JPH0759144A - Radio telephone equipment - Google Patents

Abstract

PURPOSE:To select a speech path automatically without interruption of talking during extension talking in the radio telephone equipment comprising a slave set, a connector and a controller. CONSTITUTION:A slave set 11 is provided with a connector interface means 14 used for communication with a connector, a slave set interface means 13 for communication between slave sets, a speech channel communication means 16 for communication with a speech channel, a control channel communication means 15 for communication with a control channel, an error rate detection means 20 detecting a communication error rate of reception data, a timer management means 21 managing a reply time from a talking destination, an identification code storage means 22 storing an identification code and a talking destination extension number storage means 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when making an extension call,
The automatic call path can be switched according to the distance between the handset units. The child machine makes / receives a call and makes a call with an outside line through the parent machine. The present invention relates to a wireless telephone device for relaying a call by relaying a cordless handset in the zone when the cordless handset moves outside the zone.

[0002]

2. Description of the Related Art In recent years, the development of wireless telephone devices has been remarkable, and it is possible to use a plurality of wireless telephone slave units for a wireless telephone master unit or make a call while moving like a mobile telephone. Services are also provided. Also, in offices such as general offices and factories, from room to room,
A wireless telephone device system that can be carried from building to building is being considered as connected to a private branch exchange.

FIG. 16 is a block diagram showing a configuration example of a conventional wireless telephone device. In FIG. 16, reference numeral 101 is a first slave unit accommodated in the wireless telephone device, 102 is a slave unit control unit configured by a microprocessor or the like for main control of the first slave unit 101, and 103 is voice data and A slave unit communication unit 104 that modulates / demodulates control data and communicates data with a second slave unit 112, which will be described later, 104 modulates / demodulates voice data and control data and communicates with a first connection device 113, which will be described later. A connection device communication means for performing data communication, 105 is an operation means including a push button for inputting a telephone number and buttons and switches having other functions, and 106 is a call when an extension call is made. Error rate detection means for detecting the communication error rate of the received data from the called side child device received by the child device communication means 103 in the side child device, 107,
When an extension call is made, a timer managing means for managing the response time from the called side child device, 108 is an identification code for storing the identification codes of all the handset devices and all the connection devices accommodated in the wireless telephone device. Storage means (here, for simplification of explanation, the identification code given to the child device and the extension number are the same), 109 is the extension number of the callee input from the operation means 105. Called extension number temporary storage means for temporarily storing, 110 is a voice interface means for processing a reception voice means and a transmission voice signal, and 111 is for transmitting and receiving radio waves to and from a second handset 112 and a first connecting device 113 described later. An antenna, 112 is a second handset having the same configuration as the first handset 101, and 113 is an extension line call and an external line call.
In the wireless unit, a first connecting device that interfaces with a child device, 114 is a second connecting device that has the same configuration as the first connecting device 113, and 115 is call control in the wireless telephone device and connection / connection of a communication path / A control device for controlling the opening and the like, 116
Is a main control means constituted by a microprocessor or the like for controlling the control device 115, 117 is a call path switch for connecting / disconnecting the call path during an internal call and an external call,
Reference numeral 118 is a connecting device interface means for performing multiplexing / separation of control data and voice data, and for interfacing with the first connecting device 113 and the second connecting device 114.

Here, in the wireless telephone device, an identification code (hereinafter referred to as ID
In the conventional example, the first cordless handset 101 has “001”, the second cordless handset 112 has “002”,
“003” for the first connection device 113, the second connection device 114
Is given an ID code of "004". The first child device 101 is located in a zone where radio waves can be transmitted to and received from the first connection device 113, and the second child device 112 is located.
Is located in a zone where radio waves can be transmitted and received to and from the second connection device 114.

With respect to the wireless telephone device configured as described above, the description will be made below with reference to FIGS. 16 and 17 regarding the case where an extension telephone call is made from the first handset 101 to the second handset 112. Do it. First, the caller makes an extension call,
Extension key provided on the operation means 105 in the first child device 101
Press (not shown) (S101). At that time, the slave unit control means 102 operates the slave unit communication means 1 by pressing the extension key.
03 is activated and the connection device communication means 104 is deactivated (S102). Next, the caller presses the extension number "002" of the second handset 112 which is the called side (S103). At that time, the pressed extension number information is temporarily stored in the called extension number temporary storage means 109 (S104). Next, a call key (not shown) for transmitting call data including the extension number is pressed (S105). When the calling key is pressed, a calling signal including the extension number information is sent from the handset communication means 103 to the control channel (S106). At this time, at the same time when the calling signal is transmitted, the error rate detecting means 106 for detecting the error rate of the response signal and the timer managing means 107.
Is activated (S107). At this time, if the first slave unit 101 and the second slave unit 112 are located within a range in which the strength of the radio wave can be sufficiently communicated, a normal response signal is returned from the second slave unit 112 (S108). , S109), it is determined that extension calls can be made directly between the handset units, and it is possible to make a call between the handset units that do not use the communication path of the wired section (S110).

However, in the case where the first handset 101 and the second handset 112 are not located within the range of sufficient communication in terms of the strength of the radio wave, and the response signal is not returned within the specified time (S1
(NO of 08), a time-out occurs by the timer management means 107 (S111), and the slave unit control means 102 switches the transmission of the calling signal from the slave unit communication means 103 to the connection device communication means 104 (S112). , It is possible to switch to the extension call by the call route using the call route of the wired part. Further, even if the response signal is returned, the strength of the radio wave is weak, and when the error rate detecting means 106 detects an error rate higher than the specified value due to noise or the like (YES in S109), the slave unit controlling means 10 is also simultaneously operated.
By switching the transmission of the calling signal from the handset communication means 103 to the connection device communication means 104 (S112), it is possible to switch to the extension call by the call path using the call path of the wired part. The connection device communication unit 104 activated by the child device control unit 102 newly sends a call signal including the ID code to the first connection device 113 (S113). The first connecting device 113, which has received the calling signal, confirms the ID code and returns a response signal including the ID code to the first handset 101. After that, the first handset 101 captures an idle call channel (S114), and then the called extension number temporary storage means 109
The dial information of the second handset 112 which is the called side stored in (S115) is transmitted (S115). After that, the main control means 116 in the control device 115 establishes a call path by connecting the call path switch 117, and the call can be made on the call path via the wired part (S116).

FIG. 18 shows TDMA (time division mul).
3 shows an example of a slot configuration in a wireless communication system of a tiple access type. In the TDMA system, as shown in FIG. 18, data of a control channel and a call channel are placed in a time division / multiplexed transmission / reception slot for data transmission / reception and a call. FIG. 18 shows an example of 4-channel multiplexing. Further, FIG. 19 shows a configuration of a conventional wireless telephone base unit (in the case of four-channel multiplexing).
Is the configuration of the conventional wireless telephone handset (in case of 4-channel multiplexing)
Is.

A method of transmitting an extension line and an outside line in the above-described conventional radio telephone device will be described below with reference to FIGS. 19 and 20. In FIG. 19, 130 is a wireless telephone base unit, and 131
Is an antenna having a function of transmitting a radio signal to the air and receiving it from the air, and 132 is a digital signal of the radio signal, and a digital signal of the call channel and the control channel is converted to a radio signal by using the TDMA method. The wireless interface unit 133 having a function of converting into a signal is a TDM.
A transmission buffer that stores the data to be placed in each transmission slot of the A system, and is an input to the wireless interface unit 132.
34 is a reception buffer for storing the output from the wireless interface unit 132, 135 is a CODEC for performing digital / analog conversion and analog / digital conversion, 136 is an outside line interface unit for interfacing with an outside line, 137 is an outside line, and 138 is TDMA. A slot management unit that manages the slots of the system, and a control unit 139 that manages them.

In FIG. 20, reference numeral 140 is a wireless telephone handset, 141 is an antenna having a function of transmitting and receiving radio signals into the air, and 142 is a digital channel and a control channel using the TDMA method. Reference numeral 143 denotes a TDMA which has a function of converting a signal into a wireless signal and vice versa.
A transmission buffer that stores data to be placed in each transmission slot of the system and that is input to the wireless interface unit 142;
Is a reception buffer that stores the output from the wireless interface unit 142, and 145 is a CODEC that performs digital / analog conversion, analog / digital conversion, and tone generation.
6 is a microphone that is a voice input unit for a call, 147 is a speaker that is a voice output unit, 148 is a slot management unit that performs TDMA slot management, 150 is a dial input unit that selects a communication partner, and 151 is An extension call button for communicating with the wireless telephone slave unit 140, an outside call button for communicating with an outside line, and a control unit 149 for managing these.

