CN106162939B - Method and device for establishing call connection - Google Patents
Method and device for establishing call connection Download PDFInfo
- Publication number
- CN106162939B CN106162939B CN201610717463.9A CN201610717463A CN106162939B CN 106162939 B CN106162939 B CN 106162939B CN 201610717463 A CN201610717463 A CN 201610717463A CN 106162939 B CN106162939 B CN 106162939B
- Authority
- CN
- China
- Prior art keywords
- terminal
- network
- core network
- paging message
- call connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- 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
Abstract
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for establishing call connection, which are used for improving the success rate of establishing the call connection between a called terminal and a calling terminal. The terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network; sending an extended service request to the core network, wherein the extended service request is used for requesting the core network to send a redirection message to the terminal; if the terminal does not receive the redirection message sent by the core network within the preset time length, determining to search a 2G/3G network near the terminal; the terminal sends a first location updating request to a core network; and the terminal receives a first position updating response sent by the core network, resides in the 2G/3G network and establishes call connection according to the paging message. The method provided by the embodiment of the invention realizes that the terminal can still successfully establish the call connection without receiving the redirection message within the preset time length, thereby improving the success rate of establishing the call connection between the called terminal and the calling terminal.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method and a device for establishing call connection.
Background
With the rapid development of communication technology, Long Term Evolution (LTE) networks are increasingly paid more attention by various operators and equipment providers as the main Evolution direction of current mobile communication. At present, a terminal can simultaneously use an LTE network and a 2G/3G network, the LTE network cannot support a voice service of a Circuit Switched (CS) domain, and the 2G/3G network supports a voice service of a CS domain. At present, in order to enable a terminal to receive a paging of a voice service under LTE access, a Circuit Switched Fallback (CSFB) technology is adopted, that is, the terminal preferentially resides in an LTE network to enjoy a high-rate data service, and when a called (MTCall) Call occurs, since the LTE network cannot provide the voice service, the voice service is Fallback to a CS domain of a 2G/3G network through a CSFB Fallback process, and an MT Call connection is established.
In the prior art, after receiving a paging message of a voice Service, a called terminal sends an Extended Service Request (ESR) message to a core network, starts a T3417_ EXT timer, and waits for the core network to send a redirection message to the terminal, so that the called terminal receives the redirection message, and then drops the LTE network back to a 2G/3G network, and establishes an MT Call connection with a calling terminal. If the called terminal does not receive the redirection message sent by the core network when the preset time length of the T3417_ EXT timer is exceeded, the called terminal fails to establish the MT Call connection with the calling terminal. For example, if the core network does not successfully analyze the ESR message, the core network does not send a redirection message to the called terminal, and at this time, the called terminal cannot receive the redirection message within the preset duration of the T3417_ EXT timer, which results in a failure in establishing the MTCall connection between the called terminal and the calling terminal. Therefore, the success rate of establishing the call connection between the called terminal and the calling terminal is low in the prior art.
Disclosure of Invention
The embodiment of the invention provides a method and a device for establishing a call, which are used for improving the success rate of establishing call connection between a called terminal and a calling terminal.
The embodiment of the invention provides a method for establishing call connection, which comprises the following steps:
the terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network; wherein, the paging message includes the identification of the terminal;
the terminal sends an extended service request to a core network under an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
if the terminal does not receive the redirection message sent by the core network within the determined preset time length, then: the terminal determines to search a 2G/3G network near the terminal;
a terminal sends a first location updating request to a core network, wherein the first location updating request carries an identifier of a 2G/3G network;
the terminal receives a first position updating response sent by a core network and resides in the 2G/3G network;
the terminal establishes a call connection according to the paging message under the 2G/3G network.
An embodiment of the present invention provides a terminal, including:
the receiving unit is used for receiving the paging message issued by the core network under the LTE network; wherein, the paging message includes the identification of the terminal; receiving a first location update response sent by a core network;
a sending unit, configured to send an extended service request to a core network in an LTE network; sending a first location update request to a core network; wherein, the extended service request is used for requesting the core network to send a redirection message to the receiving unit;
a processing unit, configured to not receive a redirection message sent by a core network within a predetermined duration, then: determining that a nearby 2G/3G network is searched; sending a first location updating request to a core network through a sending unit, wherein the first location updating request carries an identifier of a 2G/3G network; receiving a first location update response sent by a core network through a receiving unit, and residing in a 2G/3G network; and establishing the call connection according to the paging message under the 2G/3G network.
In the embodiment of the invention, a terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network; wherein, the paging message includes the identification of the terminal; the terminal sends an extended service request to a core network under an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal; if the terminal does not receive the redirection message sent by the core network within the determined preset time length, then: the terminal determines to search a 2G/3G network near the terminal; a terminal sends a first location updating request to a core network, wherein the first location updating request carries an identifier of a 2G/3G network; the terminal receives a first position updating response sent by a core network and resides in the 2G/3G network; the terminal establishes a call connection according to the paging message under the 2G/3G network. After receiving the paging message, the terminal sends an extended service request to the core network, and does not receive a redirection message sent by the core network within a preset time length, the terminal searches for the 2G/3G network, determines to search for the 2G/3G network near the terminal, sends a location updating request message to the core network, receives a location updating response sent by the core network, and falls back to the 2G/3G network, so that the terminal does not receive the redirection message within the preset time length, can still successfully establish call connection, and improves the success rate of establishing call connection between the called terminal and the calling terminal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic diagram of a system architecture for call connection establishment according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for establishing a call connection according to an embodiment of the present invention;
fig. 2a is a flowchart illustrating a method for establishing a call connection according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) System, a Long Term Evolution (Long Term Evolution) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS) System, a Worldwide Interoperability for Microwave Access (WiMAX) Communication System, a future 5G Communication System, and the like.
Fig. 1 illustrates a schematic diagram of a system architecture for call setup, where the system architecture 100 includes a terminal 101 and a core network 102, and the terminal 101 and the core network 102 may be connected through a wireless connection or a wired connection or other manners, as shown in fig. 1. A core network of the 2G/3G network is a Mobile services switch (MSC for short), a core network of the 4G network is a Mobility Management Entity (MME for short), the MSC and the MME are connected through an SGs interface, and a signaling message can be transmitted through the SGs interface. The character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship. For example, a 2G/3G network means a 2G or 3G network.
In the embodiment of the present invention, the terminal 101 may refer to User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a terminal device, a wireless communication device, a User Equipment, and the like.
Fig. 2 is a schematic flowchart illustrating a method for call setup according to an embodiment of the present invention.
Based on the system architecture shown in fig. 1, as shown in fig. 2, a method for call setup provided in an embodiment of the present invention includes the following steps:
step S2001: the core network sends a paging message to a terminal residing in the LTE network; wherein, the paging message includes the identification of the terminal;
step S2002: the terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network;
step S2003: the terminal sends an extended service request to a core network under an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
step S2004: a core network receives an extended service request sent by a terminal in an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
step S2005: if the terminal does not receive the redirection message sent by the core network within the determined preset time length, then: the terminal determines to search a 2G/3G network near the terminal;
step S2006: a terminal sends a first location updating request to a core network, wherein the first location updating request carries an identifier of a 2G/3G network;
step S2007: a core network receives a first location updating request sent by a terminal, wherein the first location updating request carries an identifier of a 2G/3G network;
step S2008: the core network sends a first location updating response to the terminal; the first location update response is used for enabling the terminal to reside in the 2G/3G network, and call connection is established under the 2G/3G network according to the paging message.
Step S2009: the terminal receives a first position updating response sent by a core network and resides in the 2G/3G network;
step S2010: the terminal establishes a call connection according to the paging message under the 2G/3G network.
