FR2788924A1 - LOCAL RADIOTELEPHONY NETWORK, CELLULAR TELEPHONE CHARGER, RADIO BASED RADIO HANDSET FOR THE NETWORK - Google Patents

Abstract

Local radiotelephony network comprising a radio base (1) and at least one radio handset (2) connected to the base (1), data link means (3, 4, 25, 27, 22) for connecting the assembly the base (1) and the radio handset (2) and a telephone (20) of a cellular telephone network (40). The charger (23) comprises first data link means to the cellular telephone (20) and second data link means to the base (1), connected to each other.

Description

LOCAL RADIOTELEPHONY NETWORK, CHARGER OF

  CELLULAR TELEPHONE, RADIO HANDSET AND RADIO BASE

FOR THE NETWORK

  The invention relates to a local radiotelephone network comprising a radio base and at least one radio handset connected to the base. The base is connected to a wired telephone network, such as the PSTN network, and communicates with the handset (s) by radio, using communication protocols

  o10 such as that of the DECT standard.

  Such a local radiotelephone network allows its users to make calls while moving around the base. However, since the base must be connected by wired link to the telephone network, the local network can only be used in places equipped with telephone sockets for wired connection to the telephone network. Thus, the user having a local radiotelephony network in his main residence will not be able to carry and use this network in a residence

  vacation, for example, without a telephone jack.

  The present invention aims to overcome this drawback.

  To this end, the invention relates to a local radiotelephone network comprising a radio base and at least one radio handset, connected to the base, characterized in that it comprises data link means for connecting the whole of the base and radio handset and a telephone of a

cellular telephone network.

  From the outset, it will be noted that by cellular network is meant a cellular network in the broad sense of the term, that is to say both a network of

  cellular base stations than a network of terrestrial satellites.

  Thanks to the invention, the user of the local network can use it anywhere, or at least in the entire coverage area of the cellular network, by telephoning through this network, using the base and from the handset and through the cell phone. In short, the local network is movable

  and usable throughout the coverage area of the cellular network.

  In a particular embodiment, said connecting means are

  arranged to connect the cellular telephone directly to the base.

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  In another embodiment, said link means comprise an interface radio handset module, paired with the base by radio link, by means of which the cellular telephone is intended to be connected to the base. Thanks to this, in the case where the base is connected to a telephone network other than the cellular network, for example the PSTN network, and allows not only external communications through the other telephone network but also internal communications between the at least two handsets, a first handset A can communicate through the cellular network, via the base and the interface radio handset module in internal communication with handset A, and, simultaneously, a second handset B can communicate with a

  correspondent outside the local network, through the PSTN network.

  Advantageously, means are provided for transforming commands from the radio handset into commands for controlling a

cell phone.

  Preferably, the base and the radio handsets being arranged to communicate according to a given communication protocol, the whole of the base and the radio handset comprises means for encapsulating the commands for controlling a cellular telephone in said communication protocol, and the interface radio handset module includes

  means for decapsulating said commands.

  The invention also relates to a battery charger for a cell phone, for the local radiotelephony network defined above, comprising first means of data link to the cell phone and second means of data link to the entire base. radio and radio handset, the first connection means being connected

to the second connecting means.

  The invention also relates to a radio handset for the above local radio network, comprising user interface means for entering commands and means for generating commands for controlling a telephone of a cellular network, from commands.

  entered using the user interface means.

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  The invention finally relates to a radio base for the local radiotelephony network defined above, arranged to pair with at least one radio handset, comprising means for transforming commands from a radio handset into commands for controlling a cell phone.

  The invention will be better understood using the following description of two

  particular embodiments of the local radiotelephone network of the invention, with reference to the appended drawing in which: - Figure 1 represents a diagram of the network, according to one of the embodiments, and - Figure 2 represents a diagram of the network, according to the other form of

1 5 achievement.

  The local radiotelephony network represented in FIG. 1 comprises a radio base 1 and a plurality of radio telephone handsets 2, here six in number, connected to base 1 by radio link and intended to communicate with it using a communication protocol of

  wireless telephony, in this case the DECT protocol.

  Base 1 includes a wired connection line interface to a network

  telephone line 10, in this case the PSTN switched telephone network.

  Via base 1, handsets 2 can communicate through the PSTN 10 telephone network (external communication) and between

them (internal communication).

