CN106465248B

CN106465248B - Roaming network access method and device

Info

Publication number: CN106465248B
Application number: CN201480077321.XA
Authority: CN
Inventors: 张峰; 沈丽; 姜印清; 党淑君
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2020-04-03
Anticipated expiration: 2034-03-28
Also published as: WO2015143698A1; CN106465248A

Abstract

The embodiment of the invention provides a roaming network access method and a roaming network access device, wherein the method comprises the following steps: after network search is carried out by user equipment according to a public land mobile network (RPLMN) which is successfully registered last time and a Radio Access Technology (RAT) which is successfully registered last time, if the RPLMN is judged not to be in the searched network, whether the user equipment is in an international roaming state or not is judged according to the MCC of the searched network; and if the user equipment is judged to be in the international roaming state, attempting to register on the searched network. By adopting the roaming network access method and the device provided by the embodiment of the invention, the time spent by the user equipment for network search is saved, the initial network access time of the user equipment in a roaming place is shortened, and the user experience is improved.

Description

Roaming network access method and device

Technical Field

The present invention relates to communications technologies, and in particular, to a roaming network access method and apparatus.

Background

After a User Equipment (UE) is powered on or roams, a primary task is to select a Public Land Mobile Network (PLMN) and register successfully, and only then, the UE can obtain normal communication services, such as voice and data services.

In the prior art, after the UE is powered on, the UE first attempts to register to a public land mobile network (Registered PLMN, abbreviated as RPLMN) successfully Registered with the UE last time. If the registration fails, the UE performs a full-band network search, searches all networks according to a frequency band and a Radio Access Technology (RAT) supported by the UE, and generates an available network list, where each element in the list includes a PLMN and a RAT of an available network. In order to facilitate the UE to register with the available network more quickly, the UE needs to select a PLMN from the searched available network list according to a certain rule. For example, in the 3rd Generation Partnership Project (3 GPP) protocol, the UE is specified to select PLMNs in the following order: RPLMN — > Home public land mobile network (Home PLMN, abbreviated HPLMN) — > User-controlled public land mobile network (User PLMN, abbreviated UPLMN) — > Operator-controlled public land mobile network (Operator PLMN, abbreviated OPLMN) — > other Available PLMNs (over Available PLMNs).

The duration of network search performed by the UE mainly depends on the RAT and frequency band supported by the UE, the number of coverage cells in the area where the UE is located, and the software and hardware limitations of the UE. With the commercial use of Long Term Evolution (LTE) technology, more and more RATs can be supported by the UE, and in a roaming situation, the UE needs to traverse all systems and frequency bands supported by the UE to generate an available network list, and then performs PLMN selection and registration attempt, which results in a Long network search time.

The time duration for the UE to perform PLMN selection depends mainly on the ranking of the searched available network list. In a UE roaming scenario, if the number of operators in a UE roaming place is large, the searched available network list is long, for example, there are many small operators in hong kong, the united states, and some european countries, and the number of elements in the available network list can reach tens of; in addition, the PLMN selection process is a trial and error process, for each selected PLMN and RAT, multiple rounds of signaling message interaction of the whole network are accompanied in the UE registration attempt process, and after one registration attempt fails, the UE may need to continue to attempt registration on the same PLMN and RAT until a preset stop condition is met, for example, the number of failed attempts reaches a preset number threshold of failed attempts, which results in an excessively long time for PLMN selection.

In the prior art, when a UE initially accesses a network at a roaming location, the UE needs to register to the network at the roaming location successfully after a long time, and the waiting time is too long, which affects user experience.

Disclosure of Invention

The embodiment of the invention provides a roaming network access method and a roaming network access device, which are used for reducing the time required for initial network access of user equipment at a roaming place.

In a first aspect, an embodiment of the present invention provides a roaming network entry method, where the method includes:

after network search is carried out by user equipment according to a public land mobile network (RPLMN) which is successfully registered last time and a Radio Access Technology (RAT) which is successfully registered last time, if the RPLMN is judged not to be in the searched network, whether the user equipment is in an international roaming state or not is judged according to the MCC of the searched network;

and if the user equipment is judged to be in the international roaming state, attempting to register on the searched network.

According to the first aspect, in a first possible implementation manner of the first aspect, the determining whether the ue is in an international roaming state according to the MCC of the searched network includes:

the user equipment compares the MCC of any searched network with the MCC of the HPLMN and the MCC of the RPLMN respectively;

if the MCC of any searched network is different from the MCC of the HPLMN and the MCC of the RPLMN, the user equipment is judged to be in an international roaming state.

According to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the method further includes:

if the MCC of any searched network is different from the MCC of the RPLMN and is the same as the MCC of the HPLMN, the user equipment searches the network according to the HPLMN and tries to register when the HPLMN is searched.

