CN101001417A - Method, trunkingexchange centre and system of call forwarding in trunking call system - Google Patents
Method, trunkingexchange centre and system of call forwarding in trunking call system Download PDFInfo
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- CN101001417A CN101001417A CN 200610063771 CN200610063771A CN101001417A CN 101001417 A CN101001417 A CN 101001417A CN 200610063771 CN200610063771 CN 200610063771 CN 200610063771 A CN200610063771 A CN 200610063771A CN 101001417 A CN101001417 A CN 101001417A
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Abstract
This invention discloses a method, a cluster exchange center and a system for realizing user terminal call transfer in a cluster call system, in which, said method calls a first user terminal to get the excited call transfer information from its signed data and transfers the call to that of a second user terminal. This invention also discloses a cluster exchange center and a system for realizing the method of user terminal call transfer.
Description
Technical field
The present invention relates to moving communicating field.Relate in particular to calling transfer technology in the digital cluster system.
Background technology
Digital cluster communication is the novel mobile communication system that rise at the twentieth century end, it is except possessing public mobile network such as global system for mobile communications (GSM, Global System for Mobilecommunications), code division multiple access (CDMA, Code Division Multiple Access) outside the personal mobile communication service that communication system can provide, can also realize any communication between individual and colony, and can carry out control from the chief editor, be the intelligent communication network that collection intercom, GSM (or CDMA) and image are transmitted in one.For user terminal provides the half-duplex call of point-to-point, one-to-many, its main service object is colonies such as various groups, tissue, enterprise, and method of calling and dispatch service such as individual calling, group calling, broadcasting are provided for colony.Main feature is group communication, press-and-talk, adopts half-duplex operation, sets up fast.
Individual calling (1X calling): the man-to-man interchange of member in the call group, voice can not be heard by the third party.
Group calling: the same time can only a people speak in the call group, and its speech can be heard by other all members, allow to seize right to speak.
Broadcast ﹠ call: speaker's voice broadcast service is given all other members in the call group, and does not allow other member to seize right to speak.
As shown in Figure 1, be a kind of digital cluster system structural representation of prior art, this digital cluster system comprises base station sub-system (BSS, Base Station Subsystem), Trunking Switching Center (TSC, Trunking Switch Center), mobile switching subsystem (MSS, Mobile Switch System), Group and List Management Server (GLMS, Group List Management Server) and a plurality of user terminal (MS, Mobile Station).Base station sub-system BSS further comprises at least one base station controller (BSC, Base Station Controller) or at least one packet data control function (PCF:PacketControl Function), and a plurality of base stations under described base station controller or the packet data control function (BTS, Base Transceiver Station).
User terminal can carry out trunked call by Trunking Switching Center TSC, promptly any user terminal MS of this network all can initiate trunked call to Trunking Switching Center TSC by base station BTS under it and base station controller BSC, carries out trunked call by Trunking Switching Center TSC.Also can carry out common individual calling by mobile switching subsystem MSS.
The TSC Trunking Switching Center is responsible for finishing the distribution of media and the signaling process function of trunked call, wireless network, public switched telephone network (PSTN) (PSTN are provided, Public Switched Telephone Network)/integrated services digital network (ISDN, Integrated Services Digital Network) and the interface of IP Multimedia System (IMS, IP multimedia subsystem) network.
The GLMS server is a Group and List Management Server, and the user terminal data of its saveset group business is used for TSC.System manager, each group user terminal management person can carry out dynamic management to user terminal data by the Web mode.
Call transfer service comprises:
1. unconditioned call connection
Unconditioned call connection allows user terminal to be transferred to his all callings on another telephone number that sets in advance or in the Voice Mailbox of user terminal.
2. call forwarding on busy
Calling forwarding on busy is meant when user terminal is busy, allows user terminal that its calling is forwarded to another telephone number that sets in advance or the Voice Mailbox of user terminal.
3. unreachable Call Forwarding
Unreachable calling Call Forwarding is meant and paging failure ought calledly occur, during situations such as Assignment Failure or user terminal shutdown, allows user terminal to be transferred to its calling on another telephone number that sets in advance or in the Voice Mailbox of user terminal.
For present digital cluster system, when user terminal need carry out call transfer service, digital cluster system can't provide this business to user terminal.
