSU200 output dialed digit (being dtmf signal).In others, the WLL system with first pattern shown in Fig. 4 in the same mode work.

In FSU200, control section 202 has the function of DTMF output timing control apparatus.If when calling is started, after the distribution that finishes the wave point traffic channel, set up wireless connections, then the predetermined time period at timer T5 begins to export dtmf signal to LE101 in the past.Under the situation of output dtmf signal, the BS104 of network, BSC103 and LE101 needn't be ready to immediately or receive in the timing of dialed digit at them, even receive dialed digit from user FSU200 after wireless connections are set up.Therefore, in the 8th pattern, after wireless connections are set up, begin Active Timer T5, and after timer T5 expiration, export dtmf signal.Therefore, this network can be determined to export dialed digit from this user reliably.

Timer T5 must be predisposed to and manage in the time of can installing in the WLL system or programming at the scene.The value of timer T5 can be stored in the nonvolatile memory of FSU200 and can change by variety of way, local programming mould for example, and the order, the dip switch that are used for wave point are set or other equivalent method.

As mentioned above, in front in the pattern, starting under the situation of the relevant various operations of operation (such as off-hook operation, dial-up operation and on-hook operation) by the subsets execution with calling, can reduce dial-tone delay and be connected time delay, thereby can provide and the identical telephone service of telephone service that on common telephone line, provides.Therefore, this user can not perceive professional any difference, and may operate telephone set in the mode identical with ordinary telephone set.

(beneficial effect of the present invention)

Narrate as top, the present invention has the fixed-line subscriber that is provided for wireless local loop system The advantage of unit. In fixed subscriber unit, the local dialing tone signal is exported to subsets immediately, And the wave point traffic channel is set up in request. Dialed digit from subsets is stored and is arranged Team, and export to local switch. The digital queue of storage after the output dialed digit finishes When empty, the voice-frequency channel between connecting subscribers participating telephone set and the local switch. When the telephone set that connects begins Send out when calling out, use the local dialing tone signal to reduce dial-tone delay, and eliminated and the connection transmission The problem of path coherence, thereby can reduce the connection time delay. And can provide to be equivalent to common has The telephone service of the telephone service that provides on the line telephone wire.

In the predetermined time period after between subsets and wireless base station, setting up radio communication Be provided with in the situation about dialing phone number, by eliminating dialing tone signal and connecting subscribers participating telephone set and this The voice-frequency channel of ground between the switch, the user can hear the telephone network signal sound, for example busy tone or howl Sound as in the situation of ordinary telephone line, thereby is reminded this user.

When setting up between subsets and the wireless base station in the predetermined time period after the radio communication In the absence about dialing phone number, by eliminate the dialing tone signal, by connect voice-frequency channel and By after waiting for predetermined other time durations, making the wave point traffic channel invalid, as The situation of common telephone line is such, can avoid unnecessary radio communication, if telephone set is in advance Fixed time durations does not enter on-hook will produce this situation.

When in telephone set during the stable calls is during the short time, being transformed into hook state from off hook state Situation under, think that this conversion is the continuation of this calling, and keep logical the building of wave point traffic letter Vertical, thereby avoid exporting the numeral of dialing tone signal or input. As a result, as at common telephone line Situation such, it is short such as maintenance, meeting or the characteristic utilization of passing on to carry out flicker operation-wherein Hook switch action activate, carry out when perhaps this telephone set enters off hook state during the short time and reply again Operation.

Claims (16)

1. a calling that is used for the fixed subscriber unit of wireless local loop system control method that starts comprises the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

The radio base station that is connected with telephone network for wireless connections and the purpose of local switch, the wave point traffic channel is set up in request,

The dialed digit that receives and line up and import from the user,

Be stored in the digital formation that the dialed digit in this formation comes emptying to store to local switch according to the first in first out scheme and after setting up traffic channel by output,

Prevent the transmission between this user and the local switch,

Receive new dialed digit continuously in this formation, simultaneously by output come the emptying storage digital formation and

Digital formation in storage becomes the voice-frequency channel that is used for transmission destination between empty demand working subsets afterwards and the local switch.

2. a calling that is used for the fixed subscriber unit of wireless local loop system control method that starts comprises the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

For the purpose of the radio base station and the local switch of telephone network is received in wireless connections, request set up the wave point traffic channel and

But, then be used for the voice-frequency channel of transmission destination between demand working subsets and the local switch if do not dial phone number in during the preset time of field programming.

3. a calling that is used for the fixed subscriber unit of wireless local loop system control method that starts comprises the following steps:

Response user's new calling is started and is sent local ringing tone signal immediately,

For the purpose of the radio base station and the local switch of telephone network is received in wireless connections, request set up the wave point traffic channel and

Eliminate ringing tone signal, and be used for the voice-frequency channel of transmission destination between connecting subscribers participating telephone set and the local switch.