According to the first aspect, in a third possible implementation manner of the first aspect, after the determining that the RPLMN is not present in the searched network, the method further includes:

the user equipment judges whether the HPLMN does not appear in the searched network;

if the HPLMN is determined to be present in the searched network, the user equipment attempts to register with the HPLMN.

In a second aspect, an embodiment of the present invention provides a roaming network entry method, where the method includes:

the user equipment judges whether the user equipment is in an international roaming state or not according to the MCC of the PLMN supported by the resident limited service cell;

if so, selecting a network matched with the MCC of the PLMN supported by the resident limited service cell from the preferred roaming list, and searching and registering the network; the priority roaming list is used for indicating information of networks which are preferentially attempted to be registered when the user roams.

According to the second aspect, in a first possible implementation manner of the second aspect, the selecting, from a preferred roaming list, a network matching an MCC of a PLMN supported by the camped restricted serving cell for network search and registration includes:

the user equipment judges whether the PLMN supported by the resident restricted serving cell is included in a priority roaming list or not;

if yes, the user equipment attempts to register to a PLMN supported by the resident limited serving cell;

if not, the user equipment selects a network matched with the MCC of the PLMN supported by the resident limited service cell from the priority roaming list as a network to be searched; determining a frequency band matched with the network to be searched; network searching is carried out according to the network to be searched and the determined frequency band matched with the network to be searched; and registering according to the searched network.

According to the second aspect, in a second possible implementation manner of the second aspect, the determining, by the ue, whether the ue is in an international roaming state according to an MCC of a PLMN supported by a camped restricted serving cell includes:

the user equipment compares the MCC of the PLMN supported by the resident limited service cell with the MCC of the HPLMN and the MCC of the RPLMN respectively;

if the MCC of the PLMN supported by the resident limited service cell is different from the MCC of the HPLMN and the MCC of the RPLMN, the user equipment is determined to be in an international roaming state.

According to a second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the method further includes:

and if the MCC of the PLMN supported by the resident limited service cell is different from the MCC of the RPLMN and is the same as the MCC of the HPLMN, the user equipment searches a network according to the HPLMN and tries to register when the HPLMN is searched.

According to the second aspect and any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the prioritized roaming list is at least one of the following: an OPLMN; UPLMN; historical roaming information, wherein the historical roaming information is used for recording networks which are successfully and/or unsuccessfully registered when the user roams.

In a third aspect, an embodiment of the present invention provides a roaming network access apparatus, where the apparatus includes:

the search module is used for carrying out network search according to the RPLMN which is successfully registered last time and the RAT which is successfully registered last time;

a judging module, configured to, after the searching module performs network search according to the RPLMN and the RAT successfully registered last time, if it is determined that the RPLMN is not present in the network searched by the searching module, judge whether the user equipment is in an international roaming state according to a mobile country code MCC of the searched network;

and the registration module is used for trying to register on the searched network if the judgment module judges that the user equipment is in the international roaming state.

According to the third aspect, in a first possible implementation manner of the third aspect, the determining module is specifically configured to:

comparing the MCC of any searched network with the MCC of the HPLMN and the MCC of the RPLMN respectively;

According to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the search module is further configured to:

if the MCC of any searched network is different from the MCC of the RPLMN and is the same as the MCC of the HPLMN, network searching is carried out according to the HPLMN;

the registration module is further configured to attempt registration when the search module searches for the HPLMN.

According to the third aspect, in a third possible implementation manner of the third aspect, the determining module is further configured to: after said determining that said RPLMN is not present in said searched network, determining whether a HPLMN is not present in said searched network;

the registration module is further configured to attempt to register with the HPLMN if the determination module determines that the HPLMN is present in the searched network.

In a fourth aspect, an embodiment of the present invention provides a roaming network access apparatus, where the apparatus includes:

a judging module, configured to judge whether the ue is in an international roaming state according to an MCC of a PLMN supported by a camped restricted serving cell;

a registration module, configured to select, if the determining module determines that the ue is in the international roaming state, a network matching the MCC of the PLMN supported by the resident restricted serving cell from a preferred roaming list, and perform network search and registration; the priority roaming list is used for indicating information of networks which are preferentially attempted to be registered when the user roams.

According to a fourth aspect, in a first possible implementation manner of the fourth aspect, the registration module is specifically configured to: determining whether a PLMN supported by the camped restricted serving cell is included in a priority roaming list;

if so, attempting to register to a PLMN supported by the resident restricted serving cell;

if not, selecting a network matched with the MCC of the PLMN supported by the resident limited service cell from the priority roaming list as a network to be searched; determining a frequency band matched with the network to be searched; network searching is carried out according to the network to be searched and the determined frequency band matched with the network to be searched; and registering according to the searched network.