Summary of the invention
Embodiments of the invention provide user terminal call transfer method in a kind of group calling system, a kind of Trunking Switching Center and a kind of digital cluster system, realize the call transfer service in digital cluster call of user terminal, make digital cluster call more flexible.
Call transfer method in a kind of digital cluster system wherein, may further comprise the steps:
First user terminal is called out, from its subscription data, obtained the call-forwarding information of its activation;
Judge whether current calling to first user terminal satisfies the calling transfer condition in the call-forwarding information;
Calling transfer condition in satisfying call-forwarding information then will be transferred to calling to Call Forwarding side's second user terminal to the calling of first user terminal.
A kind of Trunking Switching Center, wherein, this Trunking Switching Center comprises CAMEL-Subscription-Information acquiring unit, calling transfer judging unit, calling transfer processing unit, and described CAMEL-Subscription-Information acquiring unit obtains the subscription data of called user terminal and from wherein obtaining the call-forwarding information that called user terminal activates; Whether described calling transfer judgment unit judges satisfies calling transfer condition in the call-forwarding information to the calling of called user terminal, as satisfying the calling transfer condition, then described calling transfer processing unit will make a call for commentaries on classics side forward to the Call Transfer of called user terminal.
A kind of digital cluster system, this digital cluster system comprises base station controller, list management server, Trunking Switching Center, it is characterized in that, described Trunking Switching Center further comprises CAMEL-Subscription-Information acquiring unit, calling transfer judging unit, calling transfer processing unit, and described CAMEL-Subscription-Information acquiring unit obtains the subscription data of called user terminal and from wherein obtaining the call-forwarding information that called user terminal activates from list management server; Whether described calling transfer judgment unit judges satisfies calling transfer condition in the call-forwarding information to the calling of called user terminal, as satisfy the calling transfer condition, then described calling transfer processing unit sends call transfer request and gives base station controller, and the base station controller side of commentaries on classics forward makes a call.
Compared with prior art, technique scheme is by the needs of Trunking Switching Center TSC according to called state, obtain the information of the calling transfer of user terminal activation from the subscription data of called user terminal, whether judgement satisfies the condition of calling transfer to the calling of called user terminal, then preceding commentaries on classics side is carried out respective call as satisfying, realize the digital cluster system call transfer service, made digital cluster call more flexible.
Description of drawings
Fig. 1 is the structural representation of group calling system of the prior art.
Fig. 2 is the flow chart of the unconditional call forwarding of preferable first embodiment of the present invention.
Fig. 3 is the busy calling transfer flow chart of the busy chance of the network decision of preferable second embodiment of the present invention.
Fig. 4 is the busy calling transfer flow chart of the busy chance of the called decision of preferable the 3rd embodiment of the present invention.
Fig. 5 is the unreachable calling transfer of user terminal of preferable the 4th embodiment flow chart of the present invention.
Fig. 6 is the structural representation of the system of calling transfer in the system embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
The calling transfer of group calling system of the present invention, can occur in the various calling procedures such as individual calling, group calling, broadcasting, and called MS 1 and preceding commentaries on classics MS2 can also can be administered by different BTS respectively, but MS1 and MS2 be administered by same BSC by same BTS administration.But be the convenience of describing, following better embodiment is that example is described with some user terminals in individual calling, group calling or the broadcasting process only all.
The flow chart of the unconditional call forwarding of preferable first embodiment of the present invention can be as shown in Figure 2, for realizing the unconditional call forwarding of called user terminal MS1 to forwarding subscriber terminal MS 2, the unconditional branch business that MS1 activates, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2 are set in the subscription data of the MS1 of GLMS, then when certain user terminal MS0 caller party terminal MS1, the groundwork process of its calling transfer can be as described below, mainly comprises the steps.Step 101, certain user terminal MS0 initiates the calling to MS1;
Certain user terminal MS0 initiates the calling to MS1, after the base station controller BSC under the user terminal MS1 is received the call request of MS0 to MS1, requires Trunking Switching Center TSC inquiry MS1 subscription data.
Step 102, TSC is to the subscription data of GLMS inquiry MS1;
Trunking Switching Center TSC is according to the requirement of the inquiry MS1 subscription data of receiving, to the subscription data of Group and List Management Server GLMS inquiry MS1.
Step 103, GLMS returns the subscription data of MS1 to TSC;
GLMS returns the subscription data of MS1 to TSC, and this subscription data carries the information of the unconditional branch business that MS1 activated, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2.
Step 104, TSC analyzes the subscription data of MS1, therefrom obtains the information (comprising user activated unconditional branch business, the number of preceding commentaries on classics side MS2 and preceding commentaries on classics sign) of the unconditional branch business that MS1 activated, and then triggers unconditional branch;
Step 105, TSC sends a message to BSC, carries the described preceding number that changes sign and preceding commentaries on classics side MS2 in the described message;
Step 106, BSC sends to call out and is invited to MS2;
BSC sends calling and is invited to MS2 according to the number of preceding commentaries on classics sign and preceding commentaries on classics side MS2.
Step 107, MS2 sends setup requests to BSC;
Step 108, BSC sends setup requests to TSC;
Step 109 after the setup requests of TSC verification MS2 is legal, sends and calls out assignment message to BSC.Preserve the number of former called MS 1 among the TSC, be used for the demonstration of user terminal state or group's state, when showing, called number still is shown as the number of MS1;
Step 110, BSC finishes the air traffic channel domination with MS2;
Step 111, MS2 sends call setup and finishes message to BSC;
Step 112, BSC sends call setup and finishes message to TSC;
Step 113, TSC issues the right of speech control messages to BSC, and in right of speech control, the called number that shows in the message relevant with MS2 still is the number of former called MS 1;
Step 114, BSC sends the right of speech control messages to MS2.
Meet busy calling transfer and be under the busy state of called user terminal, will transfer to calling to the preceding side of commentariesing on classics to the calling of called user terminal, with the unconditional branch process, called user terminal hurries can be divided into two kinds of situations to the calling procedure of preceding commentaries on classics side:
Network decision is busy: call out when inviting called at TSC, find that user terminal is busy, TSC decision user terminal is busy.At present, the busy realization of network decision has two kinds of situations: first, user terminal is participating in a trunked call (may be individual calling, group calling, broadcast ﹠ call), and TSC itself can be in the session by this user terminal of record, and this situation directly triggers the calling transfer flow process.The second, user terminal is participating in a 1X and is calling out, and TSC can issue invitation message in this case, if invite the response that can not get user terminal always, just thinks that user terminal is busy.
Called decision is busy: when called user terminal is received calling invitation, refuse this calling by terminal operation, TSC judges Reason For Denial, and the decision user terminal is busy.
The flow chart of the calling transfer that the network decision of preferable second embodiment of the present invention is busy may further comprise the steps as shown in Figure 3:
The number that increases call forward on busy professional and preceding commentaries on classics side that MS1 activates in the subscription data of the MS1 of GLMS is data and the preceding commentaries on classics sign of MS2.
Step 201, user terminal is initiated the calling to MS1;
Certain user terminal MS0 initiates the calling to MS1, after the base station controller BSC under the user terminal MS1 is received the call request of MS0 to MS1, requires Trunking Switching Center TSC inquiry MS1 subscription data.
Step 202, TSC is to the subscription data of GLMS inquiry MS1;
Trunking Switching Center TSC is according to the requirement of the inquiry MS1 subscription data of receiving, to the subscription data of Group and List Management Server GLMS inquiry MS1.
Step 203, GLMS returns the subscription data of MS1 to TSC;
GLMS returns the subscription data of MS1 to TSC, and this subscription data carries call forward on busy professional information, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2 that MS1 has activated.
Step 204, TSC judges the subscription data of MS1, therefrom obtains the busy calling transfer transfer service information of chance that MS1 has activated; If MS1 is participating in a trunked call, then TSC directly enters step 207 according to the state of the user terminal that is write down; Call out if MS1 is participating in a 1X, no MS1 current state information then enters step 205 among the TSC.
Step 205, TSC is earlier to the MS1 invitation that makes a call;
Step 206 is invited called overtimely, thinks that user terminal is busy, triggers and meets busy calling transfer flow process;
Because participating in a 1X, calls out MS1, so invite called MS 1 overtime, TSC judges that called user terminal MS1 is busy, triggers and meets busy calling transfer flow process: the number of commentaries on classics side MS2 before obtaining from the subscription data of MS1, the side of the commentaries on classics MS2 invitation that makes a call forward, execution in step 207.
Step 207, TSC sends a message to BSC, changes the number of sign and MS2 before carrying in the described message;
Step 208, BSC sends to call out and is invited to MS2;
BSC calls out according to the number transmission of preceding commentaries on classics sign and MS2 and is invited to MS2.
Step 209, MS2 sends setup requests to BSC;
Step 210, BSC sends setup requests to TSC;
Step 211 after the setup requests of TSC verification MS2 is legal, sends and calls out assignment message to BSC;
After the setup requests of TSC verification MS2 is legal, sends and call out assignment message to BSC, preserve the number of former called MS 1 among the TSC, be used for the demonstration of user terminal state or group's state, when showing, called number still is shown as the number of MS1.
Step 212, BSC finishes the air traffic channel domination with MS2;
Step 213, MS2 sends call setup and finishes message to BSC;
Step 214, BSC sends call setup and finishes message to TSC;
Step 215, TSC issues the right of speech control messages to BSC, and in right of speech control, the called number that shows in the message relevant with MS2 still is the number of former called MS 1;
Step 216, BSC sends the right of speech control messages to MS2.
Preferable the 3rd embodiment of the present invention for called user terminal MS1 passes through terminal operation, initiatively refuses the busy calling transfer flow chart of chance of this calling as shown in Figure 4, may further comprise the steps:
In the subscription data of the MS1 of GLMS, increase number and the preceding commentaries on classics sign of call forward on busy professional and preceding commentaries on classics side MS2 that MS1 activates;
Step 301, user terminal is initiated the calling to MS1;
Certain user terminal MS0 initiates the calling to MS1, after the base station controller BSC under the user terminal MS1 is received the call request of MS0 to MS1, requires Trunking Switching Center TSC inquiry MS1 subscription data.
Step 302, TSC is to the subscription data of GLMS inquiry MS1;
Trunking Switching Center TSC is according to the requirement of the inquiry MS1 subscription data of receiving, to the subscription data of Group and List Management Server GLMS inquiry MS1.
Step 303, GLMS returns the subscription data of MS1 to TSC;
GLMS returns the subscription data of MS1 to TSC, and this subscription data carries call forward on busy professional information, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2 that MS1 has activated.
Step 304, TSC judges the subscription data of MS1.Therefrom obtain MS1 and activated the business information of meeting busy calling transfer transfer;
Step 305, TSC is to the MS1 invitation that makes a call;
Step 306, MS1 sends setup requests;
Step 307, TSC issues the calling assignment message, the ring of user terminal MS1 terminal;
Step 308, user terminal MS1 initiatively refuses this calling by terminal operation;
Step 309, MS1 sends the request of withdrawing from of calling out to TSC;
Step 310, the calling that TSC sends according to MS1 withdraw from the request judgement and withdraw from former because user terminal normally withdraws from, and triggering is called forward on busy; The number of commentaries on classics side MS2 before from the subscription data of MS1, obtaining, the side of the commentaries on classics MS2 invitation that makes a call forward;
Step 311, TSC sends a message to BSC, changes the number of sign and MS2 before carrying in the described message;
Step 312, BSC sends to call out and is invited to MS2;
BSC calls out according to the number transmission of preceding commentaries on classics sign and MS2 and is invited to MS2.
Step 313, MS2 sends setup requests to BSC;
Step 314, BSC sends setup requests to TSC;
Step 315 after the setup requests of TSC verification MS2 is legal, sends and calls out assignment message to BSC.Preserve the number of former called MS 1 among the TSC, be used for the demonstration of user terminal state or group's state; When showing, called number still is shown as the number of MS1;
Step 316, BSC finishes the air traffic channel domination with MS2;
Step 317, MS2 sends call setup and finishes message to BSC;
Step 318, BSC sends call setup and finishes message to TSC;
Step 319, TSC issues the right of speech control messages to BSC, and in right of speech control, the called number that shows in the message relevant with MS2 still is the number of former called MS 1;
Step 320, BSC sends the right of speech control messages to MS2.
The unreachable calling transfer of user terminal generally is used for paging failure, Assignment Failure or be used for triggering the calling transfer process under the state such as shutdown.The unreachable calling transfer of user terminal of preferable the 4th embodiment flow chart of the present invention may further comprise the steps as shown in Figure 5:
The unreachable transfer service of user terminal MS1 excited users terminal is transferred to MS2; Increase the unreachable call transfer service of user terminal of MS1 activation and number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2 in the subscription data of MS1;
Step 401, user terminal is initiated the calling to MS1;
Certain user terminal MS0 initiates the calling to MS1, after the base station controller BSC under the user terminal MS1 is received the call request of MS0 to MS1, requires Trunking Switching Center TSC inquiry MS1 subscription data.
Step 402, TSC is to the subscription data of GLMS inquiry MS1;
Trunking Switching Center TSC is according to the requirement of the inquiry MS1 subscription data of receiving, to the subscription data of Group and List Management Server GLMS inquiry MS1.
Step 403, G1MS returns the subscription data of MS1 to TSC;
GLMS returns the subscription data of MS1 to TSC, and this subscription data carries the unreachable call transfer service information of user terminal that MS1 activated, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS2.
Step 404, TSC judges the subscription data of MS1;
TSC judges the subscription data of MS1, therefrom obtains the unreachable call transfer service information of user terminal that MS1 has activated.If user terminal MS1 does not start shooting, then unregistered in TSC, TSC directly enters step 414 according to the user terminal MS1 subscription data that obtains; If user terminal is started shooting, then enter step 405;
Step 405, TSC by BSC to the MS1 invitation that makes a call;
Step 406, MS1 sends setup requests by BSC;
Step 407, TS1 sends to BSC and calls out assignment;
Step 408 because certain is unusual, inserts the side failure, and then BSC sends the request of taking out stitches, perhaps TSC wait timeout to TSC.
A lot of situations can cause inviting called failure, as paging/access channel overload, can't paging can't insert BSC/BTS inadequate resource or the like to user terminal or user terminal;
If TSC has sent assignment, because inner reason failure such as BSC inadequate resource then can send the request of taking out stitches to TSC;
If because paging/reasons such as access channel overload, BSC does not receive the response of mobile phone, then do not have any message and give TSC, then TSC wait timeout;
Step 409, TSC judges that user terminal MS1 is unreachable, triggers the unreachable calling transfer flow process of user terminal, transmits the number of MS2 before obtaining from the subscription data of MS1, the side of the commentaries on classics MS2 invitation that makes a call forward;
Step 410, TSC sends a message to BSC, changes the number of sign and MS2 before carrying in the described message;
Step 411, BSC sends to call out and is invited to MS2;
BSC calls out according to the number transmission of preceding commentaries on classics sign and MS2 and is invited to MS2.
Step 412, MS2 sends setup requests to BSC;
Step 413, BSC sends setup requests to TSC;
Step 414 after the setup requests of TSC verification MS2 is legal, sends and calls out assignment message to BSC, preserves the number of former called MS 1 among the TSC, is used for the demonstration of user terminal state or group's state, and when showing, called number still is shown as the number of MS1;
Step 415, BSC finishes the air traffic channel domination with MS2;
Step 416, MS2 sends the intact message that claims of call setup to BSC;
Step 417, BSC sends call setup and finishes message to TSC;
Step 418, TSC issues the right of speech control messages.In right of speech control, the called number that shows in the message relevant with MS2 still is the number of called MS 1;
Step 419, BSC sends the right of speech control messages to MS2.
Among four embodiment recited above, except that user's off-mode, the registration if user terminal has been started shooting, the data of TSC meeting cache user terminal are so step 2 and step 3 can be omitted in these cases.
In above-mentioned calling procedure, in the associative operation that former called MS 1 is carried out (as scheduling operation, state demonstration, right of speech control etc.), TSC is external: as the number that is still MS1 of user terminal displays; To inside: the number of commentaries on classics side MS2 before then obtaining according to the number of MS1 transfers operation to MS2 to the operation of MS1.
Fig. 6 is a structural representation of realizing the trunked communication system of calling transfer in the embodiment of the invention.This trunked communication system comprises Trunking Switching Center TSC51, list management server GLMS52, base station controller BSC 53, called user terminal MS54, preceding commentaries on classics method, subscriber terminal MS55.Wherein Trunking Switching Center TSC51 further comprises CAMEL-Subscription-Information query unit 511, calling transfer judging unit 512, calling transfer processing unit 513, user terminal state acquiring unit 514.
Wherein, the subscription data of list management server GLMS 52 storage user terminal MS54, and according to the setting of user terminal MS54, list management server GLMS 52 also stores the number of call transfer service, preceding commentaries on classics sign and the preceding commentaries on classics method, subscriber terminal MS55 of user terminal MS54 activation.Wherein, the call transfer service information that activates of user terminal MS54 comprise the unconditional branch business, the business of calling forward on busy, the unreachable call transfer service of user terminal.
The calling transfer course of work of this trunked communication system is mainly as described below:
Certain user terminal MS0 initiates the calling to user terminal MS54, after base station controller BSC 53 under the user terminal MS54 is received the call request of user terminal MS0 to user terminal MS54, require Trunking Switching Center TSC51 inquiring user terminal MS 54 subscription data.
The CAMEL-Subscription-Information query unit 511 of Trunking Switching Center TSC51 sends query requests to described list management server GLMS52, the subscription data of request inquiring user terminal MS 54.List management server GLMS52 returns the subscription data of MS54 according to the request of the inquiry MS54 subscription data of receiving to CAMEL-Subscription-Information query unit 511.This subscription data carries the call transfer service information that MS54 activated, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS55.Described call transfer service information can be for unconditional branch business, the business of calling forward on busy, the unreachable call transfer service of user terminal a kind of.
CAMEL-Subscription-Information query unit 511 is passed to calling transfer judging unit 512 with the subscription data of MS54, calling transfer judging unit 512 is analyzed the subscription data of these MS54, therefrom obtains the call transfer service information that MS54 activated, number and the preceding commentaries on classics sign of preceding commentaries on classics side MS55.User terminal state acquiring unit 514 obtains user terminal MS55 current state and user terminal MS55 current state information is passed to calling transfer judging unit 512.
The call transfer service information that calling transfer judging unit 512 has activated according to MS54, the number of preceding commentaries on classics side MS55 and preceding commentaries on classics sign again according to the MS55 current state information, judge whether the MS55 current state satisfies the call transfer service condition.
1) when the subscription data of MS54 carried the number of unconditional branch business information, preceding commentaries on classics side MS55 and preceding commentaries on classics sign, calling transfer judging unit 512 determined that current calling transfer are unconditional call forwarding.
2) when the subscription data of MS54 carried the number of the business information of calling forward on busy, preceding commentaries on classics side MS55 and preceding commentaries on classics sign, calling transfer judging unit 512 determined that current calling transfer are for meeting busy calling transfer.
The called user terminal current state that calling transfer judging unit 512 obtains according to user terminal state acquiring unit 514 again,
If MS54 is participating in a trunked call, then 512 of calling transfer judging units judge that directly the user terminal current state satisfies the busy calling transfer condition of meeting, then notification call transfer processing unit 513 sends buanch unit message to BSC53, changes the number of sign and MS55 before carrying in the described message;
If participating in a 1X, calls out MS54, calling transfer judging unit 512 is to participate in a 1X to call out the satisfied busy calling transfer condition of meeting according to the called user terminal current state of user terminal state acquiring unit 514 again, then notification call transfer processing unit 513 sends buanch unit message to BSC53, changes the number of sign and MS55 before carrying in the described message;
If MS54 initiatively refuses to call out, the calling that user terminal state acquiring unit 514 sends according to MS54 is withdrawed from request and is obtained the current state of user and hurry for the user, calling transfer judging unit 512 satisfies the busy calling transfer condition of meeting according to the called user terminal current state of user terminal state acquiring unit 514 again for the user is busy, then notification call transfer processing unit 513 sends buanch unit message to BSC53, changes the number of sign and MS55 before carrying in the described message;
3) when the subscription data of MS54 carried the number of the unreachable transfer service information of user, preceding commentaries on classics side MS55 and preceding commentaries on classics sign, calling transfer judging unit 512 determined that current calling transfer are the unreachable calling transfer of user.If user terminal MS54 does not start shooting, then unregistered in TSC51, then 512 of calling transfer judging units judge that directly the user terminal current state satisfies the unreachable calling transfer condition of user, then notification call transfer processing unit 513 sends buanch unit message to BSC53, changes the number of sign and MS55 before carrying in the described message;
If because certain is unusual, the failure of access side, the request of taking out stitches that user terminal state acquiring unit 514 sends to TSC51 according to BSC53, perhaps TSC51 wait timeout and the current state that obtains the user is unreachable for the user, calling transfer judging unit 512 is that the user is unreachable according to the called user terminal current state of user terminal state acquiring unit 514 again, then notification call transfer processing unit 513 sends buanch unit message to BSC53, changes the number of sign and MS55 before carrying in the described message;
Calling transfer judging unit 512 according to the called user terminal CAMEL-Subscription-Information that CAMEL-Subscription-Information query unit 511 obtains, obtains the condition of the call transfer service of user terminal activation.Whether calling transfer judging unit 512 satisfies the call transfer service condition according to the called user terminal current state of user terminal state acquiring unit 514 again, as satisfies condition and then carry out calling transfer, then notification call transfer processing unit 513.Then do not carry out calling transfer as not satisfying.
Call treatment realizes unit 513, changes the number of sign and preceding commentaries on classics side MS55 before obtaining from subscription data, and sends to base station controller BSC 53.
User terminal state acquiring unit 514 is used to obtain user terminal MS54 current state.
If user terminal MS54 is in off-mode, perhaps just participating in trunked call, then the user terminal state acquiring unit directly has the user terminal current state, can directly feed back to calling transfer judging unit 512;
If but user terminal is in open state, do not participate in trunked call, then the user terminal state acquiring unit then can make a call to user terminal MS54 by BSC53, feeds back to calling transfer judging unit 512 with the current state that obtains user terminal;
Base station controller BSC 53, be used to set up described TSC51 and described before the transfer of the side of commentariesing on classics MS55 be connected, with the realization calling transfer
The above is preferred embodiment of the present invention closely, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, as to be done any modifications are equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1, call transfer method in the digital cluster system is characterized in that, may further comprise the steps:
First user terminal is called out, from its subscription data, obtained the call-forwarding information of its activation;
When determining that calling transfer condition in the call-forwarding information is satisfied in current calling to first user terminal, will transfer to calling to the calling of first user terminal to Call Forwarding side's second user terminal.
2, call transfer method in the digital cluster system as claimed in claim 1 is characterized in that, the call-forwarding information of user activated transfer service is set in first user's user contracting data.
3, call transfer method in the digital cluster system as claimed in claim 1, it is characterized in that, described call-forwarding information also comprise second user terminal number and preceding commentaries on classics sign, then will the calling that the calling of first user terminal is transferred to Call Forwarding side's second user terminal be specially: the Trunking Switching Center under first user terminal sends a message to the base station controller under first user terminal, changes the number of the sign and second user terminal before carrying in the described message; This base station controller is established to the calling of second user terminal according to the number that changes the sign and second user terminal before being somebody's turn to do.
4, call transfer method in the digital cluster system as claimed in claim 1 is characterized in that: described calling transfer condition comprises unconditional branch, meets busy calling transfer, the unreachable calling transfer of user terminal.
5, call transfer method in the digital cluster system as claimed in claim 1, it is characterized in that: before judging whether current calling to first user terminal satisfies calling transfer condition in the call-forwarding information, further comprise the current communicate status information of obtaining first user terminal, then judge according to this communicate status information whether current calling to first user terminal satisfies the calling transfer condition in the call-forwarding information.
6, call transfer method in the digital cluster system as claimed in claim 4, it is characterized in that: the communicate status information that described user terminal is current, comprise one of following situation, user terminal participates in trunked call, user terminal participates in individual calling and calls out, and the user terminal refusal is answered the user terminal paging failure, the user terminal Assignment Failure, the user terminal shutdown.
7, call transfer method in the digital cluster system as claimed in claim 1 is characterized in that: in the whole process of described call transferring method, Trunking Switching Center shows that externally called number still is the number of first user terminal.
8, a kind of Trunking Switching Center, it is characterized in that, this Trunking Switching Center comprises CAMEL-Subscription-Information acquiring unit, calling transfer judging unit, calling transfer processing unit, and described CAMEL-Subscription-Information acquiring unit obtains the subscription data of called user terminal and from wherein obtaining the call-forwarding information that called user terminal activates; Whether described calling transfer judgment unit judges satisfies calling transfer condition in the call-forwarding information to the calling of called user terminal, as satisfying the calling transfer condition, then described calling transfer processing unit will make a call for commentaries on classics side forward to the Call Transfer of called user terminal.
9, a kind of Trunking Switching Center as claimed in claim 8, it is characterized in that: this Trunking Switching Center also comprises the user terminal state acquiring unit, be used to obtain the current communicate status information of called user terminal, then the calling transfer judging unit judges according to this communicate status information whether current calling to called user terminal satisfies the calling transfer condition in the call-forwarding information.
10, a kind of Trunking Switching Center as claimed in claim 9, it is characterized in that: the current communicate status information that the user terminal state acquiring unit obtains called user terminal is one of following situation, user terminal participates in trunked call, user terminal participates in individual calling and calls out, the user terminal refusal is answered, the user terminal paging failure, user terminal Assignment Failure, user terminal shutdown.
11, a kind of digital cluster system, this digital cluster system comprises base station controller, list management server, Trunking Switching Center, it is characterized in that, described Trunking Switching Center further comprises CAMEL-Subscription-Information acquiring unit, calling transfer judging unit, calling transfer processing unit, and described CAMEL-Subscription-Information acquiring unit obtains the subscription data of called user terminal and from wherein obtaining the call-forwarding information that called user terminal activates from list management server; Whether described calling transfer judgment unit judges satisfies calling transfer condition in the call-forwarding information to the calling of called user terminal, as satisfy the calling transfer condition, then described calling transfer processing unit sends call transfer request and gives base station controller, and the base station controller side of commentaries on classics forward makes a call.
12, as a kind of digital cluster system of claim 11, it is characterized in that: this Trunking Switching Center also comprises the user terminal state acquiring unit, be used to obtain the current communicate status information of called user terminal, then the calling transfer judging unit judges according to this communicate status information whether current calling to called user terminal satisfies the calling transfer condition in the call-forwarding information.
13, as a kind of digital cluster system of claim 12, it is characterized in that: the current communicate status information that the user terminal state acquiring unit obtains called user terminal is one of following situation, user terminal participates in trunked call, user terminal participates in individual calling and calls out, the user terminal refusal is answered, the user terminal paging failure, user terminal Assignment Failure, user terminal shutdown.
14, a kind of digital cluster system as claimed in claim 11, it is characterized in that, described call-forwarding information also comprise before commentaries on classics side number and preceding commentaries on classics sign, then carry the number that changes sign and preceding commentariess on classics side before described in the call transfer request that the calling transfer processing unit sends to base station controller, this base station controller according to should before commentaries on classics indicate and the number of preceding commentaries on classics side is established to the calling of preceding commentaries on classics side.
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| CNB2006100637710A CN100471307C (en) | 2006-12-31 | 2006-12-31 | Method, trunkingexchange centre and system of call forwarding in trunking call system |
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| CNB2006100637710A CN100471307C (en) | 2006-12-31 | 2006-12-31 | Method, trunkingexchange centre and system of call forwarding in trunking call system |
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| CN100471307C CN100471307C (en) | 2009-03-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101931914A (en) * | 2010-08-30 | 2010-12-29 | 中兴通讯股份有限公司 | Call forwarding method and device |
| WO2011140799A1 (en) * | 2010-05-11 | 2011-11-17 | 中兴通讯股份有限公司 | Method, system and base station for implementing compatibility between mobile call waiting and cluster call waiting |
| CN103024709A (en) * | 2012-11-16 | 2013-04-03 | 北京小米科技有限责任公司 | Method, device, server and terminal for realizing call forwarding |
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| CN107864460A (en) * | 2017-11-16 | 2018-03-30 | 北京小米移动软件有限公司 | Call transferring method, device and equipment |
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- 2006-12-31 CN CNB2006100637710A patent/CN100471307C/en not_active Expired - Fee Related
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| WO2011140799A1 (en) * | 2010-05-11 | 2011-11-17 | 中兴通讯股份有限公司 | Method, system and base station for implementing compatibility between mobile call waiting and cluster call waiting |
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| CN101931914A (en) * | 2010-08-30 | 2010-12-29 | 中兴通讯股份有限公司 | Call forwarding method and device |
| CN103024709A (en) * | 2012-11-16 | 2013-04-03 | 北京小米科技有限责任公司 | Method, device, server and terminal for realizing call forwarding |
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| CN108934036A (en) * | 2018-07-11 | 2018-12-04 | 中国联合网络通信集团有限公司 | The acquisition methods and device of base station state information |
| CN108934036B (en) * | 2018-07-11 | 2021-07-20 | 中国联合网络通信集团有限公司 | Method and device for acquiring state information of base station |
| CN110149596A (en) * | 2019-04-18 | 2019-08-20 | 海能达通信股份有限公司 | The method and storage medium that a kind of group of call forwarding moves |
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