In the embodiment of the invention, after receiving the paging message of the core network, the terminal sends the extended service request to the core network, the redirection message sent by the core network is not received within the preset time length, the terminal searches the 2G/3G network, determines the 2G/3G network nearby the terminal, sends the position updating request message to the core network, receives the position updating response sent by the core network, and the terminal falls back to the 2G/3G network from the LTE network, so that the terminal does not receive the redirection message within the preset time length and can still successfully establish the call connection, thereby improving the success rate of establishing the call connection between the called terminal and the calling terminal.
In specific implementation, the preset duration is the duration of the conventional core network feedback redirection message, and a specific value may be set according to a specific situation, which is not specifically limited in the embodiment of the present invention. In addition, there are many ways for the terminal to determine the preset duration, for example, in step S2003, the terminal sends the extended service request to the core network in the LTE network, starts a timer, for example, a T3417_ EXT timer, and sets the preset duration for the timer, when the preset duration arrives, the timer will send a prompt, and the terminal determines that the preset duration has elapsed after sending the extended service request.
Optionally, before the terminal determines to search for the 2G/3G network in the vicinity of the terminal, the method further includes: the terminal leaves the LTE network; the terminal searches for a 2G/3G network in the vicinity of the terminal.
Optionally, in the embodiment of the present invention, the terminal does not receive the redirection message sent by the core network within the predetermined time period, leaves the LTE network, searches for the 2G/3G network near the terminal, determines that the 2G/3G network near the terminal performs call connection, and reconnects the LTE network after the terminal and the core network release the call connection. Therefore, in the embodiment of the invention, the terminal leaves the LTE network temporarily so that the terminal searches the 2G/3G network to carry out Call connection, thereby avoiding that the terminal does not receive the redirection message sent by the core network for a long time and cannot search the 2G/3G network to cause the MT Call connection between the called terminal and the calling terminal to be established to fail.
Optionally, the first location update request further includes indication information for indicating the core network to send the paging message again; optionally, the terminal establishes a call connection according to the paging message, including: the terminal receives the paging message sent again by the core network under the 2G/3G network; the terminal establishes a call connection according to the paging message received under the 2G/3G network.
Correspondingly, optionally, after the core network receives the first location update request sent by the terminal, the method further includes: the core network sends the paging message to the terminal residing in the 2G/3G network again; wherein, the paging message is sent again to the terminal residing under the 2G/3G network for: and enabling the terminal to establish call connection according to the paging message received under the 2G/3G network.
Optionally, in the embodiment of the present invention, after determining that the terminal does not receive the redirection message sent by the core network within the preset time period, and after determining that the 2G/3G network near the terminal is searched, the terminal sends a first location update request to the core network, where the first location update request includes indication information for the core network to send the paging message again; after receiving the location updating request message sent by the terminal, the core network sends the paging message to the terminal again according to the indication information, so that the terminal receives the core network paging message again in the 2G/3G network, and the terminal establishes call connection according to the paging message received in the 2G/3G network. Therefore, the terminal does not receive the redirection message sent by the core network for a long time, the paging message received by the terminal is eliminated, and the terminal receives the paging message sent again by the core network under the 2G/3G network, thereby successfully establishing the call connection.
Optionally, the indication information is: the Circuit Switched fallback Mobile Terminating Call, CSMT for short, in the first location update request is in an active state.
Optionally, in the embodiment of the present invention, the terminal sends the first location update request to the core network, where the included indication information is a circuit switched fallback called CSMT flag bit. That is, the CSMT flag is added to the first location update request. Optionally, the CSMT flag bit may be: 1. after receiving the first location updating request, the core network determines that the terminal in the LTE network does not receive the paging message sent by the core network according to the CSMT flag value of the circuit domain fallback as 1, and needs to resend the paging message so that the terminal in the 2G/3G network receives the paging message, thereby establishing call connection. Alternatively, when the CSMT flag is 0, it may indicate that the flag is in an inactive state, and when the core network determines that the CSMT flag is 0 after receiving the first location update request, the paging message is not retransmitted to the terminal.
Optionally, after the terminal sends the extended service request to the core network under the LTE network, the method further includes: if the terminal receives the redirection message sent by the core network within the determined preset time length, then: the terminal sends a second location updating request to the core network according to the redirection message; the terminal receives a second position updating response sent by the core network and resides in the 2G/3G network; and the terminal establishes call connection according to the paging message received in the LTE network under the 2G/3G network.
Optionally, after the extended service request sent by the LTE network is received by the core network receiving terminal, the method further includes: the core network sends a redirection message to the terminal within a preset time length; the core network receives a second location updating request sent by the terminal; the core network sends a second location updating response to the terminal; wherein the second location update response is used for the terminal to camp on the 2G/3G network and establish a call connection according to the paging message received under the LTE network.
In the embodiment of the present invention, optionally, after the terminal sends the extended service request to the core network under the LTE network, the core network sends a redirection message to the terminal, and the terminal initiates a process of dropping from the LTE network to the 2G/3G network according to the redirection message received within the preset time period. And the terminal sends a second location update to the core network, and after receiving a second location update response, the terminal resides in the 2G/3G network, and establishes call connection in the 2G/3G network according to the paging message received by the terminal in the LTE network, so that the terminal can successfully reside in the 2G/3G network after receiving the redirection message received within a preset time length, thereby establishing call connection.
In order to more clearly describe the above method flow, the following examples are provided in the embodiments of the present invention.
Fig. 2a is a schematic flow chart illustrating another method for call connection according to an embodiment of the present invention, where based on the system architecture shown in fig. 1, as shown in fig. 2a, the method includes the following steps:
step S2101: the core network sends a paging message to a terminal residing in the LTE network; wherein, the paging message includes the identification of the terminal;
step S2102: the terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network; wherein, the paging message includes the identification of the terminal;
step S2103: the terminal sends an extended service request to a core network under an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
step S2104: a core network receives an extended service request sent by a terminal in an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
step S2105: if the terminal does not receive the redirection message sent by the core network within the determined preset time length, then: the terminal determines to search a 2G/3G network near the terminal;
step S2106: a terminal sends a first location updating request to a core network, wherein the first location updating request carries an identifier of a 2G/3G network;
step S2107: a core network receives a first location updating request sent by a terminal, wherein the first location updating request carries an identifier of a 2G/3G network;
step S2108: the core network sends a first location updating response to the terminal; the first location update response is used for enabling the terminal to reside in the 2G/3G network, and call connection is established under the 2G/3G network according to the paging message.
Step S2109: the terminal receives a first position updating response sent by a core network and resides in the 2G/3G network;
step S2110: the terminal establishes call connection according to the paging message under the 2G/3G network;
step S2111: the core network sends a redirection message to the terminal within a preset time length;
step S2112: the terminal receives a redirection message sent by a core network within a preset time length;
step S2113: the terminal sends a second location updating request to the core network according to the redirection message;
step S2114: the core network receives a second location updating request sent by the terminal;
step S2115: the core network sends a second location updating response to the terminal;
step S2116: the terminal receives a second position updating response sent by the core network and resides in the 2G/3G network;
step S2117: and the terminal establishes call connection according to the paging message received in the LTE network under the 2G/3G network.
It should be noted that, steps S2105 to S2110 and steps S2111 to S2117 are not in sequence, and are performed alternatively, that is, after the terminal sends the extended service request to the core network, the process executed by the terminal after the terminal does not receive the redirection message sent by the core network within the preset time period, and the process executed by the terminal after the terminal receives the redirection message sent by the core network within the preset time period are two selectable processes, and do not occur simultaneously.
