CN1107401C - User radio access system and transmission end dialing number display method - Google Patents

Abstract

The originating telephone number display service of the user accessing the telephone terminal in the system. After detecting the first ringing signal from the local switching system, the wireless subscriber controller connects the path from the local switching system to the in-band signal storage unit and executes the call setup procedure of the wireless telephone device. Receive the originating number from the local switching system during the silent time when the ringing signal first rings and store it in the storage unit. Once the radiotelephone unit starts ringing operation, a ringing signal is returned to the radio subscriber controller indicating that the terminal's telephone bell has started ringing. The wireless subscriber controller transmits the originating number stored in the memory unit to the telephone terminal.

Description

User wireless access system and method for displaying originating telephone number

technical field

The invention relates to a wireless access system for telephone users connecting user telephone terminals to a local exchange system through a radio communication system, in particular to a wireless access system for users capable of displaying originating telephone numbers and a method for displaying originating telephone numbers.

Background technique

The telephone user wireless access system is a telephone system that connects the telephone user's telephone terminal to the local exchange system by using a radio communication system. The system has the same user line interface as the telephone interface of ordinary telephone users, that is, two-line analog line interface.

The subscriber wireless access system includes a wireless subscriber controller connected to a local switching system through a two-wire analog line interface, a plurality of radio base stations connected to the radio controller, and multiple radio base stations within the radio communication area of one of the radio base stations a radiotelephone device, and a telephone terminal connected to the radiotelephone device.

The subscriber wireless access system provides a communication function between the local switching system and the telephone terminal via a radio system as if they were connected by physical lines (two-wire cables). The operation of the system is as follows.

In the subscriber wireless access system, when a call is made (off-hook) from a radiotelephone unit in the subscriber radio access system, a radiotelephone unit connected to the originating telephone terminal requests a radio base station to designate a Communication radio wave channel. At this time, the wireless telephone unit provides an identification number of the originating telephone terminal.

The request is received by the wireless base station and forwarded to the wireless user controller.

The wireless subscriber controller distinguishes a radio signal requesting as a call source from the telephone terminal indicated by the identification number, selects an available radio channel, and connects the channel to a subscriber line in the local system corresponding to the requesting call source. The wireless subscriber controller assigns the selected radio channel to the radiotelephone unit via the radio base station.

The local switching system performs call source control and returns dial tone to the subscriber line. At this point the radio channel has been established between the radio base station and the radiotelephone unit, and dial tone is provided from the local switching system to the originating telephone terminal through the radio subscriber controller, radio base station, radio channel and radiotelephone unit.

The originating telephone terminal then sends the telephone number requesting to set up the call to the local switching system.

On the other hand, when a call is received to a telephone terminal in the telephone subscriber wireless access system, a ringing signal is input to a subscriber line of the local switching system corresponding to the receiving telephone terminal.

If the receiving telephone terminal is an ordinary telephone terminal connected to the subscriber line of the local switching system through a physical line, the ringing signal makes the ringing of the receiving telephone terminal ring. The ring signal is typically a low frequency AC signal and has a tone, eg, one second on (ring time) and two seconds off (silent time).

The wireless subscriber controller detects a ringing signal transmitted to the subscriber line through a trunk line within the ringing time of the first ringing signal, and performs a link establishment process for terminating to a corresponding receiving telephone terminal . The process includes the following operations:

(1) Identify the location of the subscriber line through the provided ringing signal;

(2) Determine the telephone terminal to which the call is to be delivered (this corresponds to the location of the subscriber line);

(3) Connecting the communication path between the trunk line corresponding to the subscriber line and the radio base station serving the radio communication area where the receiving telephone terminal is located.

(4) Designate the channel used by the wireless base station and use it to send a call setup signal to the receiving telephone terminal.

Based on these instructions, the radio base station prepares a designated channel and transmits a call setup signal with identification information of the receiving telephone terminal transmitted from the telephone subscriber radio controller.

