CN111935822B - Pre-paging method, device and system - Google Patents
Pre-paging method, device and system Download PDFInfo
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- CN111935822B CN111935822B CN202010768919.0A CN202010768919A CN111935822B CN 111935822 B CN111935822 B CN 111935822B CN 202010768919 A CN202010768919 A CN 202010768919A CN 111935822 B CN111935822 B CN 111935822B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The invention provides a pre-paging method, a device and a system, belongs to the technical field of communication, and can solve the problem that the existing pre-paging process is long. The invention discloses a pre-paging method, which comprises the following steps: the calling MSC sends an SRI request to the called HLR; the called HLR sends a roaming number request to the called MSC according to the SRI request; the called MSC sends a paging request to the called mobile terminal; meanwhile, the called MSC requests the called HLR to return a roaming number according to the roaming number; after receiving the roaming number, the called HLR returns the roaming number to the calling MSSC; after receiving the roaming number, the calling MSC sends a call establishment request to the called MSC; the called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends the call progress information to the calling MSC according to the receiving condition of the paging response information.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a pre-paging method, device and system.
Background
At present, in the CSFB call implementation process, there is a pre-paging method, and the process of the method is that when a mobile terminal has an incoming call, a calling MSC sends a request for obtaining routing information SRI to an HLR to which the mobile terminal belongs, and then the HLR sends a request for obtaining a roaming number to the MSC to which the mobile terminal belongs according to the SRI message, and after receiving paging response information, the MSC to which the mobile terminal belongs returns a roaming number to the HLR to which the mobile terminal belongs, and the HLR to which the mobile terminal belongs returns the roaming number to the calling MSC, so that the calling MSC initiates a call establishment request to the MSC to which the mobile terminal belongs, thereby establishing a call.
The inventor finds that although the pre-paging process speeds up and shortens the call setup time to some extent, the whole call process is still long, and the user perception is not good.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a pre-paging method capable of shortening the duration of a call flow.
The technical scheme adopted for solving the technical problem of the invention is a pre-paging method, which comprises the following steps:
the calling MSC sends an SRI request to the called HLR;
the called HLR sends a roaming number request to the called MSC according to the SRI request;
the called MSC sends a paging request to the called mobile terminal; meanwhile, the called MSC requests the called HLR to return a roaming number according to the roaming number;
after receiving the roaming number, the called HLR returns the roaming number to the calling MSSC;
after receiving the roaming number, the calling MSC sends a call establishment request to the called MSC;
the called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends the call progress information to the calling MSC according to the receiving condition of the paging response information.
Optionally, after sending the paging request to the called mobile terminal, the method further includes a step of the called mobile terminal dropping back to the cell, and after the called mobile terminal dropping back to the cell, the called mobile terminal sends paging response information to the called MSC.
Optionally, the step of the called mobile terminal dropping back to the cell includes:
the called mobile terminal receives a paging request sent by the MME and sends an extended service request to the MME;
the MME instructs the eNB to send the configuration information of the fallback cell to the called mobile terminal;
the called mobile terminal receives the configuration information of the fallback cell, measures the configured fallback cell and sends a measurement result to the eNB;
the eNB determines a fallback cell according to the measurement result and sends fallback cell information to the called mobile terminal;
and the called mobile terminal falls back to the corresponding falling cell according to the falling cell information.
Further optionally, after the eNB determines the fallback cell according to the measurement result, the method further includes:
the eNB sends information of a fallback cell to the called MSC;
and the called MSC indicates the corresponding base station to do the work of building the wireless signaling bearer in advance according to the received information of the fallback cell.
Optionally, the called mobile terminal includes a 4G multimode card.
Further optionally, before sending the paging request to the called mobile terminal, the method further includes: and the called mobile terminal performs joint attachment.
Further optionally, the step of performing the joint attachment by the called mobile terminal includes:
the called mobile terminal sends an attachment request message to the MME;
MME sends SGs location update request message to corresponding VLR; the SGs location update request message comprises LAI, IMSI, MME information and location update type of the called mobile terminal;
VLR stores the MME information and establishes SGs association with the called mobile terminal under MME;
the VLR initiates a called mobile terminal position updating flow to the HLR according to the LAI and the IMSI of the called mobile terminal, and returns confirmation information to the MME after the updating is completed;
and the MME sends an attachment completion message to the called mobile terminal to complete the joint attachment of the called mobile terminal.
The technical scheme adopted for solving the technical problem of the invention is a pre-paging device, which comprises:
the calling MSC is used for sending an SRI request to the called HLR; the mobile terminal is also used for sending a call establishment request to the called MSC after receiving the roaming number;
the called HLR is used for receiving the SRI request sent by the calling MSC and sending a roaming number request to the called MSC according to the SRI request;
a called MSC for sending a paging request to a called mobile terminal and simultaneously returning a roaming number to a called HLR according to the roaming number request; the called MSC is also used for receiving a call establishment request sent by the calling MSC and paging response information sent by the called mobile terminal, and sending call progress information to the calling MSC according to the receiving condition of the paging response information.
