CN113938988B - Public data network PDN connection method, terminal and storage medium - Google Patents
Public data network PDN connection method, terminal and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The embodiment of the invention relates to the technical field of communication and discloses a public data network PDN connection method, a terminal and a storage medium. The method of the invention comprises the following steps: detecting a plurality of Access Point Names (APNs) stored in a local database, and determining types corresponding to the APNs respectively; determining the weight score of each APN according to the types corresponding to the APNs respectively; wherein the weight score of the xcap type APN is larger than the weight scores of the other types of APNs; and establishing connection with the public data network PDN according to the APN with the highest weight score. The phenomenon that the user fails to execute the supplementary service in the scenes of newly creating or modifying APN, changing default APN, or adding an operator and the like is effectively avoided.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a public data network PDN connection method, a terminal and a storage medium.
Background
In order to meet the requirements of various services, the terminal needs to establish different types of public data network (Public Data Network, PDN) links, for example, a microsoft media server protocol (Microsoft Media Server Protocol, mms) type PDN link is a multimedia message dedicated link, a default type PDN is a default network connection link, and an application layer protocol xcap type PDN is a supplementary service (such as call forwarding, call waiting, limiting call, hidden number, etc.).
Since the access point name (Access Point Name, APN) of the terminal can be modified or newly created by the user himself and a connection with the PDN is established using the APN modified or newly created by himself. The user can not modify or newly build the APN by himself or herself, so long as the configured APN contains default type, the terminal can be ensured to normally surf the internet, the user can not determine whether the configured APN meets the requirements of all services of the terminal, and the execution failure of the supplementary service is most likely to be caused.
Disclosure of Invention
The embodiment of the invention aims to provide a public data network PDN connection method, a terminal and a storage medium, which effectively avoid the phenomenon that a user creates or modifies an APN, changes a default APN or fails to execute supplementary services in the scenes of a newly-added operator and the like.
In order to solve the above technical problems, an embodiment of the present invention provides a public data network PDN connection method, including: detecting a plurality of Access Point Names (APNs) stored in a local database, and determining types corresponding to the APNs respectively; determining the weight score of each APN according to the types corresponding to the APNs respectively; wherein the weight score of the xcap type APN is larger than the weight scores of the other types of APNs; and establishing connection with the public data network PDN according to the APN with the highest weight score.
The embodiment of the invention also provides a terminal, which comprises: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the PDN connection method described above.
The embodiment of the invention also provides a computer readable storage medium, and the computer program realizes the PDN connection method when being executed by a processor.
Compared with the prior art, the embodiment of the invention detects a plurality of access point names APNs stored in a local database and determines the types corresponding to the APNs respectively; determining the weight score of each APN according to the types corresponding to the APNs respectively; and establishing connection with PDNs according to the APNs with the highest weight scores, wherein the weight scores of the APNs of the xcap type are larger than those of the APNs of other types when the weight scores are carried out, so that the types of the established PDN links generally comprise the xcap type, and further, the normal operation of the supplementary service is ensured. The terminal automatically switches the APN for establishing the PDN link in a weight scoring mode, so that the phenomenon of failure in executing the supplementary service caused by the fact that a user changes the APN is avoided.
In addition, before detecting the plurality of access point names APNs stored in the local database, the method further comprises: judging whether the type of the current link connected with the PDN is xcap or not; if not, continuing to execute the step of detecting the APNs stored in the local database. The step of re-establishing the connection with the PDN is performed when it is determined that the currently established PDN link does not meet the requirements of the supplementary service, so as to avoid frequent handovers of the PDN link.
In addition, in the case where the type of the link connected to the PDN is non-xcap, the method further includes: acquiring cloud APN information stored in a cloud, wherein the cloud APN information at least comprises: cloud APN type and operator information; if the cloud APN type is xcap and the operator information is matched with the target operator information, establishing connection with the PDN according to the cloud APN information; if the cloud APN type is non-xcap or the operator information is not matched with the target operator information, continuing to execute the step of detecting a plurality of access point name APNs stored in the local database. Before acquiring a required APN through a local database, preferentially searching whether an available APN exists in the cloud, and if the available APN exists in the cloud, directly utilizing a PDN link corresponding to the APN to carry out supplementary service, so that the processing efficiency of the supplementary service is improved, and the time is saved.
In addition, the operator information includes: a mobile country code MCC and a mobile network code MNC.
In addition, determining types corresponding to the APNs respectively comprises the following steps: under the condition that the types corresponding to the APNs respectively do not comprise xcap, constructing an APN with the type xcap, and establishing connection with the PDN according to the constructed APN; and executing the step of determining the weight score of each APN according to the types corresponding to the APNs respectively under the condition that the types corresponding to the APNs respectively comprise xcap.
In addition, constructing an APN with the type of xcap comprises: and constructing an APN with the type of xcap according to the information of the target operator. The APN established in this way is matched with the terminal, so that the situation that the APN is unavailable is avoided.
In addition, according to the types corresponding to the APNs respectively, determining the weight score of each APN comprises the following steps: combining a plurality of APNs which are the same and different in type; wherein the weighted score of the combined APNs is greater than the weighted scores of other APNs. The merged APN comprises a plurality of types, and a PDN link established by using the merged APN can support a plurality of types of services and has wider applicability.
In addition, the APN includes: cmnet, cmwap, and cmwop; in all the non-merged APNs, the weight score of the cmwop is greater than the weight score of either of cmnet and cmwap. On the premise that the APNs are not combined, the weight score of the APNs used by the current PDN link is higher than the weight scores of the rest unused APNs.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a flowchart of a public data network PDN connection method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of interaction between a terminal and a network side device according to an embodiment of the present invention;
fig. 3 is a flow chart of a public data network PDN connection method according to a second embodiment of the invention;
fig. 4 is a flowchart of a public data network PDN connection method according to a third embodiment of the invention;
fig. 5 is a schematic view of a structure of a terminal according to a fourth embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present invention, and the embodiments can be mutually combined and referred to without contradiction.
A first embodiment of the present invention relates to a public data network PDN connection method, where the flow is as shown in fig. 1, and the method includes:
step 101, detecting a plurality of access point names APN stored in a local database, and determining types corresponding to the plurality of APNs respectively.
The APNs used by the terminal or established or modified by the user are stored in a local database, the local database is queried to determine all the APNs used by the terminal and established by the user, and the queried APNs may contain various types, for example: the inquired apn is cmnet, and the type is default; apn is cmwap and type is default; apn is cmwop and type is default; apn is cmnet, type is xcap, and so on. The type of the APN may be determined to be default, xcap or other types from the queried information.
After the APNs stored in the local database are determined, the APNs can be sorted, and all APNs are recorded in a list form, so that subsequent weight scoring of each APN is facilitated.
Step 102, determining the weight score of each APN according to the types corresponding to the APNs respectively.
For a default APN existing in a local database, a default weight score may be configured according to a usage habit of a user, for example APN is cmnet, and type is default; apn2 is cmwap and type is default; apn3 is cmwop and type is default; the above APN, APN, APN3 are all default APNs, the weight score of APN1 may be set to M, the weight score of APN2 may be set to N, and the weight score of APN3 may be set to L, where M > N > L. Alternatively, the weight scores for all default APNs may be set to the same value, i.e. m=n=l.
The weight score of the xcap type APN is greater than the weight scores of other types of APNs, for example, APN is cmnet, type is xcap, the weight score of APN4 can be set to R, where R is greater than any one of M, N, L, so as to ensure that the APN determined by the weight score can meet the requirement of the user for the supplementary service when only the APN type is considered.
And step 103, establishing connection with the public data network PDN according to the APN with the highest weight score.
As shown in fig. 2, after determining the APN with the highest weight score, the terminal sends a PDN connection request to the network side device, where the PDN connection request carries the APN with the highest weight score, and the network side establishes a PDN link with the terminal based on the APN. Because the APN with the highest weight score is of an xcap type, the established PDN link type is also of an xcap type, so that the established PDN link can support supplementary services.
When registering or activating the supplementary service, defining the Ut interface between the network side equipment and the terminal to use the xcap protocol defined by RFC4825, so that the terminal can normally perform the function of the supplementary service through the Ut interface.
Compared with the prior art, the embodiment of the invention detects a plurality of access point names APNs stored in a local database and determines the types corresponding to the APNs respectively; determining the weight score of each APN according to the types corresponding to the APNs respectively; and establishing connection with PDNs according to the APNs with the highest weight scores, wherein the weight scores of the APNs of the xcap type are larger than those of the APNs of other types when the weight scores are carried out, so that the types of the established PDN links generally comprise the xcap type, and further, the normal operation of the supplementary service is ensured. The terminal automatically switches the APN for establishing the PDN link in a weight scoring mode, so that the phenomenon of failure in executing the supplementary service caused by the fact that a user changes the APN is avoided.
In the second embodiment of the present invention, before acquiring a required APN through a local database, whether an available APN exists in a cloud is preferentially searched, and after the available APN does not exist in the cloud, the relevant operation of the local database is executed. The second embodiment of the present invention includes the following methods:
step 301, judging whether the type of the current link of the PDN connection is xcap, if yes, executing step 303, and if no, executing step 302;
step 302, obtaining cloud APN information stored in a cloud.
And step 303, directly carrying out the supplementary service.
Under the condition that the type of the PDN link is xcap, the PDN link can support the supplementary service, and the function of using the supplementary service by a user is not affected on the basis of not changing the original link, so that the PDN link does not need to be adjusted. In the case that the PDN link type is not xcap, the PDN link cannot support the supplementary service, so that the function of the supplementary service cannot be implemented, and in order to ensure the implementation of the function of the supplementary service, the PDN link needs to be re-established, so that the link can support the xcap protocol.
The need to determine the APN preferentially for reestablishing the PDN link can be determined in a local database in the mode mentioned in the first embodiment, the needed APN can be obtained from the APN information stored in the cloud, whether the needed APN information exists or not can be determined preferentially from the cloud in actual operation, and the needed APN information is obtained from the local database after the needed APN information does not exist in the cloud; the method can also determine whether the required APN exists in the local database preferentially, if the required APN information is not acquired from the cloud, in this embodiment, the method is described by taking the fact that the APN information is acquired in the cloud preferentially, and the sequence is not limited.
APN information capable of normally establishing a PDN link is pre-stored in the cloud, and the stored information at least comprises: the mobile country code MCC and the mobile network code MNC may, for example, be stored in the form of: operator mcc+mnc+cell+frequency point+xcap apn. Whether the terminal can normally use the link to transmit data can be determined through the operators MCC and MNC, and whether the link supports supplementary service can be determined through the xcap apn.
In addition, when the cloud APN information stored in the cloud is called, only the information containing the xcap APN can be acquired, so that the acquired data volume is reduced, the workload required by judgment is reduced, and the working efficiency is improved.
In addition, before the cloud APN information stored in the cloud is acquired, the position information of the terminal can be determined, the cell to which the network to which the terminal needs to be connected belongs is further judged, and only the information containing the cell is acquired when the cloud APN information is acquired, so that the effect of reducing the acquired data volume can be achieved.
After executing step 302, step 304 is further executed to determine whether the cloud APN type is xcap and the operator information is matched with the target operator information; if yes, go to step 305, otherwise go to steps 306 to 308.
In step 305, a connection with the PDN is established using the cloud APN.
Step 306, detecting a plurality of access point names APN stored in the local database, and determining types corresponding to the plurality of APNs respectively.
Step 307, determining the weight score of each APN according to the types corresponding to the APNs respectively.
Step 308, establishing connection with public data network PDN according to APN with highest weight score.
According to the above mentioned format of the APN information, the APN type and the operator information can be accurately obtained, the operator information is completely the same as the target operator information of the terminal, that is, the operator mcc+mnc+cell+frequency point is completely matched with the terminal, and the APN type in the matched APN information is xcap, which indicates that the PDN link established by the APN information meets the requirement of the terminal for supporting the supplementary service. The matched APN information can be used to establish an xcap PDN link for supplementary services.
In the case that the cloud APN type is xcap and any one of two conditions of matching the operator information with the target operator information is not satisfied, the manner of determining the APN from the local database described in the first embodiment is adopted to establish the connection to the PDN, and steps 305 to 308 in this embodiment are the same as the manner of steps 101 to 103 in the first embodiment, so that the repetition is avoided.
In this embodiment, another way of obtaining the required APN from the cloud is provided, so as to more flexibly select a suitable way to establish the PDN link.
A third embodiment of the present invention relates to a PDN connection method for public data networks, wherein the flow is shown in FIG. 4, and the method comprises the following steps:
step 401, detecting a plurality of access point names APN stored in a local database, and determining types corresponding to the plurality of APNs respectively.
Step 402, determining whether the types corresponding to the APNs respectively include xcap, if not, executing step 403, and if so, executing steps 404 to 405.
Step 403, an APN with the type xcap is constructed, and connection with the PDN is established according to the constructed APN.
Under the condition that an APN with the type of xcap does not exist in the local database, reconstructing an APN with the type of xcap, for example, according to the target operator information of the terminal, determining the APN with the same operator information but the type of not xcap in the APNs stored in the local database, modifying the type of the APN to be the xcap, and keeping the rest of configuration information unchanged, thereby rapidly obtaining the APN with the type of xcap meeting the requirement.
In addition, according to the types corresponding to the APNs respectively, determining the weight score of each APN comprises the following steps: combining a plurality of APNs which are the same and different in type; wherein the weighted score of the combined APNs is greater than the weighted scores of other APNs. With apn1 in the first embodiment as cmnet, and type as default; apn2 is cmwap and type is default; apn3 is cmwop and type is default; APN4 is cmnet, type is xcap, four APNs are taken as an example, APN and APN are two APNs with the same information except for different types, APN and APN4 are combined, two types of APNs (APN is cnmet, type is default and xcap) are obtained after the combining operation, and the information of APN1 and APN4 in the original record is deleted to reduce the data size of the weight score. Assuming that the original apn has a weight score of M and the original apn4 has a weight score of R, the combined weight score of apn5 is greater than either of M and R. And the combined apn5 weight score was greater than the weight scores of apn and apn3 without combining. Similarly, three or more APNs with different types and the same rest of information exist in the local database, and the information of the APNs in the list can be combined in the same way, and corresponding weight scores are formulated for the combined APNs.
In addition, the rule for setting the weight score may be: in all APNs that are not merged, the weight score of cmwop is greater than the weight score of either of cmnet and cmwap. Because cmwop represents the APN being used by the terminal, the weight score of the APN being used by the terminal is increased, and frequent switching of the PDN link can be avoided to a certain extent. In addition, if PDN link switching occurs, the weight score of the APN used after switching is adjusted upwards on the original basis, and the weight score of the APN used when not switching is adjusted downwards on the original basis.
The above steps of the methods are divided, for clarity of description, and may be combined into one step or split into multiple steps when implemented, so long as they include the same logic relationship, and they are all within the protection scope of this patent; it is within the scope of this patent to add insignificant modifications to the algorithm or flow or introduce insignificant designs, but not to alter the core design of its algorithm and flow.
For example, the steps described in the third embodiment related to the local database may be combined with the steps described in the second embodiment related to the cloud terminal, where the steps of obtaining the APN information of the cloud terminal are preferentially performed, and the steps described in the third embodiment are performed after the cloud terminal does not obtain the required APN. By doing so, repeated access to the local database of the terminal can be avoided, after the fact that the needed APN does not exist in the local database is judged, a new APN can be directly reconstructed based on the acquired APN in the local database, and the local database is not required to be accessed when the APN is constructed.
A fourth embodiment of the invention relates to a terminal, as shown in fig. 5, comprising at least one processor 501; and a memory 502 communicatively coupled to the at least one processor 501; wherein,
the memory 502 stores instructions executable by the at least one processor 501, the instructions being executable by the at least one processor 501 to enable the at least one processor 501 to perform the public data network PDN connection method of the fourth embodiment.
Where the memory 502 and the processor 501 are connected by a bus, the bus may comprise any number of interconnected buses and bridges, the buses connecting the various circuits of the one or more processors 501 and the memory 502. The bus may also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or may be a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 501 is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor 501.
The processor 501 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 502 may be used to store data used by processor 501 in performing operations.
A fifth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The computer program implements the above-described method embodiments when executed by a processor.
That is, it will be understood by those skilled in the art that all or part of the steps in implementing the methods of the embodiments described above may be implemented by a program stored in a storage medium, where the program includes several instructions for causing a device (which may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps in the methods of the embodiments described herein. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. A public data network, PDN, connection method, comprising:
detecting a plurality of Access Point Names (APNs) stored in a local database, and determining types corresponding to the APNs respectively;
determining the weight score of each APN according to the types corresponding to the APNs respectively; wherein the weight score of the xcap type APN is larger than the weight scores of the other types of APNs;
establishing connection with a public data network PDN according to the APN with the highest weight score;
the determining the weight score of each APN according to the types corresponding to the APNs respectively comprises the following steps:
combining a plurality of APNs which are the same and different in type; wherein the weighted score of the combined APNs is greater than the weighted scores of other APNs.
2. The public data network PDN connection method according to claim 1, characterized in that before said detecting a number of access point name APNs stored in a local database, it further comprises:
judging whether the type of the current link connected with the PDN is xcap or not;
if not, continuing to execute the step of detecting the APNs stored in the local database.
3. The public data network PDN connection method according to claim 2, further comprising, in case the type of the link with PDN connection is non-xcap:
acquiring cloud APN information stored in a cloud, wherein the cloud APN information at least comprises: cloud APN type and operator information;
if the cloud APN type is xcap and the operator information is matched with the target operator information, establishing connection with a PDN according to the cloud APN information;
if the cloud APN type is non-xcap or the operator information is not matched with the target operator information, continuing to execute the step of detecting the plurality of access point name APNs stored in the local database.
4. A public data network, PDN, connection method according to claim 3, characterized in that the operator information comprises: a mobile country code MCC and a mobile network code MNC.
5. The public data network PDN connection method according to claim 1, wherein the determining the types to which the APNs respectively correspond includes:
under the condition that the types corresponding to the APNs respectively do not comprise xcap, constructing an APN with the type xcap, and establishing connection with PDN according to the constructed APN;
and executing the step of determining the weight score of each APN according to the types corresponding to the APNs respectively under the condition that the types corresponding to the APNs respectively comprise xcap.
6. The public data network PDN connection method according to claim 5, characterized in that said constructing an APN of the type xcap comprises:
and constructing an APN with the type of xcap according to the information of the target operator.
7. The public data network PDN connection method according to claim 1, characterized in that the APN includes: cmnet, cmwap, and cmwop; in all APNs that are not merged, the weight score of the cmwop is greater than the weight scores of either the cmnet and the cmwap.
8. A terminal, comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the public data network PDN connection method according to any one of claims 1 to 7.
9. A computer readable storage medium storing a computer program, which when executed by a processor implements the public data network PDN connection method of any of claims 1 to 7.
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