According to a fourth aspect, in a second possible implementation manner of the fourth aspect, the determining module is specifically configured to: comparing the MCC of PLMN supported by the resident limited service cell with MCC of HPLMN and MCC of RPLMN respectively;

According to the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the registration module is further configured to: and if the MCC of the PLMN supported by the resident limited service cell is different from the MCC of the RPLMN and is the same as the MCC of the HPLMN, network searching is carried out according to the HPLMN, and registration is attempted when the HPLMN is searched.

According to the fourth aspect and any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the prioritized roaming list is at least one of the following: OPLMN, UPLMN, and historical roaming information; the historical roaming information is used for recording the network which is successfully and/or unsuccessfully registered when the user roams.

Compared with the prior art, by adopting the roaming network access method and device provided by the embodiment of the invention, when the user equipment initially accesses the network at the roaming place, after network search aiming at the RPLMN and the RAT successfully registered last time is completed, when the RPLMN is not searched, the user equipment does not need to traverse all OTHER supported RATs and frequency bands, and does not need to search and select the PLMN according to the sequence of HPLMN- - > UPLMN- - > OPLMN- - > OTHER Available PLMN, but directly tries to register aiming at the searched network after the user equipment is judged to be in international roaming according to the MCC at the roaming place, so that the time spent by the user equipment in network search is saved, the time spent by the user equipment in initial network access at the roaming place is shortened, and the user experience is improved.

Drawings

Fig. 1 is a flowchart of a roaming network entry method according to an embodiment of the present invention;

fig. 2 is another flowchart of a roaming network entry method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a roaming network access apparatus according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a roaming network access apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a roaming network access device according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a flowchart of a roaming network entry method according to an embodiment of the present invention. As shown in fig. 1, the method includes:

101. after network search is carried out by user equipment according to a public land Mobile network (RPLMN) which is successfully registered last time and a Radio Access Technology (RAT) which is successfully registered last time, if the RPLMN is judged not to be in the searched network, whether the user equipment is in an international roaming state or not is judged according to a Mobile Country Code (MCC) of the searched network.

102. And if the user equipment is judged to be in the international roaming state, attempting to register on the searched network.

And if the non-international roaming state of the user equipment is judged, the user equipment carries out network search according to the next RAT supported by the RPLMN.

The method can be applied to the scene that the user equipment initially accesses the network at the roaming place. The user equipment may be a cellular phone (cellular phone), a tablet computer, or other communication equipment. It can be understood that: the searched network may be a network of a roaming place, and the MCC of the searched network is the MCC of the roaming place.

After the user equipment tries to register on the searched network in sequence, if the registration is not successful, network searching for the next system is tried according to the RAT list supported by the user equipment and the RAT and the frequency band supported by the roaming place.

Compared with the prior art, by adopting the roaming network access method provided by the embodiment of the invention, when the user equipment initially accesses the network at the roaming place, after network search aiming at the RPLMN and the RAT successfully registered last time is completed, when the RPLMN is judged not to be searched, the user equipment does not need to traverse all OTHER supported RATs and frequency bands, and does not need to search and select the PLMN according to the sequence of HPLMN- - > UPLMN- - > OPLMN- - > OTHER Available PLMN, but directly tries to register aiming at the searched network according to the MCC at the roaming place after the user equipment is judged to be in international roaming, so that the time spent by the user equipment in network search is saved, the time spent by the user equipment in initial network access at the roaming place is shortened, and the user experience is improved.

Optionally, on the basis of the foregoing embodiment, a feasible implementation manner of determining whether the ue is in the international roaming state according to the MCC of the searched network is as follows:

Optionally, on the basis of the foregoing embodiment, after the user equipment performs network search according to the RPLMN and the RAT successfully registered last time, if it is determined that the RPLMN does not appear in the searched network, then: the user equipment judges whether the HPLMN does not appear in the searched network, and if so, the user equipment tries to register to the HPLMN; if not, judging whether the user equipment is in the international roaming state according to the MCC of the searched network, and sequentially selecting the searched network according to priority and trying to register when judging that the user equipment is in the international roaming state until the registration is successful.

Fig. 2 is another flowchart of a roaming network entry method according to an embodiment of the present invention. As shown in fig. 2, the method includes:

201. the user equipment acquires the MCC of the PLMN supported by the resident limited service cell.

202. The user equipment judges whether the user equipment is in an international roaming state or not according to the MCC of the PLMN supported by the resident limited service cell; if yes, go to step 203; if not, go to step 204.

203. And selecting a network matched with the MCC of the PLMN supported by the resident limited service cell from a priority roaming list for network search and registration, wherein the priority roaming list is used for indicating information of networks which are preferentially tried to be registered when the user roams.