The wireless telephone device having the same identification information as that of the transmitted call setup signal confirms the call setup signal and sends back a call setup confirmation signal to the wireless base station. Then, the wireless telephone device rings the telephone bell of the receiving telephone terminal through internal control.

Recently, experiments have been carried out in certain regions about displaying the telephone number of the originating telephone user on the telephone terminal of the receiving telephone user. These experiments were performed by transmitting an in-band signal of the subscriber's telephone number of the originating telephone during the silent period following the ring time of the first ring of the ring signal.

Therefore, if the telephone terminal is an ordinary telephone terminal having a display capability, it is possible for the user to know who is calling before answering the call. Of course, it is preferable that the telephone terminal in the telephone subscriber wireless telephone access system also has the same function of displaying the telephone number of the originating telephone subscriber. However, displaying the telephone number on the telephone terminal of the telephone user's wireless access system has not been implemented. This is because the dead time is too short to simultaneously require the telephone user to wirelessly access the system to receive the originating telephone number, perform the link establishment process, and transmit the originating telephone number to the receiving telephone terminal. Because it takes a relatively long time to perform the link building process. Therefore, the step of sending the originating telephone number from the local switching system is omitted when performing the link establishment process.

Existing methods for displaying the caller's phone number on a mobile phone of a cellular mobile communication system have been disclosed in "Japanese Patent Laid-Open Gazette" No. 58-191541 and "Japanese Patent Laid-Open Gazette" flat 3-7459 public. However, in the above two methods, if the mobile phone terminal does not answer the call, the caller's phone number is displayed after the mobile phone terminal sends a request. These methods cannot display the same telephone number on the telephone terminal of the telephone user's wireless access system as the telephone number displayed on the ordinary telephone user's telephone.

Contents of the invention

In view of the above problems, the present invention can realize the originating telephone number display service on the telephone terminal in the telephone user wireless access system in the same manner as the telephone terminal directly connected to the local switching system by a physical line.

According to the present invention, a wireless access system for telephone subscribers connected to a local switching system through a two-wire analog telephone interface and providing radio communications for a plurality of wireless telephone devices, comprising:

A wireless subscriber controller for connecting to the local switching system via a plurality of pairs of cables wherein each pair corresponds to an identification number registered within the telephone subscriber wireless access system, the wireless subscriber controller comprising:

a plurality of interface lines, wherein each interface line is connected to a cable pair for providing a physical and electrical interface with the local switching system;

a storage unit for in-band signals for receiving and storing in-band signals from the local switching system by being connected to an interface line that receives calls from the local switching system; and

A control unit for detecting a calling terminal within the ringing time of the first ringing signal of the ringing signal transmitting the interface line, establishing a connection between the interface circuit and the in-band signal storage unit, for the the incoming call establishes a channel to a radiotelephone device, transmitting the contents of said in-band signal stored in said in-band signal storage unit to said radiotelephone device;

A wireless telephone set includes:

a control section for providing a ready indication signal to a control unit of the wireless subscriber controller when the in-band signal is ready to receive;

A display panel for displaying the content of the in-band signal from the wireless subscriber controller.

The radiotelephone apparatus of the present invention includes a control section for supplying the control unit with a trigger signal for requesting transmission of the in-band signal, and the trigger signal is supplied when the radiotelephone apparatus is ready to receive the in-band signal. In other words, the control portion of the radiotelephone unit sends a ring signal back to the control unit of the radio subscriber controller indicating that the radiotelephone unit's bell has started ringing and is ready to receive the in-band signal. The content of the in-band signal may be the telephone number of the originating telephone user of the ringing.