From the above, it can be seen that: the embodiment of the invention provides a method for establishing call connection.A terminal resides in an LTE network and receives a paging message sent by a core network under the LTE network; wherein, the paging message includes the identification of the terminal; the terminal sends an extended service request to a core network under an LTE network; the extended service request is used for requesting a core network to send a redirection message to a terminal; if the terminal does not receive the redirection message sent by the core network within the preset time length, the terminal determines to search the 2G/3G network near the terminal; the terminal sends a first location updating request to the core network, receives a first location updating response sent by the core network, and resides in the 2G/3G network; the terminal establishes a call connection according to the paging message under the 2G/3G network. After receiving the paging message, the terminal sends an extended service request to the core network, receives no redirection message sent by the core network within a preset time length, searches the 2G/3G network, determines to search the 2G/3G network near the terminal, sends a position updating request message to the core network, receives a position updating response sent by the core network, and falls back to the 2G/3G network, so that the terminal does not receive the redirection message within the preset time length, can still successfully establish call connection, and improves the success rate of establishing call connection between the called terminal and the calling terminal.
Fig. 3 schematically illustrates a structure of a terminal according to an embodiment of the present invention.
Based on the same conception, the terminal provided by the embodiment of the present invention is configured to execute the above method flow, as shown in fig. 3, the terminal 300 includes a receiving unit 301, a processing unit 302, and a sending unit 303; wherein:
a receiving unit 301, configured to receive a paging message sent by a core network in an LTE network; wherein, the paging message includes the identification of the terminal; receiving a first location update response sent by a core network;
a sending unit 303, configured to send an extended service request to a core network in an LTE network; sending a first location update request to a core network; the extended service request is used for requesting a core network to send a redirection message to a terminal;
a processing unit 302, configured to, if a redirection message sent by the core network is not received within a predetermined time duration, then: determining that a nearby 2G/3G network is searched; sending a first location update request to a core network through a sending unit 303, wherein the first location update request carries an identifier of a 2G/3G network; receiving a first location update response sent by the core network through the receiving unit 301, and residing in the 2G/3G network; and establishing the call connection according to the paging message under the 2G/3G network.
Optionally, the processing unit 302 is further configured to: leave the LTE network; and searching nearby 2G/3G networks.
Optionally, the first location update request further includes indication information for indicating the core network to send the paging message again; optionally, the receiving unit 301 is further configured to: and receiving the paging message sent again by the core network under the 2G/3G network. Optionally, the processing unit 302 is configured to: and establishing a call connection according to the paging message received under the 2G/3G network.
Optionally, the indication information is: and the circuit domain in the first position updating request and in the activated state falls back the CSMT zone bit of the called party.
Optionally, the receiving unit 301 is further configured to: receiving a redirection message sent by a core network within a preset time length; and receiving a second location update response sent by the core network. The sending unit 303 is further configured to: and sending a second location updating request to the core network according to the redirection message. A processing unit 302, further configured to: after receiving the second location update response sent by the core network through the receiving unit 301, the ue camps on the 2G/3G network; and under the 2G/3G network, establishing call connection according to the paging message received under the LTE network.
From the above, it can be seen that: after receiving the paging message, the terminal sends an extended service request to the core network, receives no redirection message sent by the core network within a preset time length, searches the 2G/3G network, determines to search the 2G/3G network near the terminal, sends a position updating request message to the core network, receives a position updating response sent by the core network, and falls back to the 2G/3G network, so that the terminal does not receive the redirection message within the preset time length, can still successfully establish call connection, and improves the success rate of establishing call connection between the called terminal and the calling terminal.
It should be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method for call connection setup, comprising:
a terminal resides in an LTE network and receives a paging message issued by a core network under the LTE network; wherein, the paging message includes the identifier of the terminal;
the terminal sends an extended service request to the core network under the LTE network; wherein, the extended service request is used for requesting the core network to send a redirection message to the terminal;
if the terminal does not receive the redirection message sent by the core network within the determined preset time length, then:
the terminal determines to search a 2G/3G network near the terminal;
the terminal sends a first location updating request to the core network, wherein the first location updating request carries the identifier of the 2G/3G network;
the terminal receives a first location updating response sent by the core network and resides in the 2G/3G network;
the terminal establishes call connection under the 2G/3G network according to the paging message;
wherein, the first location updating request further includes indication information for indicating the core network to send the paging message again; the terminal establishes call connection according to the paging message, and the method comprises the following steps: the terminal receives the paging message sent again by the core network under the 2G/3G network; and the terminal establishes call connection according to the paging message received under the 2G/3G network.
2. The method of claim 1, wherein before the terminal determines to search for a 2G/3G network in the vicinity of the terminal, further comprising:
the terminal leaves the LTE network;
and the terminal searches the 2G/3G network near the terminal.
3. The method of claim 1, wherein the indication information is: and the circuit domain in the first position updating request and in the activated state falls back the CSMT zone bit of the called party.
4. The method of any of claims 1 to 3, wherein after the terminal sends an extended service request to the core network under the LTE network, further comprising:
if the terminal receives the redirection message sent by the core network within a determined preset time length, then:
the terminal sends a second location updating request to the core network according to the redirection message;
the terminal receives a second location updating response sent by the core network and resides in the 2G/3G network;
and the terminal establishes call connection in the 2G/3G network according to the paging message received in the LTE network.
5. A terminal, comprising:
the receiving unit is used for receiving the paging message issued by the core network under the LTE network; wherein, the paging message includes the identifier of the terminal; receiving a first location update response sent by the core network;
a sending unit, configured to send an extended service request to the core network under the LTE network; sending a first location update request to the core network; wherein, the extended service request is used for requesting the core network to send a redirection message to the terminal;
a processing unit, configured to, if the redirection message sent by the core network is not received within a predetermined duration, then: determining that a nearby 2G/3G network is searched; sending the first location updating request to the core network through the sending unit, wherein the first location updating request carries an identifier of the 2G/3G network; receiving the first location update response sent by the core network through the receiving unit, and residing in a 2G/3G network; establishing a call connection according to the paging message under the 2G/3G network;
wherein, the first location updating request further includes indication information for indicating the core network to send the paging message again; the receiving unit is further configured to: receiving the paging message sent again by the core network under the 2G/3G network; the processing unit is configured to: and establishing call connection according to the paging message received under the 2G/3G network.
6. The terminal of claim 5, wherein the processing unit is further configured to:
leaving the LTE network;
and searching the 2G/3G network nearby.
7. The terminal of claim 5, wherein the indication information is: and the circuit domain in the first position updating request and in the activated state falls back the CSMT zone bit of the called party.
8. The terminal according to any of claims 5 to 7, wherein the receiving unit is further configured to:
receiving the redirection message sent by the core network within a preset time length; receiving a second location update response sent by the core network;
the sending unit is further configured to:
sending a second location updating request to the core network according to the redirection message;
the processing unit is further configured to:
after receiving the second location update response sent by the core network through the receiving unit, residing in the 2G/3G network;
and under the 2G/3G network, establishing call connection according to the paging message received under the LTE network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717463.9A CN106162939B (en) | 2016-08-24 | 2016-08-24 | Method and device for establishing call connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717463.9A CN106162939B (en) | 2016-08-24 | 2016-08-24 | Method and device for establishing call connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106162939A CN106162939A (en) | 2016-11-23 |
| CN106162939B true CN106162939B (en) | 2020-02-07 |
Family
ID=57342569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610717463.9A Active CN106162939B (en) | 2016-08-24 | 2016-08-24 | Method and device for establishing call connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106162939B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108632937B (en) * | 2017-03-21 | 2021-01-15 | 中国移动通信有限公司研究院 | Call implementation method, device and terminal for circuit switched fallback |
| CN109246719B (en) * | 2017-04-27 | 2021-02-05 | 展讯通信（上海）有限公司 | Wireless communication method, base station, and computer-readable storage medium |
| US20210282064A1 (en) * | 2017-06-30 | 2021-09-09 | Intel Corporation | High-speed mobility communication systems and methods |
| CN109309940B (en) * | 2017-07-28 | 2020-10-02 | 展讯通信（上海）有限公司 | Service control method, device, multi-card mobile terminal and storage medium |
| CA3066827C (en) * | 2017-08-04 | 2023-03-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Paging failure processing method, access network device, and core network device |
| WO2019061431A1 (en) * | 2017-09-30 | 2019-04-04 | 深圳市云中飞网络科技有限公司 | Method and device for detecting fallback result of csfb, and computer storage medium |
| CN108064461B (en) * | 2017-09-30 | 2021-01-08 | 深圳市欢太科技有限公司 | CSFB (Circuit switched Fall Back) fall result detection method and device and computer storage medium |
| CN111970737B (en) * | 2020-08-17 | 2023-06-27 | 努比亚技术有限公司 | Call control method, device and computer readable storage medium |
| CN113242583B (en) * | 2021-06-21 | 2023-10-13 | 维沃移动通信有限公司 | Calling method, terminal and network equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101472310A (en) * | 2007-12-27 | 2009-07-01 | 华为技术有限公司 | Method, device and system for implementing reorientation in communication system |
| CN103916933A (en) * | 2012-12-31 | 2014-07-09 | 展讯通信（上海）有限公司 | Method and apparatus for realizing caller voice services |
| WO2014198047A1 (en) * | 2013-06-13 | 2014-12-18 | 华为技术有限公司 | Method, device, and system for network handover |
-
2016
- 2016-08-24 CN CN201610717463.9A patent/CN106162939B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101472310A (en) * | 2007-12-27 | 2009-07-01 | 华为技术有限公司 | Method, device and system for implementing reorientation in communication system |
| CN103916933A (en) * | 2012-12-31 | 2014-07-09 | 展讯通信（上海）有限公司 | Method and apparatus for realizing caller voice services |
| WO2014198047A1 (en) * | 2013-06-13 | 2014-12-18 | 华为技术有限公司 | Method, device, and system for network handover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106162939A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106162939B (en) | Method and device for establishing call connection | |
| KR101812046B1 (en) | Method for acquiring ue capability, terminal, and base station | |
| US11812503B2 (en) | Mobility management processing method and apparatus | |
| EP2512184B1 (en) | Process and apparatus for handling downlink transmission during network switching | |
| US10433175B2 (en) | Access control method, user equipment, and network device | |
| EP2200370B1 (en) | Method and network node for supporting voice communications in a mulit-RAT communication system | |
| US10142890B2 (en) | Method and system to minimize delay in circuit-switched fallback (CSFB) procedure | |
| CN110944366B (en) | Private network switching method, private network type notification method and device | |
| CN112333791B (en) | Network searching method, terminal and storage medium | |
| KR102510207B1 (en) | Method for handling attach reject message with #14 cause at user equipment | |
| US11490292B2 (en) | Transferring a data connection to a radio access network | |
| WO2011088728A1 (en) | Informing method and equipment for index parameter of access type/frequency of selection priority | |
| CN108696854B (en) | Calling method and terminal | |
| CN110505667B (en) | User terminal and method and device for processing circuit switching service in LTE system of user terminal | |
| CN102448045B (en) | Method and equipment for processing mobile management context | |
| CN111436161B (en) | Session management method and SMF entity | |
| EP3188541A1 (en) | Circuit-switching service processing method and terminal | |
| CN106714253B (en) | Circuit Switched Fallback (CSFB) flow processing method and device | |
| CN103747492A (en) | Method for accessing terminal into long-term evolution network and terminal | |
| CN115707048A (en) | Network access mode switching method and device, storage medium and electronic equipment | |
| EP2077006A2 (en) | Network support for non-compliant mobile terminals and core network nodes | |
| CN105744620A (en) | Circuit domain drop paging method and device | |
| CN106488520B (en) | Circuit domain fallback calling method and device | |
| CN113950013B (en) | Message sending and receiving method, equipment and medium | |
| WO2015184865A1 (en) | Method and system for recognizing circuit switched fallback service |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |