CN1186918C - Method for transfering coming call for blue tooth mobile phone - Google Patents

Abstract

The present invention discloses a Bluetooth cell phone incoming call diversion method which comprises the following steps: a gateway receives request information and notifies telephone number information to a cell phone; the telephone number connected with the gateway is registered as a diversion number through a mobile telephone network; the cell phone uses link quality information defined in Bluetooth standards; when signal quality is under designated threshold value, or a link breaking event with a designated gateway occur in HCI events which are judged that the HCI events occur by the cell phone, the cell phone is considered that the cell phone leaves the micromicro network of the gateway, and the cell phone cancels registered gateway phone number through the mobile telephone network and finishes the call diversion to the network telephone number. When cell phones and gateways have the call diversion function of the present invention, incoming calls are transferred through fixed telephone lines rather than mobile networks, and therefore, users don't need to bear the interference and the attenuation of signals of cell phones, conversation quality is enhanced, and the expense is reduced to the incoming call diversion expense from the receiving expense of cell phones.

Description

The method that a kind of bluetooth cellular phone incoming call shifts

Technical field

The present invention relates to the mobile phone in the radio communication and the field of Bluetooth Communication Technology, relate to the method for call treatment particularly.

Background technology

Along with the urgency of cell phone (comprising GSM mobile handset, CDMA mobile phone etc.) number of users increases (the cellular number of users of China surpasses 1.4 hundred million at present), cellular telephone subscribers is more and more higher to the requirement of network service.Though mobile telephone network has almost covered the whole earth at present, signal can arrive special areas such as subway, elevator,, in any case there is certain unsteadiness in the signal of mobile telephone network.Between high buildings and large mansions, indoor, the interference of cellular phone signal and decay are inevitable.

Meanwhile, fixed-line telephone network has also extended to every household.Landline telephone with respect to the sharpest edges of mobile phone is: signal stabilization is reliable, and communication cost is cheap.

At present, cell phone and landline telephone often can not well be used.When the user goes out, must use cell phone externally to keep in touch, but when the user goes home or handles official business in office, wish to switch to landline telephone, to save communication cost, again higher speech quality can be arranged simultaneously.

In the prior art, exist a kind of short-distance wireless communication technology that is called as bluetooth (Bluetooth), it is operated in ISM (industry-science-medical treatment) frequency range of 2.4GHz.The piconet (Piconet) that the basic network topology of bluetooth is made up of a main control device and maximum seven slaves adopts the mode of time division multiple access (TDMA) to communicate between main control device and the slave.Utilize Bluetooth technology, can various device be coupled together in low-cost mode.The special interest group of bluetooth (Special Interest Group, be called for short SIG) be the non-government organization that formulates and instruct Bluetooth specification and application, in the cordless telephone application framework (CordlessPhoneProfile) of its definition, a kind of approach that utilizes Bluetooth technology to realize cordless telephone has been proposed, promptly, all be equipped with the blue teeth wireless transceiver module as the cordless fixed part (hereinafter referred to as gateway) of main control device with as the cordless telephone handset (hereinafter referred to as terminal) of slave, utilize bluetooth to carry out the transmission of voice and control signaling.Cordless fixed part links to each other with fixed network.Different with common cordless telephone, terminal can be again a cell phone simultaneously, and a gateway can connect maximum seven terminals.Such scheme has solved landline telephone and the cellular problem that is used to a great extent, has a good application prospect.

But the scheme of SIG is also imperfect, shows in the processing of calling out cellular incoming call, still will answer by mobile telephone network.As to the calling of cell phone number the time, mobile telephone network will be notified cell phone, and the user is subsequently in the enterprising words that work of cell phone.As can be seen, though cell phone in the bluetooth sphere of action of gateway, incoming telephone signal still will transmit by mobile telephone network, the user still will stand the interference and the decay of cellular phone signal, and can not reduce the communication cost of answering.Method of remedying is that electrotransfer is to gateway in the future when cell phone is in the sphere of action of gateway.As can be seen, after Bluetooth cordless telephone and gateway have possessed call forwarding function, incoming call will transmit by fixed telephone line, rather than the mobile network.Expense is reduced to cellular incoming call diverting call expense also by the cellular expense of answering.Bring convenience and material benefit for user's use.

Summary of the invention

Primary and foremost purpose of the present invention is to provide a kind of method that realizes that a kind of bluetooth cellular phone incoming call shifts under the above-mentioned situation.Above-mentioned purpose mainly is to realize by the method that increases gateway and cellular function.Described method comprises step:

(a) gateway receives the solicited message that cell phone request adds the piconet at gateway place;

(b) gateway is notified to cell phone with the telephone number information of the outside line that connected;

(c) by mobile telephone network, cell phone is registered as the telephone number that gateway connected the forwarding number of calling transfer service;

When (d) cell phone finds that following arbitrary fact takes place, think that then this cell phone has left the piconet at gateway place: cell phone uses the HCI order " Read_RSSI " that defines in bluetooth standard to read the signal strength indication value of specifying gateway and terminal Bluetooth link, when this value shows that signal quality is under assign thresholds; Cell phone uses standard HCI order " Get_Link_Quality " to obtain the link quality information of 1 byte numerical value, and this numerical tabular clear signal quality is under assign thresholds the time; In the HCI incident that cell phone judge to take place, have when taking place with the chain rupture incident of specifying gateway;

(e) cell phone is cancelled registered gateway telephone number by mobile telephone network and is finished to the calling transfer of this gateway telephone number.

After cell phone and gateway have possessed call forwarding function of the present invention, incoming call will transmit by fixed telephone line, rather than the mobile network, so the user needn't stand the interference and the decay of cellular phone signal, speech quality increases.Expense is reduced to cellular incoming call diverting call expense also by the cellular expense of answering.

Description of drawings

By describing the preferred embodiments of the present invention in detail, will help to understand objects and advantages of the present invention by accompanying drawing.Wherein:

Fig. 1 is the system block diagram of Bluetooth cordless telephone equipment (gateway or terminal);

Fig. 2 is a network configuration of explaining Bluetooth cordless telephone equipment;

Fig. 3 be explain Bluetooth cordless telephone when the outside line incoming call is arranged, the flow chart of terminal equipment answering conventional method;

Fig. 4 be explain according to of the present invention, when adding the terminal equipment of gateway place piconet, be used for the flow chart of the method for relevant action;

Fig. 5 be explain according to of the present invention, when leaving the terminal equipment of gateway place piconet, be used for the flow chart of the method for relevant action.

Embodiment

Fig. 1 is the system block diagram of Bluetooth cordless telephone equipment (gateway or terminal).In Fig. 1, Bluetooth cordless telephone equipment 100 is made up of plurality of function modules.Wherein, Bluetooth cordless telephone is used 110 and is provided the various functions of cordless telephone to the user, and its needed voice are provided by baseband controller 150; Needed control information is provided by SDP (service discovery protocol) 170 and TCS (phone control protocol) 120.The variety of protocol on standard communication protocol L2CAP (logical connection control and adapting protocol) 130 multiplexed upper stratas.HCI (HCI) driver 175 allows transmission standard HCI order and receives the response that causes thus; And receive and send data by L2CAP 130.HCI transport layer 180 is optional, when the upper-layer functionality module of HCI transport layer when the lower floor functional module is moved on different processor platforms, the HCI transport layer is responsible for the information transmission of intermodule, and the physical transfer mode of employing may be RS232, USB, UART, PCI or PCMCIA; When above-mentioned two generic modules operated in same processor platform, modes such as shared drive, parameter transmission, message were adopted in the information transmission, no longer need this transport layer.

Link manager 180 is responsible for receiving order and the data that upper layer module sends, and the result is returned to the upper strata.Link manager 180 is finished function corresponding by baseband controller 150 and wireless transmitter 160.LMP Link Manager Protocol 140 is used for the intercommunication mutually between the different Bluetooth devices link manager.Baseband controller 150 is according to the command operation of link manager 180.Wireless transmitter 160 wirelessly sends and receives information according to the specification of standard.

Fig. 2 explains the network configuration of Bluetooth cordless telephone equipment.Gateway 250 links to each other with external stability network 270 by outside line.Gateway 250 can be accepted the request that 7 station terminals add this network at most simultaneously as the main control device of piconet, after terminal adds this network, promptly becomes the slave of network.In this figure, co-exist in 5 station terminal A 210, B 220, C 230, D 240, E 260.In general, determine by the sensitivity of the power of the ripple that is sent or the ripple that receives whether radio communication is successful.In the Bluetooth wireless communication territory, the radio coverage of 2 class bluetooth communication standards is 10m.

Fig. 3 be explain Bluetooth cordless telephone when the outside line incoming call is arranged, the flow chart of slave answering conventional method.Terminal is at first determined gateway to be added in the mode of oneself.Terminal can adopt the periodically method of search, also can manually initiate search procedure (S310).After finding gateway, terminal is initiated the message (S320) that request adds network to gateway.The request of this terminal can be accepted or refuse to gateway according to the configuration of self.If this request is accepted, gateway need be revised the configuration by the network broadcast channel of its hosting, and this terminal is joined (S330) in the broadcast reception list.When gateway detects the incoming signal of outside line, by above-mentioned broadcast channel to all terminal rings (S340 and S350).After some ring terminal off-hooks are replied, between this terminal and gateway, set up point-to-point voice and connect, and gateway will be cancelled the ringing information to other terminal.

Fig. 4 be explain according to of the present invention, when adding the terminal of gateway place piconet, carry out the flow chart of the method for relevant action.When terminal when gateway is initiated the message that request adds network (S410 can contrast the S320 of Fig. 3), gateway agree link setup and with the telephone number of the outside line that connected pass to access terminal equipment (S420, S430).For example, behind call setup, gateway can pass to terminal with this number by the company's custom field " Company Specific " in the message " INFO SUGGEST " of TCS.Subsequently, terminal is called out by mobile network register and is transferred to outside line key that gateway connects (S440)

Fig. 5 be explain according to of the present invention, when leaving the terminal of gateway place piconet, carry out the flow chart of the method for relevant action.At first, terminal monitors and is about to leave with the sphere of action of gateway as the piconet (S510) of main control device.When terminal finds that following arbitrary fact takes place, think that then this terminal left the piconet at gateway place: terminal is used the HCI order " Read_RSSI " that defines in bluetooth standard to read to specify the gateway and the signal strength signal intensity of terminal Bluetooth link to indicate (RSSI) value, when this value shows that signal quality is under assign thresholds; Terminal uses standard HCI order " Get_Link_Quality " to obtain the link quality information of 1 byte numerical value, and this numerical tabular clear signal quality is under assign thresholds the time; In the HCI incident that terminal judges takes place, have when taking place with the chain rupture incident of specifying gateway.Afterwards, terminal is cancelled calling transfer (S520) to outside line key that gateway connects by the mobile network.

As mentioned above, the present invention combines mobile network's calling transfer and Bluetooth cordless telephone gateway, has increased the availability of Bluetooth cordless telephone.

Though the present invention illustrates and describes with reference to its preferred embodiment, but will be understood by those skilled in the art that, under the situation of the spirit and scope of the present invention that do not break away from the appended claims and limited, can carry out the various changes of form and details.

Claims (1)

1. the method that shifts of a bluetooth cellular phone incoming call, it is characterized in that: described method comprises step:

(a) gateway receives the solicited message that cell phone request adds the piconet at gateway place;

(b) gateway is notified to cell phone with the telephone number information of the outside line that connected;

(c) by mobile telephone network, cell phone is registered as the telephone number that gateway connected the forwarding number of calling transfer service;

When (d) cell phone finds that following arbitrary fact takes place, think that then this cell phone has left the piconet at gateway place: cell phone uses the HCI order " Read_RSSI " that defines in bluetooth standard to read the signal strength indication value of specifying gateway and terminal Bluetooth link, when this value shows that signal quality is under assign thresholds; Cell phone uses standard HCI order " Get_Link_Quality " to obtain the link quality information of 1 byte numerical value, and this numerical tabular clear signal quality is under assign thresholds the time; In the HCI incident that cell phone judge to take place, have when taking place with the chain rupture incident of specifying gateway;

(e) cell phone is cancelled registered gateway telephone number by mobile telephone network and is finished to the calling transfer of this gateway telephone number.

Images