CN105828403A - Method and device for switching between networks - Google Patents
Method and device for switching between networks Download PDFInfo
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- CN105828403A CN105828403A CN201510008821.4A CN201510008821A CN105828403A CN 105828403 A CN105828403 A CN 105828403A CN 201510008821 A CN201510008821 A CN 201510008821A CN 105828403 A CN105828403 A CN 105828403A
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Abstract
The invention discloses a method and a device for switching between networks, so as to solve the problem that part of terminals can not be successfully switched to an LTE network. The method comprises steps: when the terminal is determined to move to an LTE network coverage range from a 2G or 3G network, an attachment request message sent when the terminal is accessed to the 2G or 3G network is read; when the terminal is determined to be an LTE terminal according to terminal reporting information carried by the attachment request message, the LTE network usage privilege of the terminal is judged based on the terminal reporting information and in combination with an access control strategy pre-stored in the network side and corresponding to the terminal; and when the terminal is determined to have the LTE usage privilege, an attachment receiving message is sent to the terminal, the terminal is indicated to initiate a PDP activation request to the current attached network. Thus, when the LTE terminal moves to the LTE network coverage range, the LTE terminal can be successfully switched to the LTE network, the network service quality is improved, and the user service completion success rate is enhanced.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the method and apparatus of switching between a kind of network.
Background technology
At present, although Long Term Evolution (LongTermEvolution, LTE) technology is the most extensive commercial, but some places LTE network covers the most weak, the most inevitably have LTE user and can be first attached to 2G/3G network, the place strong etc. moving to LTE network signal, (TrackingAreaUpdate is updated again from 2G/3G network trace district, TAU) to LTE network, third generation partner program (ThirdGenerationPartnershipProject at present, 3GPP) the TAU flow process of regulation in agreement, as shown in Figure 1.
In block core evolution (EvolvedPacketCore, EPC) network, according to the regulation of 3GPP agreement, user is always online, i.e. user one start will adhere to and activate on EPC network.But adhering under 2G/3G network according to the regulation user of 3GPP agreement and activating is two independent flow processs, it is not required to after attachment activate immediately, only using general packet radio service technology (GeneralPacketRadioSystem, GPRS) packet data protocol (PacketDataProtocol, PDP) is just needed to activate the when of business.Owing to 3GPP agreement is different in the regulation using 2/3G and LTE network to user, when LTE user TAU between 2/3 network and LTE network when, just have following two scene occur:
The first sight is: LTE user is in 2G/3G network attachment and have activated, this user can successfully TAU to LTE network.
The second sight is: LTE user's only attachment under 2G/3G network does not activate, and at this time this user TAU will be failed to LTE network.This is because the Mobility Management Entity (MobilityManagementEntity that this user is present, MME) original GPRS serving GPRS support node (OldServingGPRSSupportNode is removed, OldSGSN) PDP Context of user is obtained up, but the PDP Context of upper not this user of OldSGSN, as shown in Figure 2.So will result in TAU failure, affect KPI Key Performance Indicator (KeyPerformanceIndicator, the KPI) value of network, also affect user's perception, the Web vector graphic function of restriction user, the up-downgoing speed causing user is low.
Summary of the invention
The method and apparatus that it is an object of the invention to provide between a kind of network switching, with solve part terminal cannot successful switch to the problem of LTE network.
It is an object of the invention to be achieved through the following technical solutions:
Between a kind of network, the method for switching, applies at network side, including:
Determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network；
The reporting information by terminal carried according to described Attach Request message determines when described terminal is LTE terminal, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, authority is used to judge the LTE network of described terminal；
Determine that described terminal has the LTE right to use in limited time, send attachment to described terminal and accept message, indicate described terminal to initiate PDP activation request to the network of current attachment；Wherein, described attachment accept message carry for indicate described terminal initiate data pack protocol PDP activation request field.
So, initiate PDP activation by instruction terminal to ask, it is possible to ensure successfully to be switched to when LTE terminal moves to LTE network coverage LTE network, improve network service quality, promote the success rate of user's finishing service.
Optionally, determine that terminal, after 2G or 3G network move to the coverage of Long Term Evolution LTE network, before the Attach Request message that reading terminals sends when accessing 2G or 3G network, farther includes:
The signal intensity of LTE network is detected, it is determined that the signal intensity of LTE network, more than when setting threshold value, determines that described terminal accesses LTE network.
