CN114079905A - Roaming returning method, device and terminal - Google Patents
Roaming returning method, device and terminal Download PDFInfo
- Publication number
- CN114079905A CN114079905A CN202010812507.2A CN202010812507A CN114079905A CN 114079905 A CN114079905 A CN 114079905A CN 202010812507 A CN202010812507 A CN 202010812507A CN 114079905 A CN114079905 A CN 114079905A
- Authority
- CN
- China
- Prior art keywords
- hplmn
- frequency point
- vplmn
- roaming
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000004891 communication Methods 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
Abstract
The invention provides a roaming return method, a roaming return device and a terminal. The method comprises the following steps: and under the state that the terminal is accessed to the public land mobile network VPLMN of the visited place, after the service connection state enters an idle state, searching the public land mobile network HPLMN of the home place. By adopting the method, the terminal can actively and autonomously complete the search return of the HPLMN after roaming from the HPLMN to the VPLMN so as to quickly return to the HPLMN.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a roaming return method, apparatus, and terminal.
Background
When the inter-operator roaming is adopted, the roaming area has no network deployment of the home operator, so the terminal roaming-out and roaming-back generally adopt a way of off-network re-search. Now, consider a special different network roaming scenario, in the roaming area, the home operator has deployed the access network, so the terminal cannot roam out and back in the way of off-line re-search. In this scenario, a solution for effluvium and effluvium needs to be considered.
At this point, the flooding out and flooding back may be considered with network controlled redirection. The redirection during the overtaking process is controlled by a home network, and is easy to implement; the redirection during the return is controlled by the visited place network, and the visited place network may not know the time for triggering the terminal to return or directly kick the terminal maliciously, so the redirection controlled by the visited place network is not easy to implement.
Since the heterogeneous network roams to the network of the visited operator and generates data service traffic, the settlement of roaming traffic fee is usually accompanied, so that when the user is forced to roam to the network of the visited operator to develop data service due to high network load of the home operator, the user should fast roam back to the network of the home operator.
Disclosure of Invention
The technical scheme of the invention aims to provide a roaming return method, a roaming return device and a terminal, which can realize that the terminal quickly returns to a home operator network.
One embodiment of the present invention provides a roaming returning method, which is applied to a terminal, wherein the method includes:
and under the state that the terminal is accessed to the public land mobile network VPLMN of the visited place, after the service connection state enters an idle state, searching the public land mobile network HPLMN of the home place.
Optionally, the roaming returning method, wherein after entering the idle state from the service connection state, performing a search of a home public land mobile network HPLMN includes:
when the business connection state enters an idle state, the HPLMN is immediately searched; and/or
And after the service connection state enters an idle state, the timing time of the timer started when the VPLMN is accessed is overtime, and the HPLMN is searched.
Optionally, the roaming return method, wherein the performing the search for the HPLMN includes:
sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
sequentially carrying out downlink synchronization on the multiple frequency points according to the sequence of the signal intensity measured by the multiple frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and when the target frequency point is judged to meet the cell access condition, cell selection is carried out.
Optionally, the method for returning roaming includes:
receiving a cell broadcast message at the target frequency point;
and judging that the PLMN of the cell corresponding to the target frequency point accords with the HPLMN according to the cell broadcast message, and judging that the target frequency point meets the cell access condition when the signal intensity of the target frequency point meets a preset cell residence threshold.
Optionally, the method for returning roaming includes:
and determining the priority arrangement order of the plurality of frequency points of the HPLMN according to a pre-stored frequency point set comprising the plurality of frequency points, wherein the priority arrangement order of the plurality of frequency points is pre-stored in the frequency point set.
Optionally, the method for returning roaming includes:
determining the frequency point with the highest priority in the plurality of frequency points according to one of the following modes:
determining the frequency point located in the HPLMN before entering the VPLMN as the highest priority frequency point;
determining the frequency point with the highest priority in the system message read in the HPLMN before entering the VPLMN as the frequency point with the highest priority;
and determining that the frequency point with the highest priority in the frequency points acquired by a Radio Resource Control (RRC) signaling in the HPLMN before entering the VPLMN is the frequency point with the highest priority.