According to the present invention, an originating telephone number display method for the above-mentioned telephone subscriber wireless access system, the wireless subscriber controller in the telephone subscriber wireless access system is connected to the local switching system through a two-wire analog telephone interface and through the corresponding service in The wireless base station in the radio communication area provides radio communication for a plurality of wireless telephone devices, including the following steps:

(1) Detect the calling terminal in the radio subscriber controller within the ringing time of the first ringing signal from the local switching system;

(2) Connect to an in-band signal storage unit in the wireless subscriber controller, for receiving and storing the in-band signal transmitted from the local switching system during the silent time when the ringing signal first rings;

(3) setting up a channel leading to the telephone device to receive the call through the wireless subscriber controller and the wireless base station;

(4) causing the telephone bell of the wireless telephone device to ring;

(5) providing a ready indication signal from the radiotelephone device to the radio subscriber controller;

(6) transmitting the in-band signal stored in the in-band signal storage unit to the radiotelephone device;

(7) Displaying the content of the in-band signal transmitted from the wireless subscriber controller at the wireless telephone device.

In addition, preferably after the ringing is started, a ringing signal is sent from the control section to said wireless subscriber controller to indicate the start of the ringing.

Description of drawings

Fig. 1 is the block diagram of telephone user wireless access system of the present invention;

FIG. 2 is a communication flow diagram explaining the operation of the wireless access system for telephone subscribers in FIG. 1. FIG.

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in FIG. 1 . The telephony subscriber wireless access system is directly connected to the local switching system through the conventional telephony subscriber interface just like a normal telephony subscriber's telephone terminal. That is to say, a plurality of subscriber lines (not shown in the figure) are provided as telephone subscriber interfaces within the local switching system 1 . Include a wireless user controller 2, wireless base station 3-1 to 3-n, be positioned at the wireless telephone device 4-1 to 4-n in the telephone user's house and telephone terminal 5-1 to 5 in this telephone user's wireless access system -n.

The wireless subscriber controller 2 includes a plurality of trunk lines 9-1 to 9-n corresponding to a plurality of subscriber lines (not shown) in the local switching system 1, a time division switch 10, a control unit 11, a plurality of wireless base station interfaces Units 12-1 to 12-n, an in-band signal storage unit 13. The wireless subscriber controller 2 is responsible for managing the overall operation of the telephone subscriber wireless access system.

The trunk line 9 provides physical and electrical interface functions for the subscriber lines in the local switching system 1, just as ordinary telephone terminals are connected under the control of the control unit 11, that is, the trunk line detects that it is transmitted through the subscriber line during the call termination. The ring signal provides an on-hook signal (circular signal) to the subscriber line when the calling party or when answering a connected call, and provides a communication path.

The time division switch 10 provides a communication path between the repeater 9 and the radio interface unit 12 under the control of the control unit 11 . Since each subscriber line in the local switching system corresponds to each trunk line in the wireless subscriber controller, the control unit 11 can distinguish the response between each trunk line and each telephone terminal. The location of each telephone terminal is managed by a radio communication area provided by the radio base station. Therefore, the communication path between the trunk line 9 and the wireless base station interface unit 12 can be easily determined within the time division exchange 10 by distinguishing the position of the trunk line or distinguishing the identification number of the telephone terminal.

The in-band signal storage unit 13 receives and stores the in-band signal of the originating telephone number sent from the local switching system during the silent time when the ringing signal first rings.

The radio base station interface unit 12 provides an interface function for the radio base station, and the radio base station 3 provides the function of transmitting and receiving radio signals.

The wireless telephone device 4 is used as the interface between the wireless base station 3 and the telephone terminal 4, and includes a radio transceiver 6 for radio communication, a telephone user interface 7 connected to the telephone terminal 5, and a wireless user controller 2 The control unit 11 is combined with the control section 8 for performing call connection control.

In this structure, the control unit 11 of the wireless subscriber controller 2 connects the trunk line receiving the call with the in-band signal storage unit 13 during the first silent time of the ringing signal, and the originating number transmitted from the local switching system 1 Information is stored in the in-band signal storage unit 13 . The control section 8 of the wireless telephone device 4 reports to the control unit 11 of the wireless subscriber controller 2 an appropriate transmission timing for transmitting telephone number information to the telephone terminal 5 as part of signal processing for a call placed to the telephone terminal 5 . Here, after the control unit 11 receives the timing report from the control unit 8, the originating telephone number stored in the in-band signal storage unit 13 is passed through the time division switch 10, a wireless base station interface 12, a wireless base station 3, and a radio transceiver. Machine 6 and a telephone user interface 7 are routed to the telephone terminal 5 via the channel given.

