WO2006021128A1

WO2006021128A1 - Method for transfering the call of bluetooth handset which use the dynamic extension number

Info

Publication number: WO2006021128A1
Application number: PCT/CN2004/000982
Authority: WO
Inventors: Hong Lin; Zhijian Zhou
Original assignee: Ivt Software Technology Inc.; Ivt Corporation
Priority date: 2004-08-24
Filing date: 2004-08-24
Publication date: 2006-03-02

Abstract

The present invention disclosed a kind of method for transferring the call in Bluetooth handset which use the dynamic extension number. Said method include, make the partnership between the Bluetooth handset and gateway, the gateway assign the sub-number to the Bluetooth handset and inform the fixed number to the Bluetooth handset, the Bluetooth handset also transform the number of the mobile net to the gateway; after making the partnership, when Bluetooth handset join the piconet which including the gateway, the Bluetooth handset use the fixed number registering transfer of the call, and gateway registers the Bluetooth handset and relation extension number to the fixed telephone network; When the calling of the Bluetooth handset reached the fixed telephone network, the fixed telephone network search the relation extension number and inform the extension number to the gateway, the gateway will use the extension number to inform the relation Bluetooth handset ringing ; When the Bluetooth handset leaves the piconet which include the gateway, perform login out process. Thus, even there are many Bluetooth handset, the gateway can correctly call the related one.

Description

Method for realizing call forwarding of bluetooth mobile phone by using dynamic extension number

The present invention relates to the field of mobile telephone and Bluetooth communication technologies in wireless communication, and in particular to a method of call processing. Background technique

With the rapid increase in the number of users of cellular phones (including GSM phones, CDMA phones, PHS phones, 3G phones, etc.) (currently the number of users of cellular phones in China has exceeded 140 million), the demand for network services by cellular phone users is increasing. The higher. Although the mobile phone network covers almost the entire earth, the signal can reach special areas such as subways and elevators. However, the signal of the mobile phone network has some degree of instability. Interference and attenuation of cellular telephone signals are inevitable between high-rise buildings and indoors.

At the same time, the fixed telephone network has also been extended to every household. The biggest advantages of fixed telephones over mobile phones are: stable and reliable signals, and low communication costs.

At present, cellular phones and fixed telephones often do not work well together. When the user goes out, the cellular phone must be used to keep in touch, but when the user goes home or works in the office, he or she wants to switch to the fixed phone to save communication costs and at the same time have higher call quality.

In the prior art, there is a short-range wireless communication technology called Bluetooth, which operates in the 2. 4 GHz ISM (Industrial-Science-Medical) band. The basic network structure of Bluetooth is a piconet consisting of one master device and up to seven slave devices. The master device and the slave device communicate in a time division multiple access (TDMA) manner. With Bluetooth technology, devices can be connected in a cost-effective manner. The Special Interes t Group (SIG) is a civil society organization that develops and directs Bluetooth specifications and applications. In its definition of Cordless Phone Profie, it proposes a Bluetooth technology. A cordless telephone, that is, a cordless telephone base station (hereinafter referred to as a gateway) as a master device and a cordless telephone handset (hereinafter referred to as a terminal) as a slave device are equipped with a Bluetooth wireless transceiver module for voice and control using Bluetooth Transmission of signaling. Cordless telephones are connected to a fixed network, and one gateway can connect up to seven terminals. Unlike a normal cordless telephone, the cordless telephone handset (terminal) can also be a cellular telephone (hereinafter referred to as a cellular cord with a Bluetooth cordless telephone handset function). The words are Bluetooth phones). The above solution largely solves the problem of the use of fixed telephones and cellular phones, and has a good application prospect.

However, the SIG's solution is not perfect. The solution does not solve the problem of how Bluetooth phones can seamlessly switch between mobile networks and fixed-telephone networks. That is, when there is a call for a mobile phone number of a Bluetooth mobile phone, it must also be answered through the mobile phone network, and the user still has to endure the signal interference and attenuation that may exist in the cellular phone, and cannot reduce the communication cost of the call. One remedy is to transfer incoming calls to the gateway when the Bluetooth handset is within range of the gateway. In this way, when the Bluetooth mobile phone and gateway have the call forwarding function, the incoming call will be delivered over the fixed telephone line instead of the mobile network.