4. a calling that is used for the fixed subscriber unit of wireless local loop system control method that starts comprises the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

Receive the purpose of the radio base station and the local switch of telephone network for wireless connections, the wave point traffic channel is set up in request,

But if in the predetermined time period of field programming, do not dial phone number, then eliminate the voice-frequency channel that is used for transmission destination between dialing signal and connecting subscribers participating telephone set and the local switch and

But within the other predetermined time period of field programming, make subscriber unit enter stand-by state, thereby make this traffic channel invalid.

5. a calling that is used for the fixed subscriber unit of wireless local loop system control method that starts comprises the following steps:

Response user's new calling is started and is sent the local dialing tone signal immediately,

The of short duration conversion from the off hook state to the hook state during stable calls think this calling continuation and

Receive the purpose of the wireless base station and the local switch of telephone network for wireless connections, continue to set up the wave point traffic channel, therefore prevent the input of dialing tone signal or dialed digit,

Wherein, but the duration of the hook state of handling as the continuation of stable calls corresponding to the predetermined time period of field programming and depend on that this stable calls is incoming call or outgoing call.

6. according to the calling of the described fixed subscriber unit of any claim in the claim 1 to 5 control method that starts, wherein, this fixed subscriber unit is relevant with the system beyond the wireless local loop system, and this wireless local loop system can cause delay when setting up traffic channel.

7. fixed subscriber unit that is used for wireless local loop system, it is set up the communication between subsets and the local switch and provides telephone service by wireless base station and local switch that telephone network is received in wireless connections, and this unit comprises:

The off-hook detection device is used to detect the off hook state of the subsets that will connect;

The dialing tone output device is given these subsets according to the testing result output dialing tone signal that is undertaken by the off-hook detection device;

The DTMF checkout gear is used to detect output and the dtmf signal that comprise dialed digit from these subsets;

The dialing information storage device, memory dialing information on the basis of the dtmf signal that detects;

The dtmf signal generation device produces dtmf signal on the basis of dialing information storage device content; With

The calling control device that starts, it just activates and makes the dtmf signal generation device to produce dtmf signal setting up immediately after the radio communication between this wireless base station and the fixed subscriber unit, and the output dtmf signal is given this wireless base station.

8. fixed-line subscriber telephone unit according to claim 7, during the dialing information emptying of wherein storing in the dialing information storage device, this calling control device that starts is connected voice-frequency channel between these subsets and the local switch.

9. fixed subscriber unit according to claim 7, also comprise the control device that do not dial, in the time of wherein when exported the predetermined time period of dialing tone signal after giving these subsets at the dialing tone output device in, can not detecting from dtmf signal that subsets are exported and when between subsets and wireless base station, setting up radio communication, the control device that do not dial is connected the voice-frequency channel between local switch and the subsets, thereby makes this user can hear the telephone network signal tone.

10. fixed subscriber unit according to claim 9 also comprises not dialing time modifier, and this device changes the dtmf signal detection time that requires behind output dialing tone signal, dial phone number so that determine whether.

11. fixed subscriber unit according to claim 9, also comprise wireless finishing control device, if wherein the requirement after output dialing tone signal detects time from the dtmf signal of these subsets when finishing after the connection voice-frequency channel, do not detect the off hook state of these subsets, this wireless finishing control device stops radio communication after then passing by during preset time, thereby discharges this voice-frequency channel.

12. fixed subscriber unit according to claim 11 also comprises wireless concluding time modifier, the radio communication of concluding time modifier change after connecting voice-frequency channel that this is wireless detects the time of this subsets hook state when stopping.

13. fixed subscriber unit according to claim 7, also comprise and reply control device again, wherein, respond the calling of this subsets reception from the wireless base station, after having set up radio communication between fixed subscriber unit and the wireless base station and between local switch and this subsets, having set up voice-frequency channel, these subsets enter off hook state and during preset time in turn back to hook state; In this case, this fixed subscriber unit itself is not exported the dialing tone signal and is given these subsets, and this is replied control device again and continues to set up radio communication between this wireless base station and this fixed subscriber unit, and set up voice-frequency channel between this local switch and this subsets, thereby make this user can hear the telephone network signal tone.

14. according to the fixed subscriber unit of claim 13, comprise also and reply the control invalidation means again that it prevents to activate replys control device again.

15. fixed subscriber unit according to claim 7, also comprise DTMF output timing control apparatus, when this calling is started control device when activating the dtmf signal generation device and giving this wireless base station to produce dtmf signal and to export this dtmf signal, consider the state of the telephone network of input dtmf signal, this DTMF output timing control apparatus control output regularly makes that the predetermined time period set up radio communication between these subsets and this wireless base station after is exported dtmf signal in the past.

16. according to the described fixed subscriber unit of any claim in the claim 7 to 15, wherein, this wireless local loop system uses the PHS air interface that meets by the air interface standard RS STD-28 of ARIB (radio industry association) definition.

Images