204. And searching the network according to the RPLMN and the RAT successfully registered last time.

The method can be applied to the scene that the user equipment initially registers for network access at a roaming place. The user equipment may be a cellular phone (cellular phone), a tablet computer, or other communication equipment. It can be understood that: the searched network is a network of a roaming place, and the MCC of the PLMN supported by the limited service cell of the resident emergency service cell is the MCC of the roaming place. The information of the network in the priority roaming list includes PLMN information of the network, or PLMN information of the network and information of one RAT supported by the PLMN.

Optionally, the preferred roaming list is at least one of: operator controlled public land mobile network OPLMN, user controlled public land mobile network UPLMN, and historical roaming information; the historical roaming information is used for recording the network which is successfully and/or unsuccessfully registered when the user roams.

Compared with the prior art, by adopting the roaming network access method provided by the embodiment of the invention, when the user equipment initially accesses the network in a roaming place, the RPLMN does not need to be searched and all the RATs and frequency bands supported by the RPLMN do not need to be traversed, and the PLMN does not need to be searched and selected according to the sequence of HPLMN- - > UPLMN- - > OPLMN- - > OTHER Available PLMN; but when limited service (limited) is judged, whether the user equipment is in an international roaming state is determined according to the MCC of the PLMN supported by the limited service cell, if the user equipment is judged to be in the international roaming state, a network matched with the MCC of the PLMN supported by the limited service cell is directly selected from the priority roaming list, and network searching and registering processes are performed, so that the time spent by the user equipment in network searching is saved, the initial network access time of the user equipment in a roaming place is shortened, and the user experience is improved.

Optionally, on the basis of the foregoing embodiment, one possible implementation manner of selecting a network matching the MCC of the PLMN supported by the camped restricted serving cell from the preferred roaming list to perform network search and registration is as follows:

Optionally, if the ue determines that the PLMN supported by the camped restricted serving cell is not included in the preferred roaming list, then: and selecting a PLMN matched with the MCC of the PLMN supported by the resident limited serving cell from the priority roaming list as a PLMN to be searched, and acquiring the RAT which can be supported by the PLMN to be searched from the priority roaming list. Optionally, the number of RATs that the PLMN to be searched may support may be one or more. The user equipment determines the available frequency bands of all RATs which can be supported by the PLMN to be searched according to the frequency band list, and generates an attempted search list; each element in the attempted search list includes: a RAT which can be supported by the PLMN to be searched and the determined available frequency band of the RAT; selecting one element in the trial search list, searching the network, and registering according to the searched network; if the registration is successful, stopping network search; if not, selecting the next element in the trial search list, and carrying out network search and registration until the registration is successful. The frequency band list stores global MCC-MNC, system and frequency band information, and is stored in the user equipment in the form of a database and can be dynamically updated.

It can be understood that, after the user equipment selects a network matching the MCC of the PLMN supported by the camped restricted serving cell from the priority roaming list, further, according to a preset policy and the performance (for example, a coverage index or an access index) of each matched network, a network with the best performance is selected from the matched networks for network search and registration.

Optionally, on the basis of the foregoing embodiment, a feasible implementation manner of determining, by the user equipment, whether the user equipment is in the international roaming state according to the MCC of the PLMN supported by the camped restricted serving cell is as follows:

the user equipment compares the MCC of the PLMN supported by the resident limited service cell with the MCC of a Home Public Land Mobile Network (HPLMN) and the MCC of a public land mobile network (RPLMN) which is successfully registered last time respectively;

Optionally, the RATs in the priority roaming list are all RATs that the user equipment can support.

Optionally, on the basis of the foregoing embodiment, the historical roaming information includes a first roaming network list, and/or a second roaming network list; the first roaming network list is used for recording networks which are successfully registered when the user roams, and the second roaming network list is used for recording networks which are not successfully registered when the user roams.

Further, if the preferred roaming list includes the historical roaming information, the user equipment updates the historical roaming information in real time according to whether the registration is successful or not after attempting to register to a searched PLMN each time:

(1) when the first roaming network list is included in the historical roaming information:

if the user equipment judges that the searched PLMN cannot be successfully registered, judging whether the searched PLMN appears in the first roaming network list, and deleting the searched PLMN from the first roaming network list when the searched PLMN is confirmed to appear in the first roaming network list;

if the user equipment determines that the user equipment is successfully registered to the searched PLMN, the user equipment determines whether the searched PLMN appears in the first roaming network list, and adds the searched PLMN in the first roaming network list when confirming that the searched PLMN does not appear in the first roaming network list.

(2) When the second roaming network list is included in the historical roaming information:

if the user equipment judges that the searched PLMN cannot be successfully registered, judging whether the searched PLMN appears in the second roaming network list, and adding the searched PLMN in the second roaming network list when the searched PLMN is confirmed not to appear in the second roaming network list;

if the user equipment judges that the user equipment is successfully registered to the searched PLMN, judging whether the searched PLMN appears in the second roaming network list, and deleting the searched PLMN from the second roaming network list when the searched PLMN is confirmed to appear in the second roaming network list.

Optionally, on the basis of the foregoing embodiment, the priority roaming list is stored in a non-volatile memory (non-volatile memory) of the user equipment.

Further, the backup of the priority roaming list is stored in the cloud. The cloud is used for storing a priority roaming list of at least one user and respectively storing the priority roaming list of each user according to the identification of each user; the identification may be information representing the identity of the user, such as the cloud account number, the telephone number, or the IMEI number of the user equipment of the user. When the user loses the user equipment or changes the user equipment, the user equipment after the user equipment is changed can obtain the priority roaming list of the user from the cloud.

One possible implementation manner for the ue to obtain the preferred roaming list is as follows: the user equipment detects whether the priority roaming list is stored in a nonvolatile memory of the user equipment; if not, the user equipment acquires a priority roaming list stored in the cloud end from the cloud end; if so, the user equipment acquires a priority roaming list from a nonvolatile memory and performs information synchronization with the cloud end, so that the version information (such as a synchronization identifier and a timestamp) of the priority roaming list stored in the nonvolatile memory of the user equipment is consistent with the version information (such as a synchronization identifier and a timestamp) of the priority roaming list stored in the cloud end.

Further, after the priority roaming list is updated, the user equipment performs information synchronization with the cloud end, and synchronously uploads the change condition of the information stored in the priority roaming list to the cloud end so as to update the priority roaming list and the version information stored in the cloud end.

Optionally, on the basis of the above embodiment, the preferred roaming list is stored in a Subscriber Identity Module (SIM). One possible implementation way to store the preferred roaming list in the subscriber identity module is: adding a new basic File (element File, abbreviated as EF) to the SIM: a roaming EF (EF-Roam) for storing a user's prioritized roaming list.

Taking the case that the priority roaming list records the historical roaming information as an example: when the user equipment initially roams into the network at the roaming place:

and after receiving the successful registration or location updating message, storing the information of the available network with successful current registration into the EF-Roam.

When the registration request of the user equipment is rejected, for example, the reject reason is that PLMN is unavailable (PLMN not reached), the user equipment determines whether an available network for which the current registration fails appears in EF-Roam; if so, it is deleted from EF-Roam.

Optionally, a validity time field is set in EF-Roam. And starting a valid time when the information of a certain available network is newly added into the EF-Roam, and automatically deleting the information of the available network from the EF-Roam when the valid time expires.

Fig. 3 is a schematic structural diagram of a roaming network access device according to an embodiment of the present invention. As shown in fig. 3, a roaming network access apparatus 300 according to an embodiment of the present invention includes:

a searching module 301, configured to perform network search according to the public land mobile network RPLMN successfully registered last time and the radio access technology RAT successfully registered last time;

a determining module 302, configured to, after the searching module 301 performs network search according to the RPLMN and the RAT successfully registered last time, if it is determined that the RPLMN is not present in the network searched by the searching module 301, determine whether the ue is in an international roaming state according to a mobile country code MCC of the searched network;

a registering module 303, configured to attempt to register on the searched network if the determining module 302 determines that the ue is in the international roaming state.

The roaming network access device 300 provided by the embodiment of the present invention may be disposed on a user equipment. The roaming network access apparatus 300 may be configured to execute the technical solution of the method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.

Optionally, the determining module 302 is specifically configured to:

comparing the MCC of any searched network with the MCC of a Home Public Land Mobile Network (HPLMN) and the MCC of the RPLMN respectively;

Further, the search module 301 is further configured to:

the registration module 303 is further configured to attempt registration when the search module searches for the HPLMN.

Optionally, the determining module 302 is further configured to:

after said determining that said RPLMN is not present in said searched network, determining whether a HPLMN is not present in said searched network;

the registering module 303 is further configured to attempt to register with the HPLMN if the determining module 302 determines that the HPLMN is present in the searched network.

Fig. 4 is another schematic structural diagram of a roaming network access device according to an embodiment of the present invention. As shown in fig. 4, a roaming network access apparatus 400 according to an embodiment of the present invention includes:

a determining module 401, configured to determine whether the ue is in an international roaming state according to a mobile country code MCC of a public land mobile network PLMN supported by a resident restricted serving cell;

a registration module 402, configured to select, if the determining module 401 determines that the ue is in the international roaming state, a network matching the MCC of the PLMN supported by the resident restricted serving cell from a preferred roaming list, and perform network search and registration; the priority roaming list is used for indicating information of networks which are preferentially attempted to be registered when the user roams.

The roaming network access apparatus 400 provided by the embodiment of the present invention may be disposed on a user equipment. The roaming network access apparatus 400 may be configured to execute the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.

Optionally, the registration module 402 is specifically configured to: determining whether a PLMN supported by the camped restricted serving cell is included in a priority roaming list;

Optionally, the determining module 401 is specifically configured to: comparing the MCC of the PLMN supported by the resident limited service cell with the MCC of the home public land mobile network HPLMN and the MCC of the public land mobile network RPLMN which is successfully registered last time;

Further, the registration module 402 is further configured to:

and if the MCC of the PLMN supported by the resident limited service cell is different from the MCC of the RPLMN and is the same as the MCC of the HPLMN, network searching is carried out according to the HPLMN, and registration is attempted when the HPLMN is searched.

Optionally, on the basis of the foregoing embodiment, the prioritized roaming list is at least one of: operator controlled public land mobile network OPLMN, user controlled public land mobile network UPLMN, and historical roaming information; the historical roaming information is used for recording the network which is successfully and/or unsuccessfully registered when the user roams.

Fig. 5 is a schematic structural diagram of a roaming network access device according to an embodiment of the present invention. As shown in fig. 5, a roaming network access apparatus 500 according to an embodiment of the present invention includes: an input unit 501, a processor unit 502, an output unit 503, a communication unit 504, a storage unit 505, a peripheral interface 506, a power supply 507, and the like. These components communicate over one or more buses. Those skilled in the art will appreciate that the structure of the roaming device 500 shown in fig. 5 is not intended to limit the invention, and may be a bus structure, a star structure, more or less components than those shown in fig. 5, some components in combination, or a different arrangement of components. In the embodiment of the present invention, the roaming device 500 may be any mobile or portable communication device, including but not limited to a mobile phone, a mobile computer, a tablet computer, a Personal Digital Assistant (PDA), a media player, a smart tv, a combination of two or more of the above, and the like.

The input unit 501 is used to implement interaction between a user and the roaming network access device 500 and/or input information into the roaming network access device 500. For example, the input unit 501 may receive numeric or character information input by a user to generate a signal input related to user setting or function control. In the embodiment of the present invention, the input unit 501 may be a touch panel, other human-computer interaction interfaces, such as physical input keys and a microphone, or other external information capturing devices, such as a camera. A touch panel, also referred to as a touch screen or touch screen, may collect an operation action on which a user touches or approaches. For example, the user uses any suitable object or accessory such as a finger, a stylus, etc. to operate on or near the touch panel, and drives the corresponding connection device according to a preset program. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects touch operation of a user, converts the detected touch operation into an electric signal and transmits the electric signal to the touch controller; the touch controller receives the electrical signal from the touch sensing device and converts it to touch point coordinates, which are fed to the processor unit 502. The touch controller can also receive and execute commands sent by the processor unit 502. In addition, the touch panel may be implemented in various types, such as resistive, capacitive, Infrared (Infrared), and surface acoustic wave. In other embodiments of the present invention, the physical input keys employed by the input unit 501 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a track ball, a mouse, a joystick, etc. An input unit in the form of a microphone may collect speech input by a user or the environment and convert it into commands in the form of electrical signals that are executable by the processor unit 502.

In some other embodiments of the present invention, the input unit 501 may also be various sensing devices, such as hall devices, for detecting physical quantities of the roaming device 500, such as force, moment, pressure, stress, position, displacement, speed, acceleration, angle, angular velocity, number of revolutions, rotational speed, and time of change of operating state, and converting the physical quantities into electric quantities for detection and control. Other sensing devices may also include gravity sensors, three-axis accelerometers, gyroscopes, etc.

The processor unit 502 is a control center of the roaming network-accessing device 500, connects various parts of the whole roaming network-accessing device 500 by using various interfaces and lines, and executes various functions and/or processes data of the roaming network-accessing device 500 by running or executing software programs and/or modules stored in the storage unit 505 and calling data stored in the storage unit 505. The processor unit 502 may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the Processor Unit 502 may include only a Central Processing Unit (CPU), or may be a combination of a GPU, a Digital Signal Processor (DSP), and a control chip (e.g., a baseband chip) in the communication Unit 504. In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.

The communication unit 504 is configured to communicate between the roaming network accessing apparatus 500 and other devices; data packets may be received or transmitted through the communication unit 504. The communication unit 504 may include a Wireless local area Network (wlan) module, a bluetooth module, a baseband (Base Band) module, and other communication modules, and a Radio Frequency (RF) circuit corresponding to the communication module, and is configured to perform wlan communication, bluetooth communication, infrared communication, and/or cellular communication system communication, such as wideband code Division Multiple Access (W-CDMA) and/or High Speed Downlink Packet Access (HSDPA). The communication module is used for controlling communication of each component in the roaming network Access apparatus 500, and may support Direct Memory Access (Direct Memory Access).