  The base 1 comprises, in addition to the standard elements of a DECT base, a connector 3 for data link to a battery charger 23 of a telephone 20 of a cellular network 40, here GSM, and an interface block 4 of

  communication between the local network and the cell phone 20.

  The handsets 2 comprise a telephone dialing keyboard comprising, in addition to the ordinary elements of a telephone keyboard, a

  GSM call key for calling through the GSM 40 network.

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  For the sake of clarity, only the elements of the GSM telephone 20 and its charger 23, necessary for understanding the invention, will

now be described.

  The cellular telephone 20 is intended to communicate through the GSM network 40, using the GSM communication protocol. It includes a battery, not shown, charging contact pads 21 and a service socket 22, here male, for external connection and for data transmission. The battery charger 23 comprises a housing 24 for receiving the telephone 20, charging contact pads 26, intended to be connected to those 21 of the telephone 20, a female socket 27 for connection to the male service socket 22 of the telephone 20 and of data transmission, as well as a connector 25 for data link with the base 1. The connector 25, for connection to the base 1, and the socket 27, for connection to the

  telephone 20, are connected to each other.

  The base 1 is connected to the charger 23, by means of the connectors 3 and 25 connected to each other by a wired link 28. When it is placed in its charger 23, the telephone 20 is thus directly connected to the base I by a link, comprising the wired link 28 and the link between the connector 25 and the socket 27, intended to transmit data between the telephone 20 and the base 1, in particular voice data, transmitted during a communication between one of the handsets 2 and a correspondent, and

  commands, as will be explained below.

  The interface block 4 acts as a communication interface between, on the one hand, the base 1 and its radio handsets 2 and, on the other side, the GSM telephone 20. It is intended to transform DECT commands, coming from a radio handset 2, in commands, or instructions, for controlling the GSM telephone 20, in this case AT HAYES commands (standard ETSI GSM 07.07), which will be called "AT commands" thereafter. "DECT command" means a command defined by the DECT communication protocol. These orders include, in particular, telephone call, hang up and hang up orders. Furthermore, in the event of reception of a telephone call, the GSM telephone 20 transmits to base 1, through the service outlet 22, an indication of incoming call. When it receives this indication, the block

  Interface 4 is intended to ring the DECT 2 radio handsets.

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  After the structural description of the local radiotelephone network, its

  operation during a communication between one of the handsets 2 and an external correspondent to the local network 2, through the GSM network 40, will now be described. In order to recharge the GSM telephone 20, a user places it in the charger 23, thereby connecting, on the one hand, the charging contact pads 21 and 26 to one another and, on the other hand, and the male sockets 22 and io female 27 between them. The DECT 1 base is then connected to the GSM 40 network

  via telephone 20.

  In the event of an incoming call on the GSM telephone 20, the latter transmits an indication of an incoming call to the DECT base 1, through the socket 22. Under the control of the interface block 4, the base 1 then rings DECT radio handsets 2. When one of them picks up, it transmits to DECT 1 a DECT off-hook command. The base 1 transforms the DECT off-hook command into an AT off-hook command and transmits it to the telephone, through the link between the connector 3 and the socket 27. After reception of these data, the telephone 20 answers, so that '' a telephone call is established between the calling party and the handset 2 having

  off the hook, through the GSM 40 network.

  In order to call a correspondent using one of the handsets 2, through the GSM 40 network, the user dials the correspondent's telephone number, using the keypad on handset 2, and presses on the GSM call key. The handset 2 then sends a DECT command to the GSM telephone call and the correspondent's telephone number to the base. The interface block 4 transforms the DECT command received into an AT telephone call command. Base 1 issues this AT command to telephone 20, with the telephone call number

  of the correspondent, through the connection between connector 3 and socket 27.

  After reception of these data, the telephone 20 calls the correspondent, in order to establish a voice communication between the handset considered 2 and the

  correspondent called through the GSM 40 network.

  During a telephone communication between the handset 2 and a correspondent through the GSM network 40, the data, in particular voice, transmitted between the correspondent and the handset 2, pass via the

base 1 and telephone 20.

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  Another embodiment of the local network does not differ from the description

  which precedes only by what will now be described. For the sake of clarity, the elements of this second embodiment, corresponding to elements of the first embodiment described above, bear the

  same references as these, but incremented by one hundred.

  The local radiotelephone network comprises the radio base 101, a plurality of radio telephone handsets 102, here five in number, and a battery charger 123 of a cellular telephone 120. The radio handsets 102 are arranged to pair with base 101, by radio link, and for

  communicate with it according to the DECT communication protocol.

  The base 101, in addition to the conventional elements of a DECT base, includes an i5 block 104 for communication interface between, on one side, the base 101 and its radio handsets 102 and, on the other side, the cell phone 120. The interface block 104 is intended to transform DECT commands, originating from a radio handset 102, into AT commands for controlling the GSM telephone 120, then to encapsulate these AT commands in the protocol of

  DECT communication, as explained below.

  The charger 123 comprises, in a conventional manner, a housing 124 for receiving the telephone 120 and contact pads 126 for charging the battery of the telephone 120. It also comprises a female socket 127, for data transmission and connection to the male socket 122 of the telephone 120, as well as a module 125 for an interface radio telephone handset, by means of which the telephone 120 is intended to be connected to the base 101. The connection socket 127 is connected to the module 125

radio interface handset.

  The interface radio handset module 125 is a DECT radio handset, devoid of a man-machine interface, arranged to pair with base 101, by radio link 128, and to communicate with it according to the DECT communication protocol. It acts as a link interface between the base 101 and the telephone 120 and includes a communication interface block between the base 101 and the telephone 120, not shown. This interface block is intended to decapsulate AT commands, encapsulated in the DECT protocol, transmitted by the base 101, before retransmitting them to the telephone 120, and to transmit to the base 101 a call command.

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  internal telephone, if an incoming call indication is received

  provided by cell phone 120, as explained below.

  When the telephone 120 is in its charger 123, the base 101 is connected to the telephone 120, by means of the interface radio handset module 125. A radio handset 102 can then communicate with a correspondent, via the GSM network 140, by means of an internal communication between the interface radio handset module 125 and the handset considered 102. The link between the base 101 and the 120 io telephone is intended to transmit data, in particular voice data

and control.

  It should be emphasized here that when one of the handsets 102 is in communication with a correspondent external to the local network, through the GSM i 140 network, by means of internal communication with the interface handset module 125, another handsets 102 can simultaneously communicate with another external correspondent on the local network, through

  the wired telephone network 110.

  After the structural description of the local radiotelephone network, its

  operation when one of the handsets 102 communicates with an external correspondent on the local network, via the GSM 140 network, will

now be described.

  In order to recharge the GSM 120 telephone, its user places it in the charger, thereby connecting, on the one hand, the charging contact pads 121, 126 to one another, and, on the other hand, the male 122 and female 127 sockets. between them. In the event of an incoming call on the cellular telephone 120, the latter transmits an incoming call indication to the DECT handset module 125, through the socket 122. The DECT handset module 125 then transmits to the base 101, by radio, an internal call command from the handsets 2. After reception of the command, the base 101 rings the handsets 102. When one of them picks up, it transmits to the base 101 a DECT command to answer the telephone. After reception of this command, the base 101 establishes an internal communication between the handset 102 having picked up and the DECT handset module 125, generates a telephone hook command and transmits it to the DECT handset module 125, by encapsulating it in a specific field of the DECT protocol, in this case the IWU field of a

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  DECT protocol INFO frame. The DECT 125 handset module receives this INFO frame, extracts the telephone hook command, in other words decapsulates it, then retransmits it to the telephone 120, via the socket 127. After receiving this data, the telephone 120 picks up so that a telephone call is established between the handset 102 considered and the calling party, through the GSM network 140, by means of an internal communication on the local network between the

  handset considered 102 and the DECT handset module 125.

  io In order to call a correspondent using one of the handsets 102, through the GSM 140 network, the user dials the correspondent's telephone call number, using the keypad on the handset 102, and press the GSM call key. The handset 102 transmits to the base 101 an internal call command from the DECT handset module 125 and the correspondent's telephone call number. After receiving this data, the base 101 generates a telephone call AT command and transmits it to the DECT handset module 125, with the correspondent's telephone call number, by encapsulating this data in the IWU field of a DECT protocol INFO frame. The DECT handset module 125 receives this frame, extracts the telephone call AT command and the correspondent's telephone call number, in other words decapsulates this data, then retransmits it to telephone 120. The latter then calls the correspondent , in order to establish a telephone communication between the

  handset 102 considered and the correspondent, through the GSM network 140.

  During a communication between one of the handsets 102 and an external correspondent on the local network, through the GSM network 140, the handset 102 considered and the DECT handset module 125 communicate with each other, in internal communication , via the base 101. The data, in particular the voice data, transmitted between the handset 102 and the external correspondent, pass via the base 1, the handset module

and the telephone 120.

  During a communication between a first handset 102 and a first external correspondent, through the GSM network 140, a second handset 102 can simultaneously make or receive a telephone call and communicate through the wired telephone network I 10 with a second external correspondent to the local network, via the base 101. The base 101 in this case simultaneously manages the internal communication between the first handset 102 and the handset module 125, allowing the

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  external communication of the first handset 102 with the first external correspondent, through the GSM network 140, as well as the external communication of the second handset 102 with the second

  external correspondent, through the wired telephone network 1 10.

  It could be envisaged to remove the connection and data transmission socket from the cell phone battery charger and to pass the voice and command data through the pads.

charging contact.

  The radio handsets could integrate a communication interface block, arranged to generate commands, for example AT commands, to control the cell phone, from commands entered at

  using their telephone keypad.

  We could also integrate a communication interface block in

the mobile phone.

  In an alternative embodiment, the local network further comprises the

items described below.

  The charger comprises a block for detecting the presence of the cell phone and a block for acquiring identification data from the cell phone, in this case an identification number. The detection block makes it possible to detect the presence of the cell phone in the charger, here by detecting a charging current. The acquisition block is intended to acquire the identification number of the telephone, when the latter is in

  charger, and retransmit it to the base.

  The DECT radio base includes an identification block and a telephone call routing block. The identification block is intended to verify the validity of the identification number of the cell phone, provided by the charger's acquisition block, by comparison with a valid, pre-recorded identification number. The telephone call routing block is intended, under the control of the identification block, to control the base so that it calls a telephone call routing server and sends it a routing request for the purpose of route all incoming calls to the local network through the cellular network here.

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  It will be noted here that the local network, comprising the base and its radio handsets, and the cellular telephone, respectively have a telephone call number on the PSTN network and a telephone call number on the GSM network. The referral server, connected to the two PSTN and GSM networks, is intended to direct telephone calls through one or more

  the other of these networks, to either of the telephone numbers.

  When a user places the cell phone in the charger, the detection block detects the presence of the phone. The acquisition unit then acquires the identification number of the telephone, stored therein, and transmits it to the base. In the database, after receiving the identification number, the identification block checks whether the received identification number is valid. If this is the case, under the control of the routing block, the base calls the routing server, through the PSTN network, and sends it a routing request to route the incoming calls, intended for the local network, through the GSM network, in other words to route incoming calls, intended for the telephone number of the local network on the PSTN network, to the telephone number of the cellular telephone on the GSM network. Thus, in the event of an incoming call on the network

  local, the referral server directs the call to the cell phone.

  When the user removes the phone from their charger, the detection unit detects the absence of the phone and reports it to the base. This then calls the referral server, through the PSTN network, and addresses it

  a request to stop the routing of incoming calls.

  You could only route some of the incoming calls to the local network to the cell phone, for example only calls from cell phones. We could also, conversely, route at least some of the incoming calls, intended for the telephone.

  cellular, through the PSTN network.

  Instead of calling the switch server through the PSTN network, it could be called through the GSM network, as long as the cell phone is in its charger and thus links the local network to the cellular network. The radio base could also include a routing block intended to direct outgoing calls, sent by a handset from the local network, to one of the two networks, PSTN 100 and cellular 140, according to predefined criteria (cost of communication, cellular network occupancy, etc.),

  when cell phone 120 is in its charger 123.

  In another variant, the local network further comprises the following elements. The charger integrates an interpreter arranged to, in combination with the keyboard of a DECT radio handset paired with the DECT base, simulate the actuation of a cell phone keyboard. The interpreter is arranged to transform a command generated by actuation of a key on the keyboard of the DECT handset into a command simulating the actuation of a key on the keyboard of the cellular telephone. It allows

  thus deport the cell phone keypad to the DECT handset.

  The DECT radio handsets each have an internal call button allowing them to call another DECT radio handset on the local network, each DECT handset having an internal telephone call number. An internal telephone number is also assigned to the DECT radio handset module

  interface, integrated in the charger.

  When a user enters the internal call number of the interface handset module, using the keypad of a radio handset, and presses the internal call key, the relevant handset and the handset module d 'interface establishes an internal communication between them, through the base. From then on, thanks to the interpreter, the user can use the keypad of the radio handset to control the cell phone. The interpreter receives commands, generated by actuation of a key on the keyboard of the radio handset, and transforms them into commands simulating actuation

  cell phone keypad keys.

  The user can thus access the various functions of the cell phone, such as consulting a directory of correspondents or a voicemail box, modifying the directory of correspondents, sending and receiving messages SMS,

etc.

  Instead of being integrated into the loader, the interpreter could be integrated

  in the base or in the radio handset.

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  Instead of AT commands, one could use any other type of command of this type. Finally, instead of an interface radio handset module, an interface radio handset could be provided, not integrated in the charger, and which can be connected by radio or wire connection to the cell phone.

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Claims (11)

  1- Local radiotelephony network comprising a radio base (1; 101) and at least one radio handset (2; 102), connected to the base (1; 101), characterized in that it comprises means (3, 25, 28, 27; 125, 127) data link to connect the entire base (1) and the radio handset (2; 102)   and a telephone (20; 120) of a cellular telephone network (40; 140).   io 2- Network according to claim 1, wherein said link means (3, 25, 28, 27) are arranged to connect the cell phone (20) directly at the base (1).   3- The network of claim 1, wherein said connecting means comprises an interface radio handset module (125), paired with the base (101) by radio link (128), through which the telephone   cell (120) is intended to be connected to the base (101).   4- Network according to one of claims 1 to 3, in which there are provided   means (4; 104) arranged to transform commands from the radio handset (2; 102) into commands for controlling a cellular telephone (20;). Network according to claim 4, in which, the base (101) and the radio handsets (102) being arranged to communicate according to a given communication protocol, the whole of the base (101) and of the radio handset (102) comprises means (104) for encapsulating the commands for controlling a cellular telephone in said communication protocol, and the radio interface handset module (125)   includes means for decapsulating said commands.   6- Network according to one of claims 1 to 5, in which the radio base   comprising means for connecting to another telephone network, there are means of routing arranged to call a routing server and send it a routing request for incoming calls, to route at least some of the incoming calls to through one of the two networks of the base and cell phone. 14 2788924   7- The network of claim 6, wherein the base comprises means for identifying the cell phone, arranged to control the referral means.   8- Network according to one of claims 1 to 7, wherein there is provided a   interpreter arranged for, in combination with a handset keyboard   radio, simulate the operation of a cell phone keypad.   9- Battery charger for cellular telephone (20; 120), for the local radio network of claim 1, comprising first means (27; 127) of data link to the cellular telephone (20; 120) and second means (25; 125) of data link to the entire radio base (1; 101) and of the radio handset (2; 102), the first link means   (27; 127) being connected to the second connecting means (25; 125).   - Charger according to claim 9, in which the second connection means comprise an interface radio handset module (125), arranged   to pair with the base (101) by radio link (128).   i 1- Radio handset for the local radiotelephony network above, comprising user interface means for entering commands and means for generating commands for controlling a telephone of a cellular network, from commands entered on the aid means user interface.   12- Handset according to claim 12, in which, the handset (102) being arranged to communicate with the base (101) according to a given communication protocol, means (104) are provided for encapsulating the commands for controlling a cell phone (120) in said protocol.   13- Radio base for the local radiotelephony network of claim 1, arranged to pair with at least one radio handset (2; 102), comprising means (4; 104) for transforming commands from a radio handset into commands for controlling a cell phone (20;). 14. The radio base according to claim 13, in which, the base (101) and the handset (102) being arranged to communicate according to a given communication protocol, means (104) are provided for encapsulating the   commands for a cellular telephone (120) in said protocol.   - Radio base for the local radiotelephony network of claim 1, comprising means (3) for connecting data to a telephone (20) a cellular network (40).   16- radio base according to claim 15, wherein there is provided wired connection means (3, 28) to a charger (23) of the telephone battery o cell (20).   17- Radio base according to one of claims 13 to 16, in which   means of connection to a telephone network being provided there, switching means are provided intended for automatically routing outgoing telephone calls to one of the two respective networks of the base and of the   cell phone, according to predefined criteria.