CN111343684A - Circuit switched fallback cell selection method and device, terminal and storage medium - Google Patents
Circuit switched fallback cell selection method and device, terminal and storage medium Download PDFInfo
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- CN111343684A CN111343684A CN202010175702.9A CN202010175702A CN111343684A CN 111343684 A CN111343684 A CN 111343684A CN 202010175702 A CN202010175702 A CN 202010175702A CN 111343684 A CN111343684 A CN 111343684A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
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Abstract
The disclosure provides a circuit switched fallback cell selection method and device, a terminal and a storage medium. The circuit switched fallback cell selection method comprises the following steps: when a redirection message is received, acquiring a first cell frequency point appointed by a network in the redirection message; determining whether the first cell frequency point belongs to a white list cell frequency point list; when the first cell frequency point is determined not to belong to the white list cell frequency point list, selecting a second cell frequency point from the white list cell frequency point list, and redirecting to a cell corresponding to the second cell frequency point; and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting a circuit switched fallback cell, a terminal, and a storage medium.
Background
Long Term Evolution (LTE) networks are packet service or data service oriented networks, i.e. the original purpose of Evolution is for packet domain services (PS). After a User Equipment (UE) is registered in an LTE network, if a Circuit Switched (CS) voice service or other services are to be performed, the UE can be implemented by a CS Fallback (CSFB) technique.
The CSFB technique drops the circuit domain voice service in the LTE network back to a Wideband Code Division Multiple Access (WCDMA) network or a global system for Mobile Communications (GSM) network supporting circuit domain voice.
When a user terminal registered in an LTE network needs to fall back to a WCDMA network or a GSM network, the LTE network usually sends a redirection message to a user equipment, where the redirection message carries a list of frequency points designated to fall back. And the user equipment searches according to the appointed frequency point list and executes the voice service after residing. The ue itself may also maintain a white List of cells (GoodCell List). When the appointed frequency point can not finish the residence, a cell frequency point is selected from the white list cell list for residence, the voice service is finished, and the appointed frequency point is added into the black list cell list.
For a cell which can successfully reside but can not successfully perform voice service, the existing mechanism may cause that the voice service can not be successfully performed all the time.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to a method and an apparatus for selecting a circuit switched fallback cell, a terminal and a storage medium, which at least to some extent overcome the problem of continuous failure of voice services in the related art.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.
According to an aspect of the present disclosure, a method for selecting a circuit switched fallback cell is provided, including: when a redirection message is received, acquiring a first cell frequency point appointed by a network in the redirection message; determining whether the first cell frequency point belongs to a white list cell frequency point list; when the first cell frequency point is determined not to belong to the white list cell frequency point list, selecting a second cell frequency point from the white list cell frequency point list, and redirecting to a cell corresponding to the second cell frequency point; and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
According to an embodiment of the invention, the method further comprises: constructing a grey list cell frequency point list; determining whether the cell frequency points in the grey list cell frequency point list can be added into the white list cell frequency point list; and when the cell frequency point in the grey list cell frequency point list is determined to be added into the white list cell frequency point list, adding the cell frequency point in the grey list cell frequency point list into the white list cell frequency point list.
According to an embodiment of the present invention, determining whether a cell frequency point in the grey list cell frequency point list can be added to the white list cell frequency point list includes: and when the terminal successfully performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list can be added into the white list cell frequency point list.
According to an embodiment of the present invention, the successfully performing circuit domain services on the cell corresponding to the cell frequency point in the grey list cell frequency point list by the terminal includes: and the terminal successfully registers in the cell corresponding to the cell frequency point in the grey list cell frequency point list and successfully completes the circuit domain service.
According to an embodiment of the present invention, constructing a grey list cell frequency point list includes: and constructing the grey list cell frequency point list by scanning the cell frequency points of the circuit domain network and/or receiving the system information of the circuit domain network.
According to an embodiment of the invention, the method further comprises: determining whether the cell frequency points in the grey list cell frequency point list need to be added into the blacklist cell frequency point list; and when determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list, adding the cell frequency point in the grey list cell frequency point list into the blacklist cell frequency point list.
According to an embodiment of the present invention, determining whether cell frequency points in the grey list cell frequency point list need to be added to the black list cell frequency point list includes: when the terminal fails to reside in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list; and when the terminal fails to perform circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list.
According to an embodiment of the present invention, a cell residence failure of a terminal corresponding to a cell frequency point in the grey list cell frequency point list includes: and the terminal fails to register in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
According to an embodiment of the present invention, a failure of a terminal performing a circuit domain service in a cell corresponding to a cell frequency point in the grey list cell frequency point list includes: and the terminal receives a network connection release message when the terminal performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
According to an embodiment of the invention, the method further comprises: and when the first cell frequency point is determined to belong to the white list cell frequency point list, redirecting to a cell corresponding to the first cell frequency point.
According to an embodiment of the present invention, the redirection message includes: and the radio resource control connection release message comprises the circuit domain fallback indication information.
According to another aspect of the present invention, there is provided a circuit switched fallback cell selection apparatus, including: the information acquisition module is used for acquiring a first cell frequency point appointed by a network in a redirection message when the redirection message is received; a frequency point determining module, configured to determine whether the first cell frequency point belongs to a white list cell frequency point list; the redirection module is used for selecting a second cell frequency point from the white list cell frequency point list and redirecting to a cell corresponding to the second cell frequency point when the first cell frequency point is determined not to belong to the white list cell frequency point list; and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
According to still another aspect of the present disclosure, there is provided a terminal including: a processor and a memory; wherein the processor is configured to execute a computer program stored in the memory to perform any of the above-mentioned circuit domain fallback cell selection methods.
According to yet another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements any of the above-described circuit domain fallback cell selection methods.
According to the method for selecting the circuit switched fallback cell provided by the embodiment of the disclosure, after receiving a redirection message sent by a network, a terminal firstly judges whether a fallback cell frequency point specified by the network belongs to a frequency point in a white list frequency point list, and if not, selects a cell frequency point from the white list frequency point list for redirection. By the method, the problem of continuous failure of the circuit domain service caused by abnormal network configuration can be effectively avoided, and the user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a flowchart illustrating a method for selecting a circuit switched fallback cell in an embodiment of the disclosure.
Fig. 2 is a flow chart illustrating another circuit switched fallback cell selection method in an embodiment of the present disclosure.
Fig. 3 is a flowchart illustrating a method for selecting a circuit switched fallback cell in an embodiment of the disclosure.
Fig. 4 is a schematic diagram illustrating a circuit switched fallback cell selection apparatus according to an embodiment of the disclosure.
Fig. 5 shows a block diagram of a terminal in an embodiment of the present disclosure.
FIG. 6 shows a schematic diagram of a computer-readable storage medium in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
Further, in the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and that there may be three cases of a alone, B alone, and a and B simultaneously. The symbol "/" generally indicates that the former and latter associated objects are in an "or" relationship. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the existing LTE network, in order to fall back to the WCDMA network or the GSM network when performing the circuit domain voice service, the user equipment needs to perform a joint registration when registering with the LTE network, so as to ensure that the registration state and the location information of the user equipment are stored in both the core network device of the LTE network and the core network device of the WCDMA network or the GSM network.
When user equipment residing in an LTE network wants to initiate a Mobile Originating (MO) voice service or a called (MT) voice service, the LTE network sends a redirection message to the user equipment, where the redirection message carries a designated fallback cell frequency point, so that the user equipment can select a fallback cell when performing CSFB.
As described above, the user equipment searches according to the designated frequency point and executes the voice service after residing. The user equipment itself will also keep a white list of cells. When the appointed frequency point can not finish the residence, a cell frequency point is selected from the white list cell list for residence, the voice service is finished, and the appointed frequency point is added into the black list cell list.
However, it is found in the existing network that there may be a case where the fallback cell frequency point specified by the LTE network cannot perform the voice service although the fallback cell frequency point can reside (for example, the location update operation is successfully completed). Taking the GSM network as an example, although the camping is successfully completed, when the voice service is performed, a layer three Channel Release (Channel Release) message sent by the GSM network is received, which results in a failure of the voice service.
Since the designated cell can camp successfully, the user equipment will not add it to the blacklisted cell list. Subsequently, when performing CSFB, the LTE network may still specify the frequency point of the cell, which results in a failure of voice service.
The embodiment of the disclosure provides a method and a device for selecting a circuit switched fallback cell, a terminal and a storage medium, which can avoid the situation that the voice service occurs continuously.
Hereinafter, the steps of the circuit switched fallback cell selection method in the exemplary embodiment of the disclosure will be described in more detail with reference to the drawings and the embodiments.
It should be understood that the technical solution of the present disclosure may be used in various wireless communication systems, for example, global system for mobile communications (GSM), General Packet Radio Service (GPRS), Wideband Code Division Multiple Access (WCDMA), High Speed Packet Access (HSPA), LTE-advanced (LTE-a), New Radio (NR), etc. Further, communication between the terminal and the network devices in the wireless communication network may be performed according to any suitable generation communication protocol, including but not limited to second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, and fifth generation (5G) communication protocols and/or any other protocol currently known or to be developed in the future.
It should be understood that the term "terminal" refers to any terminal device that can access a wireless communication network and receive services therefrom. A terminal may comprise User Equipment (UE), which is also referred to as a mobile terminal or mobile user equipment, etc. The user equipment may be a mobile terminal such as a mobile phone (also referred to as a cellular phone) or a mobile device having a computer with a mobile terminal such as a portable, handheld, vehicle mounted mobile device or having a built-in computer.
Fig. 1 is a flowchart illustrating a method for selecting a circuit switched fallback cell in an embodiment of the disclosure. The method provided by the embodiment of the present disclosure can be executed by any electronic device with computing processing capability, for example, a "terminal" as described above.
Referring to fig. 1, a method 10 for selecting a circuit switched fallback cell includes:
in step S102, when receiving the redirection message, a first cell frequency point specified by the network in the redirection message is obtained.
Without loss of generality, taking a terminal residing in an LTE network as an example, when the terminal needs to fall back to a WCDMA network or a GSM network for a circuit domain service (such as a calling party or a called party of a voice service), the LTE network sends a redirection message to the terminal.
The redirection message may be, for example, a radio resource control connection Release message (RRC Release), where the redirection indication field is carried in the redirection message and carries the specified first cell frequency point.
The first cell frequency point may also be indicated as being contained in the frequency point list.
In step S104, it is determined whether the first cell frequency point belongs to the white list cell frequency point list.
The white list cell frequency point list is a frequency point list stored and maintained by the terminal. The cells (cells) corresponding to the cell frequency points in the white list cell frequency point list include cells in which the terminal has successfully performed a circuit domain service (such as a voice service).
In step S106, when it is determined that the first cell frequency point does not belong to the white list cell frequency point list, a second cell frequency point is selected from the white list cell frequency point list, and is redirected to a cell corresponding to the second cell frequency point.
The redirection to the cell corresponding to the second cell frequency point may include operations such as receiving a broadcast message, establishing a wireless connection, and completing registration in the cell.
In some embodiments, the circuit switched fallback cell selection method 10 may further include: and when the first cell frequency point is determined to belong to the white list cell frequency point list, redirecting to the cell corresponding to the first cell frequency point.
According to the method for selecting the circuit switched fallback cell provided by the embodiment of the disclosure, after receiving a redirection message sent by a network, a terminal firstly judges whether a fallback cell frequency point specified by the network belongs to a frequency point in a white list frequency point list, and if not, selects a cell frequency point from the white list frequency point list for redirection. By the method, the problem of continuous failure of the circuit domain service caused by abnormal network configuration can be effectively avoided, and the user experience is improved.
Fig. 2 is a flow chart illustrating another circuit switched fallback cell selection method in an embodiment of the present disclosure. Unlike the circuit switched fallback cell selection method shown in fig. 1, fig. 2 further provides a method how to construct a white list cell frequency point list.
Referring to fig. 2, the method 20 for circuit switched loop cell selection may further include:
in step S202, a grey list cell frequency point list is constructed.
The grey list of cell frequency points is, for example, an initially constructed cell frequency point list.
In some embodiments, constructing the grey list cell frequency point list may include, for example: and (3) constructing a grey list cell frequency point list by scanning the cell frequency points of the circuit domain network and/or receiving system messages of the circuit domain network. For example, the terminal may construct its grey list cell frequency point list by scanning nearby cell frequency points and/or receiving system messages broadcast by nearby cells in a WCDMA network or a GSM network.
In step S204, it is determined whether the cell frequency point in the grey list cell frequency point list can be added to the white list cell frequency point list.
In some embodiments, determining whether a cell frequency point in a grey-list cell frequency point list can be added to a white-list cell frequency point list may include: and when the terminal successfully performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list can be added into the white list cell frequency point list.
The above, if the terminal successfully performs the circuit domain service in the cell corresponding to the cell frequency point in the grey list cell frequency point list, the method may include: the terminal successfully registers in the cell corresponding to the cell frequency point and successfully completes the circuit domain service.
In step S206, when it is determined that the cell frequency point in the grey list cell frequency point list can be added to the white list cell frequency point list, adding the cell frequency point in the grey list cell frequency point list to the white list cell frequency point list.
It should be noted that, initially, the white list cell frequency point list may be empty. At this time, when the network indicates the first cell frequency point through the redirection message, the terminal may add the first cell frequency point to the grey list cell frequency point list, and try to redirect to the cell corresponding to the first cell frequency point. And if the circuit domain service is successfully carried out, transferring the first cell frequency point from the grey list cell frequency point list to the white list cell frequency point list.
Fig. 3 is a flowchart illustrating a method for selecting a circuit switched fallback cell in an embodiment of the disclosure. Unlike the circuit switched fallback cell selection method shown in fig. 1, fig. 3 further provides a method how to construct a blacklisted cell frequency point list.
The circuit switched fallback cell selection method 30 with reference to fig. 3 may further include:
in step S302, it is determined whether the cell frequency point in the grey list cell frequency point list needs to be added to the blacklist cell frequency point list.
The terminal can also store and maintain a blacklist cell frequency point list, and when the terminal selects the circuit domain loop cell, the terminal can not select the cell frequency point from the blacklist cell frequency point list to redirect.
In some embodiments, determining whether a cell frequency point in a grey list cell frequency point list needs to be added to a black list cell frequency point list may include: when the terminal fails to reside in a cell corresponding to a cell frequency point in a grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into a blacklist cell frequency point list; and/or when the terminal fails to perform circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list.
The cell residence failure corresponding to the cell frequency point in the grey list cell frequency point list by the terminal may include: and the terminal fails to register in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
If the failure of the terminal in the circuit domain service in the cell corresponding to the cell frequency point in the grey list cell frequency point list can include: when the terminal performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, the terminal receives a network connection release message, such as CHANNEL RELEASE message in a GSM network.
In step S304, when it is determined that the cell frequency point in the grey list cell frequency point list needs to be added to the blacklist cell frequency point list, adding the cell frequency point in the grey list cell frequency point list to the blacklist cell frequency point list.
It is noted that the above-mentioned figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 4 is a schematic diagram illustrating a circuit switched fallback cell selection apparatus according to an embodiment of the disclosure.
Referring to fig. 4, the circuit domain loop cell selection apparatus 40 includes: an information acquisition module 402, a frequency point determination module 404 and a redirection module 406.
The information obtaining module 402 is configured to, when a redirection message is received, obtain a first cell frequency point specified by a network in the redirection message.
The frequency point determining module 404 is configured to determine whether the first cell frequency point belongs to a white list cell frequency point list.
The redirecting module 406 is configured to select a second cell frequency point from the white list cell frequency point list and redirect the second cell frequency point to a cell corresponding to the second cell frequency point when it is determined that the first cell frequency point does not belong to the white list cell frequency point list;
and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
According to the circuit switched fallback cell selection device provided by the embodiment of the disclosure, after receiving a redirection message sent by a network, a terminal can first determine whether a fallback cell frequency point specified by the network belongs to a frequency point in a white list frequency point list, and if not, select a cell frequency point from the white list frequency point list for redirection. By the method, the problem of continuous failure of the circuit domain service caused by abnormal network configuration can be effectively avoided, and the user experience is improved.
In some embodiments, the circuit domain loop cell selecting apparatus 40 further includes: the device comprises a grey list building module, a list determining module and a list moving module. The grey list building module is used for building a grey list cell frequency point list. The list determining module is used for determining whether the cell frequency points in the grey list cell frequency point list can be added into the white list cell frequency point list. The list moving module is used for adding the cell frequency points in the grey list cell frequency point list into the white list cell frequency point list when the cell frequency points in the grey list cell frequency point list are determined to be added into the white list cell frequency point list.
In some embodiments, the list determining module may be configured to determine that a cell frequency point in the grey list cell frequency point list may be added to the white list cell frequency point list when the terminal successfully performs a circuit domain service in a cell corresponding to a cell frequency point in the grey list cell frequency point list.
In some embodiments, the successfully performing, by the terminal, a circuit domain service in a cell corresponding to a cell frequency point in a grey list cell frequency point list includes: and the terminal successfully registers the cell corresponding to the cell frequency point in the grey list cell frequency point list and successfully completes the circuit domain service.
In some embodiments, the grey list construction module may be configured to construct the grey list cell frequency point list by scanning cell frequency points of the circuit domain network and/or by receiving system messages of the circuit domain network.
In some embodiments, the list determining module may be further configured to determine whether a cell frequency point in the grey-list cell frequency point list needs to be added to the black-list cell frequency point list.
In some embodiments, the list moving module may be further configured to add the cell frequency point in the grey list cell frequency point list to the blacklist cell frequency point list when it is determined that the cell frequency point in the grey list cell frequency point list needs to be added to the blacklist cell frequency point list.
In some embodiments, the list determining module may be configured to determine that a cell frequency point in a grey list cell frequency point list needs to be added to a blacklist cell frequency point list when a cell residence corresponding to the cell frequency point in the grey list cell frequency point list by the terminal fails; and when the terminal fails to perform circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list.
In some embodiments, the cell camping failure of the terminal corresponding to the cell frequency point in the grey list cell frequency point list includes: and the terminal fails to register in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
In some embodiments, the failure of the terminal in performing the circuit domain service in the cell corresponding to the cell frequency point in the grey list cell frequency point list includes: and the terminal receives the network connection release message when the terminal performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
In some embodiments, the redirecting module 406 is further configured to redirect to a cell corresponding to the first cell frequency point when it is determined that the first cell frequency point belongs to the white list of cell frequency points.
In some embodiments, redirecting the message comprises: and the radio resource control connection release message comprises the circuit domain fallback indication information.
As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
A terminal 800 according to this embodiment of the present disclosure is described below with reference to fig. 5. The terminal 800 shown in fig. 5 is only an example and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 5, terminal 800 is in the form of a general purpose computing device. The components of terminal 800 may include, but are not limited to: the at least one processing unit 810, the at least one memory unit 820, and a bus 830 that couples the various system components including the memory unit 820 and the processing unit 810.
Wherein the storage unit stores program code that is executable by the processing unit 810 to cause the processing unit 810 to perform steps according to various exemplary embodiments of the present disclosure as described in the "exemplary methods" section above in this specification. For example, the processing unit 810 may execute S102 shown in fig. 1, and when receiving the redirection message, obtain a first cell frequency point specified by the network in the redirection message. And S104, determining whether the first cell frequency point belongs to a white list cell frequency point list. And S106, when the first cell frequency point is determined not to belong to the white list cell frequency point list, selecting a second cell frequency point from the white list cell frequency point list, and redirecting to a cell corresponding to the second cell frequency point.
The storage unit 820 may include readable media in the form of volatile memory units such as a random access memory unit (RAM)8201 and/or a cache memory unit 8202, and may further include a read only memory unit (ROM) 8203.
The storage unit 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Terminal 800 can also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with terminal 800, and/or any device (e.g., router, modem, etc.) that enables terminal 800 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 850. Also, the terminal 800 can communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet) via the network adapter 860. As shown, the network adapter 860 communicates with the other modules of the terminal 800 via a bus 830. It should be appreciated that although not shown, other hardware and/or software modules can be used in conjunction with the terminal 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the "exemplary methods" section above of this specification, when the program product is run on the terminal device.
Referring to fig. 6, a program product 900 for implementing the above method according to an embodiment of the present disclosure is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (14)
1. A method for selecting a circuit switched fallback cell, comprising:
when a redirection message is received, acquiring a first cell frequency point appointed by a network in the redirection message;
determining whether the first cell frequency point belongs to a white list cell frequency point list; and
when the first cell frequency point is determined not to belong to the white list cell frequency point list, selecting a second cell frequency point from the white list cell frequency point list, and redirecting to a cell corresponding to the second cell frequency point;
and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
2. The method of claim 1, further comprising:
constructing a grey list cell frequency point list;
determining whether the cell frequency points in the grey list cell frequency point list can be added into the white list cell frequency point list;
and when the cell frequency point in the grey list cell frequency point list is determined to be added into the white list cell frequency point list, adding the cell frequency point in the grey list cell frequency point list into the white list cell frequency point list.
3. The method of claim 2, wherein determining whether the cell frequency point in the grey list cell frequency point list can be added to the white list cell frequency point list comprises:
and when the terminal successfully performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list can be added into the white list cell frequency point list.
4. The method of claim 3, wherein the terminal successfully performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, which includes: and the terminal successfully registers in the cell corresponding to the cell frequency point in the grey list cell frequency point list and successfully completes the circuit domain service.
5. The method of claim 2, wherein constructing a grey list cell frequency point list comprises:
and constructing the grey list cell frequency point list by scanning the cell frequency points of the circuit domain network and/or receiving the system information of the circuit domain network.
6. The method of claim 2, further comprising:
determining whether the cell frequency points in the grey list cell frequency point list need to be added into the blacklist cell frequency point list;
and when determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list, adding the cell frequency point in the grey list cell frequency point list into the blacklist cell frequency point list.
7. The method of claim 6, wherein determining whether the cell frequency point in the grey list cell frequency point list needs to be added to the blacklist cell frequency point list comprises:
when the terminal fails to reside in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list;
and when the terminal fails to perform circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list, determining that the cell frequency point in the grey list cell frequency point list needs to be added into the blacklist cell frequency point list.
8. The method of claim 7, wherein the failure of the terminal to camp in the cell corresponding to the cell frequency point in the grey list cell frequency point list comprises: and the terminal fails to register in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
9. The method of claim 7, wherein the failure of the circuit domain service by the terminal in the cell corresponding to the cell frequency point in the grey list cell frequency point list comprises: and the terminal receives a network connection release message when the terminal performs circuit domain services in the cell corresponding to the cell frequency point in the grey list cell frequency point list.
10. The method of claim 1, further comprising: and when the first cell frequency point is determined to belong to the white list cell frequency point list, redirecting to a cell corresponding to the first cell frequency point.
11. The method according to any of claims 1-10, wherein the redirection message comprises: and the radio resource control connection release message comprises the circuit domain fallback indication information.
12. A circuit switched fallback cell selection apparatus, comprising:
the information acquisition module is used for acquiring a first cell frequency point appointed by a network in a redirection message when the redirection message is received;
a frequency point determining module, configured to determine whether the first cell frequency point belongs to a white list cell frequency point list; and
a redirection module, configured to select a second cell frequency point from the white list cell frequency point list and redirect the second cell frequency point to a cell corresponding to the second cell frequency point when it is determined that the first cell frequency point does not belong to the white list cell frequency point list;
and the cells corresponding to the cell frequency points in the white list cell frequency point list comprise cells in which the terminal successfully performs the circuit domain service.
13. A terminal, comprising: a processor and a memory; wherein the processor is configured to execute a computer program stored in the memory to perform the method of any of claims 1-11.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010175702.9A CN111343684A (en) | 2020-03-13 | 2020-03-13 | Circuit switched fallback cell selection method and device, terminal and storage medium |
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| CN202010175702.9A CN111343684A (en) | 2020-03-13 | 2020-03-13 | Circuit switched fallback cell selection method and device, terminal and storage medium |
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