Optionally, determine that described terminal is LTE terminal according to the reporting information by terminal carried in described Attach Request message, specifically include:
Network capabilities field from the terminal to report message that described Attach Request message carries reads block core evolvement network EPC ability parameter；
When determining that described terminal has support LTE network ability based on described EPC ability parameter, determine that described terminal is LTE terminal.
Optionally, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, authority is used to judge the LTE network of described terminal, including:
Based on described reporting information by terminal, the international mobile subscriber identification code IMSI of described terminal is read from described reporting information by terminal, according to the Access Control Policy inquiry prestored in LTE network corresponding to the Access Control authority under the LTE network of described IMSI, authority is used to judge the LTE network of described terminal.
Between a kind of network, the method for switching, applies in end side, including:
Terminal sends Attach Request message to 2G or 3G network, is attached to 2G or 3G network；
If described terminal receives attachment accepts message, then receive message based on described attachment and send PDP activation request to network side；
Described terminal is asked based on described PDP activation, and after moving to LTE network coverage, 2G or 3G network by currently adhering to switch to LTE network,
Wherein, described attachment accepts message based on described Attach Request message, to be network side determine that described terminal is that LTE terminal and having after LTE network uses authority issues, and described attachment accepts to carry in message for indicating described terminal to initiate the field of PDP activation request.
In such manner, it is possible to ensure successfully to be switched to when LTE terminal moves to LTE network coverage LTE network, improve network service quality, promote the success rate of user's finishing service.
Optionally, described terminal receives message based on described attachment and initiates PDP activation request, including:
Terminal receives after described attachment accepts message, uses the access point APN of acquiescence to access given server, and sends PDP activation request to described given server；Or,
Terminal receives after described attachment accepts message, uses the APN of acquiescence to access public server, and sends PDP activation request to described public server.
Between a kind of network, the device of switching, applies at network side, including:
Read unit, for determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network；
Judging unit, reporting information by terminal for carrying according to described Attach Request message determines when described terminal is LTE terminal, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, authority is used to judge the LTE network of described terminal；
Transmitting element, is used for determining that described terminal has the LTE right to use in limited time, sends attachment to described terminal and accept message, indicates described terminal to initiate PDP activation request to the network of current attachment；Wherein, described attachment accept message carry for indicate described terminal initiate data pack protocol PDP activation request field.
So, initiate PDP activation by instruction terminal to ask, it is possible to ensure successfully to be switched to when LTE terminal moves to LTE network coverage LTE network, improve network service quality, promote the success rate of user's finishing service.
Optionally, determine terminal after 2G or 3G network move to the coverage of Long Term Evolution LTE network, before reading terminals accesses 2G or the Attach Request message that sends during 3G network, described reading unit is further used for:
The signal intensity of LTE network is detected, it is determined that the signal intensity of LTE network, more than when setting threshold value, determines that described terminal accesses LTE network.
Optionally, when determining that described terminal is LTE terminal according to the reporting information by terminal carried in described Attach Request message, described judging unit specifically for:
Network capabilities field from the terminal to report message that described Attach Request message carries reads block core evolvement network EPC ability parameter；
When determining that described terminal has support LTE network ability based on described EPC ability parameter, determine that described terminal is LTE terminal.
Optionally, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, when using authority to judge the LTE network of described terminal, described judging unit specifically for:
Based on described reporting information by terminal, the international mobile subscriber identification code IMSI of described terminal is read from described reporting information by terminal, according to the Access Control Policy inquiry prestored in LTE network corresponding to the Access Control authority under the LTE network of described IMSI, authority is used to judge the LTE network of described terminal.
Between a kind of network, the device of switching, applies in end side, including:
Transmitting element, for sending Attach Request message to 2G or 3G network, is attached to 2G or 3G network；
Processing unit, for when receiving attachment and accepting message, receives message based on described attachment and sends PDP activation request to network side；
Switch unit, for asking based on described PDP activation, after moving to LTE network coverage, 2G or 3G network by currently adhering to switch to LTE network,
Wherein, described attachment accepts message based on described Attach Request message, to be network side determine that described terminal is that LTE terminal and having after LTE network uses authority issues, and described attachment accepts to carry in message for indicating described terminal to initiate the field of PDP activation request.
