CN104754548B - A kind of international roaming route reselection method, equipment and system - Google Patents
A kind of international roaming route reselection method, equipment and system Download PDFInfo
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- CN104754548B CN104754548B CN201310746361.6A CN201310746361A CN104754548B CN 104754548 B CN104754548 B CN 104754548B CN 201310746361 A CN201310746361 A CN 201310746361A CN 104754548 B CN104754548 B CN 104754548B
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Abstract
The invention discloses a kind of international roaming route reselection method, equipment and systems.This method includes：ISTP receives the PRN message for not carrying special identifier, and when determining that the first called MS C belongs to the operator in Roaming Retry foreign countries operator list, increase Roaming Retry marks in PRN message, and the address information of ISC corresponding with the operator that the first called MS C is belonged to, and it is transmitted to the first called MS C；When ISC receives the route reselection message of the first called MS C transmissions, the link with caller MSC is kept, and discharges the link with the first called MS C, establishes the link with the second called MS C；When ISTP receives the PRN message for carrying special identifier, the special identifier in PRN message is deleted, and is transmitted to the corresponding second called MS C of the second called MS C ID carried in the PRN message.In the present invention, avoid in the case where the user of network of Roaming Retry is not supported to dial the scene of this network users for roaming into the external carrier network for supporting Roaming Retry, the upgrading of HLR all to the whole network and all MSC.
Description
Technical field
The present invention relates to a kind of field of communication technology more particularly to international roaming route reselection method, equipment and systems.
Background technology
In LTE（Long Term Evolution, Long Term Evolution）Networking initial stage, if there has been maturation in operator
GERAN（GSM（Global System For Mobile, global system for mobile communications）/EDGE（Enhanced Data Rates
For GSM Evolution, GSM enhancing data transfer rate evolution）Radio Access Network, GSM EDGE Radio Access Network
Network）/UTRAN（UMTS（Universal Mobile Telecommunications System, Universal Mobile Communication System）
Terrestrial Radio Access Network, UMTS Terrestrial radio access network）Network, for CS（Circuit
Switched, circuit switching）The protection of investment and LTE/EPC（Evolved Packet Core, evolution block core net）Portion
Administration's strategy, original CS domains voice scheme may be employed to provide voice service in operator, and LTE/EPC only handles data service
（Including IMS（IP Multimedia Subsystem, IP multimedia subsystem）Data service）.Based on this demand, 3GPP
（The3rd Generation Partnership Project, third generation cooperative partner program）Propose CS Fallback skills
UE under the covering of art, i.e. LTE（User Equipment, user equipment）It is switched to when needing and handling CS business complete in CS networks
Into business processing, the existing CS domains equipment of reuse is thus reached to provide traditional voice industry for the user in EPS networks
The purpose of business.
Using CS Fallback technologies, if the LTE TA residing for called subscriber（Tracking Area, tracking area）By
Different MSC（Mobile Switching Center, mobile switching centre）2G/3G LA（Location Area, position area）
Covering, network side are possible to not be this according to the optimization principles of cell reselection for the UE affiliated MSC of 2G/3G LA cells newly selected
The MSC of UE registrations, therefore cause UE that cannot choose and initiate Paging（Paging）The MSC of message, causes call failure.
The MSC of Paging message is initiated to solve the problems, such as that UE cannot choose, defined in 3GPP TS23.018
“Mobile Terminating Roaming Retry Call”（Hereinafter referred to as Roaming Retry）Flow carries out correlation
Processing.Its main thought is when UE has selected new MSC and sends LAU（Location Area Update, location area updating）
After request, original service MSC（Send the MSC of Paging message）The Cancel Location message of HLR transmissions can be received,
Original service MSC requirement callers MSC carries out " Roaming Retry " at this time, removes original speech channel, re-establishes calling,
It is routed to UE and selects new MSC, so as to complete subsequent called flow and CS business.
The external operator in part is using Roaming Retry schemes at present, but China Mobile's Home Network is without using the program, when
China Mobile user from the country dial roam into this network users using the external carrier network of said program when, for cooperation should
Operator realizes " Roaming Retry " scheme, it is necessary to which MSC all to the whole network and HLR are transformed, and it is limited to be applicable in scene.
