WO2017113556A1 - Method and device for selecting access network - Google Patents

Abstract

Disclosed is a method for selecting an access network, comprising: obtaining, when a call request initiated by a first terminal is received, network service information of at least two access networks on which a second terminal currently registers; selecting one from the at least two access networks as a target access network according to the network service information of the access networks on which the second terminal currently registers; and sending the call request to the second terminal over the selected target access network, such that the second terminal establishes a call connection with the first terminal over the target network. Also disclosed is a device for selecting an access network. By means of the embodiments of the present invention, the rates of call connection to a called party can be improved, thereby providing users with better network service quality and relieving the pressure on network services.

Description

Method and device for selecting access network

The present application claims priority to Chinese Patent Application No. 201511026890.4, entitled "A Method and Apparatus for Accessing the Access Network", which is filed on Dec. 30, 2015. In this application.

Technical field

The present invention relates to the field of electronic technologies, and in particular, to a method and an apparatus for selecting an access network.

Background technique

IMS (IP Multimedia Subsystem) is an application layer system built on a packet switched domain. In addition to supporting E-UTRAN (Evolved UMTS Terrestrial Radio Access Network), the evolved UMTS Terrestrial Radio Access Network ), UTRAN (UMTS Terrestrial Radio Access Network) and GERAN (GSM EDGE Radio Access Network, GSM/EDGE Radio Access Network) access, and support multiple other access technologies For example, Wireless Local Area Networks (WLAN) access and Wireless-Fidelity (WiFi) access. The current carrier is studying the function of implementing LTE (Long Term Evolution) voice call service VoLTE (Voice over LTE) and WiFi voice call service VoWiFi (Voice over WiFi).

In the prior art solution, for the calling terminal to camp on the circuit-switched CS access network and the VoLTE access network at the same time, the terminal or the user may select which access network to use to register and initiate the call, and the called terminal is simultaneously stationed. Remaining in the circuit-switched CS access network and the VoLTE access network, T-ADS (Terminated Access Domain Selection), by comparing SGSN (Serving GPRS SUPPORT NODE, GPRS service support node) and MME (Mobility Management Entity, mobility management module) The user in the last activity time to determine which network the user actually accesses. If the last activity time of the user saved by the MME is the latest, the called terminal selects the VoLTE access network to land. If the last active time of the user saved by the SGSN is the latest, the called terminal selects the CS access network to land. However, this method does not take into account the actual carrying capacity of the current network. For example, when congestion or failure occurs on a certain network, the called party may fail.

Summary of the invention

Embodiments of the present invention provide a method and an apparatus for selecting an access network. It can improve the called call rate, improve the quality of network services for users, and alleviate the pressure of network services.

An embodiment of the present invention provides a method for selecting an access network, including:

Obtaining network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal;

Determining, according to the network service information of the access network currently registered by the second terminal, an access network from the at least two access networks as the target access network;

Sending the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target access network.

The network service information includes the bearer capability provided by the access network for the second terminal, and the network service information of the access network currently registered by the second terminal is from the at least two Selecting an access network as the target access network in the access network includes:

Comparing the bearer capabilities provided by the second terminal to the at least two access networks respectively;

And selecting, as the target access network, an access network that has the largest bearer capability provided by the second terminal in the at least two access networks.

The network service information includes network quality provided by the access network for the second terminal, and the network service information of the access network currently registered by the second terminal is from the at least two types. Selecting an access network as the target access network in the access network includes:

Comparing, respectively, the network quality provided by the second terminal to the at least two access networks;

And selecting, as the target access network, an access network that is optimal for the network quality provided by the second terminal in the at least two access networks.

The network service information of the at least two access networks currently registered by the second terminal is obtained when the first terminal initiates a call request.

When receiving the call request initiated by the first terminal, sending a query request to the service database, so that the service database queries the network service letter of the at least two access networks according to the query request. interest;

Receiving network service information of the at least two access networks returned by the service database.

The access network includes a VoLTE network, a VoWIFI network, and a CS network.

Correspondingly, an embodiment of the present invention provides a device for selecting an access network, including:

An information acquiring module, configured to acquire network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal;

a network selection module, configured to select one access network from the at least two access networks as the target access network according to the network service information of the access network currently registered by the second terminal;

And a request forwarding module, configured to forward the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target network.

The network service information includes a bearer capability provided by the access network for the second terminal, where the network selection module is specifically configured to:

Comparing the bearer capabilities provided by the second terminal to the at least two access networks respectively;

And selecting, as the target access network, an access network that has the largest bearer capability provided by the second terminal in the at least two access networks.

The network service information includes the network quality that the access network provides for the second terminal, and the network selection module is specifically configured to:

Comparing, respectively, the network quality provided by the second terminal to the at least two access networks;

And selecting, as the target access network, an access network that is optimal for the network quality provided by the second terminal in the at least two access networks.

The information acquiring module includes:

a request sending unit, configured to send a query request to the service database when the call request initiated by the first terminal is received, so that the service database queries the network service information of the at least two access networks according to the query request;

And an information receiving unit, configured to receive network service information of the at least two access networks returned by the service database.

The access network includes a VoLTE network, a VoWIFI network, and a CS network.

The embodiment of the present invention firstly obtains network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal, and then according to the network of the access network currently registered by the second terminal. Service information, selecting one access network from at least two access networks as the target access network; finally, sending a call request to the second terminal on the selected target access network, so that the second terminal accesses the network through the target Establish a call connection with the first terminal. Thereby, the called call rate is improved, the user is improved with higher network service quality, and the pressure of the network service can be alleviated.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a flow chart of a first embodiment of a method for selecting an access network according to the present invention;

2 is a schematic structural diagram of an access network selection system according to an embodiment of the present invention;

3 is a flow chart of a second embodiment of a method for selecting an access network according to the present invention;

4 is a schematic structural diagram of an apparatus for selecting an access network according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an information acquiring module in an apparatus according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Please refer to FIG. 1. FIG. 1 is a flowchart of a first embodiment of a method for selecting an access network according to the present invention. As shown in the figure, the execution subject in the embodiment of the present invention is a service server, and the method in the embodiment of the present invention includes:

S101. Acquire network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal.

In a specific implementation, when receiving the call request initiated by the first terminal, sending a query request to the service database, so that the service database queries the network service information of the at least two access networks according to the query request; Determining network service information of the at least two access networks returned by the service database. The access network includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network.

As shown in FIG. 2, the entire service system can be divided into four layers, including a service processing layer, an IMS session control, a bearer network, and an access network. Each layer can handle different data services. First, the first terminal initiates a call request for the second terminal (the number carrying the second terminal) through the current access network (such as the VoLTE network), and the S-CSCF (S-Call Session Control Function) to which the first terminal belongs. After receiving the call request, the network element queries the I-CSCF network element to which the second terminal belongs according to the number of the second terminal, and then forwards the call request to the I-CSCF to which the queried second terminal belongs (I-Call Session Control). The network element, after receiving the call message, the I-CSCF network element queries the HLR/HSS database for the access network currently registered by the second terminal and the S-CSCF network element to which the second terminal belongs, and further belongs to the second terminal. The S-CSCF network element sends a call request to the MMTel AS/SCC AS service server, and the MMTel AS/SCC AS service server queries the HLR/HSS database for the network service information of the access network currently registered by the second terminal.

It should be noted that the HLR/HSS database stores the registration status of the second terminal currently in each access network, and the HLR/HSS database initiates a query request for the network domain selection information T-ADS to the access network currently registered by the second terminal. The currently registered access network of the second terminal returns the respective T-ADS information and network service information to the HLR/HSS database.

S102. Select an access network from the at least two access networks as the target access network according to the network service information of the access network currently registered by the second terminal.

In a specific implementation, the network service information includes a bearer capability provided by the access network for the second terminal, and the bearer capability provided by the second terminal by the at least two access networks may be respectively performed. Comparing; selecting, as the target access network, an access network that has the greatest bearer capability provided by the second terminal in the at least two access networks.

Optionally, the network service information includes network quality provided by the access network for the second terminal, and comparing network quality provided by the at least two access networks to the second terminal respectively Selecting an optimal network quality for the second terminal in the at least two access networks Accessing the network as the target access network.

S103. Send the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target access network.

For example, the access network currently registered by the second terminal includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network. If the service server determines that the network service information of the current VoLTE access network is optimal, it can be connected in VoLTE. After the call request is forwarded to the second terminal, the second terminal can determine that the network service information of the current VoLTE access network is optimal, and establish a call connection with the first terminal through the VoLTE access network.

In the embodiment of the present invention, first, when receiving the call request initiated by the first terminal, acquiring network service information of at least two access networks currently registered by the second terminal; and then according to the access network currently registered by the second terminal Network service information, selecting one of the at least two access networks as the target access network; finally, sending a call request to the second terminal on the selected target access network, so that the second terminal accesses through the target The network establishes a call connection with the first terminal. Thereby, the called call rate is improved, the user is improved with higher network service quality, and the pressure of the network service can be alleviated.

Please refer to FIG. 3. FIG. 3 is a flowchart of a second embodiment of a method for selecting an access network according to the present invention. As shown in the figure, the execution subject in the embodiment of the present invention is a service server, and the method in the embodiment of the present invention includes:

S301. When receiving a call request initiated by the first terminal, obtain network service information of at least two access networks currently registered by the second terminal.

In a specific implementation, when receiving the call request initiated by the first terminal, sending a query request to the service database, so that the service database queries the network service information of the at least two access networks according to the query request; Determining network service information of the at least two access networks returned by the service database. The access network includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network.

As shown in FIG. 2, the entire service system can be divided into four layers, including a service processing layer, an IMS session control, a bearer network, and an access network. Each layer can handle different data services. First, the first terminal initiates a call request for the second terminal (the number carrying the second terminal) through the current access network (such as the VoLTE network), and the S-CSCF to which the first terminal belongs (S-Call Session Control) After receiving the call request, the network element queries the I-CSCF network element to which the second terminal belongs according to the number of the second terminal, and then forwards the call request to the I-CSCF to which the queried second terminal belongs (I-Call Session). a control element, the network element, after receiving the call message, the I-CSCF network element queries the HLR/HSS database for the access network currently registered by the second terminal and the S-CSCF network element to which the second terminal belongs, and further the second terminal belongs to The S-CSCF network element sends a call request to the MMTel AS/SCC AS service server, and the MMTel AS/SCC AS service server queries the HLR/HSS database for the network service information of the access network currently registered by the second terminal.

It should be noted that the HLR/HSS database stores the registration status of the second terminal currently in each access network, and the HLR/HSS database initiates a query request for the network domain selection information T-ADS to the access network currently registered by the second terminal. The currently registered access network of the second terminal returns the respective T-ADS information and network service information to the HLR/HSS database.

S302. Compare the bearer capability provided by the access network to the second terminal, and the network quality provided by the access network to the second terminal, and compare the results from the at least two access networks according to the comparison result. One access network is selected as the target access network.

In a specific implementation, the network service information includes a bearer capability provided by the access network for the second terminal, and a network quality provided by the access network for the second terminal. An access network that provides the second terminal with the highest bearer capability and the provided network quality optimal in the at least two access networks may be selected as the target access network.

S303. Send the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target access network.

For example, the access network currently registered by the second terminal includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network. If the service server determines that the network service information of the current VoLTE access network is optimal, it can be connected in VoLTE. The call request is forwarded to the second terminal on the network. After receiving the call request, the second terminal determines that the network service information of the current VoLTE access network is optimal, and establishes a call connection with the first terminal through the VoLTE access network.

In the embodiment of the present invention, first, when receiving the call request initiated by the first terminal, acquiring network service information of at least two access networks currently registered by the second terminal; and then according to the access network currently registered by the second terminal Network service information, selecting one of the at least two access networks as the target access network; finally, sending a call request to the second terminal on the selected target access network, so that The second terminal establishes a call connection with the first terminal through the target access network. Thereby, the called call rate is improved, the user is improved with higher network service quality, and the pressure of the network service can be alleviated.

Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of an apparatus for selecting an access network according to an embodiment of the present invention. As shown in the figure, the device in the embodiment of the present invention includes:

The information obtaining module 401 is configured to acquire network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal.

In a specific implementation, as shown in FIG. 5, the information obtaining module 401 may further include:

The request sending unit 501 is configured to: when receiving the call request initiated by the first terminal, send a query request to the service database, so that the service database queries the network service information of the at least two access networks according to the query request. .

The information receiving unit 502 is configured to receive network service information of the at least two access networks returned by the service database. The access network includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network.

As shown in FIG. 2, the entire service system can be divided into four layers, including a service processing layer, an IMS session control, a bearer network, and an access network. Each layer can handle different data services. First, the first terminal initiates a call request for the second terminal (the number carrying the second terminal) through the current access network (such as the VoLTE network), and the S-CSCF (S-Call Session Control Function) to which the first terminal belongs. After receiving the call request, the network element queries the I-CSCF network element to which the second terminal belongs according to the number of the second terminal, and then forwards the call request to the I-CSCF to which the queried second terminal belongs (I-Call Session Control). The network element, after receiving the call message, the I-CSCF network element queries the HLR/HSS database for the access network currently registered by the second terminal and the S-CSCF network element to which the second terminal belongs, and further belongs to the second terminal. The S-CSCF network element sends a call request to the MMTel AS/SCC AS service server, and the MMTel AS/SCC AS service server queries the HLR/HSS database for the network service information of the access network currently registered by the second terminal.

It should be noted that the HLR/HSS database stores the registration status of the second terminal currently in each access network, and the HLR/HSS database initiates a query request for the network domain selection information T-ADS to the access network currently registered by the second terminal. The currently registered access network of the second terminal returns the respective T-ADS information and network service information to the HLR/HSS database.

The network selection module 402 is configured to select one access network from the at least two access networks as the target access network according to the network service information of the access network currently registered by the second terminal.

In a specific implementation, the network service information includes a bearer capability provided by the access network for the second terminal, and the bearer capability provided by the second terminal by the at least two access networks may be respectively performed. Comparing; selecting, as the target access network, an access network that has the greatest bearer capability provided by the second terminal in the at least two access networks.

Optionally, the network service information includes network quality provided by the access network for the second terminal, and comparing network quality provided by the at least two access networks to the second terminal respectively And selecting, as the target access network, an access network that is optimal for the network quality provided by the second terminal in the at least two access networks. In addition, an access network that provides the second terminal with the highest bearer capability and the provided network quality is selected as the target access network in the at least two access networks.

The request forwarding module 403 is configured to forward the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target network. .

For example, the access network currently registered by the second terminal includes a VoLTE network, a VoWIFI network, and a CS (2G/3G/4G) network. If the service server determines that the network service information of the current VoLTE access network is optimal, it can be connected in VoLTE. The call request is forwarded to the second terminal on the network. After receiving the call request, the second terminal determines that the network service information of the current VoLTE access network is optimal, and establishes a call connection with the first terminal through the VoLTE access network.

In the embodiment of the present invention, first, when receiving the call request initiated by the first terminal, acquiring network service information of at least two access networks currently registered by the second terminal; and then according to the access network currently registered by the second terminal Network service information, selecting one of the at least two access networks as the target access network; finally, sending a call request to the second terminal on the selected target access network, so that the second terminal accesses through the target The network establishes a call connection with the first terminal. Thereby, the called call rate is improved, the user is improved with higher network service quality, and the pressure of the network service can be alleviated.

It should be noted that, for the foregoing various method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not described. The order of the actions is limited, as some steps may be performed in other orders or simultaneously in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related descriptions of other embodiments.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or optical disk.

The content downloading method and the related device and system provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the present invention are described in the specific examples. The description of the above embodiments is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for the person of ordinary skill in the art, according to the idea of the present invention, there are some changes in the specific embodiment and the scope of application. In summary, the content of the specification should not be understood. To limit the invention.

Claims (10)

A method for selecting an access network, characterized in that the method comprises: Obtaining network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal; Determining, according to the network service information of the access network currently registered by the second terminal, an access network from the at least two access networks as the target access network; Sending the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target access network. The method according to claim 1, wherein the network service information comprises a bearer capability provided by the access network for the second terminal, and the access network according to the second terminal is currently registered. The network service information, selecting one of the at least two access networks as the target access network includes: Comparing the bearer capabilities provided by the second terminal to the at least two access networks respectively; And selecting, as the target access network, an access network that has the largest bearer capability provided by the second terminal in the at least two access networks. The method according to claim 1, wherein the network service information comprises a network quality provided by the access network for the second terminal, and the access network is currently registered according to the second terminal. The network service information, selecting one of the at least two access networks as the target access network includes: Comparing, respectively, the network quality provided by the second terminal to the at least two access networks; And selecting, as the target access network, an access network that is optimal for the network quality provided by the second terminal in the at least two access networks. A method according to any one of claims 1 to 3, wherein said receiving The network service information of the at least two access networks currently registered by the second terminal is: When receiving the call request initiated by the first terminal, sending a query request to the service database, so that the service database queries the network service information of the at least two access networks according to the query request; Receiving network service information of the at least two access networks returned by the service database. The method of claim 4, wherein the access network comprises a VoLTE network, a VoWIFI network, and a CS network. A device for selecting an access network, characterized in that the device comprises: An information acquiring module, configured to acquire network service information of at least two access networks currently registered by the second terminal when receiving the call request initiated by the first terminal; a network selection module, configured to select one access network from the at least two access networks as the target access network according to the network service information of the access network currently registered by the second terminal; And a request forwarding module, configured to forward the call request to the second terminal on the selected target access network, so that the second terminal establishes a call connection with the first terminal by using the target network. The device according to claim 6, wherein the network service information comprises a bearer capability provided by the access network for the second terminal, and the network selection module is specifically configured to: Comparing the bearer capabilities provided by the second terminal to the at least two access networks respectively; And selecting, as the target access network, an access network that has the largest bearer capability provided by the second terminal in the at least two access networks. The device according to claim 6, wherein the network service information comprises a network quality provided by the access network for the second terminal, and the network selection module is specifically configured to: Comparing the network quality provided by the at least two access networks to the second terminal respectively Relative And selecting, as the target access network, an access network that is optimal for the network quality provided by the second terminal in the at least two access networks. The device according to any one of claims 6-8, wherein the information acquisition module comprises: a request sending unit, configured to send a query request to the service database when the call request initiated by the first terminal is received, so that the service database queries the network service information of the at least two access networks according to the query request; And an information receiving unit, configured to receive network service information of the at least two access networks returned by the service database. The apparatus of claim 9, wherein the access network comprises a VoLTE network, a VoWIFI network, and a CS network.

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