WO2014206362A1

WO2014206362A1 - Method and device for returning to home network

Info

Publication number: WO2014206362A1
Application number: PCT/CN2014/081082
Authority: WO
Inventors: 刘海波
Original assignee: 华为终端有限公司
Priority date: 2013-06-29
Filing date: 2014-06-30
Publication date: 2014-12-31
Also published as: CN103402232B; CN103402232A

Abstract

Provided in an embodiment of the present invention are a method and device for returning to a home network. The method comprises: a terminal device receives an SIB19 sent by a network side device on a first network, the SIB19 carrying each neighboring frequency point of the first network and identifier information of an operator of each neighboring frequency point, and the first network being roamed onto by the terminal device and capable of providing voice service; the terminal device determines from the neighboring frequency points the frequency point used by a second network where the terminal device is located according to the identifier information of the operator of the second network where the terminal device is located and the identifier information of the operator of each neighboring frequency point, the second network not supporting voice service; the terminal device initiates a residing process to the second network on the determined frequency point. The technical solution of the present invention allows a terminal device to return to a home long term evolution (LTE) network, and solves the problems in the prior art of disconnection and low quality of service in the process of returning to the home TLE network.

Description

Method and device for re-homing network

This application claims priority to Chinese Patent Application No. 201310270079. 5, entitled "Method and Equipment for Re-Return to Network", which is incorporated by reference in this article. In the application.

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a method and a device for returning to a network. A Circuit Switched Fallback (CSFB) is a voice solution on a Long Term Evolution (LTE) network. The process based on CSFB is as follows: The terminal device resides on the LTE network and initiates a calling (Mobi le Origination, M0 for short) CSFB process or receives a called (Mobi le Termination, referred to as MT) CSFB process, and the network side performs redirection ( Redirection) or handover (hand over), the terminal device is switched from the LTE network to the second-generation/third-generation (2G/3G) communication network, and the terminal device performs voice service on the 2G/3G network, after the voice service ends. The terminal device may return to the LTE network reselection by the like (re _Se l _eC tion), or redirection switching mode. The re-election mode is the most commonly used. The 2G/3G network side sends the neighboring cell frequency to the terminal device through the System Information Block (SIB) 19 to enable the terminal device to reselect the LTE network. . In actual applications, because some operators do not develop 2G/3G networks, but directly develop LTE networks, they need to lease 2G/3G networks of other carriers to support CSFB. In this scenario, when the terminal devices complete voice services. After the LTE network is reselected according to the neighboring frequency in the SIB19, the LTE network of the operator to which the 2G/3G network belongs is selected by default. When the LTE network of the operator to which the 2G/3G network belongs is terminated, the terminal device is rejected. , resulting in dropped network and reduced service quality. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and a device for re-regressing a network, which are used to cause a terminal device to return The LTE network to the home network solves the problems of dropped network and low service quality caused by the LTE network in the prior art.

The first aspect provides a method for re-regressing a network, including:

The terminal device receives the system message block SIB19 sent by the network side device in the first network, where the SIB19 carries the identifier information of each neighboring cell frequency point of the first network and the operator of each neighboring cell frequency point. The first network is a network that the terminal device roams to and can perform a voice service, and the SIB 19 is that the network side device determines that the terminal device roaming to the first network is in the first After the network ends the voice service, it is sent;

Determining, by the terminal device, the terminal device attribution from the neighboring cell frequencies according to the identifier information of the operator to which the second network belongs to the terminal device and the identifier information of the operator to which the neighboring cell frequency belongs. a frequency point used by the second network, where the second network is a network that does not support voice services; and the terminal device initiates a camping process to the second network at the determined frequency point.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the identifier information of the operator to which the neighboring cell is located is the public land mobile network PL of the operator to which the neighboring cell belongs.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first network is a second generation 2G or a third generation 3G communication network; The second network is a Long Term Evolution (LTE) network.

