CN1708172A

CN1708172A - Method for establishing privacy call

Info

Publication number: CN1708172A
Application number: CNA200410069706XA
Authority: CN
Inventors: 夏志立; 崔晓春; 沈敏军; 王波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-06-10
Filing date: 2004-07-09
Publication date: 2005-12-14
Anticipated expiration: 2024-07-09
Also published as: WO2005122461A1; CN100441030C

Abstract

The method of establishing privacy call has user ID set for each user terminal in the same virtual private network. The method includes the following steps: A. for the network side to send privacy call informing message including the user IDs of the calling mobile station and the called mobile station to the zone of the called mobile station, after receiving the request of establishing call from the calling mobile station; B. for the called mobile station to match the user ID with itself ID, and to send privacy call information responding message to the network side and come to step C for successful matching, or to end the process for unsuccessful matching; and C. for the network side receiving the responding message to connect the service channel between the calling mobile station and the called mobile station and to inform the calling mobile station and the called mobile station for establishing privacy call connection.

Description

A kind of method for building up of individual call

Technical field

The present invention relates to wireless communication technology field, particularly a kind of method for building up of individual call.

Background technology

Usually, existing mobile communications system can both realize point-to-point calling.Be example with global system for mobile communications (GSM) below, specify it and realize point-to-point call flow.For can be in whole Public Land Mobile Nerwork (PLMN) identifying user, generally need long telephone number to come the unique identification user, for example, existing China Mobile phone number is 11 bit digital.When the calling subscriber need need dial the other side's cell-phone number when another user makes a call, by the call function key on the terminal, make a call then.Figure 1 shows that the schematic flow sheet of existing gsm system realization point to point call.

Step 101～103, caller travelling carriage (MS) is initiated business request information SERVICEREQUEST to network side, and carrying type of service in this business request information is ordinary call; Network side replys the service request response message for caller MS after receiving this business request information; Afterwards, caller MS sends the SETUP message that connects to network side, comprises called phone number in this message, and these two phone numbers execution in step 104 afterwards of successfully contracting detects by Visited Location Registor (VLR) in the mobile switching centre of network side (MSC).

Step 104, after the MSC of network side finds called MS position district by VLR, in the district of called MS position, send beep-page message PAGINGREQUEST, comprise the international mobile subscriber identity (IMSI) or the temporary mobile subscriber identity (TMSI) of called MS in this beep-page message by paging channel (PCH).This beep-page message issues on paging channel according to paging cycle, and its paging cycle is generally 1 to 2 second, and therefore, the time delay of this message is longer.

Step 105, MS in the above-mentioned lane place judges whether IMSI or the TMSI in the beep-page message that receives mates with IMSI of self or TMSI, as do not match, then do not process, as coupling, then, be used to trigger the assigning process of Initial Channel Assignment, and continue execution in step 106 to network side channel request message CHANNEL REQUEST.

Step 106～111, the called MS of network lateral response send allocated channel message IMMEDIATE ASSIGNMENT immediately, start channel and set up process; Called MS sends PAGING RESPONSE message by Asynchronous Balanced Mode (SABM, Set Asynchronous Balanced Mode) frame is set to network side, and network side sends to called MS does not have numbering response (UA) message, is used for confirming.Afterwards, network side sends to called MS and sets up message SETUP, comprises all the required information of channel of setting up among this SETUP, as the type of requested service and calling number etc.; After called MS receives this SETUP message, to network side answering call acknowledge message CALL CONFIRMED, so that SETUP message is confirmed.At this moment, set up between called MS and the network side and called out required channel.

Step 112～115, called MS sends reminder message ALERTING to network side, finishes with informing network side channel assignment; Behind called subscriber's off-hook, called MS sends connection message CONNET to network side, and network side is replied connection response message CONNECTACKNOWLEDGE to called MS after receiving this message; Afterwards, carry out normal point to point call between the calling and called MS.