The operation process of the present invention will be described below with reference to FIG. 1 and FIG. 2 .

FIG. 2 is a signal flow diagram of the wireless access system for telephone subscribers in FIG. 1, which shows the main signal sequence for transmitting the originating telephone number information to the telephone terminal 5 in the call receiving end signal sequence when performing the originating telephone number display.

When the first ringing signal 20 (the ringing time of the ringing signal first ringing) provided from the local switching system 1 through the trunk line 9 in a call receiving end signal sequence is received by the wireless subscriber controller within its ringing time When the control unit 11 of 2 detects it, the following operations are performed by the control unit 11 in the silent time after the ringing time of the first sound of the ringing signal:

(1) judge the position of the trunk line that transmits the ringing signal;

(2) connect the signal path between the trunk line 9 and the in-band storage unit 13 in the time division switch 10;

(3) Identify the telephone terminal to which the call is to be delivered (this corresponds to the trunk line location);

(4) Select an available channel corresponding to the wireless base station interface unit 12 for the wireless base station in the radio communication area where the telephone terminal 5 serving the call receiving end;

(5) Designate a channel for the wireless base station 3, and establish a channel for the telephone terminal 5 receiving a call.

In the quiet time when the ringing signal received and stored by the in-band signal storage unit 13 first rings, the originating telephone number information 21 is transmitted from the local switching system 1 to the wireless subscriber controller 2, and then the second ringing signal 22 is transmitted. (second ringing signal). Since the ringing signal from the local switching system is a low-frequency AC signal, it is impossible to transmit it through the radio control channel, once the aforementioned operation by detecting the first ringing signal is completed, except for the second The sound of other ringing signals outside the ring is ignored by the wireless subscriber controller 2.

The wireless base station prepares the designated wireless channel according to the call setup instruction 30 of the wireless user controller 2 and transmits a call setup signal 40 through a control channel, which represents a call setup command, a radio channel number to be used, and the number of radio channels to be received. Identification information of the telephone terminal 5 to be called.

The wireless telephone device 4 having the same identification information as the identification information transmitted together with the call setup signal 40 acknowledges the call setup signal 40 and sends back a call setup confirmation signal 41 to the wireless base station 3, and also sends the wireless subscriber controller 2 as a confirmation call Create signal 31. Next, the wireless telephone device 4 rings the telephone bell of the telephone terminal 5 through the internal control of the control section 8 and the telephone user interface 7 (first ringing signal 50).

When the wireless telephone device 4 rings the telephone bell of the telephone terminal 5, the wireless telephone device 4 sends back the ringing signal 42 to the wireless base station 3 and shows that the ringing operation has started at the receiving side, and sends the ringing signal to the wireless subscriber controller. Signal 32.

When the control unit 11 of the wireless subscriber controller 2 received the ring signal 32, the control unit 11 regarded the ring signal 32 as the first ringing that had started at the telephone terminal, and then took out and stored in the in-band signal storage unit 13, and transmit the originating number information to the telephone terminal 5 through the wireless base station 3 and the wireless telephone device 4. Thus, the ring signal 42 transmitted back from the radiotelephone unit 4 is used as a trigger to transmit the originating number information.

The telephone terminal 5 receives the originating number information, and then displays it on the display panel of the telephone terminal.

The call connection carried out thereafter (as transmitting the second ringing signal 51 to the telephone terminal 5) is the same as the method of the conventional art.

As described above, the present invention provides a service of displaying an originating number at a telephone terminal connected to a local switching system through the same telephone user interface as an ordinary telephone subscriber's telephone terminal as part of a telephone subscriber's wireless access system. For the ordinary telephone subscriber telephone terminal directly connected to the local exchange system through the physical line, the same originating telephone number display service in the telephone subscriber wireless access system of the present invention can also be used.

