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CN1071981C - Digital mobile terminal automatically switching between public and private modes - Google Patents

Digital mobile terminal automatically switching between public and private modes Download PDF

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Publication number
CN1071981C
CN1071981C CN95113186A CN95113186A CN1071981C CN 1071981 C CN1071981 C CN 1071981C CN 95113186 A CN95113186 A CN 95113186A CN 95113186 A CN95113186 A CN 95113186A CN 1071981 C CN1071981 C CN 1071981C
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mesh station
public
mobile terminal
digital mobile
special
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CN1135153A (en
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高桥直道
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NEC Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/105—PBS [Private Base Station] network

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A digital mobile terminal 201 is operable in two modes. When a call is to be set up, i.e. an off-hook signal is detected, the terminal first attempts to communicate in a private mode with a private base station 203. If this fails, i.e. no connection is made within a time period set by a timer, then the terminal switches to a public mode. The terminal attempts to communicate with a public base station 202 in a public mode until another time period expires. In this way, cheaper rate calls are always attempted first even if a user forgets to change the position of a mode change switch from receiving calls in the public cellular system.

Description

在数字移动终端与公用网孔和 专用网孔之一之间提供连接的方法Method of providing a connection between a digital mobile terminal and one of a public cell and a private cell

本发明一般地涉及包括公用网孔站和专用网孔站的数字移动通信系统，特别涉及数字移动终端和进行该数字移动终端到公用的或专用的网孔站的连接。The present invention generally relates to digital mobile communication systems including public cell sites and private cell sites, and more particularly to digital mobile terminals and making connections of the digital mobile terminals to public or private cell sites.

近来，称为个人可携带的电话系统(PHS)的数字电话系统除了装备家庭使用的专用网孔站之外，已装备了室外使用的公用网孔站。公用网孔站接到ISDN公用线路，而专用网孔站接到用户线。移动电话终端一般装备一个人式模式开关，在公用模式与专用与模式之间自动地改变移动电话终端的操作模式。当将它带到室外时，用户设定该人工模式开关到公用模式操作，允许移动电话终端进行到最近的公共网孔站的连接。当在家时，用户设定人工模式开关到专用模式位置，允许它进行到专用网孔站的连接。Recently, a digital telephone system called a personal portable telephone system (PHS) has been equipped with a public cell site for outdoor use in addition to a dedicated cell site for home use. Public cell sites are connected to ISDN public lines, while private cell sites are connected to subscriber lines. Mobile phone terminals are generally equipped with a one-man mode switch to automatically change the operating mode of the mobile phone terminal between a public mode and a private mode. When taking it outdoors, the user sets the manual mode switch to public mode operation, allowing the mobile phone terminal to make a connection to the nearest public cell site. When at home, the user sets the manual mode switch to the private mode position, allowing it to make connections to private cell sites.

但是，在公用网孔站位于用户家附近时，专用网孔站和公共网孔站的相应无线电小区可能重叠，允许移动电话终端进行到公用和专用网孔站的连接。由于目前公用和用户连接业务的收费不同的，用户连接业务收费较少，用户将设定人工模式开关到专用模式位置。在这种情况下当人工模式开关不小心地设定到公用模式时，将按照连接时间数量对用户帐户收取公用连接业务费用，而他/她不知道。However, when the public cell site is located near the user's home, the corresponding radio cells of the private cell site and the public cell site may overlap, allowing mobile telephone terminals to make connections to both the public and private cell sites. Since the charges for public and user connection services are different at present, and the charges for user connection services are less, the user will set the manual mode switch to the dedicated mode position. In this case when the manual mode switch is accidentally set to public mode, the user account will be charged for the public connection service by the amount of connection time without his/her knowledge.

本发明的一个目的是提供一种数字移动终端和一种连接方法，该方法可避免位于由安装在用户家里的专用网孔站和接近家里的公用网孔站提供的无线电小区的重叠区内的数字移动终端的不小心连接。An object of the present invention is to provide a digital mobile terminal and a connection method which can avoid the possibility of being located in the overlapping area of radio cells provided by a private cell site installed at the user's home and a public cell site close to the home. Accidental connection of digital mobile terminal.

