CN105282804B - A kind of cut-in method of roaming network, apparatus and system - Google Patents
A kind of cut-in method of roaming network, apparatus and system Download PDFInfo
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- CN105282804B CN105282804B CN201410281811.3A CN201410281811A CN105282804B CN 105282804 B CN105282804 B CN 105282804B CN 201410281811 A CN201410281811 A CN 201410281811A CN 105282804 B CN105282804 B CN 105282804B
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Abstract
The embodiment of the present invention discloses a kind of cut-in method of roaming network, and the method is used for network side, comprising: receives the attach request that terminal is sent；Roaming network, which is generated, according to the attach request accesses message；The roaming network, which is sent, to the terminal accesses message；A kind of cut-in method of roaming network is also disclosed in the embodiment of the present invention, and the method is used for terminal side, comprising: sends attach request to network side；It receives the roaming network that network side is sent and accesses message；When determining that the roaming network access message is legal, message is accessed according to the roaming network, roaming network is updated；The embodiment of the present invention also discloses the access device and system of roaming network simultaneously.
Description
Technical field
The present invention relates in terminal and core net field roaming network access technology more particularly to a kind of roaming network
Cut-in method, apparatus and system.
Background technique
Currently, terminal is when updating roaming network, generally according to standard scheme as defined in 3GPP, based on being recorded in data card
Operator control public land mobile network (OPLMN, Operator Controlled Public Land Mobile
Network) list carries out the update of roaming network.But in the actual process, often due to the OPLMN information that is recorded in data card
It can not timely update, this causes user that can not carry out network selection according to operator's signing information of new roaming place.
In response to the above problems, the prior art is mainly by the prefabricated file in terminal side, and customized according to the prefabricated file
Content carries out network selection, and still, which lacks the mechanism that timely updates, and the network selection mode of prefabricated file customization is non-standard
Change, therefore, this method usually requires terminal and makes non-standard modification.
Currently, existing producer proposes the system identification list for prestoring roaming service network of having contracted in the terminal, work as end
The corresponding system identification of the pilot signal is read after roaming place captures the pilot signal of the network in end.But this method
It also needs to prestore the corresponding roaming carrier of system identification list in terminal side, but in the actual process, terminal side is often
Can not timely update the corresponding roaming carrier of system identification list.
At the same time, Ye You producer propose the roaming network selection strategy based on signalling system No.7 in 3GPP, this method real-time compared with
It is good, but the above-mentioned roaming network selection strategy based on signalling system No.7, need to carry out Interoperability Testing between different operators and terminal,
Implementation cost is larger.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of cut-in method of roaming network, apparatus and system, Neng Gouyou
Effect ground solves the problems, such as how user quickly accesses roaming network.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides a kind of cut-in method of roaming network, and the method is used for network side, comprising: receives eventually
Hold the attach request sent；Roaming network, which is generated, according to the attach request accesses message；The roaming is sent to the terminal
Network insertion message.
Preferably, the attach request carries public land mobile network (PLMN, Public Land Mobile
Network) number, it is described after receiving the attach request that terminal is sent, the method also includes: according to the attach request
In PLMN number, judge whether the terminal is in roaming state, if the terminal is in roaming state, according to
Attach request generates roaming network and accesses message.
Preferably, roaming network access message includes following one or more: OPLMN list, update duration parameters,
Digital signature.
Preferably, the generation OPLMN list, comprising: according to the control field of the attach request, determine the terminal
Access category with voice be it is main when, according to the quality of speech network service, generate the OPLMN list of speech network；Determine institute
State the access category of terminal with data be it is main when, according to the quality of data network service, generate the OPLMN list of data network.
Preferably, the generation updates duration parameters, comprising: according to current time and network data base latest update time
Difference, generate update duration parameters.
Preferably, the generation digital signature, comprising: according to the control field of the OPLMN list, described in generation
The digital signature of OPLMN list.
The embodiment of the present invention also provides a kind of cut-in method of roaming network, and the method is used for terminal side, comprising: to net
Network side sends attach request；It receives the roaming network that network side is sent and accesses message；Determine that the roaming network access message is closed
When method, message is accessed according to the roaming network, roaming network is updated.
Preferably, roaming network access message includes following one or more: OPLMN list, update duration parameters,
Digital signature.
Preferably, this method further include: judge whether roaming network access message is legal, specifically: described in terminal retrieval
Roaming network accesses the control field of message, when determining in roaming network access message containing OPLMN keyword, from described
Digital signature is parsed in roaming network access message；Whether the roaming network access message is judged according to the digital signature
It is legal.
Preferably, described that message is accessed according to roaming network, roaming network is updated, comprising: terminal will be overflow recently
The PLMN number on trip ground is matched with the PLMN number on current roaming ground, if it is inconsistent, being connect according to the roaming network
Enter the OPLMN list in message, roaming network is updated.
Preferably, the method also includes: if recently roaming place PLMN number and current roaming ground PLMN number
Unanimously, then whether the network renewal time for judging current roaming ground is more than update duration ginseng in roaming network access message
Number is in voice service in the terminal if the network renewal time on current roaming ground is more than the update duration parameters
When idle state, roaming network is updated；If the network renewal time on current roaming ground is less than the update duration
Parameter is not updated roaming network then.
Preferably, after being updated to roaming network, the method also includes: it selects high in the OPLMN list
The network of priority accesses roaming network；Record the updated PLMN number of this roaming network and time.
The embodiment of the present invention also provides a kind of cut-in method of roaming network, which comprises is used for net according to above-mentioned
The cut-in method of the roaming network of network side carries out the access of roaming network；According to the access of the above-mentioned roaming network for terminal side
The access of method progress roaming network.
The embodiment of the present invention also provides a kind of access device of roaming network, and described device is set to network side, comprising: the
One receiving unit, generation unit and the first transmission unit；Wherein, first receiving unit, for receiving terminal transmission
Attach request；The generation unit accesses message for generating roaming network according to the attach request；Described first sends list
Member accesses message for sending the roaming network to the terminal.
Preferably, the attach request carries PLMN number, and the generation unit is specifically used for according to the attach request
In PLMN number, judge whether the terminal is in roaming state, if the terminal is in roaming state, according to
Attach request generates roaming network and accesses message.
Preferably, it includes following one that first transmission unit, which sends the roaming network access message to the terminal,
Or multinomial: OPLMN list updates duration parameters, digital signature.
Preferably, the generation unit determines the terminal specifically for the control field according to the attach request
Access category with voice be it is main when, according to the quality of speech network service, generate the OPLMN list of speech network；Described in determination
The access category of terminal with data be it is main when, according to the quality of data network service, generate the OPLMN list of data network.
Preferably, the generation unit, specifically for the difference according to current time and network data base latest update time
Value, generates the update duration parameters.
Preferably, the generation unit generates the OPLMN specifically for the control field according to the OPLMN list
The digital signature of list.
The embodiment of the present invention also provides a kind of access device of roaming network, and described device is set to terminal side, comprising: the
Two transmission units, the second receiving unit and updating unit；Wherein, second transmission unit, it is attached for being sent to network side
Request；Second receiving unit, the roaming network for receiving network side transmission access message；The updating unit is used
When determining that the roaming network access message is legal, message is accessed according to the roaming network, roaming network is updated.
Preferably, the received roaming network access message of second receiving unit includes following one or more: OPLMN
List updates duration parameters, digital signature.
Preferably, the updating unit determines institute specifically for retrieving the control field of the roaming network access message
When stating in roaming network access message containing OPLMN keyword, digital signature is parsed from roaming network access message；
According to the digital signature, judge whether the roaming network access message is legal.
Preferably, the updating unit, specifically for by the PLMN of the PLMN number of nearest roaming place and current roaming ground
Number is matched, if it is inconsistent, according to the roaming network access message in OPLMN list, to roaming network into
Row updates.
Preferably, the updating unit is also used in the PLMN number of nearest roaming place and No. PLMN of current roaming ground
When code is consistent, judge whether the network renewal time on current roaming ground is more than update duration in roaming network access message
Parameter is in voice service in the terminal if the network renewal time on current roaming ground is more than the update duration parameters
When idle state, roaming network is updated；If the network renewal time on current roaming ground is less than the update duration
Parameter is not updated roaming network then.
Preferably, described device further include: access unit and recording unit；Wherein, the access unit, for selecting
The network for selecting high priority in the OPLMN list accesses roaming network；The recording unit, it is unrestrained for recording this
Swim the updated PLMN number of network and time.
The embodiment of the present invention also provides a kind of access system of roaming network, the system comprises: network side roaming network
Access device and terminal side roaming network access device；Wherein, the network side roaming network access device, for receiving
The attach request that terminal is sent generates roaming network according to the attach request and accesses message, and Xiang Suoshu terminal sends described unrestrained
Swim network insertion message；The terminal side roaming network access device receives network side for sending attach request to network side
The roaming network of transmission accesses message, when determining that the roaming network access message is legal, is disappeared according to roaming network access
Breath, is updated roaming network.
Preferably, the network side roaming network access device is the above-mentioned roaming network access dress for being set to network side
It sets；The terminal side roaming network access device is the access device of the above-mentioned roaming network for being set to terminal side.
Cut-in method, the apparatus and system of roaming network provided in an embodiment of the present invention, network side receive what terminal was sent
Attach request；Roaming network, which is generated, according to the attach request accesses message；The roaming network access is sent to the terminal
Message；Terminal sends attach request to network side, receives the roaming network that network side is sent and accesses message；Determine the roaming network
When network access message is legal, message is accessed according to the roaming network, roaming network is updated；In this way, terminal is in determination
When roaming network access message is legal, message can be accessed according to the roaming network, roaming network is updated, and
The roaming network of selection high priority is accessed, in this way can be in real time by the network information transfer of roaming place to terminal, effectively
Ground solves current data in terminal card record roaming network information delay and terminal does not stop to attempt asking for access roaming network
Topic；
In addition, roaming network access message is sent in real time due to the attach request that network side can be sent according to terminal
To terminal, therefore, this enables demand of the network side according to terminal to quality of service, provides suitable roaming network for terminal
Network；And it includes digital signature that the roaming network, which accesses in message, this can prevent from artificially sending spurious information to terminal,
The reliability of access roaming network when improving terminal roaming in turn.
Detailed description of the invention
Fig. 1 is the implementation process schematic diagram of the cut-in method embodiment one of roaming network of the embodiment of the present invention；
Fig. 2 is the implementation process schematic diagram of the cut-in method example one of roaming network of the embodiment of the present invention；
Fig. 3 is the implementation process schematic diagram of the cut-in method embodiment two of roaming network of the embodiment of the present invention；
Fig. 4 is the implementation process schematic diagram of the cut-in method example two of roaming network of the embodiment of the present invention；
Fig. 5 is the implementation process schematic diagram of the cut-in method embodiment three of roaming network of the embodiment of the present invention；
Fig. 6 is the composed structure schematic diagram of the access device embodiment one of roaming network of the embodiment of the present invention；
Fig. 7 is the composed structure schematic diagram one of the access device embodiment two of roaming network of the embodiment of the present invention；
Fig. 8 is the composed structure schematic diagram two of the access device embodiment two of roaming network of the embodiment of the present invention；
Fig. 9 is the composed structure schematic diagram three of the access device embodiment two of roaming network of the embodiment of the present invention；
Figure 10 is the composed structure schematic diagram of the access system embodiment of roaming network of the embodiment of the present invention；
Figure 11 is the configuration diagram of the access system embodiment of roaming network of the embodiment of the present invention.
Specific embodiment
In the embodiment of the present invention, network side receives the attach request that terminal is sent；It is generated and is roamed according to the attach request
Network insertion message；The roaming network, which is sent, to the terminal accesses message；Terminal sends attach request to network side, receives
The roaming network that network side is sent accesses message；When determining that the roaming network access message is legal, according to the roaming network
Message is accessed, roaming network is updated.
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the present invention provides a kind of cut-in method of roaming network, and Fig. 1 is connecing for roaming network of the embodiment of the present invention
Enter the implementation process schematic diagram of embodiment of the method one, as shown in Figure 1, the method is used for network side, comprising the following steps:
Step S101: the attach request that terminal is sent is received；
In this step, the network side receives the attach request that terminal is sent, and the attach request carries PLMN number；
Optionally, network side judges whether the terminal is in roaming state according to the PLMN number in the attach request, if institute
It states terminal and is in roaming state, then network side generates roaming network according to the attach request and accesses message；If the terminal
It is not in roaming state, then terminates process.
Step S102: roaming network is generated according to the attach request and accesses message；
Optionally, the roaming network access message can include but is not limited to following one or more: OPLMN list,
Update duration parameters, digital signature；Therefore, the process for generating roaming network access message namely generates the OPLMN
List, the process for updating duration parameters and digital signature.
Optionally, it is contemplated that the difference of overseas networks and domestic network, when the roaming place of terminal is overseas, network side can
Control field with the attach request sent according to terminal, and with the combining terminal roaming operator of the country in which it is located and terminal attaching
The signing situation of ground operator, judges the access category of the terminal；Here, the access category of the terminal, it can be understood as
The type of accessing terminal to network；Currently, data services and voice service are substantially while carrying out for domestic network
, it may be assumed that the access category of terminal is mostly based on data and voice；And for overseas network, data services and voice class
Business is then separated, it may be assumed that the access category of terminal can be based on data, can also be based on voice, specifically can basis
The demand of user is configured.
Therefore, when terminal is in overseas roaming state, network side determines institute according to the control field of the attach request
State the access category of terminal with voice be it is main when, network side can generate linguistic network according to the quality of speech network service
OPLMN list；Determine the access category of the terminal with data be it is main when, can according to the quality of data network service, generate
The OPLMN list of data network.
Optionally, in practical applications, since network side can carry out more database according to signing situation of operator etc.
Newly, therefore, network side needs the difference of the latest update time of the current time and network data base according to terminal current roaming ground
Value, generates and updates duration parameters, and the update duration parameters can be indicated with T0.
Optionally, network side passes through encryption according to the control field of the OPLMN list of the speech network or data network
The mode of operation, generates the digital signature of the OPLMN list, in this way, the safety of the OPLMN list of generation can be improved.
S103: Xiang Suoshu terminal of step sends the roaming network and accesses message；
In this step, the OPLMN list, update duration parameters and digital signature are packaged into unrestrained by the network side
Trip network insertion message is sent to terminal.
Below for the cut-in method of the roaming network described in Fig. 1, by example in detail below to the present invention at least one
The cut-in method for the roaming network that a embodiment provides describes in detail.
Example one
Fig. 2 is the implementation process schematic diagram of the cut-in method example one of roaming network of the embodiment of the present invention, as shown in Fig. 2,
The method is used for network side, comprising the following steps:
Step 201: receiving the attach request that terminal is sent；
In this step, terminal can actively initiate the attach request of access roaming network when entering roaming place to network side.
Step 202: according to the PLMN number in the attach request, judge whether the terminal is in roaming state, if
It is to then follow the steps 203, if it is not, then terminating process；
Optionally, the attach request carries the PLMN number on the terminal attaching ground, and network side is asked according to the attachment
PLMN number in asking, judges whether the terminal is in roaming state, if so, step 203 is continued to execute, if it is not, then tying
Line journey.
Step 203: according to the control field of the attach request, judging the access category of the terminal；
Optionally, it is contemplated that the difference of overseas networks and domestic network, when the roaming place of terminal is overseas, network side can
Control field with the attach request sent according to terminal, and with the combining terminal roaming operator of the country in which it is located and terminal attaching
The signing situation of ground operator, judges the access category of the terminal；Here, the access category of the terminal, it can be understood as
The type of accessing terminal to network；Currently, data services and voice service are substantially while carrying out for domestic network
, it may be assumed that the access category of terminal is mostly based on data and voice；And for overseas network, data services and voice class
Business is then separated, it may be assumed that the access category of terminal can be based on data, can also be based on voice, specifically can basis
The demand of user is configured.
Step 204: raw according to the quality of speech network service when determining that the access category of the terminal with voice is main
At the OPLMN list of speech network；Determine the access category of the terminal with data be it is main when, according to the matter of data network service
Amount, generates the OPLMN list of data network；
Optionally, the OPLMN list of the speech network or the arrangement of the roaming network in the OPLMN list of data network
Sequence is the priority of the network service quality.
Step 205: according to the difference of current time and network data base latest update time, generating and update duration parameters；
Optionally, in practical applications, since network side can carry out more database according to signing situation of operator etc.
Newly, therefore, here, network side was needed according to the current time on terminal current roaming ground and the latest update time of network data base
Difference, generate and update duration parameters, the update duration parameters can indicate with T0.
Step 206: according to the control field of the OPLMN list, generating the digital signature of the OPLMN list；
Optionally, OPLMN list described here can be the OPLMN list of speech network, or data network
OPLMN list；Network side is according to the control field of the OPLMN list, by way of cryptographic calculation, described in generation
The digital signature of OPLMN list, in this way, the safety of the OPLMN list of generation can be improved.
Step 207: the OPLMN list, update duration parameters and digital signature being packaged into roaming network access and disappeared
Breath；
Step 208: Xiang Suoshu terminal sends the roaming network and accesses message；
Optionally, roaming network access message can be the form of short message, or multimedia message or other information
Form.
The embodiment of the present invention provides a kind of cut-in method of roaming network, and Fig. 3 is connecing for roaming network of the embodiment of the present invention
Enter the implementation process schematic diagram of embodiment of the method two, as shown in figure 3, the method is used for terminal side, comprising the following steps:
Step 301: sending attach request to network side；
In this step, terminal sends attach request to network side by 2G/3G/4G network.
Step 302: receiving the roaming network that network side is sent and access message；
Optionally, the roaming network that the terminal receives that network side is sent accesses message, and the roaming network accesses message
Can include but is not limited to following one or more: OPLMN list updates duration parameters, digital signature.
Step 303: when determining that the roaming network access message is legal, message being accessed according to the roaming network, to unrestrained
Trip network is updated；
In this step, terminal retrieves the control field of the roaming network access message, determines the roaming network access
When containing OPLMN keyword in message, digital signature is parsed from roaming network access message；According to the number label
Name judges whether the roaming network access message is legal；When roaming network access message is illegal, terminate process；
Optionally, when roaming network access message is legal, terminal is by the PLMN number of nearest roaming place and currently
The PLMN number of roaming place is matched；
If it is inconsistent, terminal accesses the OPLMN list in message according to the roaming network, roaming network is carried out
It updates；
If consistent, terminal judges whether the network renewal time on current roaming ground is more than that the roaming network access disappears
Update duration parameters in breath, if the network renewal time on current roaming ground is more than the update duration parameters, described
When terminal is in voice service idle state, roaming network is updated；If the network renewal time on current roaming ground is not
More than the update duration parameters, then roaming network is not updated.
It should be noted that if be updated when the terminal is in data service idle state to roaming network,
It is likely to result in the interruption of terminal called data, therefore, method choice of the present invention is in voice service in the terminal
When idle state, roaming network is updated, the interruption of terminal called data can be effectively avoided in this way.
Optionally, after being updated to roaming network, terminal selects the network of high priority in the OPLMN list
Roaming network is accessed, and records the updated PLMN number of this roaming network and time, to be overflow terminal next time
Foundation is provided when swimming network selection.
Below for the cut-in method of the roaming network described in Fig. 3, by example in detail below to the present invention at least one
The cut-in method for the roaming network that a embodiment provides describes in detail.
Example two
Fig. 4 is the implementation process schematic diagram of the cut-in method example two of roaming network of the embodiment of the present invention, as shown in figure 4,
The method is used for terminal side, comprising the following steps:
Step 401: receiving the roaming network that network side is sent and access message；
Optionally, terminal can actively initiate the attach request of access roaming network when entering roaming place to network side, it
Afterwards, the roaming network that terminal receives that network side is sent accesses message；Here, roaming network access message may include but not
Be limited to following one or more: OPLMN list updates duration parameters, digital signature.
Step 402: terminal retrieves the control field of the roaming network access message, judges that the roaming network access disappears
Whether contain OPLMN keyword in breath, if so, 403 are thened follow the steps, if it is not, then terminating process；
Optionally, when containing OPLMN keyword in roaming network access message, then show that the terminal is in unrestrained
Free state, at this point, continuing to execute step 403；If illustrating institute without OPLMN keyword in the roaming network access message
It states terminal and is in non-roaming state, then terminate process.
Step 403: parsing the digital signature from roaming network access message；
Step 404: according to the digital signature, judging whether the roaming network access message is legal, if so, executing
Step 405, if it is not, then terminating process；
Optionally, when roaming network access message is legal, it can be said that the bright roaming network access message is
It is sent by operator from network side, at this point, continuing to execute step 405；When roaming network access message is illegal, then
It can illustrate that the roaming network access message is tampered or forges in transmission process, then terminate process.
Both step 405: the PLMN number of nearest roaming place is matched with the PLMN number on current roaming ground, judge
It is whether consistent, if so, 409 are thened follow the steps, if it is not, thening follow the steps 406；
Optionally, when the PLMN number of nearest roaming place is consistent with the PLMN number on current roaming ground, show the end
It is with holding current roaming identical as nearest roaming place；
When the PLMN number of the PLMN number of nearest roaming place and current roaming ground is inconsistent, show that the terminal is current
Roaming place is different from nearest roaming place, it may be assumed that terminal enters new roaming place.
Step 406: the OPLMN list in message being accessed according to the roaming network, roaming network is updated；
Step 407: the network of high priority in the OPLMN list being selected to access roaming network；
Step 408: recording the updated PLMN number of this roaming network and time；
Optionally, it by recording the updated PLMN number of this roaming network and time, can be carried out for terminal next time
Foundation is provided when roaming network selection.
Step 409: whether the network renewal time for judging current roaming ground is more than in the roaming network access message
Duration parameters are updated, if so, 410 are thened follow the steps, if it is not, thening follow the steps 411；
Optionally, if the network renewal time on current roaming ground is more than the update duration parameters, illustrate currently unrestrained
The data swum in the network data base on ground are updated, at this point, continuing to execute step 410；If the network on current roaming ground
Renewal time is less than the update duration parameters, then illustrates that the data in the network data base on current roaming ground do not update also,
At this point, executing step 411.
Step 410: when the terminal is in voice service idle state, roaming network being updated；
It optionally, may if be updated when the terminal is in data service idle state to roaming network
The interruption of terminal data is caused, therefore, selects when the terminal is in voice service idle state, roaming network is carried out more
Newly.
Step 411: roaming network not being updated.
The embodiment of the present invention provides a kind of cut-in method of roaming network, and Fig. 5 is connecing for roaming network of the embodiment of the present invention
The implementation process schematic diagram for entering embodiment of the method three, as shown in figure 5, the described method comprises the following steps:
Step 501: terminal sends attach request to network side；
Optionally, terminal can actively initiate the attach request of access roaming network when entering roaming place to network side.
Step 502: network side receives the attach request that terminal is sent；
Step 503: roaming network being generated according to the attach request and accesses message；
In this step, the attach request carries the PLMN number on the terminal attaching ground, and network side is according to the attachment
PLMN number in request, judges whether the terminal is in roaming state, if it is not, then terminating process, if so, network lateral root
According to the control field of the attach request, the access category of the terminal is judged；
Optionally, it is contemplated that the difference of overseas networks and domestic network, when the roaming place of terminal is overseas, network side can
Control field with the attach request sent according to terminal, and with the combining terminal roaming operator of the country in which it is located and terminal attaching
The signing situation of ground operator, judges the access category of the terminal；Here, the access category of the terminal, it can be understood as
The type of accessing terminal to network；Currently, data services and voice service are substantially while carrying out for domestic network
, it may be assumed that the access category of terminal is mostly based on data and voice；And for overseas network, data services and voice class
Business is then separated, it may be assumed that the access category of terminal can be based on data, can also be based on voice, specifically can basis
The demand of user is configured.
Therefore, when network side determine the access category of the terminal with voice be it is main when, according to the matter of speech network service
Amount, generates the OPLMN list of speech network；Determine the access category of the terminal with data be it is main when, taken according to data network
The quality of business generates the OPLMN list of data network；
Optionally, network puts in order i.e. in the OPLMN list of the speech network or the OPLMN list of data network
For the priority of network service quality.
In practical applications, since network side can be updated database according to the signing situation etc. of operator,
Here, network side is generated according to the difference of the current time on terminal current roaming ground and the latest update time of network data base
Duration parameters are updated, the update duration parameters can be indicated with T0.
Network side generates the OPLMN column by way of cryptographic calculation according to the control field of the OPLMN list
The digital signature of table, in this way, the safety of the OPLMN list of generation can be improved.
Optionally, the OPLMN list, update duration parameters and digital signature are packaged into roaming network by network side
Access message.
Step 504: Xiang Suoshu terminal sends the roaming network and accesses message；
Step 505: terminal receives the roaming network access message that the network is sent；
Optionally, the roaming network access message can include but is not limited to following one or more: OPLMN list,
Update duration parameters, digital signature.
Step 506: when determining that the roaming network access message is legal, message being accessed according to the roaming network, to unrestrained
Trip network is updated；
In this step, terminal retrieves the control field of the roaming network access message, judges the roaming network access
Whether contain OPLMN keyword in message, if it is not, then terminating process, if so, parsing from roaming network access message
The digital signature out judges whether the roaming network access message is legal according to the digital signature；
Optionally, when roaming network access message is illegal, it can be said that the bright roaming network accesses message
It is tampered or forges in transmission process, then terminate process；When roaming network access message is legal, it can be said that bright institute
State roaming network access message be sent by operator from network side, at this point, terminal by the PLMN number of nearest roaming place with
The PLMN number on current roaming ground is matched, and judges whether the two is consistent；
Optionally, when the PLMN number of nearest roaming place is consistent with the PLMN number on current roaming ground, show the end
Hold current roaming it is identical as nearest roaming place, at this point, terminal further judge current roaming ground network renewal time whether
More than the update duration parameters in roaming network access message；
If the network renewal time on current roaming ground is more than the update duration parameters, illustrate the net on current roaming ground
Data in network database are updated, at this point, when the terminal is in voice service idle state, to roaming network into
Row updates；
If the network renewal time on current roaming ground is less than the update duration parameters, illustrate current roaming ground
Data in network data base do not update also, at this point, not being updated to roaming network；
When the PLMN number of the OPMN number of nearest roaming place and current roaming ground is inconsistent, show that the terminal is current
Roaming place is different from nearest roaming place, it may be assumed that terminal enters new roaming place, at this point, accessing message according to the roaming network
In OPLMN list, roaming network is updated；Later, terminal selects the network pair of high priority in the OPLMN list
Roaming network is accessed, and records the updated PLMN number of this roaming network and time, to be roamed terminal next time
Foundation is provided when network selection.
The embodiment of the present invention provides a kind of access device of roaming network, and Fig. 6 is connecing for roaming network of the embodiment of the present invention
The composed structure schematic diagram for entering Installation practice one, as shown in fig. 6, described device is set to network side, comprising: first receives list
Member 61, generation unit 62 and the first transmission unit 63；Wherein,
First receiving unit 61, for receiving the attach request of terminal transmission；
Optionally, the attach request carries PLMN number.
The generation unit 62 accesses message for generating roaming network according to the attach request；
Optionally, the generation unit 62, specifically for judging the end according to the PLMN number in the attach request
End is in roaming state, if the terminal is in roaming state, generates roaming network access according to the attach request and disappears
Breath；Here, the roaming network access message may include following one or more: OPLMN list updates duration parameters, number
Word signature.
Optionally, the generation unit 62 determines the terminal specifically for the control field according to the attach request
Access category with voice be it is main when, according to the quality of speech network service, generate the OPLMN list of speech network；Determine institute
State the access category of terminal with data be it is main when, according to the quality of data network service, generate the OPLMN list of data network.
Optionally, the generation unit 62, is also used to the difference according to current time and network data base latest update time
Value, generates the update duration parameters；
The generation unit 62 is also used to the control field according to the OPLMN list, generates the OPLMN list
Digital signature；
Optionally, the generation unit 62 is specifically used for the OPLMN list, updates duration parameters and number label
Name is packaged into roaming network access message.
First transmission unit 63 accesses message for sending the roaming network to the terminal.
The embodiment of the present invention provides a kind of access device of roaming network, and Fig. 7 is connecing for roaming network of the embodiment of the present invention
The composed structure schematic diagram one for entering Installation practice two, as shown in fig. 7, described device is set to terminal side, comprising: second sends
Unit 71, the second receiving unit 72, updating unit 73；Wherein,
Second transmission unit 71, for sending attach request to network side；
Second receiving unit 72, the roaming network for receiving network side transmission access message；
Optionally, second receiving unit 72 received roaming network access message can include but is not limited to next
Item is multinomial: OPLMN list updates duration parameters, digital signature.
The updating unit 73 connects when for determining that the roaming network access message is legal according to the roaming network
Enter message, roaming network is updated；
Optionally, the updating unit 73 is determined specifically for retrieving the control field of the roaming network access message
When containing OPLMN keyword in the roaming network access message, digital label are parsed from roaming network access message
Name；According to the digital signature, judge whether the roaming network access message is legal；
Optionally, the updating unit 73, specifically for by the PLMN number of nearest roaming place and current roaming ground
PLMN number is matched, if it is inconsistent, the OPLMN list in message is accessed according to the roaming network, to roaming network
Network is updated；
The updating unit 73 is also used to consistent with the PLMN number on current roaming ground in the PLMN number of nearest roaming place
When, judge whether the network renewal time on current roaming ground is more than update duration parameters in roaming network access message；
If the network renewal time on current roaming ground is more than the update duration parameters, voice service free time shape is in the terminal
When state, roaming network is updated；If the network renewal time on current roaming ground is less than the update duration parameters,
Roaming network is not updated.
Optionally, described device can also include: access unit 74, as shown in figure 8, Fig. 8 is roaming of the embodiment of the present invention
The composed structure schematic diagram two of the access device embodiment two of network, the access unit 74, for selecting the OPLMN list
The network of middle high priority accesses roaming network；
Optionally, described device can also include: recording unit 75, as shown in figure 9, Fig. 9 is roaming of the embodiment of the present invention
The composed structure schematic diagram three of the access device embodiment two of network, the recording unit 75, for recording this roaming network
Updated PLMN number and time.
The embodiment of the present invention also provides a kind of access system of roaming network, and Figure 10 is roaming network of the embodiment of the present invention
The composed structure schematic diagram of access system embodiment, Figure 11 are the frame of the access system embodiment of roaming network of the embodiment of the present invention
Frame schematic diagram, as shown in Figure 10,11, the system comprises: network side roaming network access device 101 and terminal side roaming
Network access device 102；Wherein,
The network side roaming network access device 101, for receiving the attach request of terminal transmission, according to the attachment
Request generates roaming network and accesses message, and Xiang Suoshu terminal sends the roaming network and accesses message；
The terminal side roaming network access device 102 receives network side and sends for sending attach request to network side
Roaming network access message, when determining that roaming network access message is legal, message is accessed according to the roaming network, it is right
Roaming network is updated；
Optionally, the network side roaming network access device 101 can be device shown in fig. 6, comprising: first receives
Unit 61, generation unit 62 and the first transmission unit 63；
Optionally, the terminal side roaming network access device 102 can be Fig. 7, Fig. 8, device shown in Fig. 9, comprising:
Second transmission unit 71, the second receiving unit 72, updating unit 73, access unit 74 and recording unit 75；
In practical applications, first receiving unit 61, generation unit 62 and the first transmission unit 63 can be by being located at
Central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or the field programmable gate array of network side
(FPGA) it realizes.
Second transmission unit 71, the second receiving unit 72, updating unit 73, access unit 74 and recording unit
75 can be realized by CPU, MPU, DSP or the FPGA for being located at terminal side.
If the cut-in method of roaming network described in the embodiment of the present invention is realized simultaneously in the form of software function module
When sold or used as an independent product, it also can store in a computer readable storage medium.Based on such
Understand, it should be understood by those skilled in the art that, embodiments herein can provide as the production of method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or implementation combining software and hardware aspects can be used in the application
The form of example.Moreover, can be used can in the computer that one or more wherein includes computer usable program code by the application
With the form for the computer program product implemented on storage medium, the storage medium include but is not limited to USB flash disk, mobile hard disk,
Read-only memory (ROM, Read-Only Memory), magnetic disk storage, CD-ROM, optical memory etc..
The application is according to the method, apparatus of the embodiment of the present application and the flow chart of computer program product and/or side
Block diagram describes.It should be understood that each process and/or the side in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in frame and flowchart and/or the block diagram.These computer program instructions be can provide to logical
With the processor of computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine
Device, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for realizing in process
The device for the function of being specified in figure one process or multiple processes and/or block diagrams one box or multiple boxes.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Correspondingly, the embodiment of the present invention also provides a kind of computer storage medium, wherein it is stored with computer program, the meter
Calculation machine program is used to execute the cut-in method of roaming network described in embodiment of the present invention method.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (23)
1. a kind of cut-in method of roaming network, which is characterized in that the method is used for network side, comprising:
Receive the attach request that terminal is sent；
Roaming network, which is generated, according to the attach request accesses message；
The roaming network, which is sent, to the terminal accesses message；
Wherein, the roaming network access message includes: operator's control public land mobile network OPLMN list；
Alternatively, the roaming network access message includes: OPLMN list, and the roaming network accesses message further include: updates
Duration parameters and/or digital signature.
2. the method according to claim 1, wherein the attach request carries public land mobile network PLMN
Number, it is described after receiving the attach request that terminal is sent, the method also includes:
According to the PLMN number in the attach request, judge whether the terminal is in roaming state, if at the terminal
In roaming state, then roaming network is generated according to the attach request and access message.
3. the method according to claim 1, wherein the generation OPLMN list, comprising:
According to the control field of the attach request, when determining that the access category of the terminal with voice is main, according to voice network
The quality of network service generates the OPLMN list of speech network；
Determine the access category of the terminal with data be it is main when, according to the quality of data network service, generate data network
OPLMN list.
4. the method according to claim 1, wherein the generation updates duration parameters, comprising:
According to the difference of current time and network data base latest update time, generates and update duration parameters.
5. the method according to claim 1, wherein the generation digital signature, comprising:
According to the control field of the OPLMN list, the digital signature of the OPLMN list is generated.
6. a kind of cut-in method of roaming network, which is characterized in that the method is used for terminal side, comprising:
Attach request is sent to network side；
It receives the roaming network that network side is sent and accesses message；
When determining that the roaming network access message is legal, message is accessed according to the roaming network, roaming network is carried out more
Newly；
Wherein, the roaming network access message includes: OPLMN list；
Alternatively, the roaming network access message includes: OPLMN list, and the roaming network accesses message further include: updates
Duration parameters and/or digital signature.
7. according to the method described in claim 6, it is characterized in that, this method further include: judge that roaming network access message is
It is no legal, specifically:
Terminal retrieves the control field of the roaming network access message, determines and contains in the roaming network access message
When OPLMN keyword, digital signature is parsed from roaming network access message；
Judge whether the roaming network access message is legal according to the digital signature.
8. according to the method described in claim 6, it is characterized in that, described access message according to roaming network, to roaming network
It is updated, comprising:
Terminal matches the PLMN number of nearest roaming place with the PLMN number on current roaming ground, if it is inconsistent, root
According to the OPLMN list in roaming network access message, roaming network is updated.
9. according to the method described in claim 8, it is characterized in that, the method also includes:
If the PLMN number of nearest roaming place is consistent with the PLMN number on current roaming ground, the network on current roaming ground is judged
Whether renewal time is more than update duration parameters in roaming network access message, if the network on current roaming ground updates
Time is more than the update duration parameters, then when the terminal is in voice service idle state, carries out more to roaming network
Newly；If the network renewal time on current roaming ground is less than the update duration parameters, roaming network is not updated.
10. according to the method described in claim 6, it is characterized in that, the method is also after being updated to roaming network
Include:
The network of high priority in the OPLMN list is selected to access roaming network；
Record the updated PLMN number of this roaming network and time.
11. a kind of cut-in method of roaming network, which is characterized in that the described method includes:
Network side method according to any one of claims 1 to 5 carries out the access of roaming network；
Terminal side carries out the access of roaming network according to the described in any item methods of claim 6 to 10.
12. a kind of access device of roaming network, which is characterized in that described device is set to network side, comprising: first receives list
Member, generation unit and the first transmission unit；Wherein,
First receiving unit, for receiving the attach request of terminal transmission；
The generation unit accesses message for generating roaming network according to the attach request；
First transmission unit accesses message for sending the roaming network to the terminal；
Wherein, it includes: OPLMN list that first transmission unit, which sends the roaming network access message to the terminal,；
Alternatively, the roaming network access message includes: OPLMN list, and the roaming network accesses message further include: updates
Duration parameters and/or digital signature.
13. device according to claim 12, which is characterized in that the attach request carries PLMN number,
The generation unit, specifically for judging whether the terminal is in unrestrained according to the PLMN number in the attach request
Free state generates roaming network according to the attach request and accesses message if the terminal is in roaming state.
14. device according to claim 12, which is characterized in that the generation unit is specifically used for according to the attachment
The control field of request according to the quality of speech network service, generates when determining that the access category of the terminal with voice is main
The OPLMN list of speech network；Determine the access category of the terminal with data be it is main when, according to the matter of data network service
Amount, generates the OPLMN list of data network.
15. device according to claim 12, which is characterized in that the generation unit is specifically used for according to current time
With the difference of network data base latest update time, the update duration parameters are generated.
16. device according to claim 12, which is characterized in that the generation unit is specifically used for according to the OPLMN
The control field of list generates the digital signature of the OPLMN list.
17. a kind of access device of roaming network, which is characterized in that described device is set to terminal side, comprising: second sends list
Member, the second receiving unit and updating unit；Wherein,
Second transmission unit, for sending attach request to network side；
Second receiving unit, the roaming network for receiving network side transmission access message；
The updating unit accesses message according to the roaming network when for determining that the roaming network access message is legal,
Roaming network is updated；
Wherein, the received roaming network access message of second receiving unit includes: OPLMN list；
Alternatively, the roaming network access message includes: OPLMN list, and the roaming network accesses message further include: updates
Duration parameters and/or digital signature.
18. device according to claim 17, which is characterized in that
The updating unit determines the roaming network specifically for retrieving the control field of the roaming network access message
When accessing in message containing OPLMN keyword, digital signature is parsed from roaming network access message；According to the number
Word signature judges whether the roaming network access message is legal.
19. device according to claim 17, which is characterized in that
A updating unit, specifically for carrying out the PLMN number on the PLMN number of nearest roaming place and current roaming ground
Match, if it is inconsistent, accessing the OPLMN list in message according to the roaming network, roaming network is updated.
20. device according to claim 19, which is characterized in that
The updating unit, be also used to PLMN number in nearest roaming place it is consistent with the PLMN number on current roaming ground when, sentence
Whether the network renewal time on disconnected current roaming ground is more than update duration parameters in the roaming network access message, if worked as
The network renewal time of preceding roaming place is more than the update duration parameters, when the terminal is in voice service idle state,
Roaming network is updated；If the network renewal time on current roaming ground is less than the update duration parameters, not right
Roaming network is updated.
21. device according to claim 17, which is characterized in that described device further include: access unit and record
Member；Wherein,
The access unit, for selecting the network of high priority in the OPLMN list to access roaming network；
The recording unit, for recording the updated PLMN number of this roaming network and time.
22. a kind of access system of roaming network, which is characterized in that the system comprises: network side roaming network access device,
And terminal side roaming network access device；Wherein,
The network side roaming network access device, it is raw according to the attach request for receiving the attach request of terminal transmission
Message is accessed at roaming network, Xiang Suoshu terminal sends the roaming network and accesses message；
The terminal side roaming network access device receives the roaming that network side is sent for sending attach request to network side
Network insertion message accesses message according to the roaming network, to roaming network when determining that the roaming network access message is legal
Network is updated；
Wherein, the roaming network access message includes: OPLMN list；
Alternatively, the roaming network access message includes: OPLMN list, and the roaming network accesses message further include: updates
Duration parameters and/or digital signature.
23. system according to claim 22, which is characterized in that
The network side roaming network access device is the described in any item devices of claim 12 to 16；
The terminal side roaming network access device is the described in any item devices of claim 17 to 21.
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