From above-mentioned flow process, can find out, when mobile communication system realizes point to point call, have following many places time delay: at first,, therefore when calling out, need long dialing time because user ID is longer usually.Secondly, owing to must use paging channel PCH during the network issuing page message in the paging, therefore, its paging cycle has determined that the paging time delay is longer.At last, the user receives its response process more complicated after the paging, has comprised that channel foundation, user shake processes such as bell, user's response, user's ring-back tone, user's off-hook, and therefore, the time delay of this page response is also longer.

Though above-mentioned mobile communication system can realize point to point call, because its implementation procedure is comparatively complicated, and time delay is longer, thereby it is difficult to satisfy specific group, as police, fire fighter, warehouse keeper and property security personnel etc., and the requirement of communication in time.Simultaneously, because above-mentioned mobile communication system is used the full duplex mode pattern, it need take a large amount of Radio Resources.

PTT (Push to Talk) is a kind of speech business of PoC, promptly by pinning a kind of half-duplex voice business that function key realizes communication.This business has a variety of implementations at present.The basic service that PTT provides is voice group call service (VGCS).VGCS allows to belong to set up between one group of user of a certain predefined group call region and group id (ID) and calls out.This business adopts semiduplex mode, and any member during the calling in a group can become the speaker, but arbitrary moment only allow a speaker, other members are the hearer.Predefined group call region is by forming as if thousand sub-districts that belong to same mobile switch (MSC) or different MS C, each related cell has a group-calling channel during calling, current talker uses uplink group cal Traffic Channel (TCH), promptly organize emission mode, all hearers use descending TCH, i.e. group receive mode.The notification message of group-calling channel configuration is gone up broadcasting at notification channel (NCH).Because same community user is shared a down channel, thereby use VGCS and saved Radio Resource greatly.

Though above-mentioned half-duplex voice business call setup speed has been saved Radio Resource soon and greatly, speaker or hearer position relative fixed, and can only realize the calling of one-to-many can not realizing point-to-point calling.Therefore, it can not satisfy the requirement of user to conversing privacy.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method for building up of individual call, and this method can make to connect rapidly between the calling and called user and realize the point to point call of privacy, can also save wireless network resource.

According to above-mentioned purpose, main technical schemes of the present invention is achieved in that

A kind of method for building up of individual call, for each user terminal that belongs in the same Virtual Private Network is provided with user ID, this method is further comprising the steps of:

After a, network side receive the call setup request message that comprises calling and called user of mobile station sign from the caller travelling carriage, issue to called mobile station position district and to comprise calling and called user of mobile station sign individual call notification message;

After travelling carriage in the described lane place of b, step a detects the individual call notification message, user ID in this message and the sign of self are complementary,, send individual call push-notification-answer message, execution in step c then to network side as the match is successful; If coupling is unsuccessful, then process ends;

C, network side are that the group-calling service channel that the calling and called travelling carriage disposes respectively connects with network side after receiving individual call push-notification-answer message from called mobile station, and notice caller travelling carriage is set up individual call with called mobile station and is connected.

The described secret notification message of step a also is included as the configuration information of the group-calling service channel of called mobile station distribution;

Step c further comprises: called mobile station is monitored the group-calling service channel that distributes according to the configuration information in this secret notification message.

After the described network side of step c received individual call push-notification-answer message from called mobile station, this method further comprised:

C1, network side are sent as the configuration information of the group-calling service channel of called mobile station distribution to called mobile station;

C2, called mobile station are monitored the group-calling service channel that distributes according to configuration information.

Described user ID comprises Virtual Private Network sign and Virtual Private Network internal indicator two parts.

The described network side of step a issues the individual call notification message by notification channel to called mobile station position district;

The described travelling carriage of step b detects the individual call notification message by notification channel.

Step a described called mobile station position district is inquired from Visited Location Registor VLR by network side.

The process that the described group-calling service channel that the calling and called travelling carriage is disposed respectively of step c connects is: according to the individual call push-notification-answer message that called mobile station sends, network side determines whether the calling and called travelling carriage belongs to same sub-district,

If called mobile station and caller travelling carriage are in the same sub-district, then network side is that the caller travelling carriage distributes identical group-calling service channel resource with called mobile station;

If the caller travelling carriage is with in called mobile station is in different sub-districts, then network side distributes the group calling traffic channel resource respectively for it in the sub-district at place separately at the calling and called travelling carriage, and the group-calling service of distributing to the calling and called travelling carriage is respectively connected.

Described calling and called travelling carriage is convertd the uplink group cal Traffic Channel by PoC PTT mode.

This method further comprises the process that the caller travelling carriage is converted to the private hearer:

D, caller travelling carriage send to network side and discharge caller travelling carriage ascending voice traffic channel message;

E, network side assign to the downlink voice Traffic Channel with the caller travelling carriage, send the special-purpose release message of group calling sending mode to the caller travelling carriage;

F, caller travelling carriage receive and are converted to the private hearer after this message and monitor the voice group call service channel, return the response of this release message to network side.

After the described network side of step a receives and sets up request message from the individual call that comprises calling and called user of mobile station sign of caller travelling carriage, further comprise: whether successfully signatory network side check the individual call of the calling and called user ID in this message, if, then continue execution in step b, otherwise direct process ends.

The call setup request message of the described caller travelling carriage of step a sends to network side at pre-assigned Separate Dedicated Control Channel or pre-assigned group-calling service channel.

Step c is described to distribute voice traffic channel to believe that by schema modification modern CH-MOD-MODFY distributes, and perhaps distributes by Separate Dedicated Control Channel SDCCH to called mobile station;

The described caller travelling carriage of giving of step c distributes voice traffic channel network side when network side one receives call setup request message to distribute for the caller travelling carriage.

Use the present invention, network side issues the individual call notification message that comprises calling and called MS user ID by NCH after receiving the call setup request message that comprises calling and called MS user ID of caller MS transmission to called MS position district; MS in the district of called position after detecting the individual call notification message by NCH is complementary user ID in this message and the sign of self, if coupling is unsuccessful, then do not process, and process ends; As the match is successful, then monitor respective channel, and send individual call push-notification-answer message to network side according to channel matched information, be calling and called MS configuration up-downgoing Traffic Channel TCH simultaneously, network side is notified caller MS to set up individual call with called MS to be connected then.Use method of the present invention and have following advantage:

At first, communication can be used cornet between the same VPN internal user terminal, makes calling more convenient.

Secondly, there is not the cycle of issuing in the NCH channel, every frame all issues data, thereby for the PCH paging, has avoided the paging delivery time delay.

Once more, called MS only needs to the network response once, caller can be talked, and does not need processes such as corresponding ring-back tone, off-hook, and is very quick, relatively is fit to the professional user, as police, fire fighter etc.

At last,, therefore can save a pair of up-downgoing channel resource, save wireless network resource by half-duplex mode because same VPN user terminal usually in a fixed range, can cover by an independent sub-district.

Use the method for the invention, make the interior user of same VPN intercom convenient, quick, efficient mutually.

Description of drawings

Fig. 1 is the schematic flow sheet that existing gsm system is realized point to point call.

Fig. 2 is for using the schematic flow sheet of realization individual call of the present invention.

Fig. 3 sets up the modern flow chart of letter of individual call by Separate Dedicated Control Channel (SD) assignment immediately for the present invention.

Fig. 4 sets up the signaling process figure of individual call by TCH assignment immediately for the present invention.

Fig. 5 is the signaling process figure that sets up individual call of performance boost of the present invention.

Embodiment

In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.

The present invention is primarily aimed at the user in same group or the same group, and the user in this same group or the same group must belong to same VPN(Virtual Private Network).

Thinking of the present invention is: adopt semiduplex mode to realize individual call (Point to Point PTT), promptly realize that special P TT calls out between two MS in same group scope.Use the method for the invention, making the user pin the PTT key can speak, and unclamps the PTT key and then can only listen.Be that caller MS is in the group calling sending mode, called MS is in the group calling receiving mode.In the time of in calling both sides is in same sub-district, the down channel of both sides' shared service channel (TCH) is fought for this TCH up channel by the PTT mode; In the time of in calling both sides is in different districts, take a wireless channel respectively, both sides still fight for the speaking right profit by the PTT mode.

To reduce time delay in order making between the calling and called MS in same group or the group as far as possible, to connect rapidly, need user ID be set for the MS in same group or the group.This user ID is that user's cornet two parts constitute by VPN sign and VPN internal indicator.Like this, when caller MS need another MS in this VPN makes a call, the VPN internal indicator that directly dials the other side was user's cornet, got final product by the call function key on the caller MS terminal then.

Figure 2 shows that the schematic flow sheet of using realization individual call of the present invention.

Step 201, caller MS send (IMMEDIATE SETUP) message that connects immediately to network side, promptly set up individual call message, comprise the VPN sign of these calling and called in this message, the VPN internal indicator of caller MS is that the user's cornet of caller MS self and the VPN internal indicator of called MS are user's cornet of called MS, the MSC of network side detects above-mentioned two user's cornets execution in step 202 afterwards of successfully contract by VLR.

The MSC of step 202, network side issues individual call notification message (PTPNOTIFICATION REQUEST) by the NCH channel after finding called MS position district by VLR in the district of called MS position, start channel and set up process.Because the NCH channel does not issue the cycle, thereby every frame data all issue.The VPN internal indicator that comprises VPN sign, caller MS in the above-mentioned individual call notification message is that the user's cornet of caller MS self and the VPN internal indicator of called MS are user's cornet of called MS, simultaneously, can also comprise or not comprise called MS TCH configuration information to be used in this message.

Usually comprise a plurality of sub-districts in the same position district, therefore, the MS that belongs to together in a plurality of sub-districts of a lane place with called MS can receive the point to point call notification message that issues by the NCH channel.

MS in step 203～204, the above-mentioned a plurality of sub-districts judges that the VPN that receives in the beep-page message identifies and whether the VPN internal indicator of called MS mates with the VPN of self sign and VPN internal indicator on the NCH channel, as does not match, and does not then process.If coupling when beep-page message comprises called MS and waits to use the configuration information of TCH, is then monitored corresponding TCH according to the information in this message; When beep-page message does not comprise called MS and waits to use the configuration information of TCH, send individual call push-notification-answer message (PTP NOTIFICATION RESPONSE) to network side, request distribution T CH, network side issues the TCH configuration information to called MS, and called MS is monitored corresponding TCH according to the TCH configuration information.

Network side judges that according to the response message of called MS the position between this called MS and the caller MS concerns, if called MS and caller MS are in the same sub-district, then network side is that caller MS distributes identical up-downgoing TCH channel resource with called MS, and calling and called MS fights for this TCH up channel by the PTT mode; Thereby realization resource-sharing.If caller MS is with in called MS is in different sub-districts, then network side distributes up-downgoing TCH channel resource respectively for it in the sub-district at place separately at calling and called MS.Both sides still fight for the speaking right profit by the PTT mode.

Step 205～206, network side send to caller MS and connect CONNET message, notify caller MS on called MS, finish the process of setting up of individual call between the calling and called MS, realize the secret conversation.

Below with specific embodiment the present invention is described respectively.

Fig. 3 sets up the signaling process figure of individual call by SD assignment immediately for the present invention, do not comprise the configuration information that called MS waits to use TCH in the beep-page message described in Fig. 3, Fig. 3 supposes that caller MS sub-district, current place and sub-district, the current place of called MS all belong to same base station sub-system (BSS) administration, and its concrete steps are:

Step 300～301, when caller MS initiates individual call, to BSS channel request message (RACH (CHAN-REQ)), BSS returns allocated channel message (IMM-ASS) immediately;

Step 302～304, caller MS send holostrome three message (SABM (IMMEDIATE-SETUP)) to BSS on the channel of assignment, the type of service of carrying in this message is individual call and carries this individual call reference, this individual call is with reference to the VPN internal indicator that comprises this individual call VPN sign, calling and called MS, caller MS sign, i.e. information such as the IMSI of caller MS or TMSI; BSS reports to MSC and sets up message (IMMEDIATE-SETUP) immediately, and this message carries caller MS and sends all information in holostrome three message, and simultaneously, BSS returns the response (UA (IMMEDIATE-SETUP)) that receives complete layer three message to caller MS;

Step 305, MSC carry out the authentication ciphering process (Authentication﹠amp of standard to this individual call; Ciphering), if the authentication success then changes step 306 over to; Otherwise, process ends;

The process that MSC carries out authentication is: the information of carrying according to the IMMEDIATE-SETUP that receives is judged the calling and called MS secret call service of whether having contracted, and whether calling and called MS is same VPN.

Step 306～307, MSC are sent in sub-district, caller MS place to BSS and set up TCH message (VPCS-ASS-REQ), adopt the delay assignment strategy in the message, promptly temporarily do not give caller MS place cell allocation TCH; BSS sends the response (VPCS-ASS-COMP) that receives this message to MSC, does not temporarily give caller MS distribution T CH;

Step 308, MSC send caller MS assignment request message (ASS-REQ) to BSS, and this message is used for connecting to caller MS assignment SD is special-purpose, and this message is carried this individual call reference and voice (Talker) cell;

Step 309～311, BSS send Assignment Command message (ASS-CMD) for caller MS in the special-purpose connection of SD, and caller MS sets up TCH according to this order, returns assignment to BSS and finishes message (ASS-CMP), and BSS returns assignment to MSC and finishes message (ASS-CMP);

Step 312, MSC send connectionless secret paging request message (BSSMAP-VPCS-PAGING) to BSS;

Step 313, BSS carry out secret notice (NOTIFICATION (No Chan Descript)) on informing business channel (NCH), this secret notice comprises this individual call reference, but does not comprise the TCH descriptor that caller MS distributes;

If step 314, called MS monitoring NCH channel when monitoring this this called MS of individual call paging, sends the TCH request (RACH (CH-REQ)) of setting up by NCH to BSS;

Whether called MS mates according to the sign of this individual call VPN in the group call reference of secret notice, called VPN internal indicator and the VPN sign of self storing in advance, called VPN internal indicator determines whether sending the TCH request;

Step 315, BSS give called MS assignment SD channel (IMM-ASS) immediately;

Step 316, called MS send the response (SABM (VPCS-NOTIFICATION-RESPONSE)) of secret notice to BSS on the SD of assignment channel, BSS transmits this response and gives MSC (VPCS-NOTIFICATION-RESPONSE);

Step 317, MSC send the message (CONNECT) that can talk for caller MS;

Step 318～319, MSC send to called MS assignment request message (VPCS-ASS-REQ) to BSS, this message comprises the TCH descriptor of individual call reference and caller MS, but do not comprise the Talker cell, BSS sets up the TCH of caller MS and the TCH link of called MS at network side according to assignment request message, and returns the response (VPCS-ASS-COMP) of receiving this message;

Step 320～323, MSC send assignment request message (ASS-REQ) to BSS, called MS are assigned on the TCH channel of the called MS of being distributed; MSC sends the message (CHAN-RELEASE (TCH)) that discharges the SD channel to called MS, this message is carried the TCH that distributes to called MS, called MS discharges the SD channel, the TCH that passes through to be distributed enters the group calling receiving mode, send the response (DISC) that discharges the SD channel to BSS, BSS sends the response (ASS-COMP) of assignment request message to MSC;

Step 324～325, caller MS discharge up TCH and become the hearer, send the message (UPLINK-RELEASE) that discharges up TCH channel to BSS, and BSS sends to MSC and discharges the caller up TCH channel massage of MS (UPLINK-RELEASE-IND);

Step 326～329, MSC send assignment request message (ASS-REQ) to BSS, and caller MS is assigned on the descending TCH channel; BSS sends the special-purpose connection release message (CHAN-RELEASE (TCH)) of TCH group calling sending mode to caller MS, this message is carried the TCH channel information that is distributed to caller MS, caller MS enters the group calling receiving mode, caller MS is to the response (DISC) of BSS transmission release message, and BSS sends the response (ASS-COMP) of assignment request message to MSC.

Fig. 4 sets up the modern flow chart of letter of individual call for the present invention by TCH assignment immediately, and the process that the process that this figure describes and Fig. 3 describe is substantially the same, and difference is that step 309 and the step 310 among Fig. 3 is different with step 409 and step 410 among Fig. 4:

Step 409, BSS revise message (CH-MOD-MODFY) for caller MS sending mode in the special-purpose connection of the TCH that caller MS has set up, and this message is carried individual call reference and voice (Talker) cell;

Step 410, caller MS return the affirmation message (CH-MOD-MODFY-ACK) of this message to BSS.

Because this method does not need to set up the SD channel and is used for interacting message between caller MS and the BSS, carry out interacting message and directly use between TCH channel that caller MS set up and the BSS, so slightly more excellent than the described process performance of Fig. 3, improvement in performance is about 100 milliseconds.

Fig. 5 is the signaling process figure that sets up individual call of performance boost of the present invention, as shown in the figure, MSC receives complete layer three message in step 304, monitoring out these complete layer three message is the calling of individual call type, execution in step 313 at first just, in execution in step 305 and following step thereof successively, make MSC can obtain the push-notification-answer that called MS reports sooner then, reach the purpose that promotes the individual call performance.When caller MS and called MS belong to same sub-district, Fig. 5 also omits step 318 and step 319, need not set up being connected of TCH channel of the TCH channel of caller MS and called MS, and directly use the up-downgoing of giving the TCH that caller MS distributes to realize individual call between the calling and called MS.

After adopting the signaling process of setting up individual call of the described performance boost of Fig. 5, individual call is set up performance and is promoted 100～150MS approximately.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of method for building up of individual call is characterized in that, for each user terminal that belongs in the same Virtual Private Network is provided with user ID, this method is further comprising the steps of:

2, the method for claim 1 is characterized in that, the described secret notification message of step a also is included as the configuration information of the group-calling service channel of called mobile station distribution;

3, the method for claim 1 is characterized in that, after the described network side of step c received individual call push-notification-answer message from called mobile station, this method further comprised:

4, method according to claim 1 is characterized in that, described user ID comprises Virtual Private Network sign and Virtual Private Network internal indicator two parts.

5, method according to claim 1 is characterized in that,

6, method according to claim 1 is characterized in that, step a described called mobile station position district is inquired from Visited Location Registor VLR by network side.

7, method according to claim 1, it is characterized in that, the process that the described group-calling service channel that the calling and called travelling carriage is disposed respectively of step c connects is: according to the individual call push-notification-answer message of called mobile station transmission, network side determines whether the calling and called travelling carriage belongs to same sub-district

8, method according to claim 7 is characterized in that, described calling and called travelling carriage is convertd the uplink group cal Traffic Channel by PoC PTT mode.

9, method according to claim 1 is characterized in that, this method further comprises the process that the caller travelling carriage is converted to the private hearer:

10, method according to claim 1, it is characterized in that, after the described network side of step a receives and sets up request message from the individual call that comprises calling and called user of mobile station sign of caller travelling carriage, further comprise: whether successfully signatory network side check the individual call of the calling and called user ID in this message, if, then continue execution in step b, otherwise direct process ends.

11, the method for claim 1 is characterized in that, the call setup request message of the described caller travelling carriage of step a sends to network side at pre-assigned Separate Dedicated Control Channel or pre-assigned group-calling service channel.

12, the method for claim 1 is characterized in that, step c is described to distribute voice traffic channel to distribute by schema modification signaling CH-MOD-MODFY to called mobile station, perhaps distributes by Separate Dedicated Control Channel SDCCH;