Optionally, the pre-paging device further includes:
MME, used for sending paging request to called mobile terminal; the system is also used for receiving an extended service request sent by the called mobile terminal;
the eNB is used for sending the configuration information of the fallback cell to the called mobile terminal under the instruction of the MME; the mobile terminal is also used for receiving the measurement result sent by the called mobile terminal; and determining a fallback cell according to the measurement result, and sending fallback cell information to the called mobile terminal so that the called mobile terminal can fall back to the corresponding fallback cell according to the fallback cell information.
The technical scheme adopted for solving the technical problem of the invention is a pre-paging system which comprises any one of the pre-paging devices.
Drawings
FIG. 1 is a flow chart of a pre-paging method according to an embodiment of the present invention;
fig. 2 is a block diagram of a pre-paging device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
the embodiment provides a pre-paging method, which includes:
s11, the calling MSC sends an SRI request to the called HLR.
S12, the called HLR sends out request of roaming number to the called MSC according to the SRI request.
S13, the called MSC sends a paging request to the called mobile terminal. Meanwhile, the called MSC returns the roaming number to the called HLR according to the roaming number request.
S14, after receiving the roaming number, the called HLR returns the roaming number to the calling MSSC.
S15, after receiving the roaming number, the calling MSC sends a call establishment request to the called MSC.
S16, the called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends the call progress information to the calling MSC according to the receiving condition of the paging response information.
In the pre-paging method provided in this embodiment, the called MSC sends the paging request to the called mobile terminal and also returns the roaming number to the called HLR according to the roaming number request.
Example 2:
as shown in fig. 1, the present embodiment provides a pre-paging method. Optionally, in this embodiment, the called mobile terminal includes a 4G multimode card. Optionally, before participating in pre-paging or after the (called) mobile terminal is powered on, the method includes:
and S20, the called mobile terminal performs joint attachment.
Namely, the step is to carry out the joint attachment of the 4G multi-mode card. The joint attachment of the 4G multimode card means that the 4G multimode card is attached to a 3G network and communicates by using the 3G network. After the 4G multi-mode card is attached, the call connection of the mobile terminal during the call can be realized.
Further optionally, step S20, the step of performing the joint attachment by the called mobile terminal specifically includes:
the called mobile terminal sends an attach request message to the MME.
And the MME sends an SGs location updating request message to the corresponding VLR. The SGs Location Update request message includes the LAI of the called mobile terminal, the IMSI of the 4G multimode card, MME information, and a Location Update Type (Location Update Type).
The VLR stores MME information and creates SGs associations with called mobile terminals under the MME.
And the VLR initiates a called mobile terminal position updating process to the HLR according to the LAI and the IMSI of the called mobile terminal, and returns confirmation information to the MME after the updating is completed.
And the MME sends an attachment completion message to the called mobile terminal to complete the joint attachment of the called mobile terminal.
The pre-paging method provided in this embodiment includes:
s21, the calling MSC sends an SRI request to the called HLR.
Wherein, the SRI request comprises a pre-paging mark and a called number. The calling MSC refers to an MSC to which the calling mobile terminal belongs. The called MSC refers to an MSC to which the called mobile terminal belongs.
S22, the called HLR sends the roaming number request to the called MSC according to the SRI request.
Wherein, the roaming number request includes the called number information.
S23, the called MSC sends a paging request to the called mobile terminal. Meanwhile, the called MSC returns the roaming number to the called HLR according to the roaming number request.
It can be understood that in this embodiment, after sending the paging request to the called mobile terminal, the method further includes a step of the called mobile terminal dropping back to the cell, and after the called mobile terminal dropping back to the cell, the method sends the paging response information to the called MSC.
Optionally, the step of the called mobile terminal dropping back to the cell includes:
s241, the called mobile terminal receives the paging request sent by the MME and sends an extended service request to the MME.
S242, the MME instructs the eNB to send the fallback cell configuration information to the called mobile terminal.
The configuration information of the fallback cells comprises a plurality of configured fallback cells.
S243, the called mobile terminal receives the configuration information of the fallback cell, measures the configured fallback cell, and sends the measurement result to the eNB.
S244, the eNB determines the fallback cell according to the measurement result and sends the fallback cell information to the called mobile terminal.
Specifically, the eNB processes the measurement result to obtain the best fallback cell. The best fallback cell is the fallback cell which allows access and has the best signal.
In the step, the best fallback cell which allows access and has the best signal is screened from the numerous configured fallback cells, and the mobile terminal falls back to the best fallback cell, so that the situation that the mobile terminal is refused to access due to the fact that the fallback cell is in a congestion state or other poor communication states can be avoided, the mobile terminal can be guaranteed to fall back successfully, call can be established smoothly, and user experience is improved.
Further optionally, after the eNB determines the fallback cell according to the measurement result, the method further includes:
s2441, the eNB sends the information of the fallback cell to the called MSC.
S2442, the called MSC indicates the corresponding base station to do the work of establishing the wireless signaling bearer in advance according to the received information of the fallback cell.
After the base station establishes the wireless signaling bearer, the base station sends information to the called MSC, the called MSC sends information to the MME, the MME sends information to the eNB, and the eNB sends the wireless signaling bearer information and the fallback cell information to the mobile terminal.
And S245, the called mobile terminal falls back to the corresponding fall-back cell according to the fall-back cell information.
After step S275, further comprising: and judging whether the fallback cell is consistent with the cell identifier during the joint attachment, if the fallback cell is not consistent with the cell identifier during the joint attachment, the mobile terminal firstly performs location update, and after the location update is completed, performs step S246. If the dropped cell coincides with the cell identity at the time of the joint attachment, step S246 is continued.
S246, the called mobile terminal sends paging response information to the called MSC.
S25, after receiving the roaming number, the called HLR returns the roaming number to the calling MSSC.
S25, after receiving the roaming number, the calling MSC sends a call setup request to the called MSC.
S27, the called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends the call progress information to the calling MSC according to the receiving condition of the paging response information.
The paging response information transmitted by the called mobile terminal in step S27 is the paging correspondence information transmitted by the called mobile terminal in step S246.
Wherein, the receiving condition of the paging corresponding information may include: whether paging response information is received. If the paging response information sent by the called mobile terminal is not received before, the called MSC sends a response message in the call establishment process to the calling MSC until the paging response information sent by the called mobile terminal is received, and the called MSC sends a call establishment response message to the calling MSC to establish the call.
Example 3:
as shown in fig. 2, the present embodiment provides a pre-paging device, including: calling MSC, called HLR, called MSC,
And the calling MSC is used for sending the SRI request to the called HLR. And is also used for sending a call establishment request to the called MSC after receiving the roaming number.
And the called HLR is used for receiving the SRI request sent by the calling MSC and sending a roaming number request to the called MSC according to the SRI request.
And the called MSC is used for sending a paging request to the called mobile terminal and simultaneously returning the roaming number to the called HLR according to the roaming number request. The called MSC is also used for receiving the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sending the call progress information to the calling MSC according to the receiving condition of the paging response information.
Optionally, the pre-paging device provided in this embodiment further includes: MME and eNB. Wherein the content of the first and second substances,
the MME is used for sending a paging request to the called mobile terminal. And is also used for receiving the extended service request sent by the called mobile terminal.
The eNB is used for sending the fallback cell configuration information to the called mobile terminal under the instruction of the MME. And is also used for receiving the measurement result sent by the called mobile terminal. And determining a fallback cell according to the measurement result, and sending fallback cell information to the called mobile terminal so that the called mobile terminal can fall back to the corresponding fallback cell according to the fallback cell information.
Optionally, the pre-paging device provided in this embodiment further includes: and the joint attachment module is used for carrying out joint attachment on the 4G multi-mode card on the called mobile terminal.
In the pre-paging device provided in this embodiment, the called MSC sends the paging request to the called mobile terminal and also returns the roaming number to the called HLR according to the roaming number request.
Example 3:
the embodiment provides a pre-paging system, which comprises any one of the pre-paging devices provided in the embodiment 2.
Because the pre-paging system provided in this embodiment includes the pre-paging device provided in embodiment 2, the called MSC sends a paging request to the called mobile terminal and also returns a roaming number to the called HLR according to the roaming number request.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. A method of pre-paging, comprising:
the calling MSC sends an SRI request to the called HLR;
the called HLR sends a roaming number request to the called MSC according to the SRI request;
the called MSC sends a paging request to the called mobile terminal; meanwhile, the called MSC returns a roaming number to the called HLR according to the roaming number request;
after receiving the roaming number, the called HLR returns the roaming number to the calling MSC;
after receiving the roaming number, the calling MSC sends a call establishment request to the called MSC;
a called MSC receives a call establishment request sent by a calling MSC and paging response information sent by a called mobile terminal, and sends call process information to the calling MSC according to the receiving condition of the paging response information;
after the called MSC sends a paging request to the called mobile terminal, the method also comprises a step that the called mobile terminal falls back to the cell; the step of the called mobile terminal falling back to the cell comprises the following steps:
the called mobile terminal receives a paging request sent by the MME and sends an extended service request to the MME;
the MME instructs the eNB to send the configuration information of the fallback cell to the called mobile terminal;
the called mobile terminal receives the configuration information of the fallback cell, measures the configured fallback cell and sends a measurement result to the eNB;
the eNB determines a fallback cell according to the measurement result and sends fallback cell information to the called mobile terminal;
the called mobile terminal falls back to the corresponding falling cell according to the falling cell information;
after the eNB determines the fallback cell according to the measurement result, and before sending fallback cell information to the called mobile terminal, the method further includes:
the eNB sends information of a fallback cell to the called MSC;
and the called MSC indicates the corresponding base station to do the work of building the wireless signaling bearer in advance according to the received information of the fallback cell.
2. The pre-paging method as claimed in claim 1, wherein the called mobile terminal sends a paging response message to the called MSC after falling back to a cell.
3. The pre-paging method according to claim 1, wherein the called mobile terminal comprises a 4G multimode card.
4. The pre-paging method according to claim 3, further comprising, before issuing a paging request to the called mobile terminal: and the called mobile terminal performs joint attachment.
5. The pre-paging method as claimed in claim 4, wherein the step of the called mobile terminal performing the joint attach comprises:
the called mobile terminal sends an attachment request message to the MME;
MME sends SGs location update request message to corresponding VLR; the SGs location updating request message comprises LAI, IMSI, MME information and location updating type of the called mobile terminal;
VLR stores the MME information and establishes SGs association with the called mobile terminal under MME;
the VLR initiates a called mobile terminal position updating flow to the HLR according to the LAI and the IMSI of the called mobile terminal, and returns confirmation information to the MME after the updating is completed;
and the MME sends an attachment completion message to the called mobile terminal to complete the combined attachment of the called mobile terminal.
6. A pre-paging device, comprising:
the calling MSC is used for sending an SRI request to the called HLR; the mobile terminal is also used for sending a call establishment request to the called MSC after receiving the roaming number;
the called HLR is used for receiving the SRI request sent by the calling MSC and sending a roaming number request to the called MSC according to the SRI request;
the called MSC is used for sending a paging request to the called mobile terminal and simultaneously returning a roaming number to the called HLR according to the roaming number request; the called MSC is also used for receiving a call establishment request sent by the calling MSC and paging response information sent by the called mobile terminal, and sending call process information to the calling MSC according to the receiving condition of the paging response information;
the device further comprises:
MME, used for sending paging request to called mobile terminal; the system is also used for receiving an extended service request sent by the called mobile terminal;
the eNB is used for sending the configuration information of the fallback cell to the called mobile terminal under the instruction of the MME; the mobile terminal is also used for receiving the measurement result sent by the called mobile terminal; determining a fallback cell according to the measurement result, and sending fallback cell information to the called mobile terminal so that the called mobile terminal can fall back to the corresponding fallback cell according to the fallback cell information;
the eNB is also used for: after determining the fallback cell according to the measurement result, before sending the fallback cell information to the called mobile terminal, sending the fallback cell information to the called MSC;
the called MSC is also used for indicating the corresponding base station to do the work of building the wireless signaling bearer in advance according to the received fallback cell information.
7. A pre-paging system, comprising the pre-paging apparatus of claim 6.
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| CN103828410A (en) * | 2011-01-21 | 2014-05-28 | 阿尔卡特朗讯公司 | Mobile terminating roaming forwarding for mobile communications devices |
| CN104160747A (en) * | 2012-03-07 | 2014-11-19 | 阿尔卡特朗讯 | Circuit switch fallback (CSFB) during prepaging |
| CN106982422A (en) * | 2016-01-19 | 2017-07-25 | 中国移动通信集团重庆有限公司 | The method and device of 2G/3G location area informations is obtained under circuit domain dropping |
| CN110300436A (en) * | 2019-07-04 | 2019-10-01 | 中国联合网络通信集团有限公司 | A kind of method and device that CSFB call failure missed call is reminded |
| CN110351800A (en) * | 2019-07-19 | 2019-10-18 | 中国联合网络通信集团有限公司 | A kind of method and system of redundancy joint attachment |
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2020
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103828410A (en) * | 2011-01-21 | 2014-05-28 | 阿尔卡特朗讯公司 | Mobile terminating roaming forwarding for mobile communications devices |
| CN104160747A (en) * | 2012-03-07 | 2014-11-19 | 阿尔卡特朗讯 | Circuit switch fallback (CSFB) during prepaging |
| CN106982422A (en) * | 2016-01-19 | 2017-07-25 | 中国移动通信集团重庆有限公司 | The method and device of 2G/3G location area informations is obtained under circuit domain dropping |
| CN110300436A (en) * | 2019-07-04 | 2019-10-01 | 中国联合网络通信集团有限公司 | A kind of method and device that CSFB call failure missed call is reminded |
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| CN111935822A (en) | 2020-11-13 |
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