Referring to FIG. 21, a communication sequence between the wireless telephone handset units in the above-described conventional wireless telephone apparatus will be described. First, the user of the wireless telephone handset-1 on the receiving side presses the extension call button 151 (S120) and waits for an incoming call. When the calling wireless handset-2 presses the extension call button 151 (S121) and the extension number on the dial input unit 150 (S122), the data link establishment request message is sent to the control channel slot ( When the data is written in the slot 1) in FIG. 20, it is sent out into the air through the wireless interface unit 142 and the antenna 141 (S123). The antenna 141 of the wireless telephone handset-1 on the receiving side receives the message of the control channel, the message is written in the receiving buffer 144 via the wireless interface section 142, and the control section 14
Processed at 9. Control unit 1 that received the data link establishment request
49 writes the data link establishment response message in the control channel slot (slot 1 in FIG. 20) of the transmission buffer 143 and transmits it to the wireless telephone handset-2 (S124). These sequences establish a data link between two wireless telephone handsets. Next, the wireless telephone slave unit-2 sends a calling message including information of the destination extension number pressed in S122 and the slot number used for inter-slave communication on the control channel to the wireless telephone slave unit-1. (S125). At this time, information on the wireless telephone handset call is written in the slot usage field of the slot management unit 148 corresponding to the slot number entered in the call message. Upon receiving the calling message, the control unit 149 of the wireless telephone slave unit-1 transmits a synchronization message on the control channel if the destination extension number in the message is its own extension number (S126). At this time, the information of the wireless telephone handset call is written in the slot usage field of the slot management unit 148 corresponding to the slot number in the call message. Upon receiving the synchronization message, the wireless telephone handset-2 sends a ringback tone from the CODEC 145 to the speaker 147 (S128) and transmits the synchronization message on the control channel (S127). Upon receiving the synchronization message, the wireless telephone handset-1 starts ringing (S129) and notifies the user that there is an incoming call. When the user of the wireless telephone slave unit-1 presses the extension call button 151 (S130), the ringing is stopped (S131), and a response message is transmitted to the wireless telephone slave unit-2 on the control channel (S132). Upon receiving the response, the wireless telephone handset-2 stops the ringback tone (S13
3), send a synchronization message on the call channel (S13
Four). The wireless telephone handset-1 which has received the synchronization message on the call channel transmits the synchronization message to the wireless telephone handset-2 on the call channel (S135), and shifts to the in-call state (S136).
Upon receiving the synchronization message on the call channel, the wireless telephone handset-2 shifts to the call (S136).

At this time, the control unit 149 of the wireless telephone slave unit is
When the information of the slot management unit 148 is searched, it is a telephone call between handset units, and the following transmission / reception switching processing is performed. Microphone
The audio signal input from 146 is sent to the transmission buffer 143 through the CODEC 145, and the wireless interface unit 142,
It is transmitted to the other party's wireless telephone handset via the antenna 141. In addition, the wireless signal received from the antenna 141 includes a wireless interface unit 142, a receiving buffer 144, a CODE.
It is sent to the speaker 147 via C145.

Next, referring to FIG. 22, a description will be given of the outside line calling and call sequence of the conventional wireless telephone handset. First, the user of the wireless telephone slave unit presses the outside line call button 152 (S141),
When the outside line number is pressed on the dial input unit 150 (S142),
When the data link establishment request message is written in the control channel slot (slot 1 in FIG. 20), it is sent out into the air via the wireless interface unit 142 and the antenna 141 (S143). When the antenna 131 of the wireless telephone base unit receives the message of the control channel, the wireless interface unit 13
The data is written in the reception buffer 134 via 2 and processed by the control unit 139. The control unit 139 that received the data link establishment request
Writes a data link establishment response message in the slot (slot 1 in FIG. 19) of the control channel of the transmission buffer 133 and transmits it to the wireless telephone handset (S144). By these sequences, a data link between the radio telephone master unit and the slave unit is established. Next, the wireless telephone handset transmits a calling message including the pressed outside line number to the wireless telephone base unit on the control channel (S145). Control unit 139 of wireless telephone base unit
When the call message is received, the call process to the outside line is performed (S146). When the control unit 139 of the wireless telephone base unit detects a response from the outside line (S148), it selects a slot for the outside line call, and the corresponding slot management unit 138 selects the slot number usage method in the column of the usage line of the outside line call. Information is written and a response message including information on the slot for outside line communication is transmitted to the wireless telephone handset (S147). Upon receiving the response message, the wireless telephone handset writes the information of the outside line call in the slot number column of the slot management unit 148 corresponding to the slot number for the outside line call in the response message, and transmits the synchronization message on the call channel. (S149). Upon receiving the synchronization message, the wireless telephone base unit transmits the synchronization message on the call channel (S150), and shifts to the call-in progress (S151). Upon receiving the synchronization message on the call channel, the wireless telephone handset shifts to the call state (S150).

At this time, the control unit 149 of the wireless telephone slave unit is
When the information of the slot management unit 148 is searched, it is an outside call, and the following transmission / reception switching processing is performed. Microphone 14
The voice signal input from 6 is sent to the transmission buffer 143 through the CODEC 145, and is transmitted to the wireless telephone base unit through the wireless interface unit 142 and the antenna 141. In addition, the wireless signal received from the antenna 141 includes a wireless interface unit 142, a reception buffer 144, and a CODEC 145.
Is sent to the speaker 147 via. Further, when the control unit 139 of the wireless telephone base unit searches the information of the slot management unit 138, it is an outside line-slave unit call, and performs the following switching processing. The voice signal input from the outside line 137 is sent to the transmission buffer 133 through the outside line interface unit 136 and the CODEC 135, and the wireless interface unit 132 and the antenna are transmitted.
It is transmitted to the wireless telephone handset via 131. In addition, the wireless signal received from the antenna 131 is transmitted by the wireless interface unit 1.
32, the receiving buffer 134, the CODEC 135, and the external line interface unit 136 to send to the external line 137.

Further, as a communication method between a base station and a mobile station of a radio telephone system, a multi-zone method is adopted in which the base stations are distributed and arranged to increase the number of mobile stations that can be accommodated by repeatedly using the same frequency band. . With this method, the service area is divided into relatively narrow zones, and the frequency is repeatedly used with low-power radio waves, which has the advantage of reducing transmission power and increasing the number of mobile stations accommodated, but moving between zones. A variety of methods have been realized, which requires a technique for keeping track of the position of a mobile station that operates and continuing a call.

FIG. 23 shows a configuration example of a base station and a mobile station of a conventional radiotelephone device. The base station 162 is provided with a base station ID storage unit 167 in which its own identification code is written. When the mobile station 161 transmits, the first control unit 168 transmits the base station ID and voice stored in the base station ID storage unit 166 via the inter-base station wireless interface 169. In the base station 162 which has received the identification code via the mobile station radio interface 170, the second control unit 172
The received base station ID and base station ID storage unit 167
It is possible to make a call through the extension 184 by comparing the identification codes stored in, and detecting that they match.

When the mobile station 161 receives a call, the base station 162
Needs to know whether the mobile station 161 is located within its own wireless zone. The wireless zone is a range in which radio waves from the base station 162 can reach normally and can normally communicate with the mobile station 161. The base station 162 operates as follows. The base station 162 is provided with a location registration management unit 175 having a management table of mobile station IDs indicating that the mobile station 161 is located within its own wireless zone, and the base station 162 receives the location registration management unit when receiving a call. Based on the information of 175, it is confirmed whether the mobile station 161 is located in the wireless zone, and the extension 184 is connected. Specifically, when the second control unit 172 confirms from the information of the location registration management unit 175 that the mobile station 161 exists in the wireless zone, the mobile station written in the mobile station ID storage unit 174. The ID and voice are transmitted via the inter-mobile station wireless interface 170. In the mobile station 161, which has received the identification code via the inter-base station wireless interface 169, the first control unit 1
Mobile station ID received by 68 and mobile station ID storage unit 173
It is possible to talk with the mobile station 161 by comparing it with the identification code stored in, and detecting that both match.

Consider a case where the mobile station 161 having such a configuration moves from a radio zone of the base station 162 (hereinafter referred to as a first radio zone) to another radio zone adjacent to the first radio zone during a call. In this case, the first control unit 168 of the mobile station 161 sends a handoff request to the base station 162 due to deterioration of the radio wave condition received from the inter-base station wireless interface 169. The base station 162 sends a handoff request from the mobile station 161 via an extension 184 that is wire-connected to a control device (not shown).
The control device causes the base stations in the vicinity of the base station 162 to receive the radio wave state with the mobile station 161 and checks the free channel state. If the radio wave condition received from the peripheral base station is equal to or more than the specified value and the peripheral base station has an empty channel, the control device gives the channel number and the identification code to the peripheral base station to the base station 162.
To the mobile station 161, and the mobile station 161 switches to the received channel and continues the call through the peripheral base stations.

[0018]

[Problems to be Solved by the Invention] (1)
In the conventional wireless telephone device described in 16, when making an extension call, the call path is automatically set only when a call is made, and
When the call route is set and the call status is changed, the call route cannot be switched. Therefore, when the user (slave device) moves during the call, the call is interrupted midway or the call route of the wired part is not effectively used. Had. For example, if a call route between direct handset units is set when a call is made, the user moves in a direction away from each other, and if the call exceeds the range where direct handset units can communicate with each other, the call will be interrupted midway, and a new call is made. I have to make the call again,
Starts the connection device when making a call When a call route using the call route of the wired section is set, the users move toward each other and even if they are located within the range where they can talk directly between the cordless handsets. Since the call path is not released, there is a problem that the call path of the wired part is not effectively used. The first aspect of the present invention solves the above-mentioned problems, and in addition to the function of automatically setting a call route at the time of making a call in an extension call, it also has a function of automatically switching the call route according to the distance between handset units even when the user is in a call. An object of the present invention is to provide a wireless telephone device having the same.

(2) Further, in order to solve the above (1), a control channel communication means is provided in the slave unit in order to provide a function of automatically switching the call path according to the distance between the slave units even during a call, When the control data is transmitted periodically and the response signal is monitored, the power consumption of the slave unit increases. The second aspect of the present invention solves the above problem, and only when the slave units during extension communication are located in the zone of the same connection device or in the zones of adjacent connection devices, It is an object of the present invention to provide a radiotelephone device that enables a mobile device to perform an operation for automatically switching a communication path and suppresses power consumption of a slave device.

(3) In the conventional radiotelephone device, the call from the radiotelephone handset outside the zone to the outside line is impossible, and it is necessary to move to the zone of the radiotelephone base unit when the call is necessary. Yes, it was very inconvenient in an emergency. Book Third
The invention solves the above-mentioned problems, and an object of the invention is to provide a wireless telephone device capable of relaying an outside line from a wireless telephone handset outside the zone by relaying the wireless telephone handset in the zone. To do.

(4) Further, in the conventional radiotelephone device, when the mobile station leaves the radio zone of the base station by zone movement during a call, the call quality cannot be secured and the call is disconnected. Had. The fourth invention is to solve the above problem, and an object thereof is to provide a radiotelephone device capable of ensuring the communication quality even when the mobile station is away from the radio zone of the base station.

[0022]

[Means for Solving the Problems] (1) In order to achieve the object described in the item (1) of the problem to be solved by the present invention, voice data and control data are set in a slave unit of a wireless telephone device. And a connection device interface means for performing transmission / reception of data between the connection devices and transmission / reception of data between the connection device and a connection device for performing modulation / demodulation of voice data and control data when transmitting / receiving an extension call or an outside call. And a control channel communication means for communicating control data between slave units or a connection device in the control channel, a call channel communication means for communicating voice data between slave units or a connection device in the communication channel, and operating states and operations. Display means for displaying methods, etc., tone generating means for notifying the caller of the operating state, and when making a call or during a call And an error rate detecting means for detecting a communication error rate of received data received by the control channel communication means, and a partner side device or a connection device for transmission data from the control channel communication means at the time of calling or talking. Managing means for managing the response time from the device, identification code storage means for storing the identification codes of all the cordless handsets and all the connection devices accommodated in the wireless telephone device, and temporarily storing the extension number of the calling party. A telephone call extension number storage means is provided.

(2) In order to achieve the object described in item (2) of the problem to be solved by the present invention, when an extension call is made in a slave unit of a wireless telephone device, voice data and control data are transmitted. A cordless handset interface means for performing modulation / demodulation and transmitting / receiving the data between the cordless handsets, and a connection device interface means for performing modulation / demodulation of voice data and control data to transmit / receive the data to / from a connection device when performing an extension call or an outside call. And a control channel communication means for communicating control data between the handset units or the connection device in the control channel, a call channel communication means for communicating voice data between the handset devices or the connection device in the call channel, and when making a call or At the time of a call, an error rate for detecting the communication error rate of the received data received by the control channel communication means. Detecting means, timer managing means for managing the response time from the partner side handset or the connection device to the transmission data from the control channel communication means at the time of calling or talking, and all accommodated in the wireless telephone device. In addition to the identification code storage means for storing the identification codes of the cordless handset and all the connection devices and the call destination extension number storage means for temporarily storing the extension number of the call partner, in the control device of the radio telephone device, the radio telephone device Is provided with position detecting means for detecting the positions of all the slave units housed in.

(3) In order to achieve the object described in the item (3) of the problem to be solved by the present invention, the digital data of the communication channel of the reception buffer is transmitted to the conventional wireless telephone handset. A call path switch having a function of setting in the credit buffer is added, and a conventional slot management section is provided with an area for storing the other party's call slot number to form a slot-other party management section.

(4) In order to achieve the object described in item (4) of the problem to be solved by the present invention, in addition to the conventional configuration, in the mobile station of the radiotelephone device, the An antenna for transmitting and receiving, a wireless interface between mobile stations, and a storage unit for storing the IDs of mobile stations that are relay sources are provided, and the IDs of the mobile station and the relay mobile station that are in communication at the base station.
The mobile station ID conversion unit for converting

[0026]

(1) In direct extension-to-slave communication in extension calls, the slave performs voice data communication by the call channel communication means via the connection device interface means, and at the same time transmits control data by the control channel communication means. Periodically, the data is sent to the partner side slave unit via the slave unit interface means. In the case of an extension call using the communication path of the wired part, the communication of voice data is performed by the call channel communication means of the child device through the connection device interface means, and at the same time, the control data is periodically sent by the control channel communication means. It is sent to the other handset through the interface means. By monitoring the state of the response signal to the control data by the error rate detection means and the timer management means, the mutual distance between the handset units that changes due to the movement of the user is determined, and the distance between the handset units can be set near the boundary. In this case, by directly transmitting the call path switching request data including the extension number stored in the called extension number storage means and the identification code of the partner handset which is calculated by the identification code storage means to the connection device, Automatically switch the call route from machine-to-machine call to extension call using the wired part's call path, or from extension call using the wire part's call path to direct inter-slave call, and display and tone generation means Notify the user accordingly.

(2) The position detecting means in the control device detects the positions of all the slaves accommodated in the wireless telephone device, and notifies the slaves of the positional relationship between the slaves. When the two cordless handsets in the extension call are located in the same connection device zone or in the adjacent connection device zone, the two cordless handsets communicate voice data by the communication channel communication means. Is performed via the slave unit interface unit or the connection device interface unit, and at the same time, the control channel communication unit periodically sends the control data to the partner side slave unit via the slave unit interface unit. After that, the error rate detecting means and the timer managing means judge the mutual distance between the slaves, and the optimum call path is set. In addition, when the two cordless handsets in the extension call are not located in the zone of the same connection device or in the zone of the adjacent connection device, there is no possibility to talk directly between the cordless handsets. By notifying the slave unit of that fact, the slave unit stops sending of control data to the partner slave unit on a regular basis, and also stops the operations of the error rate detection means and the timer management means.

(3) The call path switch refers to the data written in the receiving buffer at regular intervals for the slot-counter slot number of each slot of the partner management section and stores it in the transmission buffer of the corresponding slot number. By writing, the user of the wireless telephone handset outside the zone can make an outgoing call to the outside line.

(4) When the mobile station in a call moves away from a position that does not belong to the radio zone of the base station and the reception level is lowered,
The presence of another mobile station waiting for reception in the radio zone of the base station is monitored, and a mobile station having a field strength of a predetermined level or higher is selected from among the mobile stations, and the mobile station is in the call using the mobile station as a relay station. Can secure a call.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a wireless telephone device according to an embodiment of the first invention. In FIG. 1, reference numeral 11 denotes a first unit accommodated in the wireless telephone device.
A slave unit, 12 is a slave unit control means constituted by a microprocessor or the like for main control of the first slave unit 11, and 13 is a demodulator / demodulator of voice data and control data. A slave unit interface means 14 for transmitting and receiving data to and from the connecting device interface means 14 for modulating and demodulating voice data and control data and transmitting and receiving data to and from a first connecting device 27, which will be described later. Control channel communication means for communicating control data with slave units or a connection device, 16 is a communication channel communication means for communicating voice data with a slave unit or a connection device on a communication channel, and 17 is a push for inputting a telephone number Operation means composed of buttons and buttons having other functions, switches, etc., 18 is a display means for displaying the operating state, operation method, etc., 19 Is a tone generating means for notifying the caller of the operating state, 20 is an error rate detecting means for detecting a communication error rate of received data received by the control channel communication means 15 at the time of calling or during a call,
Reference numeral 21 denotes the control channel communication means at the time of calling or talking.
Timer management means for managing the response time from the partner side device or the connection device to the transmission data from the device, 22 is an identification code for storing the identification codes of all the handset devices and all the connection devices accommodated in the wireless telephone device. Storage means (here, for simplification of explanation, the ID code given to the child device and the extension number are the same), 23 is the extension number of the callee input from the caller. Call destination extension number storing means for temporarily storing, 24 is voice interface means for processing a received voice signal and a transmitted voice signal, and 25 is an antenna for transmitting and receiving radio waves to and from a second handset 26 and a first connecting device 27 described later. , 26 is a second handset having the same configuration as the first handset 11, and 27 is an extension line call and an outside line call,
In the wireless unit, a first connection device that interfaces with the slave unit, and a second connection device 28 that has the same configuration as the first connection device 27
Connection device, 29 is a control device that controls call control, connection / disconnection of a communication path, and the like in the wireless telephone device, 30 is main control means configured by a microprocessor that controls the control device 29, and 31 is For internal and external calls,
A call path switch for connecting / disconnecting the call path, and 32 is a connecting device interface means for performing multiplexing / separation of control data and voice data, and for interfacing with the first connecting device 27 and the second connecting device 28. is there.

Here, in the wireless telephone device, all slave units and all connection units have ID codes. In the present embodiment, the first slave unit 11 has "001" and the second slave unit 26. Is "002" and the first connection device 27 is "00".
3 "and the second connecting device 28 is given an ID code of" 004 ".
Is located in a zone where radio waves can be transmitted and received to and from the first connecting device 27, and the second handset 26 is located in a zone where radio waves can be transmitted and received to and from the second connecting device 28.

With respect to the wireless telephone device configured as described above, a description will be given below of the case where an extension telephone call is made from the first handset 11 to the second handset 26 with reference to FIGS. 1 and 2. To do. First, the caller makes a first call to make an extension call.
The extension key (not shown) provided on the operating means 17 in the child device 11 is pressed (S11). At that time, the slave unit control means 12 operates the slave unit interface means by pressing the extension key.
13 is activated and the connection device interface means 14 is deactivated (S12). Next, the caller presses the extension "002" of the second handset 26 which is the called side (S13). At this time, the pressed extension number information is temporarily stored in the communication destination extension number storage means 23 (S14). Next, a call key (not shown) for transmitting the call data including the extension number is pressed (S15). When the calling key is pressed, a calling signal including the extension number information is sent from the control channel communication means 15 to the control channel via the slave unit interface means 13 (S16). At this time, at the same time when the calling signal is transmitted, the error rate detecting means 20 for detecting the error rate of the response signal and the timer managing means 21 are activated (S17). At this time, if the first handset 11 and the second handset 26 are located within a range in which the strength of the radio wave can be sufficiently communicated, a normal response signal is returned from the second handset 26 (S18 , S1
9), judging that it is possible to make an extension call directly between handset units,
Calls can be made between handset units that do not use the wired communication path
(S20).

However, in the case where the first slave unit 11 and the second slave unit 26 are not located within the range of sufficient communication in terms of the strength of the radio wave, and the response signal is not returned within the specified time (S18
No), the timer managing means 21 causes a time-out (S21), and the slave unit control means 12 causes the slave unit interface means 13 to operate.
By switching the transmission of the calling signal from the connection device interface means 14 to the connection device interface means 14 (S22), it is possible to switch to the extension calling by the communication path using the communication path of the wired part. Further, even when the response signal is returned, the strength of the radio wave is weak, and when the error rate detecting means 20 detects an error rate higher than the specified value due to noise or the like (YES in S19), the slave unit controlling means 12 is also operated at the same time. By switching the transmission of the calling signal from the slave unit interface means 13 to the connection device interface means 14.
(S22), the extension call is switched to a call route using the call route of the wired section. The connection device interface means 14 activated by the slave unit control means 12 has a new ID.
A calling signal including the code is sent to the first connecting device 27 (S23). The first connecting device 27 which has received the calling signal
The D code is confirmed, and the response signal including the ID code is returned to the first handset 11. After this, the first handset 11 captures an idle call channel (S24), and then the third handset which is the called side determined by the communication destination extension number storage means 23 and the identification code storage means 22. Send 26 dialing information
(S25). After that, the main control means 30 in the control device 29 establishes a call path by connecting the call path switch 31, and a call can be made on the call path via the wired part (S2
6).

Next, an explanation will be given of the operation when the first handset 11 and the second handset 26 move in the direction away from each other during the direct handset call, and the range exceeds the direct handset call enable range. Is performed according to FIGS. 1 and 3. During a direct handset call (S28),
The first handset 11 and the second handset 26 communicate with each other via the handset interface means 13 by the communication channel communication means 16 for voice data. At the same time, the control channel communication means 15 periodically transmits control data (S2
9) At this time, the error rate detecting means 20 and the timer managing means 21 monitor the control data (S30, S3).
1) If there is a normal response signal, the direct handset call is continued (S32), but if the handset handsets are located near the boundary of the direct handset call range and the error rate is higher than the specified value. If it is detected or no response signal is returned within a certain time, the slave unit control means 12 is the connection device interface means.
14 is activated (S33), and the destination of the control data is switched to the first connecting device 27 or the second connecting device 28 (S34). After that, by the control channel, the extension telephone call between the first handset 11 and the first connection device 27, and between the second handset 26 and the second connection device 28 is performed using the communication path of the wired part. The procedure for performing is performed (S35). At that time, the first handset 11 and the second handset 26 notify the user by the display means 18 and the tone generating means 19 (S36). After that, the main control means 30 in the control device 29 notifies the first handset 11 and the second handset 26 of the idle call channel, and simultaneously switches the call path of the wired part from the inter-handset call. It is possible to switch to the used extension call without interruption (S37).

Next, during the extension call using the communication path of the wired part, the first handset 11 and the second handset 26 moved in the directions toward each other and were positioned within the range where direct inter-handset communication was possible. The operation at that time will be described with reference to FIGS. 1 and 4. During an extension call using the communication path of the wired section (S40), the first slave unit 11 and the second slave unit 26 are connected by the call channel communication unit 16 via the connection unit interface unit 14 to the first connection unit 27 and the first connection unit 27. The voice data is communicated with the second connection device 28. At the same time, the control channel communication means 15 periodically transmits the control data to the partner side child machine via the child machine interface means 13 (S41). At this time, the error rate detection means
20 and the timer management means 21 monitor the control data (S42, S43), and when the first handset 11 and the second handset 26 are not located within the range where direct inter-handset communication is possible, Since the response signal is not returned within a fixed time or the error rate above the specified value is detected, the voice data is transmitted and received via the communication path of the wired section as described above (S4
Four). If the cordless handsets move toward each other and are located within the range where direct cordless cordless handset communication is possible, a response signal to the control data is detected, and then the error rate becomes less than the specified value. At this time, the child device control means 12 switches the transmission destination of the control data from the child device interface means 13 to the connection device interface means 14 (S45), and the first child device
11 and the first connecting device 27, and between the second handset 26 and the second connecting device 28, a procedure for direct inter-handset communication is performed (S46). At that time, the first slave unit 11 and the second slave unit 26 notify the user to that effect by the display means 18 and the tone generating means 19 (S47). After that, the main control means 30 in the control device 29 simultaneously transmits the control data for the first handset 11 and the second handset 26 to directly carry out the call between the handset, so that the call path of the wired part is transmitted. It is possible to switch from an extension call using a call to a direct call between handset units without interruption (S48).

By performing the above-mentioned operation, if within the range of the first connecting device 27 and the second connecting device 28,
No matter where the user moves during an extension call, the extension call can be made without interruption, and the use of unnecessary call path in the wired section can be reduced, and the call section of the wired section must be used for making an outside call. It is possible to open the communication path to the user who has to do.

Next, an embodiment of the second invention will be described with reference to the drawings. FIG. 5 is a block diagram showing the configuration of the wireless telephone device in the embodiment of the second invention.
In FIG. 5, 11 and 26 are slave units accommodated in the wireless telephone device, 12 is a slave unit control means configured by a microprocessor or the like for performing main control of the first slave unit 11, and 13 is voice data and control. A slave unit interface unit 14 that performs data modulation / demodulation and transmits / receives data to / from a second slave unit 26, which will be described later, performs modulation / demodulation of voice data and control data, and communicates with connection devices 33, 34, 35 described later. Connection device interface means for transmitting and receiving data, 15 is a control channel communication means for communicating control data with a slave unit or a connection device on a control channel, and 16 is a communication channel for communicating voice data with a slave unit or a connection device on a communication channel. Call channel communication means to perform, 17 is an operating means composed of push buttons for inputting telephone numbers and buttons and switches having other functions, 18 Is a display means for displaying the operating state and the operating method, 19 is a tone generating means for notifying the caller of the operating state, 20 is the received data received by the control channel communication means 15 at the time of calling or during a call. An error rate detecting means for detecting a communication error rate, 21 is a timer managing means for managing a response time from a partner side handset or a connection device to transmission data from the control channel communication means 15 at the time of calling or talking. Is an identification code storage means for storing the identification codes of all the cordless handsets and all the connection devices accommodated in the wireless telephone device,
23 is a callee extension number storage means for temporarily storing the extension number of the callee input from the caller, 24 is a voice interface means for processing the received voice signal and the transmitted voice signal,
Reference numeral 25 is an antenna for transmitting and receiving radio waves between the handset units 11 and 26 and with the connection devices 33, 34 and 35, and 33, 34 and 35 are connections for interfacing with the handset unit in the radio unit during internal and external calls. A device, 36 is a control device for controlling call control and connection / disconnection of a communication path in the wireless telephone device, 37 is a main control means constituted by a microprocessor for controlling the control device 36, and 38 is an extension call And 39, the call path switch that connects / disconnects the call path when making an external call.
Connection device interface means for performing multiplexing / separation of control data and voice data and for interfacing with the connection devices 33, 34 and 35, and 40 is a position for detecting the positions of all the slave units accommodated in the radio telephone device. It is a detection means. Here, in the wireless telephone device, all cordless handsets and all connection devices have ID codes. In the present embodiment, the first cordless handset 11 has “001” and the second cordless handset 26 has Is "002", the connecting device 33 is "003", the connecting device 34 is "004", and the connecting device 35 is "005". Further, as shown in FIG. 6, the connecting device 33 is zone 1, the connecting device 34 is zone 2,
The connection device 35 is assumed to be capable of wireless communication with the child device in the zone 3.

With respect to the wireless telephone device configured as described above, the operation of the wireless telephone device during an extension call will be described with reference to FIGS. 5, 6 and 7. Here, the types of call paths formed by the positional relationship of the slave units will be described. When the first handset 11 is located in the zone 1 and the second handset 26 is located in the zone 3, the distance between the two handsets is a long distance. You can make extension calls only through the route. First cordless handset 11 and second cordless handset 26
Are located in the same zone, there are a positional relationship in which direct inter-slave communication is possible and a situation in which direct inter-slave communication is not possible. For example, when the first handset 11 is located at the point 1 and the second handset 26 is located at the point 2, since the distance between the handset units is short, direct handset communication is possible. When the handset 11 is located at the point 1 and the second handset 26 is located at the point 3, the direct handset communication cannot be performed because the distance between the handset units is long. Also, when the first handset 11 and the second handset 26 are located in the adjacent zones,
There are cases where there is a positional relationship where direct phone calls can be made and where there is a positional relationship where direct phone calls cannot be made. For example, when the first handset 11 is located at the point 3 and the second handset 26 is located at the point 4, since the distance between the handset units is short, direct handset communication can be performed. When the handset 11 is located at point 1 and the second handset 26 is located at point 4, direct inter-handset communication is not possible because the distance between the handset units is long.

Next, the operation of the radiotelephone device will be described below in consideration of the types of call paths formed by the above-mentioned positional relationship of the slave units. When the first handset 11 and the second handset 26 are making an extension call on a call path using the call path of the wired part (S50), the handset 11, 26 is the call channel communication means 16
Connection device via connection device interface means 14
Communicating voice data with any of 33, 34, 35
(S51). At this time, the position detection means 40 in the control device 36,
It detects in which zone of the connected device the slave units 11, 26 are located.

If the first handset 11 and the second handset 26 are located in the same zone or in adjacent zones, direct inter-handset communication is possible as described above. Therefore, the control device 36 notifies the slave units 11 and 26 of control data indicating that fact via the control channel. The slaves 11, 26 that have received the notification (S52) receive the control channel communication means 15
By means of the slave unit interface unit 13, control data is periodically transmitted to the partner side slave unit (S53), and at the same time, the error rate detecting unit 20 and the timer managing unit 21.
The operation of is started (S54). At this time, the error rate detection means 20 and the timer management means 21 are monitoring the control data (S55, S56), and the first slave unit 11 and the second slave unit 26.
Is not in the range where you can talk directly between handset units,
Since the response signal is not returned for a fixed time or more, or the error rate of the specified value or more is detected, the voice path is not switched, and the voice data is transmitted / received via the voice path of the wired section (S51). At this time, if the slave units move toward each other and are located within a range where direct inter-slave communication is possible, a response signal to the control data is detected, and then the error rate becomes less than the specified value (S55). Y
ES, S56-less than specified value). At this time, the slave unit control means 12 switches the destination of the sex from the slave unit interface means 13 to the connection device interface means 14 (S57), and the slave units 11, 26.
And the connection devices 33, 34 and 35 are directly connected to each other (S58). At this time, the slave units 11 and 26 notify the user of the fact by the display means 18 and the tone generation means 19 (S59). After that, the main control means 37 in the control device 36 simultaneously transmits the control data for the slave units 11 and 26 to directly carry out the talk between the slave units, so that the direct call is made from the extension call using the call path of the wired section. The call can be switched to the machine-to-machine call without interruption, and the direct handset-to-machine call can be made (S60, S6
1).

Further, when the first handset 11 and the second handset 26 move away from each other and are located in the same zone or in a place other than the adjacent zones, it is possible that a direct handset call can be made. Therefore, the control device 36 notifies the slave units 11 and 26 of control data indicating that fact through the control channel. Upon receiving the notification (S52), the control channel communication means 15 stops the periodic transmission of control data to the partner side slave equipment (S62), and the error rate detection means 20 and the timer management means 21 Also stops the operation (S63).
Therefore, within the range of the connection devices 33, 34, and 35, the extension call can be made on an appropriate call path without interrupting the call regardless of where the user moves during the extension call, and the direct call between the handset units can be performed. When there is no possibility, the operation for taking the procedure for switching the call path is stopped, so that the power consumption of the handset can be saved. The operation at the time of calling the extension is exactly the same as the conventional one.