In different embodiments of the present invention, the various communication modules in the communication unit 504 are generally in the form of Integrated Circuit chips (Integrated Circuit chips), and may be selectively combined without including all the communication modules and corresponding antenna groups. For example, the communication unit 504 may include only a baseband chip, a radio frequency chip, and a corresponding antenna to provide communication functions in a cellular communication system. The roaming device 500 may be connected to a cellular network (cellular network) or the Internet (Internet) via a wireless communication connection established by the communication unit 504, such as a wireless local area network access or a WCDMA access. In some alternative embodiments of the present invention, the communication module, e.g., the baseband module, in the communication unit 504 may be integrated into the processor unit 502, typically as the APQ + MDM family of platforms provided by the high-pass (Qualcomm) corporation.

The output unit 503 includes, but is not limited to, an image output unit and a sound output unit. The image output unit is used for outputting characters, pictures and/or videos. The image output unit may include a Display panel, such as a Display panel configured in the form of an LCD (liquid crystal Display), an OLED (Organic Light-Emitting Diode), a Field Emission Display (FED), and the like. Alternatively, the image output unit may include a reflective display, such as an electrophoretic (electrophoretic) display, or a display using an Interferometric Modulation of Light (Interferometric Modulation). The image output unit may include a single display or a plurality of displays of different sizes. In an embodiment of the present invention, the touch panel used by the input unit 501 may also be used as a display panel of the output unit 503. For example, when the touch panel detects a gesture operation of touch or proximity thereon, the gesture operation is transmitted to the processor unit 502 to determine the type of the touch event, and then the processor unit 502 provides a corresponding visual output on the display panel according to the type of the touch event. Although the input unit 501 and the output unit 503 are shown as two separate components in fig. 5 to implement the input and output functions of the roaming network device 500, in some embodiments, the touch panel may be integrated with the display panel to implement the input and output functions of the roaming network device 500. For example, the image output unit may display various Graphical User Interfaces (GUIs) as virtual control elements, including but not limited to windows, scroll shafts, icons, and scrapbooks, for a user to operate in a touch manner.

In one embodiment of the present invention, the image output unit includes a filter and an amplifier for filtering and amplifying the video output by the processor unit 502. The audio output unit includes a digital-to-analog converter for converting the audio signal output by the processor unit 502 from a digital format to an analog format.

The storage unit 505 may be used to store software programs and modules, and the processor unit 502 executes various functional applications of the roaming network-accessing apparatus 500 and implements data processing by running the software programs and modules stored in the storage unit 505. The storage unit 505 mainly includes a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, such as a sound playing program, an image playing program, and the like; the data storage area may store data (such as audio data, a phonebook, etc.) created according to the use of the roaming network-accessing apparatus 500, and the like. In an embodiment of the invention, the Memory unit 505 may include a volatile Memory, such as a Nonvolatile dynamic Random Access Memory (NVRAM), a Phase change Random Access Memory (PRAM), a Magnetoresistive Random Access Memory (MRAM), and the like, and may further include a Nonvolatile Memory, such as at least one magnetic disk Memory device, an electrically erasable Programmable Read-Only Memory (EEPROM), a flash Memory device, such as a NAND flash Memory (NAND flash Memory), or a NAND flash Memory. The non-volatile memory stores an operating system and application programs executed by the processor unit 502. The processor unit 502 loads operating programs and data from the non-volatile memory into memory and stores digital content in mass storage devices. The operating system includes various components and/or drivers for controlling and managing conventional system tasks, such as memory management, storage device control, power management, etc., as well as facilitating communication between various hardware and software components. In the embodiment of the present invention, the operating system may be an Android system developed by Google, an iOS system developed by Apple, a Windows operating system developed by Microsoft, or an embedded operating system such as Vxworks.

The application programs include any application installed on the roaming network-accessing device 500, including but not limited to a browser, e-mail, instant messaging service, word processing, keyboard virtualization, Widget (Widget), encryption, digital rights management, voice recognition, voice replication, positioning (e.g., functions provided by the global positioning system), music playing, and the like.

Specifically, in the embodiment of the present invention, the communication unit 504 performs network search according to the last successfully registered public land mobile network RPLMN and the last successfully registered radio access technology RAT. The storage unit 505 may store the network searched by the communication unit 504. The storage unit 505 stores program data, and the processor unit 502 executes the program data to determine whether the RPLMN is present in the searched network of the storage unit 505 after the communication unit 504 performs network search according to a last successfully registered public land mobile network RPLMN and a last successfully registered radio access technology RAT; if the RPLMN is not found in the searched network, determining whether the roaming network access device 500 is in an international roaming state according to the mobile country code MCC of the searched network; if it is determined that the network is in the international roaming state, registration is attempted on the network searched by the communication unit 504.

Alternatively, in another embodiment of the present invention, the communication unit 504 is configured to obtain a priority roaming list from a network server, where the priority roaming list is used to indicate information of networks that the user preferentially attempts to register when roaming. Alternatively, the storage unit 505 may store the priority roaming list. The memory unit 505 stores program data, and the processor unit 502 executes the program data to determine whether the roaming access device 500 is in the international roaming state according to the mobile country code MCC of the public land mobile network PLMN supported by the resident restricted serving cell; if yes, a network matching the MCC of the PLMN supported by the camped restricted serving cell is selected from the priority roaming list acquired by the communication unit 504 or the priority roaming list stored in the storage unit 505, and network search and registration are performed.

The power supply 507 is used to supply power to the various components of the roaming network device 500 to maintain its operation. As a general understanding, the power source may be a built-in battery, such as a common lithium ion battery, a nickel metal hydride battery, or the like, and also include an external power source, such as an AC adapter, or the like, for directly supplying power to the roaming network access device 500. In some embodiments of the present invention, the power supply 507 may be more broadly defined and may include, for example, a power management system, a charging system, a power failure detection circuit, a power converter or inverter, a power status indicator (e.g., a light emitting diode), and any other components associated with power generation, management, and distribution of the roaming device 500.

It should be noted that the term "and/or" is only one kind of association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Moreover, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are merely distinguished to illustrate the technical solutions of the present invention, and the technical solutions provided by the embodiments may be mutually referred to or combined. While the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roaming network entry method, comprising:

after network search is carried out by user equipment according to a public land mobile network (RPLMN) which is successfully registered last time and a Radio Access Technology (RAT) which is successfully registered last time, if the RPLMN and the HPLMN are judged not to be present in the searched network, whether the user equipment is in an international roaming state or not is judged according to a Mobile Country Code (MCC) of the searched network;

if the user equipment is judged to be in the international roaming state, attempting to register on the searched network;

wherein, the determining whether the ue is in the international roaming state according to the MCC of the searched network includes:

the user equipment compares the MCC of any searched network with the MCC of a Home Public Land Mobile Network (HPLMN) and the MCC of the RPLMN respectively;

2. The method of claim 1, further comprising:

3. A roaming network entry method, comprising:

the user equipment judges whether the user equipment is in an international roaming state or not according to a mobile country code MCC of a public land mobile network PLMN supported by a resident limited service cell;

if so, selecting a network matched with the MCC of the PLMN supported by the resident limited service cell from the preferred roaming list, and searching and registering the network; the priority roaming list is used for indicating the information of the network which is preferentially tried to be registered when the user roams;

the determining, by the ue, whether the ue is in an international roaming state according to the MCC of the PLMN supported by the camped restricted serving cell includes:

4. The method of claim 3, wherein selecting the network from the preferred roaming list that matches the MCC of the PLMN supported by the camped restricted serving cell for network search and registration comprises:

5. The method of claim 3, further comprising:

6. The method of any of claims 3-5, wherein the prioritized roaming list is at least one of: operator controlled public land mobile network OPLMN, user controlled public land mobile network UPLMN, and historical roaming information; the historical roaming information is used for recording the network which is successfully and/or unsuccessfully registered when the user roams.

7. A roaming network access apparatus, comprising:

a judging module, configured to, after the searching module performs network search according to the RPLMN and the RAT that has been successfully registered last time, if it is determined that neither the RPLMN nor the HPLMN is present in the network searched by the searching module, judge whether the user equipment is in an international roaming state according to a mobile country code MCC of the searched network;

a registration module, configured to attempt registration on the searched network if the determining module determines that the ue is in an international roaming state;

wherein, the judging module is specifically configured to:

8. The apparatus of claim 7, wherein the search module is further configured to:

9. A roaming network access apparatus, comprising:

the judging module is used for judging whether the user equipment is in an international roaming state or not according to the mobile country code MCC of the public land mobile network PLMN supported by the resident limited service cell;

a registration module, configured to select, if the determining module determines that the ue is in the international roaming state, a network matching the MCC of the PLMN supported by the resident restricted serving cell from a preferred roaming list, and perform network search and registration; the priority roaming list is used for indicating the information of the network which is preferentially tried to be registered when the user roams;

wherein, the judging module is specifically configured to: comparing the MCC of the PLMN supported by the resident limited service cell with the MCC of the home public land mobile network HPLMN and the MCC of the public land mobile network RPLMN which is successfully registered last time;

10. The apparatus of claim 9, wherein the registration module is specifically configured to: determining whether a PLMN supported by the camped restricted serving cell is included in a priority roaming list;

11. The apparatus of claim 9, wherein the registration module is further configured to:

12. The apparatus of any of claims 9-11, wherein the prioritized roaming list is at least one of: operator controlled public land mobile network OPLMN, user controlled public land mobile network UPLMN, and historical roaming information; the historical roaming information is used for recording the network which is successfully and/or unsuccessfully registered when the user roams.