In the implementation of the present invention, inventor has found to have at least the following problems in the prior art：
It is called roam into the external carrier network of supports " Roaming Retry " when, to coordinate operator realization
" Roaming Retry " scheme supports " Roaming Retry " work(, it is necessary to transform the whole network all HLR and all MSC upgrading
Can, network rebuilding cost is too big.
The content of the invention
The present invention provides a kind of international roaming route reselection method, equipment and system, to avoid owning the whole network
On the premise of the upgrading of HLR and all MSC, international roaming route reselection is realized.
In order to reach object above, an embodiment of the present invention provides a kind of international roaming route reselection method, including：
When international signalling transfer point ISTP receives the PRN message that called attaching position register HLR sends, and determine should
When not carrying special identifier in PRN message, the ISTP is inquired about according to the first called MS C ID carried in the PRN message
Preconfigured Roaming Retry foreign countries operator list, and work as and determine that the first called MS C belongs to the operation in the list
Shang Shi increases Roaming Retry marks and the operator belonged to the first called MS C in the PRN message
The address information of corresponding international gateway ISC, and it is transmitted to the first called MS C；
When the ISC receives the route reselection message that the first called MS C is sent, keep between caller MSC
Link, and discharge and the first called MS C between link, establish and the second called MS C between link；Its
In, the ISC is when establishing the link between the second called MS C, to the carrying special identifier of called HLR transmission
SRI message so that the called HLR by the special identifier carrying ISTP is passed through in PRN message；
When the ISTP receives the PRN message that the called HLR sends, and determine to carry in the PRN message described
During special identifier, the ISTP deletes the special identifier in the PRN message, and is transmitted to second carried in the PRN message
The corresponding second called MS C of called MS C ID.
The embodiment of the present invention additionally provides a kind of international signalling transfer point ISTP, including：
Determining module, for working as the PRN message that the ISTP receives called attaching position register HLR and sends, and really
When not carrying special identifier in the fixed PRN message, inquired about according to the first called MS C ID carried in the PRN message advance
The Roaming Retry foreign countries operator list of configuration, to determine whether the first called MS C belongs to the fortune in the list
Seek business；
First forwarding module, for when the first called MS C belongs to the operator in the list, in the PRN
Increase Roaming Retry marks and international critical point corresponding with the operator that the first called MS C is belonged in message
The address information of office ISC, and it is transmitted to the first called MS C；
Second forwarding module for working as the PRN message that the ISTP receives the called HLR and sends, and determines the PRN
When the special identifier is carried in message, the special identifier in the PRN message is deleted, and is transmitted in the PRN message and takes
The corresponding second called MS C of the second called MS C ID of band；Wherein, the special identifier is to receive institute by the called HLR
After the SRI message for stating the carrying special identifier of ISC transmissions, carry and pass through the ISTP's in PRN message；It is described to carry
The SRI message of special identifier is that the route reselection message of the first called MS C transmissions is received by the ISC, is kept and main
The link between MSC is, and after the link between release and the first called MS C, is established between the second called MS C
Link when to the called HLR send.
The embodiment of the present invention also provides a kind of international roaming route reselection system, including：
International signalling transfer point ISTP, for working as the PRN message for receiving called attaching position register HLR and sending, and
When determining not carrying special identifier in the PRN message, inquired about according to the first called MS C ID carried in the PRN message pre-
The Roaming Retry foreign countries operator list first configured, and work as and determine that the first called MS C belongs to the operator in the list
When, increase Roaming Retry marks and the operator pair belonged to the first called MS C in the PRN message
The address information of the international gateway ISC answered, and it is transmitted to the first called MS C；As the PRN for receiving the called HLR transmission
Message, and determine in the PRN message when carrying the special identifier, to delete the special identifier in the PRN message, and forward
To the corresponding second called MS C of the second called MS C ID carried in the PRN message；
ISC, for when receiving the route reselection message that the first called MS C is sent, keeping between caller MSC
Link, and discharge and the first called MS C between link, establish and the second called MS C between link；Its
In, the ISC is when establishing the link between the second called MS C, to the carrying special identifier of called HLR transmission
SRI so that the called HLR by the special identifier carrying ISTP is passed through in PRN message.
In the above embodiment of the present invention, when ISTP receive HLR transmission PRN message, and determine the PRN message in do not take
During with special identifier, which inquires about preconfigured Roaming according to the first called MS C ID carried in the PRN message
Retry foreign countries operator list, and when definite first called MS C belongs to the operator in the list, in the PRN message
Increase Roaming Retry marks and the address information of ISC corresponding with the operator that first called MS C is belonged to, and
It is transmitted to the first called MS C；When ISC receive the first called MS C transmission route reselection message when, keep with caller MSC it
Between link, and discharge and the first called MS C between link, establish and the second called MS C between link；Wherein, ISC exists
When establishing the link between the second called MS C, the SRI message of the carrying special identifier sent to called HLR, so that called
Special identifier carrying is passed through ISTP by HLR in PRN message；When ISTP receive called HLR transmission PRN message, and really
When carrying special identifier in the fixed PRN message, ISTP deletes the special identifier in PRN message, and is transmitted in the PRN message
The corresponding second called MS C of the second called MS C ID carried, avoid the user in the network for not supporting Roaming Retry
Dial under the scene of this network users for roaming into the external carrier network for supporting Roaming Retry, HLRs all to the whole network with
And the upgrading of all MSC.
Description of the drawings
Fig. 1 is a kind of flow diagram of international roaming route reselection method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of international roaming route reselection method provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of ISTP provided in an embodiment of the present invention；
Fig. 4 is a kind of flow diagram of international roaming route reselection system provided in an embodiment of the present invention.
Specific embodiment
Problem present in for the above-mentioned prior art, an embodiment of the present invention provides a kind of international roaming route reselections
Technical solution.In the technical scheme, when ISTP receives the PRN of called HLR transmission（Provide Roaming Number,
It Provides Roaming Number）During message, ISTP judges whether carry special identifier in the PRN message；If judging result is no, ISTP
Preconfigured Roaming Retry foreign countries operator list is inquired about according to the first called MS C ID carried in the PRN message,
And when definite first called MS C belongs to the operator in the list, increase Roaming Retry marks in the PRN message
Knowledge and the address information of ISC corresponding with the operator that the first called MS C is belonged to, and it is called to be transmitted to first
MSC；If the determination result is YES, ISTP deletes the special identifier in the PRN message, and is transmitted to the second called MS C.
Wherein, when ISC receives the route reselection message of the first called MS C transmissions, the chain between caller MSC is kept
Road, and the link between the first called MS C is discharged, establish the link between the second called MS C；ISC is being built
When founding the link between the second called MS C, the SRI message of the carrying special identifier sent to called HLR, so that called HLR
Special identifier carrying is passed through into the ISTP in PRN message.
Wherein, the above-mentioned PRN message for not carrying special identifier is that the SRI message of caller MSC transmissions is received by called HLR
It sends afterwards.
In embodiments of the present invention, by ISTP configuration Roaming Retry foreign countries operator list（Support " Roaming
The external operator list of Retry "）, dialed in the user for the network for not supporting Roaming Retry and roam into support
During this network users of the external carrier network of Roaming Retry, MTRR marks are carried instead of the whole network HLR and MSC（I.e.
Roaming Retry are identified）, while the address of ISC notified to give called MS C；When called MS C triggers MTRR flows, by ISC
The recall to the UE new MSC newly selected is initiated instead of caller MSC, so as to avoid HLR all to the whole network and all MSC
Upgrading.
Below in conjunction with the attached drawing in the application, clear, complete description is carried out to the technical solution in the application, is shown
So, described embodiment is the part of the embodiment of the application, instead of all the embodiments.Based on the implementation in the application
Example, those of ordinary skill in the art's all other embodiments obtained on the premise of creative work is not made all belong to
In the scope of the application protection.
As shown in Figure 1, for a kind of flow diagram of international roaming route reselection method provided in an embodiment of the present invention, it can
To comprise the following steps：
Step 101, ISTP receive the PRN message that called HLR is sent.
Step 102, ISTP judge whether carry special identifier in the PRN message.If judging result is no, step is gone to
Rapid 103；If the determination result is YES, then step 104 is gone to.
Specifically, international roaming goes out user when doing called, called routing inquiry signaling can pass through ISTP；Meanwhile domestic use
When family dials international roaming and goes out user, speech channel can pass through ISC.In view of in called flow and existing standard Roaming Retry
In flow, ISTP and ISC have ready conditions and participate in flow, and the quantity of ISTP and ISC is far smaller than the quantity of country MSC and HLR, because
This, the present invention proposes a kind of route reselection method of ISC and ISTP cooperations, by ISC and ISTP HLR and MSC is replaced to realize
Roaming Retry flows.
In embodiments of the present invention, ISTP is pre-configured with Roaming Retry foreign countries operator list, and is configured at list
In each external operator's intercommunication ISC addresses.ISTP sentences first when receiving called HLR and being sent to external PRN message
Whether special identifier is carried in the PRN message of breaking（The special identifier is used to show the PRN message for second in current process
PRN message, need not carry out Roaming Retry inquiries）.
If not carrying special identifier in the PRN message, ISTP determines that the PRN message is to receive caller by called HLR
It is sent after the SRI message that MSC is sent, then ISTP determines called MS C according to the called MS C ID carried in the PRN message（The
The MSC of the former registration of one MSC, i.e. called terminal）Whether operator in the list is belonged to, if（I.e. the first called MS C is returned
The operator of category is operator of Roaming Retry foreign countries）, then ISTP increase in the PRN message Roaming Retry mark
Knowledge and the address information of ISC corresponding with the operator that the first called MS C is belonged to, and the first called MS C is transmitted to,
When first called MS C triggers Roaming Retry flows（When ISC receives the route reselection message of the first called MS C transmissions）,
Original call link of caller MSC is remained to by ISC, is terminated to the call link of the first called MS C, is initiated new to called terminal
The MSC of selection（Second called MS C, i.e., the MSC that called terminal newly registers）Recall（I.e. establish with the second called MS C it
Between link）；If not（The operator that i.e. the first called MS C is belonged to is not operator of Roaming Retry foreign countries）, then ISTP
The PRN message is directly transmitted to the first called MS C.
Wherein, ISC sends to called HLR when establishing the link between the second called MS C and carries special identifier
SRI message, so that special identifier carrying is passed through ISTP by called HLR in PRN message；When ISTP receives PRN message,
And when determining to carry special identifier in the PRN message, the special identifier in the PRN message is deleted, and according in the PRB message
The PRB message is transmitted to corresponding called MS C by the called MS C ID of carrying（New MSC after gravity treatment）.
Wherein, after called HLR receives the SRI message of ISC transmissions, Roaming Retry marks are not carried in the SRI message
Know, carry special identifier, called HLR, without processing, passes through ISTP, for leading to the special identifier in PRN message
Know that the ISTP PRN messages for the Article 2 PRN message in current process, need not carry out Roaming Retry inquiries.
Wherein, the special identifier carried in PRN message only needs to ensure that HLR carries out transparent transmission to the special identifier, and ISTP connects
After receiving the PRN message for carrying the special identifier, the special identifier can be identified, but the special identifier is not carried out in addition to deleting
Other operations, be specially which parameter can be selected in the idle parameter according to specified in actual conditions from agreement.
Step 103, ISTP inquire about preconfigured Roaming according to the called MS C ID carried in the PRN message
Retry foreign countries operator list, and when definite called MS C belongs to the operator in the list, increase in the PRN message
Roaming Retry are identified and the address information of ISC corresponding with the operator of called MS C ownership, and are transmitted to called
MSC（First called MS C）.
It wherein, can be according to existing after the first called MS C receives the PRN message for carrying Roaming Retry marks
Processing mode in the Roaming Retry flows of standard is handled.
Step 104, ISTP delete the special identifier in the PRN message, and be transmitted to carried in the PRN message it is called
The corresponding called MS C of MSC ID（Second called MS C）.
Specifically, after the second called MS C receives the PRN message for not carrying Roaming Retry marks, it can be according to existing
There is the processing mode in the Roaming Retry flows of standard to be handled.
The technical solution that embodiment provides for a better understanding of the present invention, with reference to specific application scenarios to this hair
The technical solution that bright embodiment provides is described below in greater detail.
In this embodiment, the foreign countries for supporting Roaming Retry are roamed into using domestic user as calling user dials
It is described exemplified by this network users of carrier network.
As shown in Fig. 2, for a kind of flow diagram of international roaming route reselection method provided in an embodiment of the present invention, it can
To comprise the following steps：
Step 201, caller GMSC/VMSC initiate SRI message to called ownership HLR.
Step 202, called ownership HLR receive the SRI message of caller GMSC/VMSC transmissions, are sent to external old MSC
PRN message.
Wherein, it is route according to international signaling, which is sent to ISTP nodes, is transferred by ISTP.
Step 203, ISTP receive PRN message, and the outward transport of " RoamingRetry " state is inquired about according to the MSC ID of called subscriber
Business's list is sought, when finding that MSC ID belong to the operator in list, is found with the ISC of operator of the foreign countries intercommunication
Location.
Step 204, ISTP forward PRN message to external operator, carry Roaming Retry marks wherein, and take
MSC ID with intercommunication ISC.
Step 205, foreign countries old MSC send the MSRN of PRN ACK messages carrying old MSC to HLR.
Step 206, HLR send SRI ACK messages to GMSC/VMSC.
After step 207, caller GMSC/VMSC obtain the MSRN of called old MSC, send IAM message and turned by intercommunication ISC
Issue called old MSC.
Step 208, called old MSC are sent to called terminal by LTE network and paged（Paging）Message.
Step 209, called UE carry out CSFB after receiving paging, gravity treatment return 2/3G selected new MSC (new MSC) and to
New MSC send position updating request；Location updating has occurred in the called ownership HLR called UEs of new MSC notices.
Step 210, called ownership HLR send Cancel Location message to old MSC.
Step 211, old MSC send RCH message to ISC, it is desirable that main according to the MSC ID of the ISC received in PRN message
Side is made to carry out " Roaming Retry ".
Step 212, RCH message are transmitted to ISC by ISTP, after ISC receives RCH, send REL message release ISC to old
The call link of MSC, while keep original call link of ISC and caller GMSC/VMSC.
Step 213, ISC send SRI message to called ownership HLR again, and the routing of new MSC is obtained by HLR；It should
" Roaming Retry " mark is not carried in SRI message；Special identifier is carried in the SRI message（HLR to the mark without
Processing, passes through ISTP in PRN message, and it is Article 2 PRN to be only used for ISC notice ISTP PRN messages, without
" Roaming Retry " is inquired about）.
Step 214, HLR are waited completes location updating, return position update response " Update Location with new MSC
After Ack ", PRN message is sent to new MSC；Special identifier in the PRN message transparent transmission SRI message（By ISC in SRI message
It carries, HLR, without processing, ISTP is passed through in PRN message, ISC is only used for and notifies that the ISTP PRN messages are to the mark
Article 2 PRN is inquired about without " Roaming Retry "）, transferred by ISTP.
Step 215, ISTP receive PRN message, confirm that the PRN that the PRN message is initiated for second disappears according to special identifier
Breath is inquired about without " Roaming Retry ", is removed and is forwarded PRN message to external operator after special identifier.
After step 216, HLR receive the MSRN of PRN ACK messages acquisition new MSC of new MSC transmissions, sent to ISC
SRI ACK messages.
After step 217, ISC obtain the MSRN of new MSC, carry out " Roaming Retry " and be sent to IAM message
new MSC。
After step 218, new MSC receive IAM message, start subsequent voice calls stream after terminal UE completes location updating
Journey.
As described above as can be seen that in embodiments of the present invention, it is only necessary to which ISC and ISTP are transformed, you can
Realize that the user in the network for not supporting Roaming Retry dials the user for roaming into and supporting Roaming Retry networks.Its
In, in the embodiment of the present invention, the transformation of ISC and ISTP is mainly included：
ISC：It supports MTRR, after receiving RCH, sends the call link of REL message release ISC to old MSC, keep simultaneously
Original call link of ISC and caller GMSC/VMSC;Again routing information request is initiated to called ownership HLR（SRI）, pass through
HLR obtains the routing of new MSC；Special identifier is carried in SRI message, for the PRN transmitted by ISTP HLR to be notified to disappear
It ceases for Article 2 PRN, is inquired about without " Roaming Retry ".
ISTP：" Roaming Retry " foreign countries operator list is supported in configuration, and is configured and each external operation in list
The ISC addresses of business's intercommunication；Special identifier in PRN is judged, as it identifies the PRN as first PRN（It is exchanged by caller
Machine is initiated SRI and is triggered）, " Roaming Retry " external operator list is inquired about, if MSC ID belong to the list, is being forwarded
PRN message in carry MTRR mark and corresponding intercommunication ISC MSC ID（The address of ISC is notified to external MSC）；Such as it
The PRN is identified as Article 2 PRN（Calling switchboard is replaced to initiate SRI by ISC and triggered）, normally forwarded after removing special identifier
PRN message.
By above description as can be seen that in embodiments of the present invention, when ISTP receives the PRN message of HLR transmissions, and
When determining not carrying special identifier in the PRN message, which looks into according to the first called MS C ID carried in the PRN message
Preconfigured Roaming Retry foreign countries operator list is ask, and the fortune in the list is belonged to as definite first called MS C
When seeking business, increase Roaming Retry marks and the operator pair belonged to first called MS C in the PRN message
The address information of the ISC answered, and it is transmitted to the first called MS C；When the route reselection that ISC receives the first called MS C transmissions disappears
During breath, the link between caller MSC is kept, and discharges the link between the first called MS C, is established and the second called MS C
Between link；Wherein, ISC is when establishing the link between the second called MS C, to the special mark of carrying of called HLR transmission
The SRI message of knowledge, so that special identifier carrying is passed through ISTP by called HLR in PRN message；When ISTP receive it is called
The PRN message that HLR is sent, and determine that in the PRN message when carrying special identifier, ISTP deletes the special mark in PRN message
Know, and be transmitted to the corresponding second called MS C of the second called MS C ID carried in the PRN message, avoid and do not supporting
The user of the network of Roaming Retry dials the Home Network use for roaming into the external carrier network for supporting Roaming Retry
Under the scene at family, the upgrading of HLR all to the whole network and all MSC.
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of ISTP, can be applied to above method reality
Apply example.
As shown in figure 3, for a kind of structure diagram of ISTP provided in an embodiment of the present invention, can include：
Determining module 31, for working as the PRN message that the ISTP receives called attaching position register HLR and sends, and
When determining not carrying special identifier in the PRN message, inquired about according to the first called MS C ID carried in the PRN message pre-
The Roaming Retry foreign countries operator list first configured, to determine whether the first called MS C is belonged in the list
Operator；
First forwarding module 32, for when the first called MS C belongs to the operator in the list, described
Increase Roaming Retry marks and the world corresponding with the operator that the first called MS C is belonged in PRN message
The address information of gateway exchange ISC, and it is transmitted to the first called MS C；
Second forwarding module 33 for working as the PRN message that the ISTP receives the called HLR and sends, and determines to be somebody's turn to do
When the special identifier is carried in PRN message, the special identifier in the PRN message is deleted, and is transmitted in the PRN message
The corresponding second called MS C of the second called MS C ID carried；Wherein, the special identifier is received by the called HLR
After the SRI message for the carrying special identifier that the ISC is sent, carry and pass through the ISTP's in PRN message；The carrying
The SRI message of special identifier is to receive the route reselection message that the first called MS C sends by the ISC, keep with
Link between caller MSC, and discharge and the first called MS C between link after, establish with the second called MS C it
Between link when to the called HLR send.
Wherein, ISTP provided in an embodiment of the present invention can also include：
Configuration module 34 for configuring the Roaming Retry foreign countries operator list, and configures the Roaming
Operator list Zhong Ge operators of Retry foreign countries and the correspondence of ISC.
Wherein, first forwarding module 32 is additionally operable to, when the determining module determines that the first called MS C does not belong to
During operator in the Roaming Retry foreign countries operator list, the PRN message is directly transmitted to described first
Called MS C.
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of international roaming route reselection system, can be with
Applied to above method embodiment.
As shown in figure 4, for a kind of structure diagram of international roaming route reselection system provided in an embodiment of the present invention, it can
To include：
International signalling transfer point ISTP41, for working as the PRN message for receiving called attaching position register HLR and sending,
And when determining not carrying special identifier in the PRN message, inquired about according to the first called MS C ID carried in the PRN message
Preconfigured Roaming Retry foreign countries operator list, and work as and determine that the first called MS C belongs to the operation in the list
Shang Shi increases Roaming Retry marks and the operator belonged to the first called MS C in the PRN message
The address information of corresponding international gateway ISC, and it is transmitted to the first called MS C；When receiving what the called HLR was sent
PRN message, and determine in the PRN message when carrying the special identifier, to delete the special identifier in the PRN message, and
It is transmitted to the corresponding second called MS C of the second called MS C ID carried in the PRN message；
ISC42, for when receiving the route reselection message that the first called MS C is sent, keep with caller MSC it
Between link, and discharge and the first called MS C between link, establish and the second called MS C between link；Its
In, the ISC is when establishing the link between the second called MS C, to the carrying special identifier of called HLR transmission
SRI so that the called HLR by the special identifier carrying ISTP is passed through in PRN message.
Wherein, the ISTP41 is additionally operable to, and configures the Roaming Retry foreign countries operator list, and described in configuration
Operator list Zhong Ge operators of Roaming Retry foreign countries and the correspondence of ISC.
Wherein, the ISTP41 is additionally operable to, advance when being inquired about according to the first called MS CID carried in the PRN message
The Roaming Retry foreign countries operator list of configuration, and determine that the first called MS C does not belong to the operation in the list
The PRN message is directly transmitted to the first called MS C by Shang Shi.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but the former is more in many cases
Good embodiment.Based on such understanding, what technical scheme substantially in other words contributed to the prior art
Part can be embodied in the form of software product, which is stored in a storage medium, if including
Dry instruction is used so that a station terminal equipment（Can be mobile phone, personal computer, server or the network equipment etc.）Perform sheet
Invent the method described in each embodiment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (10)
- A kind of 1. international roaming route reselection method, which is characterized in that including：When international signalling transfer point ISTP receives the PRN message that Provides Roaming Number that called attaching position register HLR sends, And when determining not carrying special identifier in the PRN message, the ISTP is moved according to first carried in the PRN message is called Dynamic switching centre MSC ID inquire about preconfigured Roaming Retry foreign countries operator list, and as definite first called MS C When belonging to the operator in the list, increase Roaming Retry mark in the PRN message and with described first The address information for the corresponding international gateway ISC of operator that called MS C is belonged to, and it is transmitted to the first called MS C；When the ISC receives the route reselection message that the first called MS C is sent, the chain between caller MSC is kept Road, and the link between the first called MS C is discharged, establish the link between the second called MS C；Wherein, the ISC When establishing the link between the second called MS C, the SRI message of the carrying special identifier sent to the called HLR, So that special identifier carrying is passed through the ISTP by the called HLR in PRN message；When the ISTP receives the PRN message that the called HLR sends, and determine to carry in the PRN message it is described special During mark, the ISTP deletes the special identifier in the PRN message, and it is called to be transmitted to second carried in the PRN message The corresponding second called MS C of MSC ID.
- 2. the method as described in claim 1, which is characterized in that this method further includes：The ISTP configures the Roaming Retry foreign countries operator list, and configures the RoamingRetry states outward transport Seek business list Zhong Ge operators and the correspondence of ISC.
- 3. the method as described in claim 1, which is characterized in that this method further includes：When the ISTP inquires about preconfigured Roaming according to the first called MS C ID carried in the PRN message Retry foreign countries operator list, and the first called MS C is determined when not belonging to the operator in the list, the ISTP The PRN message is directly transmitted to the first called MS C.
- 4. the method as described in claim 1, which is characterized in that the PRN message for not carrying special identifier is by the quilt HLR is made to be sent after receiving the routing information request SRI message of caller MSC transmissions.
- 5. a kind of international signalling transfer point ISTP, which is characterized in that including：Determining module, the PRN that Provides Roaming Number that called attaching position register HLR transmissions are received for working as the ISTP disappear When ceasing, and determining not carrying special identifier in the PRN message, according to the called mobile friendship of first carried in the PRN message Switching center9 MSC ID inquire about preconfigured Roaming Retry foreign countries operator list, are with the definite first called MS C The no operator belonged in the list；First forwarding module, for when the first called MS C belongs to the operator in the list, in the PRN message Middle increase Roaming Retry marks and international gateway corresponding with the operator that the first called MS C is belonged to The address information of ISC, and it is transmitted to the first called MS C；Second forwarding module for working as the PRN message that the ISTP receives the called HLR and sends, and determines the PRN message In when carrying the special identifier, delete the special identifier in the PRN message, and be transmitted to what is carried in the PRN message The corresponding second called MS C of second called MS C ID；Wherein, the special identifier is to receive the ISC by the called HLR After the SRI message of the carrying special identifier of transmission, carry and pass through the ISTP's in PRN message；It is described carry it is special The SRI message of mark is that the route reselection message of the first called MS C transmissions is received by the ISC, is kept and caller MSC Between link, and discharge and the first called MS C between link after, establish and the second called MS C between chain What called HLR described in Lu Shixiang was sent.
- 6. ISTP as claimed in claim 5, which is characterized in that further include：Configuration module for configuring the Roaming Retry foreign countries operator list, and configures the Roaming Retry External operator list Zhong Ge operators and the correspondence of ISC.
- 7. ISTP as claimed in claim 5, which is characterized in thatFirst forwarding module is additionally operable to, and when the determining module, to determine that the first called MS C is not belonged to described During operator in Roaming Retry foreign countries operator list, the PRN message is directly transmitted to described first and is called MSC。
- 8. a kind of international roaming route reselection system, which is characterized in that including：International signalling transfer point ISTP, for as the PRN that Provides Roaming Number for receiving called attaching position register HLR transmissions Message, and determine in the PRN message when not carrying special identifier, according to the called movement of first carried in the PRN message Switching centre MSC ID inquire about preconfigured Roaming Retry foreign countries operator list, and when definite first called MS C returns When belonging to the operator in the list, increase in the PRN message Roaming Retry mark and with first quilt The address information of the corresponding international gateway ISC of the operator that MSC is belonged to is, and is transmitted to the first called MS C；When receiving The PRN message that the called HLR is sent, and when determining to carry the special identifier in the PRN message, delete the PRN and disappear Special identifier in breath, and it is transmitted to the corresponding second called MS C of the second called MS C ID carried in the PRN message；ISC, for when receiving the route reselection message that the first called MS C is sent, keeping the chain between caller MSC Road, and the link between the first called MS C is discharged, establish the link between the second called MS C；Wherein, institute ISC is stated when establishing the link between the second called MS C, the carrying special identifier sent to the called HLR SRI, so that special identifier carrying is passed through the ISTP by the called HLR in PRN message.
- 9. system as claimed in claim 8, which is characterized in thatThe ISTP is additionally operable to, and is configured the Roaming Retry foreign countries operator list, and is configured the Roaming Operator list Zhong Ge operators of Retry foreign countries and the correspondence of ISC.
- 10. system as claimed in claim 8, which is characterized in thatThe ISTP is additionally operable to, when preconfigured according to the first called MS C ID inquiries carried in the PRN message Roaming Retry foreign countries operator list, and the first called MS C is determined when not belonging to the operator in the list, The PRN message is directly transmitted to the first called MS C.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287293A (en) * | 2008-05-28 | 2008-10-15 | 中兴通讯股份有限公司 | Retrial method of roaming under pre-page mode |
| CN101771998A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Roaming communication method, device and system |
| WO2012045375A1 (en) * | 2010-10-05 | 2012-04-12 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for terminating call set up in a csfb situation |
| CN102550055A (en) * | 2011-12-26 | 2012-07-04 | 华为技术有限公司 | Method, device and system of called retrieve |
| CN103369617A (en) * | 2012-03-30 | 2013-10-23 | 中国移动通信集团公司 | Method and system for route reselection, international gateway and home location register |
-
2013
- 2013-12-30 CN CN201310746361.6A patent/CN104754548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287293A (en) * | 2008-05-28 | 2008-10-15 | 中兴通讯股份有限公司 | Retrial method of roaming under pre-page mode |
| CN101771998A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Roaming communication method, device and system |
| WO2012045375A1 (en) * | 2010-10-05 | 2012-04-12 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for terminating call set up in a csfb situation |
| CN102550055A (en) * | 2011-12-26 | 2012-07-04 | 华为技术有限公司 | Method, device and system of called retrieve |
| CN103369617A (en) * | 2012-03-30 | 2013-10-23 | 中国移动通信集团公司 | Method and system for route reselection, international gateway and home location register |
Non-Patent Citations (1)
| Title |
|---|
| Technical Specification Group Core Network and Terminals;;3rd Generation Partnership Project;《3GPP TS 23.018 V11.2.0 (Release 11)》;20120322;正文第18-20页 * |
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