However, when there are multiple Bluetooth mobile phones registered to the gateway at the same time, when the external power calls one of the Bluetooth mobile phones, if the Bluetooth gateway does not know which Bluetooth mobile phone to call, all Bluetooth mobile phones will ring at the same time, which brings a lot of inconvenience to the user. . Summary of the invention

Therefore, the problem to be solved by the present invention is: how to be in multiple Bluetooth when an incoming call to a Bluetooth mobile phone is transferred to a gateway and transmitted through a fixed telephone network when a plurality of Bluetooth mobile phones are within the scope of the gateway The called Bluetooth phone is recognized in the mobile phone.

In order to solve the above technical problems, the present invention provides a method for realizing Bluetooth mobile phone incoming call transfer under the above circumstances. The main purpose of the confusion is achieved by adding the functions of the gateway, the Bluetooth mobile phone and the intelligent network on the network side. The method includes the steps of:

( a ) Pairing between the Bluetooth handset and the gateway. In the pairing, the gateway dynamically assigns an extension number to the added Bluetooth mobile phone and notifies the Bluetooth mobile phone of the fixed telephone number connected by the gateway, and the Bluetooth mobile phone also notifies the gateway of its mobile network number;

(b) The Bluetooth mobile phone joins the piconet where the gateway is located. The Bluetooth mobile phone registers the fixed telephone number connected to the gateway as a call forwarding number through the mobile network, and the gateway registers the mobile network number of the Bluetooth mobile phone to the fixed telephone network;

( c ) The Bluetooth mobile phone dials the outside line through the gateway. The gateway automatically adds the extension number corresponding to the Bluetooth mobile phone before the calling number, so that the intelligent network can display the number of the Bluetooth mobile phone in the other party's caller;

(d) When the fixed telephone calls the mobile network number of the Bluetooth mobile phone, the fixed telephone network knows that the Bluetooth mobile phone has joined the gateway according to the information registered by the gateway, the fixed telephone network calls the gateway, the incoming call number joins the extension number, and the gateway can notify the corresponding number according to the extension number. Bluetooth mobile phone ringing; ( e ) When another mobile phone calls a Bluetooth mobile phone, the mobile network transfers the incoming call to the gateway and the gateway rings. Whether the Bluetooth phone rings can be set. The gateway extracts the calling number and transmits it to the Bluetooth mobile phone;

( f ) When the Bluetooth mobile phone or the gateway detects that the Bluetooth mobile phone leaves the piconet where the gateway is located, the Bluetooth mobile phone cancels the call transfer through the mobile network, and the gateway cancels the registration information of the Bluetooth mobile phone through the fixed telephone network.

The order in which the steps are performed is generally: ( a ) ( b ) ( c ) ( d ) ( e ) ( f ).

When the Bluetooth mobile phone, the gateway, and the intelligent network on the network side adopt the call forwarding method of the present invention, in the case where there are multiple Bluetooth mobile phones, the gateway can still correctly call the corresponding Bluetooth mobile phone, thereby avoiding multiple Bluetooth mobile phones simultaneously. Ringing problem. Moreover, when the Bluetooth mobile phone is called out through the gateway, its mobile network number can be displayed to the other party through the caller ID function. When calling a Bluetooth mobile phone from a fixed telephone, the gateway can correctly transfer the call to the corresponding Bluetooth mobile phone and the answer is free. When a Bluetooth mobile phone is called from a mobile phone, the fee is also reduced by the cellular phone's answering fee to the cellular phone's incoming call forwarding fee. DRAWINGS

The objects and advantages of the invention will be apparent from the description of the preferred embodiments of the invention. When the Bluetooth mobile phone is used as the terminal of the Bluetooth gateway, it has the function of a Bluetooth cordless telephone. among them:

Figure 1 is a system block diagram of a Bluetooth cordless telephone device (gateway or terminal);

Figure 2 is a diagram explaining the network configuration of a Bluetooth cordless telephone device;

3 is a flow chart for explaining a method for correlating actions when a Bluetooth handset and a gateway are paired according to the present invention;

4 is a flow chart for explaining a method for related actions when a Bluetooth mobile phone joins a piconet where a gateway is located, according to the present invention;

Figure 5 is a flow chart illustrating a method for related actions when a Bluetooth handset leaves the piconet where the gateway is located, in accordance with the present invention. detailed description

Figure 1 is a system block diagram of a Bluetooth cordless telephone device (gateway or terminal). In Figure 1, the Bluetooth cordless telephone device 100 is comprised of several functional modules. Among them, the Bluetooth cordless telephone application 110 provides various functions of the cordless telephone to the user, and the required voice is provided by the baseband controller 150. The required control information is provided by SDP (Service Discovery Protocol) 170 and TCS (Telephone Control Protocol) 120. The standard communication protocol L2CAP (Logical Link Control and Adaptation Protocol) 130 multiplexes various protocols of the upper layer. The HCI (Host Control Interface) driver 175 allows the transmission of standard HCI commands and receives the resulting response; and receives and transmits data through the L2CAP 130.

The HCI transport layer 180 is optional. When the upper functional module and the lower functional module of the HCI transport layer are run on different processor platforms, the HCI transport layer is responsible for information transfer between the modules, and the physical transmission mode may be RS232. USB, UART, PCI or PCMCIA; When the above two types of modules run on the same processor platform, the information transfer uses shared memory, parameter transfer, message, etc., and the transport layer is no longer needed.

The link manager 180 is responsible for receiving commands and data sent by the upper module and returning the result to the upper layer. The link manager 180 performs the corresponding functions through the baseband controller 150 and the radio transceiver 160. Link Management Protocol 140 is used to communicate with each other between different Bluetooth device link managers. The baseband controller 150 operates in accordance with the commands of the link manager 180. The wireless transceiver 160 wirelessly transmits and receives information in accordance with standard specifications.

Figure 2 illustrates the network configuration of a Bluetooth cordless telephone device. The gateway 250 is connected to the external fixed network 270 via an outside line. As the master device of the piconet, the gateway 250 can accept requests from the seven terminals to join the network at the same time. After the terminal joins the network, it becomes a slave device of the network. In the figure, there are five terminals A 210 , B 220 , C 230 , D 240 , and E 260 . In general, the success of the wireless communication is determined by the power of the transmitted wave or the sensitivity of the received wave. In the Bluetooth wireless communication domain, the standard Class 2 Bluetooth communication module has a radio coverage of 10 m.

3 is a flow chart illustrating a method for related actions when pairing between a Bluetooth handset and a gateway in accordance with the present invention. In the process of pairing the Bluetooth mobile phone with the gateway, the Bluetooth mobile phone needs to input the password required by the gateway (S310. After the pairing is successful, the Bluetooth mobile phone and the gateway both save the shared key for use in establishing a connection in the future. And the gateway is successfully paired Bluetooth. The mobile phone dynamically assigns an extension number (S320), and the extension number can be assigned by the gateway according to a certain algorithm (for example, according to random allocation or sequential allocation), and the general extension number of two decimal codes is sufficient. The gateway notifies the fixed telephone number to which the connection is connected. Bluetooth mobile phone (S330), the Bluetooth mobile phone uses the fixed telephone number as the call forwarding number. This can be achieved by: When the TCS call is established between the gateway and the Bluetooth mobile phone, the gateway passes the TCS message "INFO SUGGEST" The company custom field "Company Specif ic", the fixed phone number is passed to the Bluetooth phone. The Bluetooth phone also notifies the gateway (S340) of its mobile network number. The gateway needs to put the Bluetooth hand The 000982 machine's mobile network number, assigned extension number, baseband address (used to establish a physical connection between the gateway and the Bluetooth handset), and the pairing key are stored.

4 is a flow chart for explaining a method for related actions when a Bluetooth mobile phone joins a piconet where the gateway is located, in accordance with the present invention.

A Bluetooth mobile phone can actively or passively join the piconet where the gateway is located. Bluetooth phones can use a periodic search or manually initiate a search to find a gateway that has to be paired successfully. The gateway can also periodically search for nearby Bluetooth phones that have been successfully paired. After the Bluetooth mobile phone successfully joins the piconet where the gateway is located (S410), the gateway needs to modify the configuration of the network broadcast channel held by the gateway, and add the Bluetooth mobile phone to the Bluetooth mobile phone list (S420). At the same time, the Bluetooth mobile phone registers the fixed telephone number connected by the gateway as a call forwarding number (S430) through the mobile network, and the gateway transmits the Bluetooth mobile phone by, for example, automatically dialing: "service access code + extension number + Bluetooth mobile phone network number" The mobile network number and the assigned extension number are registered in the fixed telephone network (S440).

When calling the mobile phone number of the Bluetooth mobile phone from the fixed telephone, the fixed telephone network knows that the Bluetooth mobile phone has joined the piconet where the gateway is located according to the information registered by the gateway, and can find the corresponding Bluetooth according to the mobile network number of the Bluetooth mobile phone and the fixed telephone number of the gateway. The extension number of the phone. The fixed telephone network calls the gateway, and adds the extension number to the calling number. The format can be, for example, "service access code + extension number + calling number", so that the gateway can notify the corresponding Bluetooth mobile phone ringing according to the extension number (S450). .

When a Bluetooth mobile phone is called from a mobile phone, the mobile network transfers the incoming call to the gateway, and the gateway rings (S460). Whether the Bluetooth phone rings can be set. The gateway extracts the calling number and transmits it to the Bluetooth mobile phone.

In addition, when the Bluetooth mobile phone dials the outside line through the gateway, the gateway automatically adds the “service access code + extension number” to the number dialed by the Bluetooth mobile phone, and calls out to the fixed telephone network (S470). The fixed telephone network can find the mobile number of the corresponding Bluetooth mobile phone according to the fixed telephone number of the gateway and the extension number of the Bluetooth mobile phone, and give the mobile network number of the Bluetooth mobile phone as the calling number. In this way, when multiple Bluetooth mobile phones are dialing an outside line through the same gateway, the number displayed by the other party's caller ID function is no longer the fixed telephone number of the gateway connection, but the mobile network number of the calling Bluetooth handset. Of course, the user can apply for the relevant business without having his or her number displayed on the called party.

Figure 5 is a flow chart illustrating a method of performing a related action when a Bluetooth mobile phone leaves the piconet where the gateway is located, in accordance with the present invention. Periodic event monitoring by Bluetooth mobile phone or gateway When any of the following facts are found, the Bluetooth mobile phone is considered to have left the piconet where the gateway is located.

(S510): 1) The Bluetooth mobile phone uses the HCI command "Read_RSSI" defined in the Bluetooth standard to read the signal strength indication (RSSI) value of the Bluetooth link of the specified gateway and the Bluetooth handset, when the value indicates that the signal quality is below the specified threshold ² ) The Bluetooth handset uses the standard HCI command "Get-Link-Quali ty" to get a 1-byte value of link quality information indicating that the link quality is below a specified threshold; and 3) the Bluetooth handset is judged at In the event of an HCI event, there is a broken link event with the specified gateway. Thereafter, the Bluetooth mobile phone cancels the call transfer to the fixed telephone number connected to the gateway through the mobile network (S520), and the gateway cancels the registration information when the Bluetooth mobile phone joins the piconet where the gateway is located through the fixed telephone network, for example, the gateway can dial: The "service access code + extension number + Bluetooth mobile phone network number" is performed (S530).

As described above, the present invention combines the call forwarding of a mobile network with a Bluetooth cordless telephone gateway, increasing the availability of a Bluetooth cordless telephone.

While the invention has been shown and described with respect to the preferred embodiments the embodiments of the embodiments of the invention Various changes.

Claims

Rights request

A method for implementing call forwarding of a Bluetooth mobile phone, characterized in that: the method comprises the steps of:

( a ) By pairing between the Bluetooth mobile phone and the gateway, the gateway dynamically assigns the extension number to the Bluetooth mobile phone and notifies the Bluetooth mobile phone of the fixed telephone number to which it is connected, and the Bluetooth mobile phone also notifies the gateway of its mobile network number;

(b) After pairing, when the Bluetooth mobile phone joins the piconet where the gateway is located, the Bluetooth mobile phone registers the call transfer with the fixed telephone number, and the gateway registers the mobile phone number of the Bluetooth mobile phone and its corresponding extension number to the fixed telephone network. ;

(c) When the call to the mobile network number of the Bluetooth mobile phone arrives at the fixed telephone network, the fixed telephone network searches for the corresponding extension number according to the mobile network number, and notifies the gateway of the extension number, and the gateway notifies the extension number according to the extension number. The corresponding Bluetooth mobile phone rings;

(d) When the Bluetooth mobile phone leaves the piconet where the gateway is located, the Bluetooth mobile phone cancels the call transfer, and the gateway cancels the registration information of the Bluetooth mobile phone from the fixed telephone network.

2. The method according to claim 1, wherein, when the Bluetooth mobile phone dials the external line through the gateway, the gateway notifies the fixed telephone network of the extension number of the Bluetooth mobile phone, and the fixed telephone network searches for the corresponding mobile network number according to the extension number. The mobile network number is displayed as the calling number to the called party.

3. A method according to claim 1, wherein the call to the mobile network number of the Bluetooth handset in step (c) is initiated by the fixed telephone.

4. The method according to claim 1, wherein the call to the mobile network number of the Bluetooth mobile phone in step (c) is initiated by the mobile phone, and the call is transferred by the mobile network to the fixed telephone network by call transfer, and the gateway is activated. The bell extracts the calling number and transmits it to the Bluetooth mobile phone.