The second aspect provides a method for re-regressing a network, including:

After determining that the terminal device roaming to the first network where the network side device is located ends the voice service in the first network, the network side device generates a system message block SIB19, where the SIB19 carries the first The identifier of the neighboring cell of the network and the identifier of the operator of the neighboring cell, and the first network is a network that can perform voice services;

The network side device sends the SIB 19 to the terminal device, so that the terminal device according to the identifier information of the operator to which the second network belongs to the terminal device and the operator of each neighboring frequency point belong to the operator Identifying, determining, from the neighboring frequency points, a frequency point used by the second network to which the terminal device belongs, and initiating a camping process to the second network at the determined frequency point; The second network is a network that does not support voice services.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the identifier information of the operator to which the neighboring cell is located is the public land mobile network PL of the operator to which the neighboring cell belongs.

In combination with the second aspect or the first possible implementation of the second aspect, the second aspect of the second aspect In a possible implementation manner, the first network is a second generation 2G or a third generation 3G communication network; and the second network is a long term evolution LTE network.

The third aspect provides a terminal device, including:

a receiving module, configured to receive a system message block SIB19 sent by the network side device in the first network, where the SIB19 carries the neighboring frequency points of the first network and the operator of each neighboring frequency point Identification information, the first network is a network that the terminal device roams to and can perform a voice service, and the SIB 19 is that the network side device determines that the terminal device roams to the first network The first network sends the voice service after it is sent;

a determining module, configured to determine, according to the identifier information of the operator to which the second network belongs, and the identifier information of the operator to which the neighboring frequency points belong, determine the terminal device from the neighboring frequency points a frequency point used by the second network to be in the network, the second network is a network that does not support voice services, and a camping initiation module is configured to initiate a camping process to the second network at the determined frequency point. With reference to the third aspect, in a first possible implementation manner of the third aspect, the identifier information of the operator to which the neighboring cell is located is the public land mobile network PL of the operator to which the neighboring cell belongs.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in the second possible implementation manner of the third aspect, the first network is a second generation 2G or a third generation 3G communication network; The second network is a Long Term Evolution (LTE) network.

The fourth aspect provides a network side device, including:

a generating module, configured to generate a system message block SIB19, where the SIB19 carries some after determining that the terminal device roaming to the first network where the network side device is located ends the voice service in the first network The first network in which the neighboring cell frequency points of the first network and the neighboring cell frequency points belong to the first network is a network that can carry out voice services;

a sending module, configured to send the SIB19 to the terminal device, so that the terminal device is based on the identifier information of the operator to which the second network belongs to the terminal device, and the operator of each neighboring frequency point belongs to the operator Identifying, determining, from the neighboring frequency points, a frequency point used by the second network to which the terminal device belongs, and initiating a camping process to the second network at the determined frequency point; The second network is a network that does not support voice services.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the identifier information of the operator to which the neighboring cell is located is the public land mobile network PL of the operator to which the neighboring cell belongs.

In combination with the fourth aspect or the first possible implementation of the fourth aspect, the second aspect of the fourth aspect In a possible implementation manner, the first network is a second generation 2G or a third generation 3G communication network; and the second network is a long term evolution LTE network. The method and device for re-regressing a network according to an embodiment of the present invention, the terminal device roams to a first network that can perform voice services, and performs voice service in the first network. After the voice service ends, the network side in the first network The device sends the SIB19 carrying the identifier information of the neighboring cell frequency point of the first network and the operator of the neighboring cell frequency point to the terminal device, and the terminal device according to the identifier information of the operator belonging to the second network to which the terminal device belongs and each The identification information of the operator of the neighboring cell frequency point, determining the frequency point used by the second network to which the terminal device belongs from the frequency points of the neighboring cells, and initiating the resident process to the second network at the determined frequency point, Return to the home network. Since the SIB 19 in the embodiment of the present invention carries the identification information of the operator to which the neighboring frequency points belong, the terminal device can determine the frequency used by the home network and initiate the resident to the home network, instead of the prior art. In this way, the home network of the operator of the roaming network is initiated by default, thereby solving the problems of dropped network and low service quality caused by the process of returning to the network. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