The present invention has been described above with several preferred embodiments, but it should be recognized by those skilled in the art that modifications to the present invention are within the spirit and scope of the claims.

Claims (9)

1, a kind ofly be connected to local switching system, and, it is characterized in that comprising for a plurality of radio Phone units provide telephone subscriber's radio access system of radio communication by the two-wire simulative telephone interface:

Wireless user's controller is used for corresponding to the many of an identification number of registering cable being connected to described local switching system by every pair of cable wherein in described telephone subscriber's radio access system, and this wireless user's controller comprises:

A plurality of interface circuits, wherein each interface circuit be connected to described cable to be used to provide and described local switching system between physics and electric interfaces;

The memory cell of inband signaling, it is used for receiving and store inband signaling from described local switching system by being connected to reception from the described interface circuit of the calling of described local switching system; And

A control unit, be used in ring time of first sound of the bell signal of the described interface circuit of transmission, detecting a calling terminal, set up being connected between described interface circuit and described inband signaling memory cell, for this call setup of sending to leads to the channel of a radio Phone unit, the content delivery of the described inband signaling that is stored in described inband signaling memory cell to described radio Phone unit;

Comprise in the described radio Phone unit:

A control section that is used for when being ready to the accepting state of inband signaling, providing described preparation index signal to the described control unit of described wireless user's controller;

A display floater that is used to show the content of the described inband signaling that transmits from described wireless user's controller.

2, telephone subscriber's radio access system as claimed in claim 1 is characterized in that also comprising:

One in described radio Phone unit, be used to the transmission inband signaling that the control section of triggering signal is provided to described control unit.

3, telephone subscriber's radio access system as claimed in claim 2 is characterized in that described control section offers described control unit to triggering signal when being ready to receive the state of inband signaling.

4, telephone subscriber's radio access system as claimed in claim 2, its feature is being that described control section sends it back bell signal described control unit and shows that the telephone ringer in described radio Phone unit has begun the sound that shakes.

5, telephone subscriber's radio access system as claimed in claim 4, its feature is being the telephone number of the content of described inband signaling for the originating subscriber of this calling.

6, telephone subscriber's radio access system as claimed in claim 1, the channel that it is characterized in that leading to radio Phone unit is to set up by being used for the described wireless base station that receiving terminal calls out, and be when the ready expression signal that receives from described radio Phone unit, carry out of the operation of the content delivery of the described inband signaling that is stored in described inband signaling memory cell to described radio Phone unit.

7, telephone subscriber's radio access system as claimed in claim 6, its feature shows that being that described control section sends it back described wireless user's controller to a bell signal telephone ringer of described radio Phone unit begins the sound that shakes.

8, a kind ofly be used for the transmission end dialing number display method that a plurality of radio Phone units in the radio communication zone that is connected to local switching system by the two-wire simulative telephone interface and serves for this base station by corresponding wireless base station provide telephone subscriber's radio access system of radio communication, it is characterized in that comprising the steps:

In the ring time of bell signal first sound that transmits from local switching system, detect a calling terminal;

In this wireless user's controller, be connected to an inband signaling memory cell, be used in the dead time of bell signal first sound that signal memory cell is used to receive and store the inband signaling that transmits from described local switching system in the connecting band;

Set up the channel that leads to the described radio Phone unit that will receive this calling by wireless user's controller and wireless base station;

Make the telephone ringer of this radio Phone unit begin the sound that shakes;

Provide a ready expression signal from described radio Phone unit to described wireless user's controller;

The inband signaling that is stored in described inband signaling memory cell is transferred to described radio Phone unit; And

Described radio Phone unit shows the content of the described inband signaling that transmits from described wireless user's controller.

9, method as claimed in claim 8 is characterized in that also comprising step:

After the beginning ring, send a bell signal with the expression ring to described wireless user's controller from described control section.

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