Optionally, the method for returning roaming includes:
before entering the VPLMN, when the HPLMN is connected, updating the priority ranking order according to the priority of the frequency point in the system message or RRC signaling sent by the network.
Optionally, the method for returning roaming includes:
and if the plurality of frequency points are sequentially subjected to downlink synchronization according to the sequence of the signal intensity measured by the plurality of frequency points from high to low, and each frequency point cannot be successfully subjected to downlink synchronization, executing full-band scanning.
Optionally, the method for returning roaming includes:
in the state that the terminal is accessed to the VPLMN, if an RRC release message is received and the RRC release message does not carry redirection frequency point information, the terminal is determined to enter an idle state from a service connection state.
Optionally, in the roaming return method, the networks corresponding to the multiple frequency points of the HPLMN and the VPLMN belong to the same generation of communication network, or the networks corresponding to the multiple frequency points of the HPLMN belong to a lower generation of communication network of the VPLMN.
Optionally, the roaming return method, wherein the timing time of the timer includes a first timing time that is a preset time from the access time of the VPLMN and a plurality of second timing times that are spaced at a time period T after the first timing time.
Another embodiment of the present invention further provides a roaming returning apparatus, which is applied to a terminal, wherein the apparatus includes:
and the searching module is used for searching the home public land mobile network HPLMN after the service connection state enters an idle state under the state that the terminal accesses the visited public land mobile network VPLMN.
Another embodiment of the present invention further provides a terminal, including: a processor, a memory, and a program stored on the memory and executable on the processor, the program when executed by the processor implementing a roaming return method as in any one of the above.
An embodiment of the present invention further provides a readable storage medium, where the readable storage medium stores a program, and the program, when executed by a processor, implements the steps in the roaming return method described in any one of the above.
At least one of the above technical solutions of the present invention has the following beneficial effects:
in the roaming returning method of the embodiment of the invention, when the terminal is in a VPLMN access state, and the service connection state is monitored to enter an idle state, the HPLMN is actively searched, so that the terminal can quickly return to the HPLMN.
Drawings
Fig. 1 is a flowchart illustrating a roaming return method according to an embodiment of the present invention;
FIG. 2 is a schematic flowchart of step S110 in FIG. 1;
fig. 3 is a schematic structural diagram of a roaming returning device according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
When a terminal roams to an operator Network of a deployed Network, in order to ensure that the terminal can fast return to a Home operator Network, the embodiment of the invention provides a roaming return method.
Specifically, the roaming return method according to an embodiment of the present invention is applied to a terminal, and as shown in fig. 1, the method includes:
s110, under the state that the terminal accesses the public land mobile network VPLMN of the visit place, after the service connection state enters the idle state, the search of the public land mobile network HPLMN of the home place is carried out.
In the roaming return method in the embodiment of the invention, after the terminal enters the idle state from the service connection state in the state of accessing the VPLMN, the search of the HPLMN can be actively performed under the condition of no network side indication, so as to quickly return to the HPLMN.
Optionally, in step S110, after entering the idle state from the service connection state, the search of the home public land mobile network HPLMN is performed, including:
when the business connection state enters an idle state, the HPLMN is immediately searched; and/or
And after the service connection state enters an idle state, the timing time of the timer started when the VPLMN is accessed is overtime, and the HPLMN is searched.
In another embodiment, by using the roaming return method in the embodiment of the present invention, when it is monitored that the timing time of the timer started when the service connection state enters the idle state and the terminal accesses the VPLMN is overtime and any condition that the terminal is in the idle state is satisfied in the state where the terminal accesses the VPLMN, the HPLMN is actively searched, so that the terminal can quickly return to the HPLMN.
In one embodiment, if the terminal accesses a non-HPLMN network due to roaming or the like, that is, the terminal accesses the VPLMN, service transmission is performed, and after the service is ended and the service connection state is restored to the idle state, the terminal autonomously searches the signal intensity of the HPLMN and selects to access the HPLMN network through the cell.