FIG. 1 is a flowchart of a method for re-regressing a network according to an embodiment of the present invention;

FIG. 2 is a flowchart of another method for re-regression to a network according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of another network side device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the following will be combined with the present invention. The embodiments of the present invention are clearly and completely described in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

FIG. 1 is a flowchart of a method for re-regressing a network according to an embodiment of the present invention. As shown in FIG. 1, the method includes:

The terminal device receives the SIB 19 sent by the network side device in the first network, where the SIB 19 carries the identifier information of each neighboring cell frequency of the first network and the operator of each neighboring cell frequency point, where the first network is a network that the terminal device roams to and can perform a voice service, where the SIB 19 is sent by the network side device after determining that the terminal device roaming to the first network ends the voice service in the first network. .

The terminal device determines, according to the identifier information of the operator to which the second network belongs, and the identifier information of the operator to which the neighboring cell frequency belongs, to determine the belonging of the terminal device from the neighboring cell frequencies. The frequency of the second network is used, and the second network is a network that does not support voice services.

103. The terminal device initiates a camping process to the second network at the determined frequency point.

In this embodiment, the terminal device belongs to the second network, the second network does not support the voice service, and the terminal device supports the CSFB. Therefore, when the terminal device needs to perform the voice service, the terminal device falls back from the second network to the first network. A network is a network that can carry out voice services. The terminal device performs voice services in the first network, and needs to return from the first network to the second network after the voice service ends.

For the process of the terminal device being based on the CSFB, the method for the user to fall back from the second network to the first network to perform the voice service can be referred to the prior art, and is not described in this embodiment. After the terminal device ends the voice service, the network side device in the first network sends the SIB19 carrying the neighboring cell frequency points of the first network to the terminal device, so that the terminal device reselects the neighboring cell according to the neighboring cell frequency point carried by the SIB19. The second network.

In the prior art, the terminal device only knows which network it belongs to (in this embodiment, the second network), the system of the network to which it belongs, and the identification information of the operator to which the network belongs to itself, but does not know. The frequency information used by the network to which the home belongs, and the existing SIB 19 carries only the neighboring frequency points of the first network, and does not carry any information that can connect the neighboring frequency points with the networks deployed by different operators. Therefore, the terminal device cannot explicitly determine which frequency point is used by the second network to which the terminal belongs according to the SIB 19. Therefore, the terminal device is reselected to the third network in the same network as the second network by the operator of the first network, instead of Select the second network. In order to solve this problem, the network in this embodiment The network side device carries the identification information of the neighboring cell frequency points of the first network and the carrier information of the neighboring cell frequency points in the SIB19 to the terminal device. Based on this, the terminal device can determine the operator to which each neighboring cell frequency belongs according to the identification information of the operator to which the neighboring cell frequency belongs, and further determine which neighbor according to the identification information of the operator to which the second network belongs to the terminal device. The regional frequency point is the frequency point used by the second network to which the terminal device belongs. After determining the frequency point used by the second network, the terminal device may initiate a camp to the second network at the determined frequency point to return to the second network.

The process of initiating the residing of the terminal device to the second network at the frequency used by the second network may be different according to the second network. For details, refer to the prior art, which is not described in this embodiment.

In an optional implementation manner, the identifier information of the operator to which the neighboring cell frequency belongs may be the PLMN of the operator to which the neighboring cell frequency belongs, but is not limited thereto, and other information that can uniquely identify an operator may also be used as the Identification information in the embodiment.

In an optional implementation, the first network may be a 2G/3G network, for example, a GSM network in a 2G network, or a WCDMA network in a 3G network. The second network can be an LTE network.

Optionally, when the second network is an LTE network, the process in which the terminal device initiates the residing to the second network at the frequency used by the second network includes: the terminal device captures the cell corresponding to the frequency point. After the cell is captured, the peer process is performed. After the peer is completed, the system message sent by the cell site is received, and the system is registered according to the received system. For the specific process, refer to the related art.

In this embodiment, the terminal device roams to the first network that can perform the voice service, and performs the voice service in the first network. After the voice service ends, the terminal device delivers the voice through the SIB19 according to the network side device in the first network. The identification information of the operator of the neighboring cell frequency point and the identification information of the operator of the second network to which the terminal device belongs, determining the frequency used by the second network to which the terminal device belongs from the neighboring frequency points, and determining At the frequency of the device, the camping process is performed on the second network to return to the home network. The SIB19 in the embodiment carries the identifier information of the operator to which the neighboring cell belongs. The identification information of the operator to which the network belongs and the identification information of the operator to which the neighboring cell frequency belongs determine the frequency of use of the home network, and initiate the relocation to the home network, instead of defaulting to the operation of the roaming network as in the prior art. The network of the merchant initiates the residency, thereby solving the problems of dropped network and low service quality caused by the process of returning to the network. Further, the method of this embodiment can also overcome the risk that the terminal device cannot continue to use the network service and generate a large amount of roaming charges in the roaming network due to the network being refused to be hosted by the operator of the roaming network.

FIG. 2 is a flowchart of another method for re-regression to a network according to an embodiment of the present invention. as shown in picture 2, The method includes:

After the network device determines that the terminal device roaming to the first network where the network side device is located ends the voice service in the first network, the SIB 19 is generated, and the SIB 19 carries the neighbors of the first network. The identification information of the operator of the regional frequency point and the frequency of each neighboring cell, and the first network is a network that can carry out voice services.

The network side device sends the SIB 19 to the terminal device, so that the terminal device according to the identifier information of the operator to which the second network belongs to the terminal device and the operator of each neighboring frequency point belongs to the operator. Identifying, determining, from the neighboring frequency points, a frequency point used by the second network to which the terminal device belongs, and initiating a camping process to the second network at the determined frequency point; The second network is a network that does not support voice services.

In the prior art, the terminal device only knows which network it belongs to (in this embodiment, the second network), the system of the network to which it belongs, and the identification information of the operator to which the network belongs to itself, but does not know. The frequency information used by the network to which the home belongs, and the existing SIB 19 carries only the neighboring frequency points of the first network, and does not carry any information that can connect the neighboring frequency points with the networks deployed by different operators. Therefore, the terminal device cannot explicitly determine which frequency point is used by the second network to which the terminal belongs according to the SIB 19. Therefore, the terminal device is reselected to the third network in the same network as the second network by the operator of the first network, instead of Select the second network. To solve the problem, the network side device in the embodiment sends the identifier information of each neighboring cell of the first network and the identifier of the operator of the neighboring cell to the terminal device. Based on this, the terminal device can determine the operator to which each neighboring cell frequency belongs according to the identification information of the operator to which the neighboring cell frequency belongs, and further determine which neighbor according to the identification information of the operator to which the second network belongs to the terminal device. The regional frequency point is the frequency point used by the second network to which the terminal device belongs. After determining the frequency point used by the second network, the terminal device can be at the determined frequency. At the point, a host is initiated to the second network to return to the second network.

In this embodiment, the terminal device roams to the first network that can perform the voice service, and the voice service is performed on the first network. After the voice service ends, the network side device in the first network sends the message to the terminal device. The neighboring area of the network and the SIB19 of the identifier information of the operator of each neighboring frequency point, so that the terminal equipment according to the identification information of the operator to which the neighboring frequency points belong and the operator of the second network to which the terminal equipment belongs Identifying, determining, from the neighboring frequency points, a frequency point used by the second network to which the terminal device belongs, and initiating a camping process to the second network at the determined frequency point, to return to the home network, The SIB19 in the embodiment carries the identification information of the operator to which the neighboring cell belongs. Therefore, the terminal device can determine the home network according to the identity information of the operator to which the home network belongs and the identity information of the operator to which the neighboring cell belongs. The frequency used, and the home network is initiated, and does not send the default to the network of the operator of the roaming network as in the prior art. Resident, so as to solve out the network and service quality and low back problems caused by the process of the home network. Further, the method of this embodiment can also overcome the risk that the terminal device cannot continue to use the network service and generate a large amount of roaming charges in the roaming network because the network of the operator to which the roaming network belongs refuses to reside.

FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 3, the terminal device includes: a receiving module 31, a determining module 32, and a camping initiating module 33.

The receiving module 31 is configured to receive the SIB 19 sent by the network side device in the first network, where the SIB 19 carries the identifier information of each neighboring cell frequency of the first network and the operator of each neighboring cell frequency point, where the first The network is a network in which the terminal device roams and can perform voice services, and the SIB19 is The network side device determines that the terminal device roaming to the first network sends the voice service after the first network ends the voice service.

The determining module 32 is connected to the receiving module 31, and is configured to: according to the identifier information of the operator to which the second network belongs to the terminal device, and the identifier information of the operator to which the neighboring cell frequency points are received by the receiving module 31, A frequency point used by the second network to which the terminal device belongs is determined in each neighboring frequency point, and the second network is a network that does not support voice services.

The resident initiating module 33 is coupled to the determining module 32 for initiating a camping procedure to the second network at a frequency determined by the determining module 32.

In an optional implementation manner, the identifier information of the operator to which the neighboring cell frequency belongs may be the PliiN of the operator to which the neighboring cell frequency belongs.

In an alternative embodiment, the first network may be a 2G or 3G communication network; the second network may be an LTE network.

The function modules of the terminal device provided in this embodiment can be used to execute the process of the method embodiment shown in FIG. 1. The specific working principle is not described here. For details, refer to the description of the method embodiment.

The terminal device provided in this embodiment can roam to the first network that can perform the voice service, and the voice service is performed in the first network. After the voice service ends, the network device can be delivered by the network side device in the first network through the SIB19. The identification information of the operator of the neighboring cell frequency point and the identification information of the operator of the second network to which the terminal device belongs, determining the frequency used by the second network to which the terminal device belongs from the neighboring frequency points, and determining The terminal device of the present embodiment is configured to initiate a residing process to the second network to return to the home network. The SIB 19 in this embodiment carries the identification information of the operator to which the neighboring cell belongs. The frequency information used by the home network may be determined according to the identifier information of the operator to which the home network belongs and the identifier information of the operator to which the neighboring frequency belongs, and the home network is initiated to stay, instead of roaming by default as in the prior art. The network of the operator of the network initiates the residency, thereby solving the problem of dropped network and low service quality caused by the process of re-regressive network. question. Further, the terminal device of this embodiment does not cause a problem that the network of the operator to which the roaming network belongs is refused to reside, resulting in the inability to continue using the network service and generating a large amount of roaming charges in the roaming network.

FIG. 4 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. As shown in FIG. 4, the terminal device includes: a receiver 41 and a processor 42.

The receiver 41 is configured to receive the SIB19 sent by the network side device in the first network, where the SIB19 carries the identifier information of each neighboring cell frequency of the first network and the operator of each neighboring cell frequency point, where the first The network is a network that the terminal device roams to and can perform a voice service, and the SIB 19 is that the network side device sends after the terminal device that determines to roam to the first network ends the voice service on the first network. of.

The processor 42 is configured to: according to the identifier information of the operator to which the second network to which the terminal device belongs, and the identifier information of the operator to which the neighboring cell frequency points are received by the receiver 41, from the neighboring cell frequencies Determining a frequency point used by the second network to which the terminal device belongs, the second network is a network that does not support voice services, and initiates a camping process to the second network at the determined frequency point.

In a specific implementation, the processor 42 may be a central processing unit (CPU), or an specific integrated circuit (ASIC), or configured to implement the implementation of the present invention. An example of one or more integrated circuits.

In an optional implementation manner, the identifier information of the operator to which the neighboring cell frequency belongs may be the PL deletion of the operator to which the neighboring cell frequency belongs.

Further, as shown in FIG. 4, the terminal device further includes: a memory 43 configured to store a program and related data generated by the terminal device to perform various services. In particular, the program can include program code, the program code including computer operating instructions.

The memory 432 may include a high speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

Further, as shown in FIG. 4, the terminal device further includes: a transmitter 44. The receiver 41 cooperates with the transmitter 44 to be primarily responsible for communication between the terminal device and other devices, such as network side devices or other terminal devices.

In a specific implementation, the receiver 41 and the transmitter 44 may be an input/output (I/O) interface of the terminal device, or various wireless communication modules, such as a WiFi module, an infrared module, or Radio Frequency (RF) module.

Further, as shown in FIG. 4, the terminal device may further include: a display, a mouse, a keyboard, an audio circuit, a power supply, and the like, all of which are connected to the processor 42. In addition to being connected to the processor 42, the power supply can be connected to other modules (not shown) for powering other modules.

Each functional module of the terminal device provided in this embodiment may be used to perform the method embodiment shown in FIG. The specific working principle of the process is not described here. For details, refer to the description of the method embodiment.

The terminal device provided in this embodiment can roam to the first network that can perform the voice service, and the voice service is performed in the first network. After the voice service ends, the network device can be delivered by the network side device in the first network through the SIB19. The identification information of the operator of the neighboring cell frequency point and the identification information of the operator of the second network to which the terminal device belongs, determining the frequency used by the second network to which the terminal device belongs from the neighboring frequency points, and determining The terminal device of the present embodiment is configured to initiate a residing process to the second network to return to the home network. The SIB 19 in this embodiment carries the identification information of the operator to which the neighboring cell belongs. The frequency information used by the home network may be determined according to the identity information of the operator to which the home network belongs and the identity information of the operator to which the neighboring cell belongs, and the home network is initiated to stay, instead of defaulting to the prior art. The network of the operator to which the roaming network belongs is initiated to reside, thereby solving the problem of dropped network and low service quality caused by the process of re-regressive network. And other issues. Further, the terminal device of this embodiment does not cause a problem that the network of the operator to which the roaming network belongs is refused to reside, resulting in the inability to continue using the network service and generating a large amount of roaming charges in the roaming network.

FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present invention. As shown in FIG. 5, the network side device includes: a generating module 51 and a sending module 52.

a generating module 51, configured to generate an SIB19 after the terminal device that is roaming to the first network where the network side device is located ends the voice service in the first network, where the SIB19 carries each of the first network The identification information of the operator of the neighboring cell and the frequency of each neighboring cell, and the first network is a network that can carry out voice services.

The sending module 52 is connected to the generating module 51, and configured to send the SIB19 generated by the generating module 51 to the terminal device, so that the terminal device according to the identifier information of the operator to which the second network to which the terminal device belongs belongs And identifying, by the identifiers of the operators of the neighboring frequency points, the frequency points used by the second network to which the terminal device belongs from the neighboring frequency points, and at the determined frequency points, The second network initiates a resident process; the second network is a network that does not support voice services.

The function modules of the network side device provided in this embodiment can be used to execute the process of the method embodiment shown in FIG. 2, and the specific working principle is not described here. For details, refer to the description of the method embodiment. The network side device provided in this embodiment sends a neighboring cell frequency point and each neighboring cell frequency carrying the first network to the terminal device after the terminal device that is roaming to the first network in which the network side device is located ends the voice service. The SIB19 of the identifier information of the operator belongs to the terminal device, so that the terminal device determines the terminal device from each neighboring frequency point according to the identification information of the operator to which the neighboring cell frequency belongs and the identification information of the operator to which the second network belongs to the terminal device. The frequency of the second network that is used by the home network is used to initiate the camping process to the second network to return to the home network. The SIB19 in the embodiment carries the neighboring frequency points. The identification information of the operator may be used to determine the frequency of the home network using the identity information of the operator to which the home network belongs and the identity information of the operator to which the neighboring cell belongs, and initiate the presence of the home network. It does not default to the network of the operator to which the roaming network belongs as in the prior art, thereby solving the dropped network and service caused by the process of returning to the network. Low quality issues.

FIG. 6 is a schematic structural diagram of another network side device according to an embodiment of the present invention. As shown in FIG. 6, the network side device includes: a processor 61 and a transmitter 62.

The processor 61 is configured to generate an SIB 19, where the terminal device that is roaming to the first network where the network side device is located, ends the voice service in the first network, where the SIB 19 carries each of the first network The identification information of the operator of the neighboring cell and the frequency of each neighboring cell, and the first network is a network that can carry out voice services.

In particular implementations, processor 61 can be a general purpose CPU, or a particular ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The transmitter 62 is configured to send the SIB 19 generated by the processor 61 to the terminal device, so that the terminal device is configured according to the identifier information of the operator to which the second network to which the terminal device belongs, and the neighboring cells. Determining the frequency information of the second network to which the terminal device belongs from the frequency points of the neighboring cell, and initiating the station to the second network at the determined frequency point The process of staying; the second network is a network that does not support voice services.

Further, as shown in FIG. 6, the network side device further includes: a receiver 63 and a memory 64. The receiver 63 cooperates with the transmitter 62, and is mainly responsible for completing the network side device and other devices. For example, communication between terminal devices or other network side devices. In a specific implementation, the receiver 63 and the transmitter 62 may be various wireless communication modules of the network side device, such as a WiFi module, an infrared module, or an RF module.

The memory 64 is configured to store a program and related data generated by the network side device for performing various services. In particular, the program can include program code, the program code including computer operating instructions.

The memory 64 may include a high speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

Optionally, in a specific implementation, if the processor 61, the transmitter 62, the receiver 63, and the memory 64 are implemented independently, the processor 61, the transmitter 62, the receiver 63, and the memory 64 may be connected to each other through a bus and complete each other. Communication between. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Wait. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.

Optionally, in a specific implementation, if the processor 61, the transmitter 62, the receiver 63, and the memory 64 are integrated on one chip, the processor 61, the transmitter 62, the receiver 63, and the memory 64 may pass through an internal interface. Complete the same communication.

The function modules of the network side device provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 2, and the specific working principle is not described here. For details, refer to the description of the method embodiment.

The network side device provided in this embodiment sends a neighboring cell frequency point and each neighboring cell frequency carrying the first network to the terminal device after the terminal device that is roaming to the first network in which the network side device is located ends the voice service. The SIB19 of the identifier information of the operator belongs to the terminal device, so that the terminal device determines the terminal device from each neighboring frequency point according to the identification information of the operator to which the neighboring cell frequency belongs and the identification information of the operator to which the second network belongs to the terminal device. The frequency of the second network that is used by the home network is used to initiate the camping process to the second network to return to the home network. The SIB19 in the embodiment carries the neighboring frequency points. The identification information of the operator may be used to determine the frequency of the home network using the identity information of the operator to which the home network belongs and the identity information of the operator to which the neighboring cell belongs, and initiate the presence of the home network. It does not default to the network of the operator to which the roaming network belongs as in the prior art, thereby solving the dropped network and service caused by the process of returning to the network. Quality Low question.

One of ordinary skill in the art will appreciate that all or a portion of the steps of implementing the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as ROM, RAM, disk or optical disk. It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. A method of returning to a belonging network, characterized by:

The terminal device receives the No. 19 system message block SIB19 sent by the network side device in the first network. The SIB19 carries the identification information of each neighboring cell frequency point of the first network and the operator to which each neighboring cell frequency point belongs. , the first network is a network to which the terminal device roams and can carry out voice services, and the SIB19 is used by the network side device when determining that the terminal device roaming to the first network is in the first network. Sent after a network ends its voice service;

The terminal device determines the belonging of the terminal device from the frequency points of each neighboring cell according to the identification information of the operator of the second network to which the terminal device belongs and the identification information of the operator to which the frequency points of each neighboring cell belong. a frequency point used by the second network, which is a network that does not support voice services; and the terminal device initiates a camping process to the second network at the determined frequency point.

2. The method according to claim 1, characterized in that the identification information of the operator to which each neighboring cell frequency point belongs is the public land mobile network PL of the operator to which each neighboring cell frequency point belongs.

3. The method according to claim 1 or 2, characterized in that the first network is a second generation network.

2G or third generation 3G communication network; the second network is the long-term evolution LTE network.

4. A method of returning to the belonging network, which is characterized by including:

After determining that the terminal device roaming to the first network where the network side device is located ends the voice service in the first network, the network side device generates system message block SIB19 No. 19, where the SIB19 carries the Each neighboring cell frequency point of a network and the identification information of the operator to which each neighboring cell frequency point belongs, and the first network is a network that can carry out voice services;

The network-side device sends the SIB19 to the terminal device, so that the terminal device can perform the operation according to the identification information of the operator of the second network to which the terminal device belongs and the operator's information of each neighboring cell frequency point. Identification information, determine the frequency point used by the second network to which the terminal device belongs from the frequency points of each neighboring cell, and initiate a camping process to the second network on the determined frequency point; the third The second network is a network that does not support voice services.

5. The method according to claim 4, characterized in that the identification information of the operator to which each neighboring cell frequency point belongs is the public land mobile network PL of the operator to which each neighboring cell frequency point belongs.

6. The method according to claim 4 or 5, the first network is a second generation 2G or a third generation 3G communication network; the second network is a long-term evolution LTE network.

7. A terminal device, characterized by including:

The receiving module is configured to receive the 19th system message block SIB19 sent by the network side device in the first network. The SIB19 carries the neighboring cell frequency points of the first network and the operator to which each neighboring cell frequency point belongs. The identification information of Sent after the first network ends the voice service;

Determining module, configured to determine the terminal device from the frequency points of each neighboring cell according to the identification information of the operator of the second network to which the terminal device belongs and the identification information of the operator to which the frequency points of each neighboring cell belong. A frequency point used by the home second network, which is a network that does not support voice services; a camp initiation module, configured to initiate a camp process to the second network at the determined frequency point.

8. The terminal device according to claim 7, wherein the identification information of the operator to which each neighboring cell frequency point belongs is the public land mobile network PL of the operator to which each neighboring cell frequency point belongs.

9. The terminal device according to claim 7 or 8, wherein the first network is a second generation 2G or third generation 3G communication network; and the second network is a long-term evolution LTE network.

10. A network side device, characterized by including:

Generating module, configured to generate system message block SIB19 No. 19 after determining that the terminal device roaming to the first network where the network side device is located ends the voice service in the first network, the SIB19 carrying the The identification information of each neighboring cell frequency point of the first network and the operator to which each neighboring cell frequency point belongs. The first network is a network that can carry out voice services;

A sending module, configured to send the SIB19 to the terminal device, so that the terminal device can send the SIB19 to the terminal device according to the identification information of the operator belonging to the second network to which the terminal device belongs and the operator's information of the adjacent cell frequency point. Identification information, determine the frequency point used by the second network to which the terminal device belongs from the frequency points of each neighboring cell, and initiate a camping process to the second network on the determined frequency point; the third The second network is a network that does not support voice services.

11. The network side device according to claim 10, characterized in that the identification information of the operator to which each neighboring cell frequency point belongs is the public land mobile network PLMN of the operator to which each neighboring cell frequency point belongs.

12. The network side device according to claim 10 or 11, characterized in that the first network is a second generation 2G or a third generation 3G communication network; the second network is a long-term evolution LTE network.