本发明的另一个目的是提供一种数字移动终端和一种连接方法，该方法可自动地进行数字移动终端到专用网孔站或公用网孔站的可靠连接。Another object of the present invention is to provide a digital mobile terminal and a connection method which can automatically perform reliable connection of the digital mobile terminal to a private cell site or a public cell site.

根据本发明的数字移动终端在公共模式和专用模式之间以给予较高优先权的一个自动地转换。更具体地讲，当在公用模式时，通过摘机迫使数字移动终端进入专用模式，然后开始到专用网孔站的预定呼叫序列。如果到专用网孔站的连接失败，数字移动终端自动地转换到公用模式，然后进行到公共网孔站的呼叫。The digital mobile terminal according to the present invention switches between the public mode and the private mode automatically with the one given higher priority. More specifically, when in public mode, the digital mobile terminal is forced into private mode by going off-hook, and then begins a predetermined call sequence to the private cell site. If the connection to the private cell site fails, the digital mobile terminal automatically switches to the public mode and then makes calls to the public cell site.

根据本发明的一个方面，检测数字移动终端的操作模式，它是公用模式和专用模式之一。公用模式使数字移动终端工作，以便连接到公用网孔站，而专用模式使该数字移动终端工作，以便连接到专用网孔站。在该数字移动终端处在公用模式状态由于检测到用户操作而出现呼叫请求时，迫使数字移动终端转移到专用模式。因此，根据专用模式请求到专用网孔站的第一连接。如果到专用网孔站的第一连接失败，数字移动终端从专用模式转换到公用模式，然后根据公用模式请求到公用网孔站的第二连接。According to an aspect of the present invention, an operation mode of a digital mobile terminal is detected, which is one of a public mode and a private mode. The public mode operates the digital mobile terminal for connection to a public cell site, and the private mode operates the digital mobile terminal for connection to a private cell site. When the digital mobile terminal is in the public mode state and a call request occurs due to detection of user operation, the digital mobile terminal is forced to transfer to the private mode. Accordingly, a first connection to the private cell site is requested according to the private mode. If the first connection to the private cell site fails, the digital mobile terminal switches from the private mode to the public mode, and then requests a second connection to the public cell site according to the public mode.

在对于预定的定时器值复位定时器时，根据专用模式可请求到专用网孔站的第一连接。如果定时器达到预定的定时器值而没有从专用网孔站收到控制信号，则迫使数字移动终端转换到公用模式。Upon resetting the timer for a predetermined timer value, a first connection to the private cell site may be requested according to the private mode. If the timer reaches a predetermined timer value without receiving a control signal from the private cell site, the digital mobile terminal is forced to switch to the public mode.

而且，当对于该预定的定时器值复位该定时器时，根据公用模式可请求到公用网孔站的第二连接。而如果该定时器达到该预定的定时器值而没有从公用网孔站收到控制信号时，该数字移动终端停止呼叫。Also, when the timer is reset for the predetermined timer value, a second connection to the public cell site may be requested according to the public mode. And if the timer reaches the predetermined timer value without receiving a control signal from the public cell site, the digital mobile terminal stops calling.

图1是表示根据本发明的实施例的数字无绳电话终端的功能配置的方框图；FIG. 1 is a block diagram showing a functional configuration of a digital cordless telephone terminal according to an embodiment of the present invention;

图2是表示位于由公用网孔站和专用网孔站提供的无线电小区的重叠区中的数字无绳电话终端操作的示意图；Figure 2 is a schematic diagram showing the operation of a digital cordless telephone terminal located in an overlapping area of radio cells provided by a public cell site and a private cell site;

图3是表示根据本发明实施例处于公用模式的数字无绳电话终端的连接过程的流程图；和3 is a flow chart showing a connection process of a digital cordless telephone terminal in a public mode according to an embodiment of the present invention; and

图4是表示根据该实施例处于专用模式的数字无绳电话终端的连接过程的流程图。Fig. 4 is a flow chart showing the connection procedure of the digital cordless telephone terminal in the dedicated mode according to this embodiment.

参见图1，根据本发明的无绳电话终端主要包括一个RF(射频)系统10，一个基带系统11和一个控制系统12。RF系统10包括一个天线101，一个天线开关102，一个RF接收机103，一个RF发射机104和一个频率合成器105。天线101接到天线开关102，它又接到RF接收机103和RF发射机104。RF接收机103变换RF接收信号为基带接收信号并且输出它到基带系统11。RF发射机104变换从基带系统11接收的基带发送信号为RF发送信号并且通过天线开关102输出它到天线101。频率合成器105分别提供变化的基准频率到RF接收机103和RF发射机104，并且根据频控制信号改变接收频和发送频率。Referring to FIG. 1, a cordless telephone terminal according to the present invention mainly includes an RF (Radio Frequency) system 10, a baseband system 11 and a control system 12. Referring to FIG. The RF system 10 includes an antenna 101 , an antenna switch 102 , an RF receiver 103 , an RF transmitter 104 and a frequency synthesizer 105 . Antenna 101 is connected to antenna switch 102 which in turn is connected to RF receiver 103 and RF transmitter 104 . The RF receiver 103 converts the RF reception signal into a baseband reception signal and outputs it to the baseband system 11 . The RF transmitter 104 converts the baseband transmission signal received from the baseband system 11 into an RF transmission signal and outputs it to the antenna 101 through the antenna switch 102 . The frequency synthesizer 105 provides varying reference frequencies to the RF receiver 103 and the RF transmitter 104, respectively, and changes the receiving frequency and the transmitting frequency according to the frequency control signal.

基带系统11包括一个解调器106，一个信道编码器与解码器(CODEC)107，该信道CODEC 107包括一个TDMA/TDD控制电路，一个调制器108和一个话音CODEC109。基带接收信号由解调器106解调，然后由信道CODEC107和话音CODEC109解码为接收的话音信号，该话音信号由扬声器110再生。另一方面，麦克风111产生发送的话音信号，该信号由话音CODEC109和信道CODEC107编码。该信道编码的发送信号由调制器108调制为基带发送信号，该发送信号输出到RF系统10的RF发射机104。信道CODEC107输出该频率控制信号到频率合成器105并且输出定时控制信号到RF系统10，用于发送和接收定时控制。The baseband system 11 includes a demodulator 106, a channel coder and decoder (CODEC) 107 including a TDMA/TDD control circuit, a modulator 108 and a voice CODEC 109. The baseband received signal is demodulated by demodulator 106 and then decoded by channel CODEC 107 and voice CODEC 109 into a received voice signal which is reproduced by speaker 110. On the other hand, the microphone 111 produces a transmitted voice signal, which is coded by the voice CODEC 109 and the channel CODEC 107 . The channel-coded transmit signal is modulated by modulator 108 into a baseband transmit signal, which is output to RF transmitter 104 of RF system 10 . Channel CODEC 107 outputs the frequency control signal to frequency synthesizer 105 and outputs a timing control signal to RF system 10 for transmission and reception timing control.

RF系统10和基带系统11的操作由控制系统12控制。该控制系统12包括一个处理器112，一个存储器113，一个方式开关定时器114和用于显示器116及键盘117的一个控制器115。The operation of the RF system 10 and the baseband system 11 is controlled by a control system 12 . The control system 12 includes a processor 112 , a memory 113 , a mode switch timer 114 and a controller 115 for a display 116 and a keyboard 117 .

存储器113预先存储专用设定数据、公用设定数据、识别码(ID)，专用网孔站的识别码(专用CS-ID)和公用网孔站的识别码(公用CS-ID)。专用设定数据包括用于包括到专用网孔站的连接建立的专用模式操作的发送与接收频率数据和其它需要数据。公共设定数据包括公用方式操作的发送与接收频率数据和其它需要的数据。根据键板117的模式设定键的位置和后面叙述的连接过程，处理器112选择专用设定数据和公用设定数据之一。专用CS-ID用于检验在接到专用网孔站时接收的证实是否包括相同的ID号码类似地，公用CS-ID用于检验在接到公用网孔站时接收的证实是否包括相同的ID号码。The memory 113 stores in advance dedicated setting data, public setting data, identification codes (IDs), identification codes of private cell sites (dedicated CS-ID) and public cell site identification codes (common CS-ID). The private setting data includes transmission and reception frequency data and other necessary data for private mode operation including connection establishment to the private cell site. The public setting data includes transmission and reception frequency data and other required data for public mode operation. The processor 112 selects one of the dedicated setting data and the common setting data according to the position of the mode setting key of the keypad 117 and the connection process described later. The private CS-ID is used to check that the confirmation received when connected to the private cell site includes the same ID number Similarly, the public CS-ID is used to check that the confirmation received when connected to the public cell site includes the same ID Number.

由处理器112复位和开始该方式开关定时器114并且在预定的最大时间间隔已过去时输出超时信号到处理器112。从模式开关定时器114收到该超时信号，处理器112将电话终端的工作模式从专用模式转换到公用模式，或者从公用模式转换到停止模式，这将在后面详细地叙述。而且，通过控制RF系统10和基带系统11执行主叫/被叫和连接过程。The mode switch timer 114 is reset and started by the processor 112 and outputs a timeout signal to the processor 112 when a predetermined maximum time interval has elapsed. Receiving the timeout signal from the mode switch timer 114, the processor 112 switches the operating mode of the telephone terminal from the dedicated mode to the public mode, or from the public mode to the stop mode, which will be described in detail later. Also, calling/called and connection procedures are performed by controlling the RF system 10 and the baseband system 11 .

参见图2，如图1中所示的移动电话终端201由用户携带，公用网孔站202安装在室外，而专用网孔站203放置在用户屋内。公共网孔站202接到ISDN公用线204和专用网孔站203接到用户线205。在图2中，假定公用网孔站202是在用户房屋附近，而且公用网孔站202的无线电小区E1和专用网孔站203的无线电小区E2有重叠区E3。Referring to FIG. 2, the mobile phone terminal 201 shown in FIG. 1 is carried by the user, the public cell station 202 is installed outdoors, and the private cell station 203 is placed inside the user's house. The public cell site 202 is connected to the ISDN public line 204 and the private cell site 203 is connected to the subscriber line 205 . In FIG. 2, it is assumed that the public cell site 202 is near the user's premises, and that the radio cell E1 of the public cell site 202 and the radio cell E2 of the private cell site 203 have an overlapping area E3.

在这种情况下，当在重叠区E3中时，移动电话终端201可进行到公用网站202和专用网孔站203二者的连接。根据本发明的实施例，较高的优先权给予到专用网孔站203的连接，因为在目前通过用户线205的专用连接业务的收费一般比通过公用线204的公用连接业务的收费低。更具体地讲，在呼叫时，处理器根据存储在存储器113中的专用设定数据执行专用连接过程，即使键盘117的模式设定键设定到公用模式位置。无需说，较高优先权将给予专用和公共连接业务的收费较少的业务。下面将详细叙述移动电话终端的呼叫操作。In this case, the mobile phone terminal 201 can make connections to both the public website 202 and the private cell site 203 while in the overlapping area E3. According to an embodiment of the present invention, higher priority is given to connections to private cell sites 203 because private connection traffic via subscriber line 205 is generally less charged than public connection traffic via public line 204 at present. More specifically, at the time of a call, the processor executes the private connection process according to the private setting data stored in the memory 113, even if the mode setting key of the keyboard 117 is set to the public mode position. It goes without saying that higher priority will be given to less charged traffic for private and public connection traffic. The call operation of the mobile phone terminal will be described in detail below.

参见图3，假定键板117的模式设定键设定在公用模式位置和处理器112在执行公用模式中的断续接收操作(S10)。当用户按下摘机功能键呼叫时(S11)，由处理器112迫使移动电话终端的操作模式进入专用模式(S12)。更具体地讲，当按下摘机键时，处理器112从存储器113中读出专用CS-ID和专用设定数据，并且根据这些数据设定RF系统10和基带系统11。换句话说，该电话终端的操作模式从公用模式转换到专用模式，因此控制信道的频率也转换到预定的频率，以便连接到专用网孔站。Referring to FIG. 3, it is assumed that the mode setting key of the keypad 117 is set at the common mode position and the processor 112 is performing intermittent receiving operation in the common mode (S10). When the user presses the off-hook function key to call (S11), the operation mode of the mobile phone terminal is forced by the processor 112 into a dedicated mode (S12). More specifically, when the off-hook key is pressed, the processor 112 reads out the dedicated CS-ID and the dedicated setting data from the memory 113, and sets the RF system 10 and the baseband system 11 according to these data. In other words, the operation mode of the telephone terminal is switched from the public mode to the private mode, and thus the frequency of the control channel is also switched to a predetermined frequency for connection to the private cell site.

在转换到专用模式之后，在对于预定的最大时间间隔开始模式开关定时器114设定时，处理器112控制基带系统11的信道CODEC107发送呼叫请求到专用网孔站(S13)。在同时，在LCD116上显示由键板117的拨号键输入的目的地号码。此后，处理器112等待从专用网孔站来的证实(S14-S18)。更具体地讲，当收到控制信号时(S14)，处理器112检验包含在接收的控制信号中的源识别号码是否与专用CS-ID相同(S15)。如果不相同，重复执行等待步骤(S14-S18)，直到收到专用CS-ID(S15的“是”)或者模式开关定时器114超过预定的时间间隔(S18的“是”)。After switching to the private mode, the processor 112 controls the channel CODEC 107 of the baseband system 11 to send a call request to the private cell site when the mode switch timer 114 is set for a predetermined maximum time interval (S13). At the same time, the destination number input by the dial keys of the keypad 117 is displayed on the LCD 116 . Thereafter, the processor 112 waits for confirmation from the private cell site (S14-S18). More specifically, when the control signal is received (S14), the processor 112 checks whether the source identification number included in the received control signal is the same as the dedicated CS-ID (S15). If not, repeat the waiting steps (S14-S18) until the dedicated CS-ID is received ("Yes" in S15) or the mode switch timer 114 exceeds a predetermined time interval ("Yes" in S18).

在收到专用CS-ID时(S15的“是”)，处理器112控制基带系统11，以便采取用于连接建立的众所周知的步骤(S16)和通过专用网孔站开始电话通信(S17)。换句话说，在这个实施例中，较高的优先权给予专用模式，因为现在专用连接业务比公用连接业务收费较少。因此，即使模式设定键设定到公用模式位置，移动电话终端在执行公用模式接收操作，呼叫步骤以专用模式开始。Upon receiving the private CS-ID ("Yes" of S15), the processor 112 controls the baseband system 11 to take well-known steps for connection establishment (S16) and start telephone communication through the private cell site (S17). In other words, in this embodiment, a higher priority is given to the private mode, since private connection services are now charged less than public connection services. Therefore, even if the mode setting key is set to the public mode position, the mobile phone terminal is performing the public mode receiving operation, and the calling procedure starts in the private mode.

在另一方面，如果模式开关定时器114超过预定的最大时间间隔(S18的“是”)，电话终端的操作模式从专用模式转换到公用模式(S19)，因此控制信道的频率也转换到预定的频率，以便连接到公用网孔站。On the other hand, if the mode switch timer 114 exceeds the predetermined maximum time interval ("Yes" of S18), the operation mode of the telephone terminal is switched from the private mode to the public mode (S19), so the frequency of the control channel is also switched to the predetermined frequencies to connect to public cell sites.

在转换到公用模式之后，在对预定的最大时间间隔开始模式开关定时器114设定时，处理器112控制基带系统11的信道CODEC107发送呼叫请求到公用网孔站(S20)。此后，处理器112等待来自公用网孔站的证实(S21-S25)。更具体地讲，在收到控制信号时(S21)，处理器112检验包含在所接收的控制信号中的源识别码是否与公用CS-ID相同(S22)。如果不相同，重复执行等待步骤(S21-S25)直到收到公用CS-ID(S22的“是”)或者模式开关定时器114超过预定的最大时间间隔(S25的“是”)。After switching to the public mode, the processor 112 controls the channel CODEC 107 of the baseband system 11 to send a call request to the public cell site when starting the mode switch timer 114 for a predetermined maximum time interval (S20). Thereafter, the processor 112 waits for confirmation from the public cell site (S21-S25). More specifically, upon receiving a control signal (S21), the processor 112 checks whether the source identification code included in the received control signal is the same as the common CS-ID (S22). If not, repeat the waiting steps (S21-S25) until the public CS-ID is received ("Yes" in S22) or the mode switch timer 114 exceeds the predetermined maximum time interval ("Yes" in S25).

在收到公用CS-ID时(S22的“是”)，处理器112控制基带系统11，以便对连接建立采取众所周知的步骤(S23)并通过公用网孔站开始电话通信(S24)。Upon receipt of the public CS-ID ("Yes" at S22), processor 112 controls baseband system 11 to take well-known steps for connection establishment (S23) and start telephone communication through the public cell site (S24).

如果模式开关定时器114超过预定的最大时间间隔(S25的“是”)，则处理器112停止呼叫(S26)并返回到在公用模式中的断续接收操作。If the mode switch timer 114 exceeds the predetermined maximum time interval (YES of S25), the processor 112 stops calling (S26) and returns to the discontinuous reception operation in the common mode.

参见图4，假定键板117的模式设定键设定在专用模式位置而且处理器112在执行专用模式中的断续接收操作(S30)。当用户按下摘机功能键呼叫时(S31)，在对预定的最大时间间隔开始模式开关定时器114设定时，处理器112控制基带系统11的信道CODEC107发送呼叫请求到专用网孔站(S32)。在同时，在LCD116上显示由键板117的拨号键输入目的地号码。此后，处理器112等待来自专用网孔站的证实(S33-37)。更具体地讲，在收到控制信号时(S33)，处理器112检验包含在接收的控制信号中的源识别码是否与专用CS-ID相同(S34)。如果不相同，重复执行等待步骤(S33-34)，直到收到专用CS-ID(S34的“是”)或者模式开关定时器114超过预定的最大时间间隔(S27的“是”)为止。Referring to FIG. 4, it is assumed that the mode setting key of the keypad 117 is set at the dedicated mode position and the processor 112 is performing the intermittent receiving operation in the dedicated mode (S30). When the user presses the off-hook function key to call (S31), when the preset maximum time interval start mode switch timer 114 is set, the channel CODEC107 of the processor 112 controls the baseband system 11 to send the call request to the dedicated cell site ( S32). At the same time, the number of the destination entered by the dial keys of the keypad 117 is displayed on the LCD 116 . Thereafter, the processor 112 waits for confirmation from the private cell site (S33-37). More specifically, upon receiving the control signal (S33), the processor 112 checks whether the source identification code included in the received control signal is the same as the dedicated CS-ID (S34). If not, repeat the waiting steps (S33-34), until the dedicated CS-ID is received ("Yes" in S34) or the mode switch timer 114 exceeds the predetermined maximum time interval ("Yes" in S27).

在收到专用CS-ID时(S34的“是”)，处理器112控制基带系统11，以便采取连接建立的众所周知的步骤(S35)并且通过专用网孔站开始电话通信(S36)。Upon receipt of the private CS-ID ("Yes" of S34), the processor 112 controls the baseband system 11 to take well-known steps of connection establishment (S35) and start telephone communication through the private cell site (S36).

在另一方面，如果模式开关定时器114超过预定的最大时间间隔(S37的“是”)，则处理器112停止呼叫(S38)并且返回到在专用方式中的断续接收操作。On the other hand, if the mode switch timer 114 exceeds the predetermined maximum time interval ("YES" of S37), the processor 112 stops calling (S38) and returns to the discontinuous reception operation in the dedicated mode.

另一情况，在键板117的模式设定键设定在专用模式位置和处理器112在执行专用模式中的断续接收操作的情况下，处理器112可允许模式开关定时器114停止工作。换句话说，可继续执行呼叫过程直到用户按下挂机键停止呼叫过程为止。In another case, when the mode setting key of the keypad 117 is set at the dedicated mode position and the processor 112 is performing the intermittent receiving operation in the dedicated mode, the processor 112 may allow the mode switch timer 114 to stop working. In other words, the call process can be continued until the user presses the hook key to stop the call process.

虽然已经叙述目前所考虑的本发明的优先实施例，但是应该懂得可在其中进行各种改变。例如，本发明可应用于传真机、计算机等的数据传输。本发明包含落入本发明精神和范围内的所有这样的改变。While there have been described what are presently considered to be the preferred embodiments of the invention, it should be understood that various changes could be made therein. For example, the present invention is applicable to data transmission of facsimile machines, computers, and the like. The invention embraces all such modifications as fall within the spirit and scope of the invention.

Claims (6)

1. one kind provides the method that is connected between digital mobile terminal and public mesh station and one of special-purpose mesh station, described public mesh station is positioned over outdoor, and it receives common communication line, and described special-purpose mesh station is positioned over indoor, it receives subscribers feeder, and described method comprises step:
(a) operator scheme of the described digital mobile terminal of detection, described operator scheme is one of utility mode and dedicated mode, described utility mode makes described digital mobile terminal work so that be connected to described public mesh station, and described dedicated mode makes described digital mobile terminal work so that be connected to described special-purpose mesh station;
(b) call request of detection in described operator scheme is because user's operation produces described call request;
(c) when in described utility mode, detecting described call request, change described digital mobile terminal to described dedicated mode;
(d) connect to first of described special-purpose mesh station according to described dedicated mode request;
(e) when to described first connection failure at described special-purpose mesh station, change described digital mobile terminal to described utility mode; With
(f) connect to second of described public mesh station according to described utility mode request.
2. according to the process of claim 1 wherein:
Described step (d) comprising: when resetting the timer of predetermined timer value, according to described first step of connecting of described dedicated mode request to described special-purpose mesh station; With
Described step (e) comprises step:
Wait is from the control signal at described special-purpose mesh station; With
Arrive described predetermined timer value and not when described control signal is received at described special-purpose mesh station, change described digital mobile terminal at described timer to described utility mode.
3. according to the method for claim 1, further comprise a step:
(g) to described second connection failure at described public mesh station the time, stop call.
4. according to the method for claim 3, wherein:
Described step (f) comprising: when resetting the timer of predetermined timer value, according to described second step of connecting of described utility mode request to described public mesh station; With
Described step (g) comprises a step:
Wait is from the control signal at described public mesh station; And
When reaching described predetermined timer value and do not receive described control signal from described public mesh station, described timer stops call.
5. one kind provides the method that is connected between digital mobile terminal and public network nose end and one of special-purpose mesh station, common communication line is received at described public mesh station, the private communication line is received at described special-purpose mesh station, and it connects operating cost and lacks than described common communication line, and described method comprises step:
(a) operator scheme of the described digital mobile terminal of detection, described operator scheme is one of first operator scheme and second operator scheme, described first operator scheme makes described digital mobile terminal work so that receive described public mesh station, and described second operator scheme makes described digital mobile terminal work so that be connected to special-purpose mesh station;
(b) call request of detection in described operator scheme produces described call request because the user operates;
(c) when in described first operator scheme, detecting described call request, change described digital mobile terminal to described second operator scheme;
(d) connect to first of described special-purpose mesh station according to the described second operator scheme request
(e) to described first connection failure at described special-purpose mesh station the time, change described digital mobile terminal to described first operator scheme; With
(f) connect to second of described public mesh station according to the described first operator scheme request.
6. one kind provides the method that is connected between digital mobile terminal and public mesh station and one of special-purpose mesh station, and described public mesh station is connected to common communication line, and described special-purpose mesh station is connected to the private communication line, and described method comprises step:
(a) operator scheme of the described digital mobile terminal of detection, described operator scheme is one of common operation pattern and dedicated operation mode, described common operation pattern makes described digital mobile terminal work so that receive described public mesh station, described dedicated operation mode makes described digital mobile terminal work so that receive described special-purpose mesh station, and wherein higher priority gives described dedicated operation mode;
(b) call request of detection in described operator scheme produces described call request because the user operates;
When (c) in described digital mobile terminal is in the state of described dedicated operation mode, detecting described call request, change described digital mobile terminal to described common operation pattern;
(d) connect according to the special use of described dedicated operation mode request, so that between described digital mobile terminal and described special-purpose mesh station, set up described special-purpose the connection to described special-purpose mesh station;
(e) to the described special-purpose connection failure at described special-purpose mesh station the time, change described digital mobile terminal to described common operation pattern; With
(f) according to of the public connection of described common operation mode request, so that between described digital mobile terminal and described public mesh station, set up described public connection to described public mesh station.
CN95113186A 1994-12-28 1995-12-28 Digital mobile terminal automatically switching between public and private modes Expired - Fee Related CN1071981C (en)

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JPH08186876A (en) 1996-07-16

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