Specifically, in a state that a terminal is accessed to a VPLMN, if a Radio Resource Control (RRC) release message is received and the RRC release message does not carry redirection frequency point information, it is determined that the terminal enters an idle state from a service connection state.
That is, when the Access Stratum (AS) changes from the service connection state to the idle state, and the Non-Access Stratum (NAS) notifies the AS layer that the network where the terminal currently resides is the Non-HPLMN network, the terminal is triggered to actively perform the search based on the HPLMN.
Optionally, in this embodiment of the present invention, in step S110, when the terminal performs the search of the home public land mobile network HPLMN, the network search and the cell selection are performed in sequence according to the order from the high priority to the low priority of the multiple frequency points of the HPLMN.
Specifically, as shown in fig. 2, in step S110, the performing the search of the HPLMN includes:
s111, sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
s112, sequentially carrying out downlink synchronization on the plurality of frequency points according to the sequence of the signal intensity measured by the plurality of frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and S113, when the target frequency point is judged to meet the cell access condition, performing cell selection.
Optionally, the method further comprises:
and determining the priority arrangement order of the plurality of frequency points of the HPLMN according to a pre-stored frequency point set comprising the plurality of frequency points, wherein the priority arrangement order of the plurality of frequency points is pre-stored in the frequency point set.
By adopting the embodiment, the terminal can pre-store the frequency point set of the HPLMN and pre-store the priority ranking order of the frequency points in the frequency point set. And sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN from high to low by utilizing the pre-stored priority arrangement sequence of the plurality of frequency points.
Optionally, the method further comprises:
before entering the VPLMN, when the HPLMN is connected, updating the priority ranking order according to the priority of the frequency point in the system message or RRC signaling sent by the network.
Through the process, the priority of the frequency point of the HPLMN can be updated in real time, so that the terminal can adapt to the latest state of the network when the terminal is back to the HPLMN.
In the roaming return method according to the embodiment of the present invention, optionally, the method further includes:
determining the frequency point with the highest priority in the plurality of frequency points according to one of the following modes:
determining the frequency point located in the HPLMN before entering the VPLMN as the highest priority frequency point;
determining the frequency point with the highest priority in the system message read in the HPLMN before entering the VPLMN as the frequency point with the highest priority;
and determining that the frequency point with the highest priority in the frequency points acquired by RRC signaling in the HPLMN before entering the VPLMN is the frequency point with the highest priority.
Specifically, on the basis of determining the sequence of the frequency points of the HPLMN from high to low by pre-storing the priority ranking sequence of the frequency points in the frequency point set, the highest priority frequency point can be determined by at least one of the above manners, and when the HPLMN is searched, the highest priority frequency point is preferentially searched.
On the basis of determining the priority order of the frequency points of the HPLMN in the above manner, in step S111, the terminal measures the Signal Strength of the corresponding frequency point from high priority to low priority, optionally, the measured Signal Strength includes at least one of but not limited to RSSI (Received Signal Strength Indication), RSRP (Reference Signal Receiving Power) and SINR (Signal to Interference plus Noise Ratio).
Optionally, after the terminal measures the signal strengths of multiple frequency points one by one, the obtained signal strengths are sorted from strong to weak.
In the embodiment of the present invention, optionally, networks corresponding to the multiple frequency points of the HPLMN and the VPLMN belong to the same generation communication network, or networks corresponding to the multiple frequency points of the HPLMN belong to a low generation communication network of the VPLMN.
For example, when the VPLMN is a 5G system, the mobile communication network corresponding to the HPLMN frequency point searched by the terminal may be the 5G system, or any one of a 4G system, a 3G system, and a 2G system.
Optionally, the priority ranking order of the multiple frequency points pre-stored by the terminal includes a residence priority of the mobile communication network corresponding to each frequency band.
In the roaming returning method according to the embodiment of the present invention, in step S112, the terminal measures the signal strengths of the multiple frequency points one by one, and performs downlink synchronization on the multiple frequency points in sequence after ordering the obtained signal strengths from strong to weak until a target frequency point with successful downlink synchronization is obtained.
Specifically, the frequency point with the strongest signal strength is selected for downlink synchronization, if the downlink synchronization fails, the frequency point with the second strongest signal strength is selected for downlink synchronization, and by analogy, each frequency point in the multiple frequency points is sequentially subjected to downlink synchronization until a target frequency point with successful downlink synchronization is obtained.
After the target frequency point is determined, the method further comprises the following steps:
receiving a cell broadcast message at the target frequency point;
and judging that the PLMN of the cell corresponding to the target frequency point accords with the HPLMN according to the cell broadcast message, and judging that the target frequency point meets the cell access condition when the signal intensity of the target frequency point meets a preset cell residence threshold.
And then, when the target frequency point is judged to meet the cell access condition, cell selection is carried out.
The cell broadcast message received at the target frequency point may include, but is not limited to, only one of a Master Information Block (MIB) and a System Information Block (System Information Block1, SIB 1).
Further, after completing the cell selection, the terminal continues to receive other Remaining Minimum System Information (RMSI) broadcasted by the cell.
Optionally, in the roaming return method according to the embodiment of the present invention, the method further includes:
and if the plurality of frequency points are sequentially subjected to downlink synchronization according to the sequence of the signal intensity measured by the plurality of frequency points from high to low, and each frequency point cannot be successfully subjected to downlink synchronization, executing full-band scanning.
Specifically, if each frequency point in the frequency point set of the pre-stored HPLMN is searched, a target frequency point with successful downlink synchronization cannot be searched, and then full-band frequency sweeping is performed.
In another implementation of the roaming return method according to the embodiment of the present invention, in a state where the terminal is accessed to the VPLMN, if a timing time of the timer started when the terminal is accessed to the VPLMN is overtime and the terminal is in an idle state, the HPLMN search is performed.
In the embodiment, the terminal takes the time point of accessing the VPLMN as the starting time of the back search HPLMN timer.
The timing time of the timer comprises a first timing time which is a preset time away from the access time of the VPLMN (a time point of accessing the VPLMN) and a plurality of second timing times which are arranged at intervals of a time period T after the first timing time.
Specifically, a time point of accessing the VPLMN is used as a mark for starting timing of a timer, the timer for searching back the HPLMN is started, after the timer is started, the HPLMN is searched for the first time at a first timing time after a preset time duration, and after the first search is performed, the HPLMN is searched for once at intervals of time periods T and every interval of one time period T as the first timing time.
Alternatively, the preset duration of the first timing time is usually several minutes, and the time period T of the plurality of second timing times is several hours, such as 8 hours.
By adopting the embodiment, after the HPLMN overflows to the VPLMN, if the service duration of the VPLMN is less than or equal to the first timing time, the HPLMN is searched when the time point of the first timing time is in an idle state; and if the service duration of the VPLMN is longer than the first timing time, after the first timing time, every time point corresponding to a second timing time of a time period T, and when the terminal is in an idle state, the HPLMN is searched.
With this embodiment, when it is monitored that the timing time of the timer started when accessing the VPLMN is overtime and the terminal is in an idle state, the HPLMN search is performed, which is the same as the previous embodiment, as shown in fig. 2, including:
s111, sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
s112, sequentially carrying out downlink synchronization on the plurality of frequency points according to the sequence of the signal intensity measured by the plurality of frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and S113, when the target frequency point is judged to meet the cell access condition, performing cell selection.
Specifically, the above procedure and manner for performing the HPLMN search may refer to a manner of starting the HPLMN search when the service connection state enters the idle state, and will not be described in detail here.
By adopting the roaming return method provided by the embodiment of the invention, the service connection state enters the idle state, the HPLMN searching mode is started, when the non-HPLMN network finishes the service, the terminal can autonomously search the cell of the HPLMN frequency point according to the priority of the HPLMN frequency point and complete the return of cell selection, and the purpose that the terminal can autonomously return to the home operator network to realize the roaming return after entering the idle state after the terminal roams out to the non-HPLMN to develop the service is realized; on the other hand, the method also supports the return of the timer overtime searching HPLMN which enters the VPLMN for timing, and compared with the existing 8-hour HPLMN searching and returning scheme based on the terminal or USIM card timer in the starting state, the method can effectively realize the returning of the terminal in the level of minutes.
Another embodiment of the present invention further provides a roaming returning apparatus, which is applied to a terminal, and as shown in fig. 3, the apparatus includes:
the searching module 310 is configured to search the home public land mobile network HPLMN after the service connection state enters an idle state in a state where the terminal accesses the visited public land mobile network VPLMN.
Optionally, in the roaming returning apparatus, after entering the idle state from the service connection state, the searching module 310 performs a search of a home public land mobile network HPLMN, including:
when the business connection state enters an idle state, the HPLMN is immediately searched; and/or
And after the service connection state enters an idle state, the timing time of the timer started when the VPLMN is accessed is overtime, and the HPLMN is searched.
Optionally, in the roaming return apparatus, the searching module 310 is configured to search for the HPLMN, and is specifically configured to:
sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
sequentially carrying out downlink synchronization on the multiple frequency points according to the sequence of the signal intensity measured by the multiple frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and when the target frequency point is judged to meet the cell access condition, cell selection is carried out.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
receiving a cell broadcast message at the target frequency point;
and judging that the PLMN of the cell corresponding to the target frequency point accords with the HPLMN according to the cell broadcast message, and judging that the target frequency point meets the cell access condition when the signal intensity of the target frequency point meets a preset cell residence threshold.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
and determining the priority arrangement order of the plurality of frequency points of the HPLMN according to a pre-stored frequency point set comprising the plurality of frequency points, wherein the priority arrangement order of the plurality of frequency points is pre-stored in the frequency point set.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
determining the frequency point with the highest priority in the plurality of frequency points according to one of the following modes:
determining the frequency point located in the HPLMN before entering the VPLMN as the highest priority frequency point;
determining the frequency point with the highest priority in the system message read in the HPLMN before entering the VPLMN as the frequency point with the highest priority;
and determining that the frequency point with the highest priority in the frequency points acquired by a Radio Resource Control (RRC) signaling in the HPLMN before entering the VPLMN is the frequency point with the highest priority.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
before entering the VPLMN, when the HPLMN is connected, updating the priority ranking order according to the priority of the frequency point in the system message or RRC signaling sent by the network.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
and if the plurality of frequency points are sequentially subjected to downlink synchronization according to the sequence of the signal intensity measured by the plurality of frequency points from high to low, and each frequency point cannot be successfully subjected to downlink synchronization, executing full-band scanning.
Optionally, the roaming returning apparatus, wherein the searching module 310 is further configured to:
in the state that the terminal is accessed to the VPLMN, if an RRC release message is received and the RRC release message does not carry redirection frequency point information, the terminal is determined to enter an idle state from a service connection state.
Optionally, in the roaming return apparatus, the networks corresponding to the multiple frequency points of the HPLMN and the VPLMN belong to the same generation of communication network, or the networks corresponding to the multiple frequency points of the HPLMN belong to a lower generation of communication network of the VPLMN.
Optionally, the roaming returning apparatus, wherein the timing time of the timer includes a first timing time that is a preset time from the access time of the VPLMN and a plurality of second timing times that are spaced by a time period T after the first timing time.
An embodiment of the present invention further provides a terminal, as shown in fig. 4, where the terminal includes: a processor 401; and a memory 403 connected to the processor 401 through a bus interface 402, the memory 403 being used for storing programs and data used by the processor 401 in performing operations, and a transceiver 404 connected to the bus interface 402 for receiving and transmitting data under the control of the processor 401. Wherein the content of the first and second substances,
when the processor 401 calls and executes the programs and data stored in the memory 403, the following processes are performed:
and under the state that the terminal is accessed to the public land mobile network VPLMN of the visited place, after the service connection state enters an idle state, searching the public land mobile network HPLMN of the home place.
Optionally, in the terminal, after entering the idle state from the service connection state, the processor 401 performs a search for a home public land mobile network HPLMN, including:
when the business connection state enters an idle state, the HPLMN is immediately searched; and/or
And after the service connection state enters an idle state, the timing time of the timer started when the VPLMN is accessed is overtime, and the HPLMN is searched.
Optionally, in the terminal, the processor 401 performs a search for the HPLMN, including:
sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
sequentially carrying out downlink synchronization on the multiple frequency points according to the sequence of the signal intensity measured by the multiple frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and when the target frequency point is judged to meet the cell access condition, cell selection is carried out.
Optionally, the terminal, wherein the processor 401 is further configured to:
receiving a cell broadcast message at the target frequency point;
and judging that the PLMN of the cell corresponding to the target frequency point accords with the HPLMN according to the cell broadcast message, and judging that the target frequency point meets the cell access condition when the signal intensity of the target frequency point meets a preset cell residence threshold.
Optionally, the terminal, wherein the processor 401 is further configured to:
and determining the priority arrangement order of the plurality of frequency points of the HPLMN according to a pre-stored frequency point set comprising the plurality of frequency points, wherein the priority arrangement order of the plurality of frequency points is pre-stored in the frequency point set.
Optionally, the terminal, wherein the processor 401 is further configured to:
determining the frequency point with the highest priority in the plurality of frequency points according to one of the following modes:
determining the frequency point located in the HPLMN before entering the VPLMN as the highest priority frequency point;
determining the frequency point with the highest priority in the system message read in the HPLMN before entering the VPLMN as the frequency point with the highest priority;
and determining that the frequency point with the highest priority in the frequency points acquired by a Radio Resource Control (RRC) signaling in the HPLMN before entering the VPLMN is the frequency point with the highest priority.
Optionally, the terminal, wherein the processor 401 is further configured to:
before entering the VPLMN, when the HPLMN is connected, updating the priority ranking order according to the priority of the frequency point in the system message or RRC signaling sent by the network.
Optionally, the terminal, wherein the processor 401 is further configured to:
and if the plurality of frequency points are sequentially subjected to downlink synchronization according to the sequence of the signal intensity measured by the plurality of frequency points from high to low, and each frequency point cannot be successfully subjected to downlink synchronization, executing full-band scanning.
Optionally, the terminal, wherein the processor 401 is further configured to:
in the state that the terminal is accessed to the VPLMN, if an RRC release message is received and the RRC release message does not carry redirection frequency point information, the terminal is determined to enter an idle state from a service connection state.
Optionally, in the terminal, the networks corresponding to the multiple frequency points of the HPLMN and the VPLMN belong to the same generation of communication network, or the networks corresponding to the multiple frequency points of the HPLMN belong to a lower generation of communication network of the VPLMN.
Optionally, the terminal, wherein the timing time of the timer includes a first timing time that is a preset time from the access time of the VPLMN and a plurality of second timing times that are spaced at a time period T after the first timing time.
It should be noted that in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 401 and various circuits of memory represented by memory 403 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 404 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 405 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 401 is responsible for managing the bus architecture and general processing, and the memory 403 may store data used by the processor 401 in performing operations.
Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program includes instructions for executing part or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
In addition, the embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the roaming return method described in any one of the above.
Specifically, the readable storage medium is applied to the above-mentioned identification device, and when the readable storage medium is applied to the identification device, the execution steps in the corresponding roaming return method are described in detail above, and are not described again here.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (14)
1. A roaming returning method is applied to a terminal, and is characterized in that the method comprises the following steps:
and under the state that the terminal is accessed to the public land mobile network VPLMN of the visited place, after the service connection state enters an idle state, searching the public land mobile network HPLMN of the home place.
2. The method of claim 1, wherein the searching for the home public land mobile network HPLMN after entering the idle state from the service-connected state comprises:
when the business connection state enters an idle state, the HPLMN is immediately searched; and/or
And after the service connection state enters an idle state, the timing time of the timer started when the VPLMN is accessed is overtime, and the HPLMN is searched.
3. The method of claim 1 or 2, wherein the performing the search for the HPLMN comprises:
sequentially measuring the signal intensity of a plurality of frequency points of the HPLMN according to the sequence of the priority from high to low;
sequentially carrying out downlink synchronization on the multiple frequency points according to the sequence of the signal intensity measured by the multiple frequency points from high to low until a target frequency point with successful downlink synchronization is obtained;
and when the target frequency point is judged to meet the cell access condition, cell selection is carried out.
4. The roaming return method of claim 3, wherein the method further comprises:
receiving a cell broadcast message at the target frequency point;
and judging that the PLMN of the cell corresponding to the target frequency point accords with the HPLMN according to the cell broadcast message, and judging that the target frequency point meets the cell access condition when the signal intensity of the target frequency point meets a preset cell residence threshold.
5. The roaming return method of claim 3, wherein the method further comprises:
and determining the priority arrangement order of the plurality of frequency points of the HPLMN according to a pre-stored frequency point set comprising the plurality of frequency points, wherein the priority arrangement order of the plurality of frequency points is pre-stored in the frequency point set.
6. The method of claim 5, further comprising:
determining the frequency point with the highest priority in the plurality of frequency points according to one of the following modes:
determining the frequency point accessed in the HPLMN before accessing the VPLMN as the highest priority frequency point;
determining the frequency point with the highest priority in the system message read in the HPLMN before accessing the VPLMN as the frequency point with the highest priority;
and before the VPLMN is accessed, determining the frequency point with the highest priority obtained by Radio Resource Control (RRC) signaling in the HPLMN as the frequency point with the highest priority.
7. The method of claim 5, further comprising:
before accessing the VPLMN, when the HPLMN is connected, updating the priority ranking order according to the priority of the frequency point in the system message or RRC signaling sent by the network.
8. The roaming return method of claim 3, wherein the method further comprises:
and if the plurality of frequency points are sequentially subjected to downlink synchronization according to the sequence of the signal intensity measured by the plurality of frequency points from high to low, and each frequency point cannot be successfully subjected to downlink synchronization, executing full-band scanning.
9. The method of claim 1, further comprising:
in the state that the terminal is accessed to the VPLMN, if an RRC release message is received and the RRC release message does not carry redirection frequency point information, the terminal is determined to enter an idle state from a service connection state.
10. The roaming return method of claim 3, wherein networks corresponding to the multiple frequency points of the HPLMN belong to a same generation communication network as the VPLMN, or networks corresponding to the multiple frequency points of the HPLMN belong to a lower generation communication network of the VPLMN.
11. The roaming return method of claim 2, wherein the timing time of the timer comprises a first timing time that is a preset length of time away from the access time of the VPLMN and a plurality of second timing times that are spaced apart by a time period T after the first timing time.
12. A roaming return apparatus applied to a terminal, the apparatus comprising:
and the searching module is used for searching the home public land mobile network HPLMN after the service connection state enters an idle state under the state that the terminal accesses the visited public land mobile network VPLMN.
13. A terminal, comprising: a processor, a memory, and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing a roaming return method as recited in any one of claims 1 to 11.
14. A readable storage medium, characterized in that the readable storage medium has stored thereon a program which, when executed by a processor, implements the steps in the return-to-roaming method according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812507.2A CN114079905A (en) | 2020-08-13 | 2020-08-13 | Roaming returning method, device and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812507.2A CN114079905A (en) | 2020-08-13 | 2020-08-13 | Roaming returning method, device and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114079905A true CN114079905A (en) | 2022-02-22 |
Family
ID=80280673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010812507.2A Pending CN114079905A (en) | 2020-08-13 | 2020-08-13 | Roaming returning method, device and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114079905A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114827979A (en) * | 2022-05-26 | 2022-07-29 | 中国联合网络通信集团有限公司 | Method and equipment for processing different network roaming |
| CN115134892A (en) * | 2022-08-30 | 2022-09-30 | 荣耀终端有限公司 | Access method and device based on heterogeneous network roaming |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050215259A1 (en) * | 2004-03-26 | 2005-09-29 | Cheng Steven D | Method for receiving free wireless public broadcast services with a mobile station |
| CN105611603A (en) * | 2014-11-20 | 2016-05-25 | 华为终端（东莞）有限公司 | Cell selection method and cell selection device |
| WO2017219213A1 (en) * | 2016-06-20 | 2017-12-28 | 华为技术有限公司 | Hplmn reselection method and terminal device |
| CN111065136A (en) * | 2019-12-13 | 2020-04-24 | RealMe重庆移动通信有限公司 | Cell selection method, terminal device and storage medium |
-
2020
- 2020-08-13 CN CN202010812507.2A patent/CN114079905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050215259A1 (en) * | 2004-03-26 | 2005-09-29 | Cheng Steven D | Method for receiving free wireless public broadcast services with a mobile station |
| CN105611603A (en) * | 2014-11-20 | 2016-05-25 | 华为终端（东莞）有限公司 | Cell selection method and cell selection device |
| WO2017219213A1 (en) * | 2016-06-20 | 2017-12-28 | 华为技术有限公司 | Hplmn reselection method and terminal device |
| CN111065136A (en) * | 2019-12-13 | 2020-04-24 | RealMe重庆移动通信有限公司 | Cell selection method, terminal device and storage medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114827979A (en) * | 2022-05-26 | 2022-07-29 | 中国联合网络通信集团有限公司 | Method and equipment for processing different network roaming |
| CN114827979B (en) * | 2022-05-26 | 2024-02-13 | 中国联合网络通信集团有限公司 | Different network roaming processing method and device |
| CN115134892A (en) * | 2022-08-30 | 2022-09-30 | 荣耀终端有限公司 | Access method and device based on heterogeneous network roaming |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10117163B2 (en) | Network access method and mobile communication terminal | |
| RU2372752C2 (en) | Improvement of intersystem rechoice of cell from geran network to utran network | |
| CN110401943B (en) | Mobile terminal network-residing method, device, server and storage medium | |
| CN111698763B (en) | Terminal residing network control method, MME (mobility management entity) equipment, AMF (advanced metering framework) equipment and network | |
| KR100999913B1 (en) | Cell reselection for improving network interconnection | |
| US9992697B2 (en) | Method and apparatus for reporting of measurement data | |
| CN109327883B (en) | Method and device for transmitting information | |
| RU2599382C1 (en) | Method and apparatus for producing neighboring cell information | |
| CN105959954A (en) | Pseudo base station identification method, pseudo base station identification device, and terminal | |
| CN110602765B (en) | Network selection method and device | |
| CN103067987A (en) | User equipment location area updating method and device | |
| CN107277845A (en) | Open determination method, the apparatus and system of cell measurement | |
| CN114079905A (en) | Roaming returning method, device and terminal | |
| CN109155962B (en) | HPLMN reselection method and terminal equipment | |
| CN112367625A (en) | Virtual card network-residing method and system, server, mobile terminal and storage medium | |
| CN111107535A (en) | Home network reselection method and related device | |
| CN111083641A (en) | Electronic fence generation method and device | |
| CN113055980B (en) | Network selection method, device, terminal and storage medium | |
| CN112566012B (en) | Terminal feature acquisition method and device, server and storage medium | |
| KR101852895B1 (en) | Data processing method of user equipment, device | |
| RU2590907C1 (en) | Method and device for obtaining information of neighbouring cells | |
| CN109005568B (en) | Forbidden list processing method and device, storage medium, terminal and base station | |
| CN114710822A (en) | Wireless access processing method, information transmission method and equipment | |
| EP4268486A1 (en) | Cellular communication device, security module and electronic data structure for plmn | |
| CN113891371A (en) | Frequency point measuring method and related product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |