CN106954249B - Network mode negotiation method, device and system - Google Patents
Network mode negotiation method, device and system Download PDFInfo
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- CN106954249B CN106954249B CN201710321764.4A CN201710321764A CN106954249B CN 106954249 B CN106954249 B CN 106954249B CN 201710321764 A CN201710321764 A CN 201710321764A CN 106954249 B CN106954249 B CN 106954249B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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Abstract
The invention discloses a network mode negotiation method, a device and a system, wherein the method comprises the following steps: receiving a registration request sent by a terminal, wherein the registration request carries a default network mode of the terminal; determining a preferred network mode supported by the terminal according to the current environment; judging whether the default network mode is the preferred network mode; if yes, completing registration; if not, rejecting the registration request and issuing the preferred network mode to the terminal. The method for dynamically selecting the network mode is changed from the method for fixing the terminal network mode, the preferred network mode in the environment can be determined, and the network can be connected through the preferred network mode, so that the terminal uses the optimal network mode to access the network in each application environment, the effect of accessing the network is improved, and the user experience is improved; the invention also discloses a network mode negotiation device and a system, which can also realize the technical effect.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a network mode negotiation method, apparatus, and system.
Background
With the popularization of mobile terminals, the development of wireless networks is faster and faster, and the well-known 4G network with extremely wide coverage range is developed to a 5G network with more new characteristics. In the evolution of 4G networks to 5G networks, the 3GPP standards define that there may be multiple network modes in a 5G network. The terminal connection uses a network, and the network mode determines the way in which the terminal connects to the network, and the network modes are defined by the 3GPP standard.
For example, in mode 3, the 5G base station accesses the 4G core network with the 4G base station as an anchor point, can utilize the wide coverage of 4G, and can use the 5G network in a wide range; in the mode 7, the 5G base station accesses the 5G network by taking the upgraded 4G base station as an anchor point; in mode 2, the 5G base station is directly accessed into the 5G core network. The access 5G core network can make full use of the new characteristics of the 5G network, but the coverage of the 5G network is not very wide in the initial construction period, so the terminal selects an appropriate network mode to connect and use the network according to the environment.
At present, what network mode is used by a terminal is fixedly set in the terminal, and the set network mode cannot be changed, so that certain inconvenience is caused to the use of a 5G network. For example, in the early years, in order to fully consider wide coverage, the terminal can be connected with a 5G network in a wide range, the terminal is set to use the network mode 3, but when the environment is changed to be capable of directly accessing the 5G network, the network mode using mode 2 or mode 7 still cannot be changed; for another example, in order to fully utilize the new characteristics of the 5G network, the terminal is set to mode 2 or mode 7, but when there is no coverage of the 5G base station due to environmental restrictions, the 5G network cannot be used. Therefore, a fixed network mode is set for the terminal, and when the application environment changes, the network mode is changed to an optimal network mode, which may cause certain limitation to the use of the 5G network.
Therefore, when the application environment changes, how the terminal can connect to the network using the optimal network mode in the current environment is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a network mode negotiation method, a device and a system, which solve the problem of how a terminal can use the optimal network mode in the current environment to connect a network when the application environment is changed.
In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:
a network mode negotiation method based on a network side comprises the following steps:
receiving a registration request sent by a terminal, wherein the registration request carries a default network mode of the terminal;
determining a preferred network mode supported by the terminal according to the current environment;
judging whether the default network mode is the preferred network mode;
if yes, completing registration; if not, rejecting the registration request and issuing the preferred network mode to the terminal.
Preferably, the determining the preferred network mode supported by the terminal according to the current environment includes:
and determining the preferred network mode supported by the terminal according to the network mode supported by the network side, all the network modes supported by the terminal and the operator policy carried in the registration request.
A network mode negotiation management apparatus, comprising:
a receiving unit, configured to receive a registration request sent by a terminal, where the registration request carries a default network mode of the terminal;
a preferred network mode determining unit, configured to determine a preferred network mode supported by the terminal according to a current environment;
a judging unit, configured to judge whether the default network mode is the preferred network mode, and if yes, complete registration;
and the issuing unit is used for issuing the preferred network mode to the terminal when the default network mode is not the preferred network mode.
Preferably, the preferred network mode determining unit determines the preferred network mode supported by the terminal according to the network mode supported by the network side, all the network modes supported by the terminal carried in the registration request, and the operator policy.
A network mode negotiation method based on a terminal comprises the following steps:
initiating a registration request to a network side, wherein the registration request carries a default network mode of the terminal;
judging whether a preferred network mode issued by the network side when the default network mode is inconsistent with the preferred network mode supported by the terminal is received;
if not, the registration is successful; and if so, re-initiating a registration request to the network side according to the preferred network mode.
Preferably, the re-initiating the registration request to the network side according to the preferred network mode includes: and replacing the default network mode with the preferred network mode, and initiating a registration request to the network side again according to the preferred network mode.
A terminal, comprising:
a first registration unit, configured to initiate a registration request to a network side, where the registration request carries a default network mode of the terminal;
a judging unit, configured to judge whether a preferred network mode issued when the default network mode of the network side is inconsistent with the preferred network mode supported by the terminal is received;
and the second registration unit is used for initiating a registration request to the network side again according to the preferred network mode when the preferred network mode is received.
Preferably, the second registration unit includes:
a replacing module, configured to replace the default network mode with the preferred network mode when the preferred network mode is received;
and the registration module is used for initiating a registration request to the network side again according to the preferred network mode.
A network mode negotiation system, comprising: the network mode management device and the terminal.
According to the above scheme, the network mode negotiation method, device and system provided by the embodiment of the invention comprise: receiving a registration request sent by a terminal, wherein the registration request carries a default network mode of the terminal; determining a preferred network mode supported by the terminal according to the current environment; judging whether the default network mode is the preferred network mode; if yes, completing registration; if not, rejecting the registration request and issuing the preferred network mode to the terminal.
The invention changes the method of the connection mode of the fixed terminal into the method of dynamically selecting the network mode, and solves the problem that the network experience of the user cannot be improved because the method cannot adapt to the current environment to use the preferred network mode when the application environments are different. When the environments are different, the method provided by the invention can determine the preferred network mode in the environment and can connect the network through the preferred mode, so that the terminal uses the optimal network mode in each application environment, the effect of accessing the network is improved, and the user experience is improved. The invention also discloses a network mode negotiation device and a system, which can also realize the technical effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a network mode negotiation method disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a network mode negotiation management apparatus according to an embodiment of the present invention;
fig. 3 is a flowchart of a network mode negotiation method of a terminal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal disclosed in the embodiment of the present invention;
FIG. 5 is a flowchart of an embodiment of a specific application disclosed in the embodiments of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a network mode negotiation method, a device and a system, which solve the problem of how a terminal can use the optimal network mode in the current environment to connect a network when the application environment is changed.
Referring to fig. 1, an embodiment of a network mode negotiation method based on a network side provided in the embodiment of the present invention specifically includes the following steps:
s101, receiving a registration request sent by a terminal, wherein the registration request carries a default network mode of the terminal.
In the embodiment of the present invention, the default network mode of the terminal may be statically configured in advance in the terminal, or may be issued to the terminal by the network side.
The registration request simultaneously carries all network modes supported by the terminal, the network modes supported by the terminal can be a plurality of selectable network modes which are set in a network mode list by the terminal, and the hardware or software capability of the terminal determines which network modes are supported by the terminal.
And S102, obtaining the preferred network mode supported by the terminal according to the current environment.
Specifically, the obtaining of the preferred network mode supported by the terminal according to the current environment includes:
and determining the preferred network mode supported by the terminal according to the network mode supported by the network side, all the network modes supported by the terminal and the operator policy carried in the registration request.
It should be noted that the operator policy is to determine a suitable network mode according to the distribution of the base stations and the tendency of the operator.
For example: if the upgraded 4G base stations are distributed more in the current environment and the operator encourages the user to access the 5G core network, the network mode 7 can be used as the preferred network mode according to the use tendency of the operator strategy in the current environment; if the network modes supported by the terminal include network mode 3 and network mode 7, and the network modes supported by the network side include network mode 2 and network mode 7, the network mode 7 may be used as the preferred network mode according to the network mode support situation in the operator policy.
Therefore, the determination of the preferred network mode is determined according to the current environment where the terminal is located, and the use of the preferred network mode in the current environment can improve the effect of the user accessing the network and improve the experience of using the network.
S103, judging whether the preferred network mode is consistent with the default network mode, if so, executing a step S104; if not, go to S105.
And S104, completing registration.
When the network side determines that the network mode in the registration request is the preferred network mode after judging, the whole registration process can be completed.
S105, rejecting the registration request of the terminal, and sending the preferred network mode to the terminal.
When the network side judges and determines that the network mode in the registration request is not the preferred network mode, the registration request is rejected first, and the registration is interrupted. And the preferred network mode determined in the step S102 is issued to the terminal, so that the terminal uses the preferred network mode to reinitiate the registration.
Specifically, the network side compares the preferred network mode determined in S102 with the default network mode carried in the terminal registration request, and if the preferred network mode is consistent with the default network mode, the current default mode of the terminal is the preferred network mode, and the method enters S104; if not, the network mode carried in the terminal initiated registration request is not the preferred network mode, and needs to be changed to the preferred network mode, and the process goes to S105.
It should be noted that, different network modes correspond to different access networks in different manners, and therefore, corresponding network side devices may also be different, for example, in network mode 3, a 5G base station accesses a 4G core network with a 4G base station as an anchor point, and therefore, when sending a registration request, the registration request should be sent to an MME (mobility management entity) in the 4G core network; the network mode 7 is an access 5G core network, and therefore when the network mode 7 is used, a registration request should be sent to an AMF (access and mobility management function) in the 5G core network.
When the terminal sends the registration request again with the preferred network mode, the device capable of receiving the registration request in the network mode is correspondingly changed according to the change of the network mode, and the step of determining the preferred network mode supported by the terminal may not be performed any more, because the current environment is not changed, that is, the network mode supported by the network side, the network mode supported by the terminal, and the operator policy are not changed, and the preferred mode is not changed, it may only be determined whether the network mode in the registration request is the preferred network mode supported by the terminal determined in S102, and if so, the registration is completed. This saves the step of re-registration, and thus registration efficiency can be improved.
Therefore, the method provided by the embodiment can dynamically negotiate the network mode to access the network by registering, determining the preferred network mode according to the current environment and issuing the preferred network mode to the terminal, so that the corresponding network mode can be used according to different environments, and the user network experience problem is improved.
In the following, a network mode negotiation management device provided in an embodiment of the present invention is introduced, and a network connection management device described below and a network mode negotiation method based on a network side described above may be referred to each other.
Referring to fig. 2, the network mode negotiation management apparatus provided in the embodiment of the present invention includes a receiving unit 201, a preferred network mode determining unit 202, a determining unit 203, and a sending unit 204, and a connection manner is as shown in fig. 2.
A receiving unit 201, configured to receive a registration request sent by a terminal, where the registration request carries a default network mode of the terminal;
a preferred network mode determining unit 202, configured to determine a preferred network mode supported by the terminal according to a current environment; a determining unit 203, configured to determine whether the default network mode is the preferred network mode, and if so, complete registration;
a sending unit 204, configured to send the preferred network mode to the terminal when the network mode is not the preferred network mode.
Specifically, after receiving a registration request sent by a terminal and carrying the terminal default network mode and all network modes supported by the terminal, the receiving unit 201 sends the default network mode to the determining unit 203, all network modes supported by the terminal are sent to the preferred network mode determining unit 202, the preferred network mode determining unit 202 determines the terminal preferred network mode according to the network mode supported by the terminal, the network mode supported by the network side and the current operator policy, the determining unit 203 receives the default network mode, determines whether the preferred network mode is consistent with the default network mode according to the preferred network mode, that is, determines whether the default network mode in the terminal registration request is the preferred network mode, if yes, completes the registration, if not, rejects the registration, and interrupts the registration request, and sends the judgment result and the preferred network mode to the sending unit 204, and the sending unit sends the preferred network mode to the terminal after receiving the judgment result and the preferred network mode.
It should be noted that, the preferred network mode determining unit 202 may determine the preferred network mode supported by the terminal according to the network mode supported by the network side, all the network modes supported by the terminal carried in the registration request, and the operator policy.
Therefore, the network mode negotiation management apparatus provided in this embodiment may implement accessing a network by using a method of dynamically negotiating a network mode by registering through the registration unit 201, determining a preferred network mode of a current environment according to the preferred network mode determining unit 202, and issuing a preferred network mode to a terminal through the issuing unit 204, so that when the environments are different, the corresponding network mode may be used, and the user network experience problem may be improved.
Referring to fig. 3, an embodiment of a network mode negotiation method based on a terminal according to an embodiment of the present invention specifically includes the following steps:
s301, a registration request is sent to a network side, and the registration request carries the default network mode of the terminal.
S302, judging whether receiving the preferred network mode issued by the network side when the default network mode is inconsistent with the preferred network mode supported by the terminal.
If the preferred network mode is not received, go to step 303; if the preferred network mode is received, step 304 is entered.
Specifically, the preferred network mode is issued by the network side to the terminal when the default network mode is inconsistent with the preferred network supported by the terminal, and if the preferred network mode is received, it indicates that the current default network mode is not the preferred network mode, and if the preferred network mode is not received, it indicates that the current default network mode is preferred.
Therefore, the network mode which is used by the terminal for accessing the network at last is the preferred network mode in the current environment, and the effect of accessing the network can be improved in the current environment and the user experience can be improved through the preferred network mode.
S303, the registration is successful.
Specifically, when the preferred network mode is not received, it indicates that the current default network mode is determined as the preferred mode on the network side, so that the whole registration process can be successfully completed without subsequent operations.
S304, a registration request is initiated to the network side again according to the preferred network mode.
It should be noted that, when initiating registration to the network side again after receiving the preferred network mode, the location where the registration request is sent is changed correspondingly according to the change of the network mode, that is, when carrying the preferred network mode, the registration request is sent to the network side device corresponding to the preferred network mode. Moreover, when sending the registration request to the network side again, the network side may only carry the preferred network mode, and does not need to carry all the supported network modes, because the current environment is not changed, the network side may not determine the preferred network mode again, and therefore may not send all the network modes supported by the terminal to the network side any more. Therefore, the step of determining the preferred network mode in the process of re-registering can be omitted, and the registering efficiency is improved.
In addition, the re-initiating the registration request to the network side according to the preferred network mode includes: and replacing the default network mode with the preferred network mode, and initiating a registration request to the network side again according to the preferred network mode. After receiving the preferred network mode, the preferred network mode can be set as the default network mode of the terminal, and then registration is initiated to the network side. Therefore, when the network is connected next time in the current environment, the preferred network mode is directly used for registration without changing the network mode again, and the registration time is saved.
Therefore, the method provided by the embodiment of the invention can determine whether the registration is successful or whether the network mode needs to be changed by registering to the network side and according to whether the network side returns the current environment preferred network mode and the preferred network mode content, thereby realizing dynamic negotiation of the network mode to access the network, and improving the network experience problem of users by using the corresponding network mode according to different environments.
In the following, a terminal according to an embodiment of the present invention is introduced, and a terminal described below and a network mode negotiation method based on the terminal described above may refer to each other.
As shown in fig. 4, a terminal according to an embodiment of the present invention includes a first registration unit 401, a determination unit 402, and a second registration unit 403.
A first registration unit 401, configured to initiate a registration request to a network side, where the registration request carries a default network mode of the terminal;
a determining unit 402, configured to determine whether a preferred network mode delivered when the default network mode of the network side is inconsistent with the preferred network mode supported by the terminal is received.
A second registration unit 403, configured to, when receiving the preferred network mode, initiate a registration request to the network side again according to the preferred network mode.
After the first registration unit 401 sends a registration request carrying a current default network mode to the network side, the determining unit 402 determines whether a preferred network mode is received, where the preferred network mode is issued by the network side to the terminal when the default network mode is inconsistent with a preferred network supported by the terminal, and if the preferred network mode is received, it indicates that the current default network mode is not the preferred network mode, the preferred mode is sent to the second registration unit 403, and the second registration unit 403 carries the preferred mode to initiate registration to the network side again; if not, indicating that the current default network mode is preferred, registration is complete.
The second registration unit 403 includes:
a replacing module, configured to replace the default network mode with the preferred network mode when the preferred network mode is received;
and the registration module is used for initiating a registration request to the network side again according to the preferred network mode.
Specifically, the second registration unit 403 may set the preferred network mode to a default network mode of the terminal before initiating registration. And when the second registration unit 403 initiates registration, it may not carry all network modes supported by the terminal. Therefore, when the network is connected next time in the current environment, the preferred network mode is directly used for registration without changing the network mode again, and the registration time is saved.
Therefore, the method provided by the embodiment of the present invention may initiate registration to the network side through the registration unit 401, and the determination unit 402 determines whether the registration is successful or whether the network mode needs to be changed according to whether the network side returns the current environment preferred network mode and the preferred network mode content, thereby implementing dynamic negotiation of the network mode to access the network, and using the corresponding network mode according to different environments, thereby improving the user network experience problem.
The present embodiment provides a network mode negotiation system, which includes the terminal and the network mode negotiation management apparatus described in the foregoing embodiments.
Referring to fig. 5, the present invention discloses a specific application embodiment of a method for connecting a 5G network, which specifically includes:
1, the current default network mode of the terminal is network mode 3, and the terminal is the terminal in the embodiment;
2, the terminal sends an attach request, namely a registration request, to the MME by using the network mode 3, wherein the attach request carries the current default network mode 3 and all 5G network modes supported by the terminal;
3, the MME determines that the current preferred mode of the terminal is the network mode 7 according to the 5G network mode supported by the network side, the 5G network mode supported by the terminal, and the operator policy, that is, the current access network should use the network mode 7;
4, the MME returns a 4G attachment response to the terminal, wherein the attachment request is rejected, and a preferred network mode is issued to prompt a mode 7 to be used;
5, the terminal sets the current network mode as a network mode 7;
6, the terminal initiates an attachment request to the AMF by using a network mode 7;
7, the terminal completes the subsequent attaching process through the network mode 7, namely, the whole registration process is completed.
Therefore, in the embodiment of the present invention, when the terminal initiates registration to the MME using the current network mode, the MME determines that the current network mode is not the preferred network mode in the current environment, so as to reject the registration request, and returns the prompt information with the preferred mode, and the terminal replaces the network mode according to the prompt, uses the preferred network mode, and initiates registration to the AMF again, thereby completing the registration process. Therefore, when the terminal uses the non-preferred network mode in the current environment, the network side can refuse the registration request and issue the preferred network mode, thereby achieving the dynamic negotiation network mode, realizing that the corresponding preferred network mode is used in each environment, improving the effect of accessing the network and improving the user experience.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A network mode negotiation method based on a network side is characterized by comprising the following steps:
receiving a registration request sent by a terminal, wherein the registration request carries a default network mode of the terminal; the network mode is a network mode in a 5G network defined by a 3GPP standard;
determining a preferred network mode supported by the terminal according to the current environment;
judging whether the default network mode is the preferred network mode;
if yes, completing registration; if not, rejecting the registration request and issuing the preferred network mode to the terminal;
wherein the determining the preferred network mode supported by the terminal according to the current environment comprises:
determining a preferred network mode supported by the terminal according to the network mode supported by the network side, all network modes supported by the terminal carried in the registration request and an operator policy; the operator strategy is to determine a suitable network mode according to the distribution situation of the base stations and the tendency of the operator.
2. A network mode negotiation management apparatus, comprising:
a receiving unit, configured to receive a registration request sent by a terminal, where the registration request carries a default network mode of the terminal; the network mode is a network mode in a 5G network defined by a 3GPP standard;
a preferred network mode determining unit, configured to determine a preferred network mode supported by the terminal according to a current environment;
a judging unit, configured to judge whether the default network mode is the preferred network mode, and if yes, complete registration;
the issuing unit is used for issuing the preferred network mode to the terminal when the default network mode is not the preferred network mode;
the preferred network mode determining unit determines the preferred network mode supported by the terminal according to the network mode supported by the network side, all the network modes supported by the terminal carried in the registration request and the operator policy; the operator strategy is to determine a suitable network mode according to the distribution situation of the base stations and the tendency of the operator.
3. A network mode negotiation method based on a terminal is characterized by comprising the following steps:
initiating a registration request to a network side, wherein the registration request carries a default network mode of the terminal; the network mode is a network mode in a 5G network defined by a 3GPP standard;
judging whether a preferred network mode issued by the network side when the default network mode is inconsistent with the preferred network mode supported by the terminal is received;
if not, the registration is successful; if yes, a registration request is initiated to the network side again according to the preferred network mode;
wherein, the re-initiating the registration request to the network side according to the preferred network mode includes: replacing the default network mode with the preferred network mode, and initiating a registration request to the network side again according to the preferred network mode; the preferred network mode is determined according to the network mode supported by the network side, all the network modes supported by the terminal carried in the registration request and the operator policy, and the operator policy is to determine a suitable network mode according to the distribution situation of the base station and the tendency of the operator.
4. A terminal, comprising:
a first registration unit, configured to initiate a registration request to a network side, where the registration request carries a default network mode of the terminal; the network mode is a network mode in a 5G network defined by a 3GPP standard;
a judging unit, configured to judge whether a preferred network mode issued when the default network mode of the network side is inconsistent with the preferred network mode supported by the terminal is received; the preferred network mode is determined according to a network mode supported by a network side, all network modes supported by the terminal and an operator policy carried in the registration request, and the operator policy is a suitable network mode determined according to the distribution situation of a base station and the tendency of an operator;
a second registration unit, configured to, when receiving the preferred network mode, initiate a registration request to a network side again according to the preferred network mode;
the second registration unit includes:
a replacing module, configured to replace the default network mode with the preferred network mode when the preferred network mode is received;
and the registration module is used for initiating a registration request to the network side again according to the preferred network mode.
5. A network mode negotiation system, comprising: a network mode negotiation management apparatus according to claim 2 and a terminal according to claim 4.
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| CN101242608A (en) * | 2008-01-29 | 2008-08-13 | 中兴通讯股份有限公司 | Method and system for mobile terminal to search high-priority public land mobile network |
| CN101668312A (en) * | 2009-10-10 | 2010-03-10 | 中兴通讯股份有限公司 | Method for selecting network standard and system therefor |
| CN103052143A (en) * | 2012-12-13 | 2013-04-17 | 中科创达软件股份有限公司 | Network selection method of dual mode card |
| CN104869595A (en) * | 2015-05-04 | 2015-08-26 | 小米科技有限责任公司 | Method and device for controlling data traffic |
| CN104955045A (en) * | 2015-06-12 | 2015-09-30 | 联想(北京)有限公司 | Access control method, device, terminal and system |
| CN104883703A (en) * | 2015-06-19 | 2015-09-02 | 宇龙计算机通信科技(深圳)有限公司 | Method and system for network type control, and terminal |
| CN106612542A (en) * | 2015-10-23 | 2017-05-03 | 展讯通信（上海）有限公司 | VoLTE terminal registration method and device |
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