CN102469424B - Method and system for processing later forwarding services - Google Patents
Method and system for processing later forwarding services Download PDFInfo
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- CN102469424B CN102469424B CN201010531255.2A CN201010531255A CN102469424B CN 102469424 B CN102469424 B CN 102469424B CN 201010531255 A CN201010531255 A CN 201010531255A CN 102469424 B CN102469424 B CN 102469424B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
Abstract
The invention discloses a method and a system for processing later forwarding services. The method comprises the following steps: when a calling user calls a called user, a gateway mobile switching center (GMSC) makes a first routing to a home location register HLR of the called user; when the called user cannot answer, the GMSC obtains the failure reasons that the called user cannot answer from the releasing messages and makes a second routing to the HLR of the called user according to the failure reasons; and the GMSC receives the forwarding information feedback by the HLR of the called user and transmits the calling made by the calling user to the appointed forwarding users in the forwarding information according to the forwarding information. The session resources can be saved by using the invention.
Description
Technical field
The present invention relates to the communications field, in particular to the late forward processing method and system of one.
Background technology
Along with increasing sharply of communication service, the alternative channel that interoffice may occur in the following cases (supposes that calling subscriber is party A-subscriber, called subscriber is party B-subscriber, forwarding subscriber is C user): party A-subscriber dials party B-subscriber, there is late forward in party B-subscriber, alternative channel can be there is when the visited place VMSC (Visited Mobile Switching Center, Visited Mobile Switching Center) of party B-subscriber is different from the visited place VMSC of C user.Described late forward refers to the forward-shifting service occurred after the visited place VMSC of party B-subscriber receives IAM (Initial Address Message, initialization address message) message.
The situation of concrete segmentation is a lot, and scene is exemplified below (being not limited to following scene):
1) party B-subscriber, C user ascription area are identical, and party B-subscriber there occurs roaming, and party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening;
2) party B-subscriber is identical with C user attaching MSC (Mobile Switching Center, mobile switching centre), and C user roams, party B-subscriber does not roam, and party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening;
3) party B-subscriber is identical with C user attaching MSC, and party B-subscriber and C user occur to roam and the visited place VMSC of the two is different, and party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening;
4) party B-subscriber is different with C user attaching MSC, and party B-subscriber and C user do not roam, and party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening;
5) party B-subscriber is different with C user attaching MSC, and party B-subscriber and C user occur to roam and the visited place VMSC of the two is different, and party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening;
6) party B-subscriber is different with C user attaching MSC, party B-subscriber with have user roaming in C user and the visited place VMSC of the two is different, party A-subscriber dials party B-subscriber, and party B-subscriber is forwarded to user C evening.
Now for 6) application scenarios be described, Fig. 1 is that existing ownership place user dials called subscriber, and late forward occurs, and is forwarded to the speech channel route schematic diagram under ownership place user situation, comprises the following steps:
The local called subscriber of step 102, calling user dials, called subscriber roams into other countries or area, and speech channel is routed to the user place tandem exchange of province of ownership place calling subscriber/be forwarded to by ownership place calling subscriber place end office (EO).
Step 104, call proceeding are to ownership place international gateway;
Step 106, call proceeding are to called roaming place international gateway;
Step 108, call proceeding are to roamer place, called roaming place toll switch;
Step 110, call proceeding are to called roaming place roamer place end office (EO);
There is late forward in step 112, called subscriber, is forwarded to the user of ownership place, and speech channel is routed to roamer place, called roaming place toll switch by called roaming place roamer place end office (EO);
Step 114, call out and be routed to called roaming place international gateway by roamer place, called roaming place toll switch;
Step 116, call proceeding are to ownership place international gateway;
Step 118, call proceeding are to the user place tandem exchange of province be forwarded to;
Step 120, call proceeding are to the user place end office (EO) be forwarded to.
Can find out, speech channel continues between middle step 102 to step 120 and defines alternative channel.
Refer to a kind of routing optimization method in the prior art, as shown in Figure 2, for convenience of signal, in fig. 2, calling subscriber be positioned at GMSC (the Gateway Mobile Switching Center of visited network, GMSC (gateway mobile switching center)) just represent with GMSC, HLR (the Home Location Register of called subscriber, attaching position register) be expressed as HLRB, the VLR of called subscriber roaming place is expressed as VLRB, called subscriber roaming place VMSC is expressed as VMSCB, and forwarding subscriber place VMSC is expressed as VMSCC, comprising:
The local called subscriber of step 202, calling user dials, called subscriber roams into other countries, and GMSC sends route request information to HLRB, wherein carries preferred route related information;
Step 204, HLRB send PRN (Provide Roaming Number, the request of Providing Roaming Number) message to VLRB, wherein carry preferred route related information;
Step 206, VLRB return PRN ACK (Provide Roaming Number Acknowledge, Provide Roaming Number confirmation) message to HLRB, wherein carry preferred route related information;
Step 208, HLRB return route requests acknowledgement message to GMSC, wherein carry preferred route related information;
Step 210, GMSC send IAM message to VMSCB;
Step 212, VMSCB transmit into call request message to the VLRB of its correspondence;
Step 214, VLRB transmit into call confirmation message to the VMSCB of its correspondence;
Step 216, VMSCB send continuation call treatment message according to the Redirection Information obtained to GMSC, and instruction GMSC carries out preferred route processing;
Route request information request Redirection Information is sent to HLRB after step 218, GMSC receive preferred route processing message;
Step 220, HLRB send route requests acknowledgement message to GMSC;
Step 222, GMSC judge that calling subscriber and forwarding subscriber are at same country, then send to former called subscriber roaming place VMSCB and continue call treatment acknowledgement message;
Step 224, GMSC send release message to former called subscriber roaming place VMSCB;
Step 226, GMSC find route according to the number be forwarded to, and forwards user place VMSCC sends IAM message.
Fig. 3, for adopting the speech channel route schematic diagram of the routing optimization method shown in Fig. 2, comprises the following steps:
Step 302: speech channel is routed to the user place tandem exchange of province of ownership place calling subscriber/be forwarded to by ownership place calling subscriber place end office (EO);
Step 304: call proceeding is to the end office (EO) being forwarded to user place.
As can be seen from above explanation, prior art provides preferred routing function to save speech channel, but need visited place and ownership place all will support this function, in actual motion, can not ensure that preferred routing function is also supported in visited place, that is, prior art is not high about the applicability of the routing optimization method of forwarded calls, still cannot avoid the problem occurring alternative channel in session in actual applications, cause the waste of Session Resources.
There is alternative channel for avoiding in prior art in session, cause the problem of the waste of Session Resources, not yet propose effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of late forward processing method and system, occurs alternative channel, cause the problem of the waste of Session Resources at least to solve above-mentioned cannot avoiding in session.
According to an aspect of the present invention, provide a kind of late forward processing method, comprising: when calling subscriber makes a call to called subscriber, GMSC (gateway mobile switching center) GMSC initiates first time route to the attaching position register HLR of described called subscriber; When described called subscriber cannot reply, described GMSC obtains the failure cause that described called subscriber cannot reply from release message, and according to the HLR initiation second time route of described failure cause to described called subscriber; The Redirection Information that the HLR that described GMSC receives described called subscriber returns, and according to the forwarding subscriber that the call proceeding that described calling subscriber initiates by described Redirection Information is specified to Redirection Information.
Preferably, the failure cause that described called subscriber cannot reply comprises: unreachable, the described called subscriber busy of described called subscriber and described called subscriber's nonreply.
Preferably, when described called subscriber cannot reply, described GMSC obtains the failure cause that described called subscriber cannot reply from release message, and according to the HLR initiation second time route of described failure cause to described called subscriber, comprise: when the Visited Mobile Switching Center VMSC of described called subscriber finds that described called subscriber cannot reply, the VMSC of described called subscriber sends described release message to described GMSC, and indicating call failure, carries release cause in described release message; Described GMSC, according to the HLR transmission route request information of described release cause to called subscriber, carries described release cause in described route request information.
Preferably, described release message comprises: ALERTING message or call progress message.
Preferably, when unreachable, the described called subscriber busy of described called subscriber or described called subscriber's nonreply, the VMSC of described called subscriber sends described release message to described GMSC.
Preferably, when described called subscriber is unreachable, do not carry forwarding data in the insertion user data requests message of the VLR transmission of described called subscriber, wherein, described forwarding data comprises transferred number.
Preferably, described GMSC comprises: called subscriber described in described calling user dials before obtaining the failure cause that described called subscriber cannot reply, and described GMSC sends route request information to the HLR of described called subscriber; The HLR of described called subscriber sends to the VLR of described called subscriber the request PRN message that Provides Roaming Number; The VLR of described called subscriber sends to Provide Roaming Number to the HLR of described called subscriber and confirms PRN ACK message; The HLR of described called subscriber sends route requests acknowledgement message to described GMSC; Described GMSC sends initialization address message to the VMSC of described called subscriber.
Preferably, HLR from GMSC to called subscriber initiate first time route after, before initiating second time route according to described failure cause to the HLR of described called subscriber, also comprise: the HLR of described called subscriber carries forward inquiry mark in first time route acknowledgement message.
According to a further aspect in the invention, provide a kind of late forward processing system, comprise the attaching position register HLR of GMSC (gateway mobile switching center) GMSC and called subscriber: described GMSC, when making a call to described called subscriber for described calling subscriber, the HLR to described called subscriber initiates first time route; When described called subscriber cannot reply, from release message, obtain the failure cause that described called subscriber cannot reply, and according to the HLR initiation second time route of described failure cause to described called subscriber; The Redirection Information that the HLR receiving described called subscriber returns, and according to the forwarding subscriber that the call proceeding that described calling subscriber initiates by described Redirection Information is specified to Redirection Information; The HLR of described called subscriber, for sending to described GMSC by described Redirection Information when second time route.
Preferably, also comprising the Visited Mobile Switching Center VMSC of described called subscriber: the VMSC of described called subscriber, during for finding that described called subscriber cannot reply, sending described release message to described GMSC, indicating call failure, carries release cause in described release message; Described GMSC, is further used for, according to the HLR transmission route request information of described release cause to called subscriber, carrying described release cause in described route request information.
Preferably, described GMSC, is further used for described in described calling user dials during called subscriber, and the HLR to described called subscriber sends route request information; VMSC to described called subscriber sends initialization address message; The HLR of described called subscriber, the VLR be further used for described called subscriber send the request PRN message that Provides Roaming Number; Route requests acknowledgement message is sent to described GMSC; The VLR of described called subscriber, is further used for sending to Provide Roaming Number to the HLR of described called subscriber confirming PRN ACK message.
In embodiments of the present invention, do not need the switch of called subscriber visited place to do any special processing, speech channel is directly continued calling subscriber and being forwarded between user, does not need the visited place VMSC through called subscriber roundabout, can traffic resource be saved.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the local called subscriber of calling user dials of prior art, and late forward occurs called subscriber, and be forwarded to the speech channel route schematic diagram in forwarding subscriber situation, wherein forwarding subscriber is identical with the ownership place of called subscriber;
Fig. 2 is the flow chart of prior art about the routing optimization method of Fig. 1 application scenarios;
Fig. 3 is the speech channel route schematic diagram of prior art about the routing optimization method of Fig. 1 application scenarios;
Fig. 4 is the process chart of the late forward route optimisation process method of the embodiment of the present invention;
Fig. 5 is the flow chart of the GMSC initiation second time route of the embodiment of the present invention;
Fig. 6 is the process chart that the called subscriber of the embodiment of the present invention obtains the roaming address after renewal;
Fig. 7 is the user of embodiment of the present invention when roaming into the visited network of not support call forward routing optimality function, and user attaching HLR does not insert the process chart of Redirection Information to user visiting network;
Fig. 8 is the process chart that the GMSC of the embodiment of the present invention obtains before the failure cause that cannot reply of called subscriber;
Fig. 9 is the flow chart of the Signalling exchange of the late forward processing method of the embodiment of the present invention;
Figure 10 is the position update flow schematic diagram of the late forward processing method of the embodiment of the present invention;
Figure 11 is the first structural representation of the late forward processing system of the embodiment of the present invention;
Figure 12 is the second structural representation of the late forward processing system of the embodiment of the present invention;
Figure 13 is the third structural representation of the late forward processing system of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Mention existence in prior art cannot avoid occurring alternative channel in session, cause the problem of the waste of Session Resources, for solving the problems of the technologies described above, embodiments provide a kind of late forward processing method, handling process as shown in Figure 4, comprising:
When step 402, calling subscriber make a call to called subscriber, GMSC (gateway mobile switching center) GMSC initiates first time route to the attaching position register HLR of called subscriber;
Step 404, when called subscriber cannot reply, GMSC obtains the failure cause that called subscriber cannot reply from release message, and initiates second time route requests Redirection Information according to failure cause to the HLR of called subscriber;
The Redirection Information that the HLR that step 406, GMSC receive called subscriber returns, comprises the information such as transferred number, and according to the forwarding subscriber that the call proceeding that calling subscriber initiates by Redirection Information is specified to Redirection Information.
Further, to be HLR carry forward inquiry mark to the precondition that step 404 performs in first time route acknowledgement message.
In embodiments of the present invention, even if the switch of called subscriber roaming place does not support the routing optimality function of prior art, the application embodiment of the present invention can make speech channel directly continue between calling subscriber and forwarding subscriber, do not need the visited place VMSC through called subscriber roundabout, can traffic resource be saved.
During enforcement, the embodiment of the present invention is not only applicable to move dials mobile subscriber, and be also applicable to fixed-line subscriber and dial mobile subscriber, the user be forwarded to can be mobile subscriber also can be fixed-line subscriber.
During enforcement, the failure cause that called subscriber cannot reply comprises multiple situation, such as, cannot paging to called subscriber, unreachable, the called subscriber busy of called subscriber, called subscriber's nonreply etc., concrete condition depends on actual conditions.
During enforcement, when called subscriber cannot reply, GMSC obtains the failure cause that called subscriber cannot reply, and according to the HLR initiation second time route of failure cause to called subscriber, handling process as shown in Figure 5, comprising:
When the Visited Mobile Switching Center VMSC of step 502, called subscriber finds that called subscriber cannot reply, the VMSC of called subscriber sends release message to GMSC, and indicating call failure, carries release cause in release message;
Step 504, GMSC, according to the HLR transmission route request information of release cause to called subscriber, carry release cause in route request information.
During enforcement, release message can have multiple enforcement means, such as, ALERTING message or call progress message can be adopted as release message, certainly can also adopt other message, be not limited in ALERTING message or call progress message.
During enforcement, when called subscriber is unreachable, do not carry forwarding data in the insertion user data requests message of the VLR transmission of called subscriber, wherein, forwarding data comprises transferred number.
Called subscriber obtains the handling process of the visit address after renewal as shown in Figure 6, comprising:
The VLR Visitor Location Register VLR of step 602, called subscriber sends location update message to the HLR of called subscriber;
The HLR of step 604, called subscriber inserts user data requests message to the VLR transmission of called subscriber, wherein, inserts in user data requests message and does not carry Redirection Information;
The VLR of step 606, called subscriber returns to the HLR of called subscriber and inserts user data acknowledgement message;
The HLR of step 608, called subscriber upgrades acknowledgement message to the VLR home position of called subscriber roaming place.
Consider the compatibility with prior art Call Forwarding and Call Forwarding routing optimality, when the visited network not support call forward routing optimality of called subscriber, for avoiding calling directly in visited network generation forward, instead of directly return release message, the embodiment of the present invention provides following three kinds of solutions further:
Scheme one: when user roams into the visited network of not support call forward routing optimality function, user attaching HLR does not insert Redirection Information to user visiting network, and handling process as shown in Figure 7, comprising:
The VLR Visitor Location Register VLR of step 702, user sends location update message to the HLR of user;
The HLR of step 704, user sends first bar to the VLR of user visiting network and inserts user data requests message, and wherein, first bar inserts in user data requests message and do not carry Redirection Information;
The VLR of step 706, user returns to the HLR of user and inserts user data acknowledgement message, carries the instruction of visited network whether support call routing optimality function in message;
The HLR of step 708, user checks user visiting network whether support call routing optimality function, if do not supported, HLR not in follow-up insertion user data requests message to user visiting network egress access customer Redirection Information, after download user data complete, HLR upgrades acknowledgement message to the VLR home position of user roaming place.
When implementing, before the failure cause that GMSC acquisition called subscriber cannot reply, different from the routing optimization method that prior art is mentioned, perform and operate as shown in Figure 8:
Step 802, calling user dials called subscriber, GMSC sends route request information to the HLR of called subscriber, carries the indication information whether GMSC supports to strengthen routing optimality in message;
The HLR of step 804, called subscriber sends to the VLR of called subscriber visited place the request PRN message that Provides Roaming Number;
The VLR of step 806, called subscriber sends to Provide Roaming Number to the HLR of called subscriber and confirms PRN ACK message;
By the indication information in route request information, the HLR of step 808, called subscriber checks whether GMSC supports enhancing routing optimality function provided by the invention, if GMSC does not support, HLR inserts Redirection Information to the visited network of called subscriber, comprises user's forward subscription data such as transferred number;
The HLR of step 810, called subscriber sends route requests acknowledgement message to GMSC;
Step 812, GMSC send initialization address message to the VMSC of called subscriber.
Further, after step 804, before step 806, if VLR sends restoring user data request (Restore) to HLR, the method that HLR inserts user data to VLR in Restore process is identical with the method inserting user data in Fig. 7.
Scheme two: whether the visited network no matter user occurs to roam supports the routing optimality function of prior art, and HLR is not without exception to user visiting network egress access customer Redirection Information.
Subsequent voice calls process is if GMSC supports the enhancing routing optimality function that the embodiment of the present invention provides with the difference of scheme one, HLR needs to check whether user visiting network supports the routing optimality function of prior art further, if the routing optimality function of user visiting network support prior art, HLR needs to user visiting network egress access customer Redirection Information, preferential to ensure the routing optimality function of prior art.
Further, user visiting network carries the instruction whether supporting routing optimality function in PRN ACK response message, according to indication information, HLR judges whether user visiting network supports the routing optimality function of prior art.
Further, if VLR sends restoring user data request (Restore) to HLR in calling procedure, whether the visited network no matter user occurs to roam supports the routing optimality function of prior art, and HLR is same not to user visiting network egress access customer Redirection Information in Restore process.
Scheme three: the visited network that user attaching HLR normally occurs to roam to user when processing position update flow inserts user's forwarding data information.
In subsequent voice calls handling process, called subscriber belongs to HLR after receiving PRN ACK message, judges whether the visited network whether GMSC supports that enhancing routing optimality function of the present invention and user occur to roam supports the routing optimality function of prior art.If GMSC supports enhancing routing optimality function of the present invention, and whether the visited network that user occurs to roam does not support the routing optimality function of prior art, HLR deletes subscriber data message deletion to the visited network that user occurs to roam and is kept at user's forwarding data information in user visiting network VLR.
Further, user visiting network carries the instruction whether supporting routing optimality function in PRN ACK response message, according to indication information, HLR judges whether user visiting network supports the routing optimality function of prior art.
For ease of comparing with the routing optimization method that prior art provides, now the late forward processing method flow chart similar to Fig. 2 adopting the embodiment of the present invention to provide being represented, referring to Fig. 9:
The local called subscriber of step 902, calling user dials, called subscriber roams into other countries, and calling subscriber institute is positioned at the HLR transmission route request information of GMSC to called subscriber of visited network;
The HLR of step 904, called subscriber sends PRN message to the VLR of called subscriber visited place;
The VLR of step 906, called subscriber visited place sends PRNACK message to the HLR of called subscriber;
The HLR of step 908, called subscriber sends route requests acknowledgement message to the GMSC of called subscriber's ownership place;
The GMSC of step 910, called subscriber's ownership place sends initialization address message to called subscriber visited place VMSC;
Step 912, called subscriber visited place VMSC find called subscriber busy or no-response paging or nonreply;
Step 914, called subscriber visited place VMSC send release message (ALERTING message or call progress message) to the GMSC of its ownership place, indicating call failure;
The GMSC of step 916, called subscriber's ownership place is according to HLR transmission route request information (wherein carry release cause) of the release cause in step 407 to called subscriber;
The failure cause that the HLR of step 918, called subscriber brings according to GMSC in route request information returns corresponding Redirection Information to wanting the GMSC of route;
Step 920, GMSC are called to according to the Redirection Information in HLR route response message the user indicated in Redirection Information.
During enforcement, the late forward processing method that the embodiment of the present invention provides is different from the processing method mentioned in prior art, accordingly, also incomplete same in charging criterion, the interaction process of the charging criterion in the late forward processing method herein provided the embodiment of the present invention and existing route optimisation technique is described, namely, GMSC carries out the process of step 920 when judging the charging criterion that current route situation meets in existing route optimisation technique, current route situation performs step 920 when not meeting the charging criterion in existing route optimisation technique or call release is decided in its sole discretion by operator.
Figure 10 is the position update flow schematic diagram that have employed the late forward processing method that embodiment of the present invention scheme one or scheme two provide, and comprises the following steps:
Step 1002, user visiting ground HLR from VLR to user send location update request message;
The HLR of step 1004, user does not carry Redirection Information when the VLR of visited place sends and inserts user data requests message;
The VLR of step 1006, visited place returns to the HLR of user and inserts user data acknowledgement message;
The HLR of step 1008, user upgrades acknowledgement message to the VLR home position of roaming place.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of late forward processing system, and comprise the attaching position register HLR 1102 of GMSC (gateway mobile switching center) GMSC 1101 and called subscriber, structure refers to Figure 11:
GMSC 1101, when making a call to called subscriber for calling subscriber, the HLR 1102 to called subscriber initiates first time route; When called subscriber cannot reply, obtain the failure cause that called subscriber cannot reply, and according to the HLR1102 initiation second time route of failure cause to called subscriber; The Redirection Information that the HLR 1102 receiving called subscriber returns, and according to the forwarding subscriber that the call proceeding that calling subscriber initiates by Redirection Information is specified to Redirection Information;
The HLR 1102 of called subscriber, for sending to GMSC 1101 by Redirection Information when second time route.
In one embodiment, refer to Figure 12, late forward processing system also comprises the Visited Mobile Switching Center VMSC 1201 of called subscriber:
The VMSC 1201 of called subscriber, during for finding that called subscriber cannot reply, sends release message to GMSC 1101, and indicating call failure, carries release cause in release message;
GMSC 1101, is further used for sending route request information according to release cause to the HLR 1002 of called subscriber, carries release cause in route request information.
In one embodiment, the HLR 1102 of called subscriber is further used for: obtain the visit address after called subscriber's renewal.
In one embodiment, refer to Figure 13, late forward processing system also comprises the VLR Visitor Location Register VLR 1301 of called subscriber:
The VLR 1301 of called subscriber, sends location update message for the HLR 1102 to called subscriber; And during the insertion user data requests message that the HLR 1102 receiving called subscriber sends, the HLR 1102 to called subscriber returns and inserts user data acknowledgement message;
The HLR 1102 of called subscriber, is further used for sending to the VLR 1301 of called subscriber inserting user data requests message, wherein, inserts in user data requests message and do not carry Redirection Information; Receive after inserting user data acknowledgement message, VLR 1301 home position to called subscriber upgrades acknowledgement message.
In one embodiment, GMSC, be further used for when calling user dials called subscriber, the HLR 1102 to called subscriber sends route request information; VMSC 1301 to called subscriber roaming place sends initialization address message;
The HLR 1102 of called subscriber, the VLR1201 be further used for called subscriber roaming place send the request PRN message that Provides Roaming Number; Route requests acknowledgement message is sent to GMSC 1101;
The VLR 1301 of called subscriber, is further used for sending to Provide Roaming Number to the HLR 1102 of called subscriber confirming PRN ACK message.
As can be seen from the above description, present invention achieves following technique effect:
In embodiments of the present invention, do not need the switch of called subscriber visited place to do any special processing, speech channel is directly continued calling subscriber and being forwarded between user, does not need the visited place VMSC through called subscriber roundabout, can traffic resource be saved.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. evening a forward processing method, it is characterized in that, comprising:
When calling subscriber makes a call to called subscriber, GMSC (gateway mobile switching center) GMSC initiates first time route to the attaching position register HLR of described called subscriber;
When described called subscriber cannot reply, described GMSC obtains the failure cause that described called subscriber cannot reply from release message, and according to the HLR initiation second time route of described failure cause to described called subscriber;
The Redirection Information that the HLR that described GMSC receives described called subscriber returns, and according to the forwarding subscriber that the call proceeding that described calling subscriber initiates by described Redirection Information is specified to Redirection Information.
2. method according to claim 1, is characterized in that, the failure cause that described called subscriber cannot reply comprises: unreachable, the described called subscriber busy of described called subscriber and described called subscriber's nonreply.
3. method according to claim 1, it is characterized in that, when described called subscriber cannot reply, described GMSC obtains the failure cause that described called subscriber cannot reply from release message, and according to the HLR initiation second time route of described failure cause to described called subscriber, comprising:
When the Visited Mobile Switching Center VMSC of described called subscriber finds that described called subscriber cannot reply, the VMSC of described called subscriber sends described release message to described GMSC, and indicating call failure, carries release cause in described release message;
Described GMSC, according to the HLR transmission route request information of described release cause to called subscriber, carries described release cause in described route request information.
4. method according to claim 3, is characterized in that, described release message comprises: ALERTING message or call progress message.
5. method according to claim 1, is characterized in that, when unreachable, the described called subscriber busy of described called subscriber or described called subscriber's nonreply, the VMSC of described called subscriber sends described release message to described GMSC.
6. method according to claim 1, is characterized in that, when described called subscriber is unreachable, do not carry forwarding data in the insertion user data requests message of the VLR transmission of described called subscriber, wherein, described forwarding data comprises transferred number.
7. the method according to any one of claim 1 to 6, is characterized in that, described GMSC comprises before obtaining the failure cause that described called subscriber cannot reply:
Called subscriber described in described calling user dials, described GMSC sends route request information to the HLR of described called subscriber;
The HLR of described called subscriber sends to the VLR of described called subscriber the request PRN message that Provides Roaming Number;
The VLR of described called subscriber sends to Provide Roaming Number to the HLR of described called subscriber and confirms PRN ACK message;
The HLR of described called subscriber sends route requests acknowledgement message to described GMSC;
Described GMSC sends initialization address message to the VMSC of described called subscriber.
8. the method according to any one of claim 1 to 6, it is characterized in that, HLR from GMSC to called subscriber initiate first time route after, before initiating second time route according to described failure cause to the HLR of described called subscriber, also comprise: the HLR of described called subscriber carries forward inquiry mark in first time route acknowledgement message.
9. evening a forward processing system, it is characterized in that, comprise the attaching position register HLR of GMSC (gateway mobile switching center) GMSC and called subscriber:
Described GMSC, when making a call to described called subscriber for calling subscriber, the HLR to described called subscriber initiates first time route; When described called subscriber cannot reply, from release message, obtain the failure cause that described called subscriber cannot reply, and according to the HLR initiation second time route of described failure cause to described called subscriber; The Redirection Information that the HLR receiving described called subscriber returns, and according to the forwarding subscriber that the call proceeding that described calling subscriber initiates by described Redirection Information is specified to Redirection Information;
The HLR of described called subscriber, for sending to described GMSC by described Redirection Information when second time route.
10. system according to claim 9, is characterized in that,
Also comprise the Visited Mobile Switching Center VMSC of described called subscriber: the VMSC of described called subscriber, during for finding that described called subscriber cannot reply, send described release message to described GMSC, indicating call failure, carries release cause in described release message;
Described GMSC, is further used for, according to the HLR transmission route request information of described release cause to called subscriber, carrying described release cause in described route request information.
11. systems according to any one of claim 9 to 10, is characterized in that,
Also comprise the VLR Visitor Location Register VLR of described called subscriber: described GMSC, be further used for described in described calling user dials during called subscriber, the HLR to described called subscriber sends route request information; VMSC to described called subscriber sends initialization address message;
The HLR of described called subscriber, the VLR be further used for described called subscriber send the request PRN message that Provides Roaming Number; Route requests acknowledgement message is sent to described GMSC;
The VLR of described called subscriber, is further used for sending to Provide Roaming Number to the HLR of described called subscriber confirming PRN ACK message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010531255.2A CN102469424B (en) | 2010-11-03 | 2010-11-03 | Method and system for processing later forwarding services |
| PCT/CN2011/076136 WO2012058932A1 (en) | 2010-11-03 | 2011-06-22 | Method and system for late forward processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010531255.2A CN102469424B (en) | 2010-11-03 | 2010-11-03 | Method and system for processing later forwarding services |
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| CN102469424A CN102469424A (en) | 2012-05-23 |
| CN102469424B true CN102469424B (en) | 2015-05-20 |
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| CN201010531255.2A Active CN102469424B (en) | 2010-11-03 | 2010-11-03 | Method and system for processing later forwarding services |
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| CN (1) | CN102469424B (en) |
| WO (1) | WO2012058932A1 (en) |
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| CN102045672B (en) * | 2010-12-01 | 2015-06-03 | 中兴通讯股份有限公司 | Method and system for treating before-night call forwarding of subscriber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076186A (en) * | 2006-05-19 | 2007-11-21 | 华为技术有限公司 | Method, network and apparatus for processing afterservice |
| CN101431738A (en) * | 2007-11-06 | 2009-05-13 | 华为技术有限公司 | Method, system and apparatus for implementing conditional call forwarding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8175622B2 (en) * | 2003-02-14 | 2012-05-08 | Roamware, Inc. | Method and system for keeping all phone numbers active while roaming with diverse operator subscriber identity modules |
| US20070030338A1 (en) * | 2005-08-04 | 2007-02-08 | Roamware Inc. | Video ringback tone |
| CN101662748A (en) * | 2008-08-29 | 2010-03-03 | 中兴通讯股份有限公司 | Method for forwarding calls |
| CN101742446A (en) * | 2008-11-24 | 2010-06-16 | 华为技术有限公司 | Call processing method, device and system |
| CN101841788B (en) * | 2010-06-12 | 2015-10-21 | 中兴通讯股份有限公司 | The methods, devices and systems of forwarded calls |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076186A (en) * | 2006-05-19 | 2007-11-21 | 华为技术有限公司 | Method, network and apparatus for processing afterservice |
| CN101431738A (en) * | 2007-11-06 | 2009-05-13 | 华为技术有限公司 | Method, system and apparatus for implementing conditional call forwarding |
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| Publication number | Publication date |
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| WO2012058932A1 (en) | 2012-05-10 |
| CN102469424A (en) | 2012-05-23 |
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