CN108012281B - VoLTE call connection method and system based on pre-paging - Google Patents
VoLTE call connection method and system based on pre-paging Download PDFInfo
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- CN108012281B CN108012281B CN201711277662.3A CN201711277662A CN108012281B CN 108012281 B CN108012281 B CN 108012281B CN 201711277662 A CN201711277662 A CN 201711277662A CN 108012281 B CN108012281 B CN 108012281B
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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
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
A VoLTE call connection method and system based on pre-paging includes: the calling initiated by the VoLTE calling terminal is transferred to a pre-paging server, the pre-paging server initiates paging to the VoLTE called terminal first to enable the called terminal to be in an RRC connection state, and then the calling is continued to be connected to the called terminal, so that the communication connection between the calling terminal and the called terminal is completed. The invention belongs to the field of communication, and can effectively shorten the connection time delay of a VoLTE terminal, thereby providing a faster connection speed for a user.
Description
Technical Field
The invention relates to a VoLTE call connection method and system based on pre-paging, belonging to the field of communication.
Background
VoLTE (voice Over LTE) is a technology for providing mobile voice services based on an LTE network, and compared with the conventional 2G/3G service, the most significant advantages of VoLTE service are high-definition call tone quality and ultra-fast connection speed. The high-definition call tone quality is a natural attribute of the VoLTE network, and can be realized as long as the calling terminal and the called terminal are registered under the VoLTE network. Currently, the delay of the VoLTE voice connection is 2-3 seconds, and 2/3G is generally 6-7 seconds. In order to make the VoLTE user feel faster switching speed, the VoLTE network needs to be continuously perfected and optimized.
Therefore, how to further shorten the connection delay of the VoLTE terminal has become a technical problem generally noticed by technicians.
Disclosure of Invention
In view of the above, the present invention provides a method and a system for connecting a VoLTE call based on pre-paging, which can effectively shorten the connection delay of a VoLTE terminal, thereby providing a faster connection speed for a user.
In order to achieve the above object, the present invention provides a method for connecting a VoLTE call based on pre-paging, which comprises:
the calling initiated by the VoLTE calling terminal is transferred to a pre-paging server, the pre-paging server initiates paging to the VoLTE called terminal to enable the called terminal to be in an RRC connection state, then the calling is continued to be connected to the called terminal, thereby completing the communication connection between the calling terminal and the called terminal,
further comprises the following steps:
in step 2, initiating an accurate location information query to the called terminal, further comprising:
step 21, the pre-paging server sends User Data inquiry (UDR) information to the HSS through the Sh interface, sets a User-Identity parameter of a Data domain in the UDR information as a called number and a Data-Reference parameter as TADSInformation, then judges whether a domain where a called terminal returned by the HSS is located is an LTE domain, and if so, continues the next step; if not, the process is ended;
step 22, the pre-paging server continues to send the UDR message to the HSS, and sets the data field User-Identity parameter in the UDR message to the called number, and sets the CurrentLocation parameter to initiateactive locationretrieval, so that the called terminal is changed from the RRC idle state to the RRC connected state.
In order to achieve the above object, the present invention further provides a pre-paging-based VoLTE call connection system, which includes:
the pre-paging server is used for receiving a call initiated by the VoLTE calling terminal, initiating paging to the VoLTE called terminal to enable the called terminal to be in an RRC connection state, continuing to connect the call to the called terminal so as to complete communication connection between a calling terminal and a called terminal,
the pre-paging server further comprises:
a pre-paging processing device, which is used for extracting the called number from the INVITE message sent by S-CSCF, then sending dumb short message or accurate position information inquiry to the called terminal, so that the called terminal is converted into RRC connection state from RRC idle state, finally returning the INVITE message to S-CSCF, and continuing to connect the call to the called terminal by S-CSCF,
the pre-paging processing device further comprises:
the accurate location information inquiry paging unit is used for firstly sending a User Data inquiry UDR message to the HSS through an Sh interface, setting a Data field User-Identity parameter in the UDR message as a called number and a Data-Reference parameter as TADSInformation, then judging whether a domain where a called terminal returned by the HSS is located is an LTE domain, if so, continuously sending the UDR message to the HSS, setting the Data field User-Identity parameter in the UDR message as the called number and setting a currentLocation parameter as an InitiatedActiveLocationRecommitary, thereby enabling the called terminal to be converted into an RRC connection state from an RRC idle state.
Compared with the prior art, the invention has the beneficial effects that: the process of paging the called terminal generally occupies 700 plus 1000 milliseconds, which is a part with larger time delay in the whole connection process, and the invention effectively reduces the paging time delay by paging the VoLTE called terminal in advance to ensure that the VoLTE called terminal is in an RRC connection state, thereby reducing the whole end-to-end connection time delay; when the VoLTE terminal is in an RRC connection state at a wireless side, signaling connection exists between the MME and the VoLTE terminal, if an incoming call is received at the moment, the RRC connection establishment process does not exist, and the MME does not need to page a called terminal, so that the connection delay is small; the VoLTE terminal can not be always in an RRC connection state on a wireless side, generally, the VoLTE terminal is converted into an RRC idle state after a set Inactivity Timer (for example, 10s) is overtime, otherwise, a large amount of wireless resources are occupied, and the service providing capacity is influenced, so that the VoLTE called terminal is pre-paged by the pre-paging server as early as possible when a calling flow or a called flow receives an INVITE message, and a better optimization effect can be achieved.
Drawings
Fig. 1 is a specific flowchart of a VoLTE call connection method based on pre-paging according to the present invention.
Fig. 2 is a signaling interaction flow diagram of an embodiment of the present invention in a calling flow.
Fig. 3 is a signaling interaction flow diagram of an embodiment of the present invention in a called flow.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings.
The invention relates to a VoLTE call connection method based on pre-paging, which comprises the following steps:
the calling initiated by the VoLTE calling terminal is transferred to a pre-paging server, the pre-paging server initiates paging to the VoLTE called terminal first to enable the called terminal to be in an RRC connection state, and then the calling is continued to be connected to the called terminal, so that the communication connection between the calling terminal and the called terminal is completed.
The pre-paging server can initiate paging to the VoLTE called terminal through two modes of dumb short messages or accurate position information inquiry so as to enable the called terminal to be in an RRC connection state. As shown in fig. 1, the present invention may further include:
and step 3, the pre-paging server returns an INVITE message to the S-CSCF, and the S-CSCF continues to connect the call to the called terminal.
In step 2, the pre-paging server sends a dummy short Message to the called terminal, namely, an SIP Message is sent to the called terminal, and the TP-PID parameter is set to be 0x 40; initiating the accurate location information query to the called terminal, which may further include:
step 21, the pre-paging server sends a User Data query UDR (User _ Data _ Request) message to the HSS through the Sh interface, sets a Data field User-Identity parameter in the UDR message as a called number, sets a Data-Reference parameter as tad information (the value is 26), then judges whether a domain where a called terminal returned by the HSS is located is an LTE domain, if yes, continues the next step; if not, the process is ended;
step 22, the pre-paging server continues to send the UDR message to the HSS, and sets the data field User-Identity parameter in the UDR message to the called number, and sets the CurrentLocation parameter to initiateactive locationretrieval (the value of which is 1), so that the called terminal is changed from the RRC idle state to the RRC connected state.
Fig. 2 and 3 show signaling interaction flows of an embodiment of the present invention in a calling flow and a called flow, respectively. As shown in fig. 2, the signaling interaction flow in the calling flow of the present invention is as follows:
step a 1-2: the calling S-CSCF forwards the INVITE message initiated by the calling to a pre-paging server;
step a3-4, the pre-paging server initiates paging to the called terminal, and the called terminal is converted from an RRC idle state to an RRC connected state;
step a5, the pre-paging server returns INVITE message to calling S-CSCF;
step a 6-9: the calling S-CSCF continues to connect the call to the called terminal.
As shown in fig. 3, the signaling interaction process in the called process of the present invention is as follows:
step b 1-3: the calling S-CSCF forwards the INVITE message initiated by the calling to the called S-CSCF, and the called S-CSCF continues to forward the INVITE message to the pre-paging server;
step b4-5, the pre-paging server initiates paging to the called terminal, and the called terminal is converted from an RRC idle state to an RRC connected state;
step b6, the pre-paging server returns INVITE message to the called S-CSCF;
step b 7: the called S-CSCF continues to connect the call to the called terminal.
The invention relates to a VoLTE call connection system based on pre-paging, which comprises the following components:
the pre-paging server is used for receiving a call initiated by the VoLTE calling terminal, initiating paging to the VoLTE called terminal to enable the called terminal to be in an RRC connection state, and continuing to connect the call to the called terminal so as to complete communication connection between the calling terminal and the called terminal.
The pre-paging server can initiate paging to the VoLTE called terminal by two modes of dumb short messages or accurate position information inquiry, and further comprises:
the pre-paging processing device is used for extracting a called number from an INVITE message sent by the S-CSCF, then sending a dummy short message or accurate position information query to the called terminal so that the called terminal is converted into an RRC connected state from an RRC idle state, finally returning the INVITE message to the S-CSCF, and continuing to connect the call to the called terminal by the S-CSCF.
The pre-paging processing device may further include a dummy short message paging unit or an accurate location information inquiry paging unit, wherein:
the mute short Message paging unit is used for sending an SIP Message to the called terminal and setting the TP-PID parameter to be 0x 40;
the accurate location information inquiry paging unit is used for firstly sending a User Data inquiry UDR message to the HSS through an Sh interface, setting a Data field User-Identity parameter in the UDR message as a called number and a Data-Reference parameter as TADSInformation, then judging whether a domain where a called terminal returned by the HSS is located is an LTE domain, if so, continuously sending the UDR message to the HSS, setting the Data field User-Identity parameter in the UDR message as the called number and setting a currentLocation parameter as an InitiatedActiveLocationRecommitary, thereby enabling the called terminal to be converted into an RRC connection state from an RRC idle state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A VoLTE call connection method based on pre-paging is characterized by comprising the following steps:
the calling initiated by the VoLTE calling terminal is transferred to a pre-paging server, the pre-paging server initiates paging to the VoLTE called terminal to enable the called terminal to be in an RRC connection state, then the calling is continued to be connected to the called terminal, thereby completing the communication connection between the calling terminal and the called terminal,
further comprises the following steps:
step 1, S-CSCF forwards the INVITE message sent by the calling terminal to the pre-paging server;
step 2, the pre-paging server extracts the called number from the INVITE message sent by the S-CSCF, and then sends a dummy short message to the called terminal or initiates accurate position information query to the called terminal so that the called terminal is converted into an RRC connection state from an RRC idle state;
step 3, the pre-paging server returns the INVITE message to the S-CSCF, and the S-CSCF continues to connect the call to the called terminal,
in step 2, initiating an accurate location information query to the called terminal, further comprising:
step 21, the pre-paging server sends User Data inquiry (UDR) information to the HSS through the Sh interface, sets a User-Identity parameter of a Data domain in the UDR information as a called number and a Data-Reference parameter as TADSInformation, then judges whether a domain where a called terminal returned by the HSS is located is an LTE domain, and if so, continues the next step; if not, the process is ended;
step 22, the pre-paging server continues to send the UDR message to the HSS, and sets the data field User-Identity parameter in the UDR message to the called number, and sets the CurrentLocation parameter to initiateactive locationretrieval, so that the called terminal is changed from the RRC idle state to the RRC connected state.
2. The method as claimed in claim 1, wherein in step 2, the pre-paging server sends the dummy sms to the called terminal, i.e. sends a SIP Message to the called terminal, and sets the TP-PID parameter to 0x 40.
3. A VoLTE call connection system based on pre-paging is characterized by comprising:
the pre-paging server is used for receiving a call initiated by the VoLTE calling terminal, initiating paging to the VoLTE called terminal to enable the called terminal to be in an RRC connection state, continuing to connect the call to the called terminal so as to complete communication connection between a calling terminal and a called terminal,
the pre-paging server further comprises:
a pre-paging processing device, which is used for extracting the called number from the INVITE message sent by S-CSCF, then sending dumb short message or accurate position information inquiry to the called terminal, so that the called terminal is converted into RRC connection state from RRC idle state, finally returning the INVITE message to S-CSCF, and continuing to connect the call to the called terminal by S-CSCF,
the pre-paging processing device further comprises:
the accurate location information inquiry paging unit is used for firstly sending a User Data inquiry UDR message to the HSS through an Sh interface, setting a Data field User-Identity parameter in the UDR message as a called number and a Data-Reference parameter as TADSInformation, then judging whether a domain where a called terminal returned by the HSS is located is an LTE domain, if so, continuously sending the UDR message to the HSS, setting the Data field User-Identity parameter in the UDR message as the called number and setting a currentLocation parameter as an InitiatedActiveLocationRecommitary, thereby enabling the called terminal to be converted into an RRC connection state from an RRC idle state.
4. The system of claim 3 wherein the pre-page processing means further comprises:
and the mute short Message paging unit is used for sending an SIP Message to the called terminal and setting the TP-PID parameter in the SIP Message to be 0x 40.
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CN106559871A (en) * | 2015-09-30 | 2017-04-05 | 中兴通讯股份有限公司 | Call request reorientation method, call request connecting method and its device |
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CN1972500A (en) * | 2005-11-25 | 2007-05-30 | 展讯通信(上海)有限公司 | Method for reducing time delay established by calling in mobile communication system |
CN101257715A (en) * | 2008-04-11 | 2008-09-03 | 中兴通讯股份有限公司 | Call method for enhancing call completing rate of pre-beep-page process |
CN104685921A (en) * | 2012-08-31 | 2015-06-03 | 高通股份有限公司 | Optimistic quality of service set up |
CN105828307A (en) * | 2015-01-05 | 2016-08-03 | 中国移动通信集团北京有限公司 | Call routing method and related network element |
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