Next, an embodiment of the third invention will be described with reference to the drawings. FIG. 8 is a block diagram of a radio telephone master set according to the third aspect of the invention, and FIG. 9 shows a constitution of a radio telephone sub-set. In FIGS. 8 and 9, 41 is a radio telephone master unit, 42 is an antenna having a function of transmitting and receiving radio signals into the air, and 43 is a digital signal of a call channel and a control channel using the TDMA method. To a wireless signal and vice versa, the wireless interface section 44 has a function of converting a wireless signal into a digital signal, and 44 stores the data to be put in each transmission slot of the TDMA system and inputs it to the wireless interface section 43. A transmitting buffer, 46 is a receiving buffer that stores the output from the wireless interface unit 43, 46 is a CODEC that performs digital / analog conversion and analog / digital conversion, 47 is an outside line interface unit that interfaces with an outside line, and 48 is an outside line , 49 is T
A slot management unit that manages the slots of the DMA system, and a control unit 50 that manages them.

Reference numeral 51 is a wireless telephone handset, 52 is an antenna having a function of transmitting and receiving a radio signal into the air, and 53 is a digital signal of a communication channel and a control channel using the TDMA method. The wireless interface unit 54 has a function of converting a wireless signal into a digital signal and vice versa. A transmission buffer 54 stores data to be put in each transmission slot of the TDMA system and is used as an input to the wireless interface unit 53. , 55 is a receiving buffer for storing the output from the wireless interface section 53, 56 is a speech path switch for switching an input digital signal to an output digital signal in a time division manner, 57 is a digital / analog conversion,
CODE for analog / digital conversion and tone generation
C and 58 are microphones that are voice input means for a call, 59 are speakers that are voice output means, and 60 is a slot management of the TDMA system and a slot for storing the slot number of the call partner.
The partner management unit, 62 is a dial input unit for selecting a call partner, 63 is an extension call button for making a call with the wireless telephone slave unit 51, 64 is an outside call button for making a call with an outside line,
Reference numeral 61 is a control unit for managing these.

A method of making an outside line call and an outside line call from a wireless telephone handset outside the zone in the wireless telephone apparatus according to the third embodiment of the present invention will be described below with reference to FIG. Set up a call between wireless handset units by the method described in the conventional technology.
(S70). Wireless telephone handset outside the zone-1 is an outside line call button 64
Is pressed (S71), and the dialing unit 62 is pressed to press the outside line calling number (S72). When completed, an outside line call request message including the outside line number information is transmitted to the wireless telephone handset-2 in the zone through the control channel (S73). Upon receiving the outside line call request, the wireless telephone handset-2 uses the transmission buffer 54, the wireless interface unit 53, and the antenna 52 to transmit the data link establishment request through the control channel in the same manner as the conventional technique. , To the wireless telephone base unit 41 (S74). The radio telephone base unit 41 passes the received message to the control unit 50 using the antenna 42, the wireless interface unit 43, and the reception buffer 45, as in the conventional technique. The radio telephone base unit that has received the data link establishment request transmits the data link establishment response message to the radio telephone handset-2 on the control channel using the transmission buffer 44, the radio interface unit 43, and the antenna 42 (S75). ). Wireless telephone handset-2
Then, when the received data link establishment response message is passed to the control unit 61 of the wireless telephone handset-2 using the antenna 52, the wireless interface unit 53, and the reception buffer 55,
A calling message including the outside line number received in the outside line calling request is transmitted to the wireless telephone base unit using the control channel (S76). The wireless telephone base unit that received the calling message
An outside line calling process is performed (S77). Upon receiving the response from the outside line, the wireless telephone base unit transmits a response message including the slot number for outside line communication to the wireless telephone handset-2 (S78). At this time, the control unit 50 of the radio telephone base unit writes the information of the inter-handset call in the column for the slot number of the slot management unit used between the radio telephone handsets. Receiving the response message, the wireless telephone handset-2 writes the external telephone call in the column of the notified slot for the external telephone call-the usage of the corresponding slot of the partner management unit 60, and synchronizes on the designated slot. The message is transmitted to the wireless telephone base unit (S80).

At this time, the control unit 61 of the wireless telephone slave unit-2 is
Slot-Enter the slot number to be used for an outside line call in the field of the partner slot number of the slot number used for the handset call of the partner management unit 60, and enter the handset in the field of the partner slot number of the slot number to be used for the outside line call. Enter the slot number used for the inter-call. Upon receiving the synchronization message on the call channel, the wireless telephone master unit transmits the synchronization message on the call channel (S81) and shifts to the call in progress (S83). Upon receiving the synchronization message, the wireless telephone handset-2 notifies the wireless telephone handset-1 of an outside call response on the control channel (S8
2). From this point, the call path switch 56 of the wireless telephone cordless handset-2
Is a wireless telephone handset call, microphone 58 and buffer for transmission
54, the receiving buffer 55 and the speaker 59 are connected, the receiving buffer 55 of the slot number of the slot number of the partner management unit 60 is the receiving buffer 55 of the receiving slot number, and the receiving buffer 55 is the receiving buffer 55 of the receiving side. The transmission buffer 54 of the slot number is connected. A wireless telephone handset that receives an external call response
-1 is in an outside line call at this point (S83).

The fourth embodiment of the present invention will be described below with reference to the drawings. FIG. 11 is a block diagram showing the configuration of the wireless telephone device according to the fourth embodiment of the present invention.
In FIG. 11, the first control unit provided in the mobile station 70
The mobile station 70 stores an inter-mobile station wireless interface 80 for the mobile station 70 to perform transmission / reception between the mobile stations, an antenna 73 connected to the inter-mobile station wireless interface 80, and the ID of the relay source mobile station. It differs from the conventional mobile station in that a relay source mobile station ID storage unit 85 is additionally connected. Further, the base station 71 is additionally connected to a conventional base station, which is a mobile station ID conversion unit 92 for converting the IDs of the mobile station in communication and the relay mobile station.

The relay processing of the wireless telephone device of the present invention configured as described above will be described based on the flowcharts shown in FIGS. 12, 13 and 14. FIG. 12 shows the operation in the case of executing an out-of-range call when the mobile station in the call leaves the wireless zone of the base station. First, if the mobile station 70 leaves the wireless zone of the base station 71 during a call and does not detect the deterioration of the electrolytic strength in S85, S85 is repeated. When the first control unit 77 detects the deterioration of the electrolytic strength, the first control unit 77 sends a handoff request to the control device via the base station 71 as to whether the free communication channel in the wireless zone of the adjacent base station can be switched (S86). If handoff is possible, S85 and subsequent steps are repeated. If the handoff is not possible, the first control unit 77 sends a relay station use request to the base station 71 from the inter-base station wireless interface 78 (S87). Next, if the first control unit 77 cannot receive the relay station connection enable response signal from the inter-base station wireless interface 78, it sounds a warning sound (S88, S89) and displays that the call is disconnected. It is displayed on the section 90 and disconnection processing with the base station 71 is performed (S90). When the relay station connection enable response signal is received, the control channel and the number of communication channels of the switching destination for communicating with the relay mobile station are received from the base station 71 (S9
1). Next, the first control unit 77 establishes a radio link with the relay mobile station via the inter-mobile station interface 80 and the antenna 73, in addition to the channel wirelessly connected to the base station 71, based on the number of switching channels received in S91. Tension (S92). When the wireless link has been established, communication with the relay mobile station is resumed (S93). When the relay mobile station makes a call or receives a call in this state, the call origination / reception information is received from the relay mobile station (S94), the first control unit 77 sounds a warning sound (S95), and the call is disconnected. Is displayed on the display unit 90, and disconnection processing with the relay mobile station is performed (S96). If the outgoing / incoming information is not received, S94 is repeated.

FIG. 13 shows that in the wireless zone of the base station 71,
The operation when the mobile station in the reception waiting state executes the relay process is shown. When the mobile station 70 receives a relay use request from the base station 71 when the mobile station 70 is in the reception waiting state within the wireless zone of the base station 71 (S97), the first control unit 77 determines that the base station is not available when the relay is impossible. Send the relay disable instruction signal to station 71
(S98, S101). If relay is possible, a relay permission instruction signal is sent to the base station 71 (S99), and if the relay source mobile station ID cannot be received from the base station 71, S101 is carried out. Upon receiving the ID of the relay source mobile station, the first control unit 77 stores the ID of the relay source mobile station in the relay source mobile station ID storage unit 85 (S10).
2). Next, the control channel and the number of communication channels of the switching destination are received from the base station 71 (S103), and the first control unit 77
In addition to the channel wirelessly connected to the base station 71, S103
A radio link is established between the relay source mobile station and the relay source mobile station via the inter-mobile station wireless interface 80 and the antenna 73 (S104), and the control channel and the call used between the relay source mobile station and the base station 71 are received. A wireless link is established with the base station 71 to switch to the channel (S105). When the wireless link is completed, relay is started as a relay mobile station between the relay source mobile station and the base station (S106). When there is an incoming call from the base station 71 to the relay mobile station during relay, the relay source mobile station is notified that the relay mobile station has received the incoming call (S108), the relay process is terminated, and the relay mobile station Using the control channel and call channel used for relay processing as they are,
Move to incoming call processing. When the relay mobile station makes a call to the base station 71 during relay (S109), it notifies the relay source mobile station that the relay mobile station is making a call to the base station 71, terminates the relay process, and repeats the relay process. The mobile station uses the control channel and the communication channel used for the relay processing as they are, and shifts to the transmission processing (S110).

FIG. 14 shows that in the wireless zone of the base station 71,
The operation of relay connection on the base station 71 side is shown when the relay mobile station is executing the relay process. First, the second control unit 81
When the relay station use request is received from the mobile station (S111), the second control unit 81 selects from the mobile stations registered in the location registration management unit 84 the mobile station waiting for reception within the wireless zone of the base station 71. And monitor the status of the mobile station on the control channel
(S112). If the mobile station is not a relayable station, relay processing is not performed (NO in S113). If it is a relayable station, it transmits a relay use request signal to the mobile station (S114). If the relay permission signal cannot be received from the mobile station, the relay process ends (NO in S115). If you receive the relay permission signal,
The second control unit 81 transmits a relay station connection permission response to the mobile station that has transmitted the relay station use request (S116). In addition, the second control unit 81 sends the relay mobile station ID to the relay mobile station.
Is transmitted (S117), and the control channel and the number of communication channels of the switching destination for communicating with the base station 71 and the relay source mobile station are transmitted to the relay mobile station (S118). The control channel and the number of communication channels for communication between the relay mobile station and the relay source mobile station transmitted to the relay mobile station in S118 are transmitted to the relay source mobile station (S119). Next, the second controller 81 establishes a wireless link with the relay mobile station (S120). However, when establishing a wireless link, the mobile station I under control between the relay mobile station and the base station 71 is used.
Although the ID of the relay mobile station is used as D, when the ID of the mobile station is exchanged from the communication unit 91 of the base station 71 through the extension, the ID of the relay mobile station is converted by the mobile station ID conversion unit 92.
Is converted to the ID of the relay source mobile station and transmitted from the communication unit 91 (S121). Conversely, when received from the communication unit 91,
The mobile station ID conversion unit 92 converts the relay source mobile station ID into a relay mobile station ID. When the ID conversion is performed in S121, relaying with the relay mobile station is started (S122). When an incoming call occurs in the relay mobile station during the resumption of the call in S122 (S123), an incoming signal is sent to the relay mobile station (S124). Next, a call disconnection process between the base station 71 and the relay source mobile station is performed (S125). In addition, S126
When a call signal is received from the relay mobile station when the call is resumed with the relay mobile station, the processing of S125 is performed and the relay processing ends.

FIG. 15 shows a schematic block diagram of the radiotelephone device of the present invention configured as described above. As shown in Figure 15, the mobile station 96
Even if the mobile station 96 leaves the wireless zone 97 of the base station 84 during a call, there is a relay mobile station 95 waiting for reception that can be a relay station in the wireless zone 97 of the base station 94. If it exists in the zone 98, it is possible to communicate without disconnecting the call. Reference numeral 99 is an extension that disconnects the control device (not shown) and the base station 94 by wire.

[0051]

As is apparent from the first aspect of the present invention, within the range of the connection device, the extension call can be made through an appropriate call path without interruption regardless of where the user moves during the extension call. In addition, it is possible to reduce unnecessary use of the call path in the wired part, and open the call path to the user who must use the call path of the wired part for making an outside call. Further, as is apparent from the second invention,
Within the range of the connection device, no matter where the user moves during the extension call, the extension line call can be performed by an appropriate call route without interruption, and the zone detection means in the connection device allows mutual extension By detecting the positional relationship, when there is no possibility that a telephone call can be made directly between the handset units, the handset unit stops the operation for switching the call path, so that power consumption of the handset unit can be saved.

Furthermore, as is apparent from the third invention,
A user of a wireless telephone handset outside the zone can make an outside line using the wireless telephone handset inside the zone, and the zone user can make an outside line call without moving to the zone. . Further, as is apparent from the fourth aspect of the invention, even if a mobile station in a call moves to a position that does not belong to any of the radio zones of any base station, there is a waiting state between the base station and the mobile station that can serve as a relay station. If there is a mobile station, there is an effect that communication quality is not deteriorated, communication can be performed in a conventional dead zone, and the serviceability of the wireless telephone device can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a wireless telephone device according to an embodiment of the first invention.

FIG. 2 is a flow chart showing an extension call process of the handset controller of the wireless telephone device in the embodiment of the first invention.

FIG. 3 is a flow chart showing a switching process from a direct handset call by a handset control means of a radiotelephone device in the embodiment of the first invention to an extension call using a call path of a wired section.

FIG. 4 is a flowchart showing a process of switching from an extension call to a direct inter-subunit call using a communication path of a wired section of a handset control means of a wireless telephone device in an embodiment of the first invention.

FIG. 5 is a configuration diagram of a wireless telephone device according to an embodiment of the second invention.

FIG. 6 is a zone relation diagram of a connection device of a wireless telephone device according to an embodiment of the second invention.

FIG. 7 is a flowchart of handset handset path switching of handset control means of the radiotelephone device according to the second embodiment of the present invention.

FIG. 8 is a configuration diagram of a radio telephone master unit according to an embodiment of the third invention.

FIG. 9 is a configuration diagram of a wireless telephone handset according to an embodiment of the third invention.

FIG. 10 is an outside-line calling / calling sequence of the out-of-zone wireless telephone handset in the embodiment of the third invention.

FIG. 11 is a block diagram showing a configuration of a wireless telephone device according to an embodiment of the fourth invention.

FIG. 12 is a flow chart showing an out-of-coverage area communication means of a mobile station in the embodiment of the fourth invention.

FIG. 13 is a flowchart showing a relay means of a mobile station in the embodiment of the fourth invention.

FIG. 14 is a flowchart showing a relay station connecting means of a base station in the embodiment of the fourth invention.

FIG. 15 is a schematic configuration diagram of a wireless telephone system according to an embodiment of the fourth invention.

FIG. 16 is a configuration diagram of a conventional wireless telephone device in the first invention.

FIG. 17 is a flowchart showing a cordless handset extension call processing of a cordless handset control means of the conventional wireless telephone device in the first invention.

FIG. 18 is an example of a slot configuration of a TDMA wireless system according to a third invention.

FIG. 19 is a block diagram of a conventional radio telephone master unit in the third invention.

FIG. 20 is a configuration diagram of a conventional wireless telephone handset according to a third invention.

FIG. 21 is a call sequence between radio telephone handset units of the conventional radio telephone base unit in the third invention.

FIG. 22 is an outside line calling / calling sequence of the conventional wireless telephone handset according to the third invention.

FIG. 23 is a block diagram showing a configuration of a conventional wireless telephone device according to a fourth invention.

[Explanation of symbols]

11, 101 ... First slave unit, 12, 102 ... Slave unit control means, 13
... cordless handset interface means, 14 ... connection device interface means, 15 ... control channel communication means, 16 ... call channel communication means, 17, 105 ... operating means, 18 ... display means, 19 ... tone generating means, 20, 106 ... error Rate detecting means, 21, 107 ... Timer managing means, 22, 108 ... Identification code storing means, 23 ... Call destination extension number storing means, 2
4, 110 ... Voice interface means, 25, 42, 52, 72,
73, 74, 111, 131, 141, 163, 165 ... Antenna, 26, 1
12 ... Second slave unit, 27 ... First connecting device, 28 ... Second connecting device, 29, 36, 115 ... Control device, 30, 37, 116 ...
Main controller, 31, 38, 56, 117 ... Speech path switch, 3
2, 39, 118 ... Connecting device interface means, 33, 34,
35 ... Connection device, 40 ... Position detecting means, 41, 130 ... Wireless telephone master unit, 43, 53, 132, 142 ... Wireless interface unit, 44, 54, 133, 143 ... Transmission buffer, 45, 55, 13
4,144 ... Reception buffer, 46,57,135,145 ... COD
EC, 47, 136 ... External line interface, 48,137 ...
Outside line, 49, 138, 148 ... Slot management section, 50, 61, 13
9, 149 ... Control unit, 51, 140 ... Wireless telephone slave unit, 58, 146
... Microphone, 59,147 ... Speaker, 60 ... Slot-remote control section, 62,150 ... Dial input section, 63,151 ... External call button, 64,152 ... External call button, 70,161
… Mobile stations, 71, 162… Base stations, 75, 76, 166, 167…
Base station ID storage unit, 77, 168 ... First control unit, 78, 1
69 ... Base station radio interface, 79, 80, 170 ... Mobile station radio interface, 81, 172 ... Second control unit, 82, 83, 173, 174 ... Mobile station ID storage unit, 84, 17
5 ... Location registration management unit, 85 ... Relay source mobile station ID storage unit,
86,177 ... Operation part, 87,178 ... Transmitter, 88,179 ...
Handset, 89,180 ... Voice interface, 90,181 ...
Display unit, 91, 182 ... Communication unit, 92 ... Mobile station ID conversion unit, 93, 184 ... Extension lines.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location 7304-5K H04Q 7/04 K

Claims (7)

[Claims] 1. A radiotelephone device accommodating a plurality of cordless handsets capable of an external call and an extension call, wherein when the cordless handset of the radiotelephone device conducts an extension call, the cordless voice device and the control data are demodulated. In the control channel, a cordless handset interface means for transmitting and receiving the data, a connection device interface means for modulating and demodulating voice data and control data and transmitting and receiving the data to and from the connection device when performing an internal call or an external call Display the control channel communication means for communicating control data with the child devices or the connection device, the communication channel communication means for communicating voice data with the child devices or the connection device on the call channel, and the operating state and operation method. Display means, tone generating means for notifying the caller of the operating state, and when making or calling a call. An error rate detecting means for detecting a communication error rate of received data received by the control channel communication means at the time of talking, and a partner side device or connection for transmission data from the control channel communication means at the time of calling or talking. Timer management means for managing the response time from the device, identification code storage means for storing the identification codes of all cordless handsets and all connected devices accommodated in the wireless telephone device, and temporarily storing the extension number of the other party During a direct inter-slave communication, the slave performs communication of voice data by the call channel communication means via the slave interface means, and at the same time by the control channel communication means. Control data is periodically sent to the partner side slave unit via the slave unit interface means, and the control data for the control data is transmitted. The status of the answer signal by monitoring by the error rate detection means and the timer managing unit, the radio telephone apparatus characterized by determining the mutual distance between the handset that varies with movement of the user. 2. When the mutual distance between the handset units is judged and the range where direct inter-handset communication is possible is exceeded, it is determined by the extension number and the identification code storing unit stored in the destination number storing unit. By transmitting call path switching request data including the identification code of the other handset to the connection device, the call path is automatically switched from the direct handset call to the extension call using the call path of the wired part. Claim 1
The described wireless telephone device. 3. During an extension call using a call path of a wired section,
The slave unit performs communication of voice data by the communication channel communication means through the connection device interface means, and at the same time,
The control channel communication means periodically sends the control data to the side slave unit via the slave unit interface means, and the state of the response signal to the control data is monitored by the error rate detecting means and the timer managing means. , If the mutual distance between the handset units, which changes due to the user's movement, is judged, and if the handset unit is located within a range where direct inter-handset communication is possible, the extension number and the identification code storage unit stored in the destination extension number storage unit are used. By automatically transmitting the call route switching request data including the identification code of the partner handset to the connection device, the call route is automatically switched from the extension call using the call route of the wired part to the direct call between handset units. The wireless telephone device according to claim 1, wherein: 4. The radiotelephone device according to claim 1, wherein the display means and the tone generating means notify the user of the fact that the call path is automatically switched. 5. A radiotelephone device accommodating a plurality of cordless handsets capable of an external call and an extension call, wherein when the cordless handset of the radiotelephone device performs an extension call, the cordless voice device and the control data are modulated and demodulated. In the control channel, a cordless handset interface means for transmitting and receiving the data, a connection device interface means for modulating and demodulating voice data and control data and transmitting and receiving the data to and from the connection device when performing an internal call or an external call Control channel communication means for communicating control data with slave units or a connecting device, call channel communication means for communicating voice data with slave units or a connecting device on a call channel, and the above-mentioned control at the time of calling or during a call Error rate for detecting communication error rate of received data received by channel communication means Detecting means, timer managing means for managing the response time from the partner side handset or the connection device to the transmission data from the control channel communication means at the time of calling or talking, and all of the wireless telephone devices accommodated in the wireless telephone device. An identification code storage means for storing the identification codes of the slave unit and all the connection devices, a call destination extension number storage means for temporarily storing the extension number of the other party, and a control device for the radio telephone device, which are accommodated in the radio telephone device. The position detection means for detecting the positions of all the slave units are provided, and during extension calls, the slave units are in the same connection device zone or in the adjacent connection device zone by the position detection means in the control device. A wireless telephone device characterized in that a handset performs an operation for automatically switching a communication path only when it is located inside. 6. A digital signal of a call channel and a control channel is converted into a radio signal by using an antenna having a function of transmitting a radio signal into the air or receiving from the air and a TDMA method, and vice versa. A wireless interface unit having a function of converting a wireless signal into a digital signal;
Stores data to be put in each transmission slot of the DMA system,
A transmission buffer that is an input to the wireless interface unit, a reception buffer that stores an output from the wireless interface unit, a CODEC that performs digital / analog conversion and analog / digital conversion, and an external line interface unit that interfaces with an external line. A slot management unit that manages TDMA slots, a wireless telephone master unit that includes a control unit that manages the slots, an antenna that has a function of transmitting and receiving radio signals into the air, and TDMA. A wireless interface unit having a function of converting digital signals of a call channel and a control channel into a wireless signal and vice versa, and data to be put in each transmission slot of the TDMA method are stored. And a transmission buffer for input to the wireless interface section, A reception buffer that stores the output from the wireless interface unit, a call path switch that switches an input digital signal to an output digital signal in a time division manner, a CODEC that performs digital / analog conversion and analog / digital conversion, and a voice for a call. A microphone as an input unit, a speaker as an audio output unit, a slot management of the TDMA system and a slot-correspondence management unit stored in the communication partner, a dial input unit for selecting a communication partner, a call with a wireless telephone slave unit. It consists of an extension call button for making a call, an outside call button for making a call to an outside line, and a wireless telephone handset consisting of a control unit that manages these. When you are outside the possible range (zone), call another wireless telephone handset in the zone and then make an outside line to The radiotelephone handset in on as repeater, a radio telephone apparatus characterized by having a function that enables the external call. 7. A base station connected to a station line having a conversion means for converting the IDs of a mobile station and a relay station in a call, an antenna section for transmitting and receiving between the mobile stations, and a radio interface between mobile stations. Means and a mobile station that wirelessly communicates with the base station having a storage means for storing the ID of the mobile station of the relay source, and the mobile station is moved to a position that does not belong to the radio zone of any base station during a call. When the reception level drops,
The base station monitors whether or not there is another mobile station waiting for reception with the mobile station, selects a mobile station with a certain level of electric field strength or more, and wirelessly selects that mobile station as a relay station. A wireless telephone device characterized by being connected.