Optionally, when receiving message initiation PDP activation request based on described attachment, described processing unit is used for:
Receiving after described attachment accepts message, using the access point APN of acquiescence to access given server, and send PDP activation request to described given server；Or,
Receiving after described attachment accepts message, using the APN of acquiescence to access public server, and send PDP activation request to described public server.
In such manner, it is possible to ensure successfully to be switched to when LTE terminal moves to LTE network coverage LTE network, improve network service quality, promote the success rate of user's finishing service.
Accompanying drawing explanation
Fig. 1 is the TAU schematic flow sheet of regulation in 3GPP agreement；
Fig. 2 is the failed schematic diagram of conventional TAU flow process；
Fig. 3 be in the embodiment of the present invention terminal from 2G/3G network TAU to LTE network schematic diagram；
Fig. 4 A is to apply the network method for switching between schematic flow sheet at network side in the embodiment of the present invention；
Fig. 4 B is to apply the network method for switching between schematic flow sheet in end side in the embodiment of the present invention；
Fig. 5 is network method for switching between detailed process schematic diagram in the embodiment of the present invention；
Fig. 6 is to apply the inter-network switching device structural representation at network side in the embodiment of the present invention；
Fig. 7 is to apply the inter-network switching device structural representation in end side in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, is not whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
The present invention does not has data pack protocol (PacketDataProtocol by regulation only attachment under 2G/3G network, PDP) (2G User Status is ready to context activation, 3G subscription state is connected) LTE user TAU to before LTE network, the SGSN of current LTE user's attachment can actively pass through the field carried in Attachaccept signaling, this user is indicated to do a coin free service, SGSN creates a PDP Context, it is thus possible to normally complete TAU flow process, see shown in Fig. 3.
Refering to shown in Fig. 4 A, providing a kind of method of switching between network in the embodiment of the present invention, idiographic flow is as follows:
Step 400: determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network.
Further, determine that terminal is after 2G or 3G network move to the coverage of Long Term Evolution LTE network, the signal intensity of LTE network is detected, judge that the signal intensity of LTE network is more than when setting threshold value, after determining that this terminal accesses LTE network, the Attach Request message that reading terminals sends when accessing 2G or 3G network.
Such as, regulation according to 3GPP agreement, user is always online, i.e. user one start will adhere to and activate on EPC network, if terminal region is only coated with 2G or 3G network, as long as then terminal start will send Attach Request message to the network searched immediately, it is attached to this network, when terminal is from the 2G adhered to or the coverage of 3G network, when moving to the coverage of LTE network, the signal intensity of LTE network is detected, determine that the signal intensity of LTE network is more than when setting threshold value, it is determined to be switched to this LTE network, so can guarantee that the network service quality after handover success rate and handover success.
Step 401: the reporting information by terminal carried according to above-mentioned Attach Request message determines when terminal is LTE terminal, based on this reporting information by terminal, in conjunction with network side prestore to should the Access Control Policy of terminal, use authority to judge the LTE network of this terminal.
Concrete, determining that this terminal is LTE terminal according to the reporting information by terminal carried in above-mentioned Attach Request message, detailed process is: the network capabilities field from the terminal to report message that this Attach Request message carries reads EPC ability parameter；When determining that this terminal has support LTE network ability based on this EPC ability parameter, determine that this terminal is LTE terminal.
Such as, after a certain user terminal initiates Attach Request message, read block core evolvement network ability (EPCcapability) parameter in mobile subscriber's network ability (MSnetworkcapability) field in the terminal to report message that SGSN carries from Attach Request message judging that user uses no is LTE terminal, and wherein MSnetworkcapability cell is described as follows shown:
If the EPCCapability in MSnetworkcapability cell is Support (the as above row second from the bottom in figure), illustrate that this user terminal is LTE terminal, i.e. SGSN judges that this user is LTE terminal user, then carry the field of " instruction terminal is initiated to activate immediately " in the message that the attachment sent to user terminal accepts.
Concrete, based on reporting information by terminal, in conjunction with network side prestore to should the Access Control Policy of terminal, authority is used to judge the LTE network of this terminal, concrete mistake is referred to as: based on this reporting information by terminal, international mobile subscriber identification code (the InternationalMobileSubscriberIdentity of this terminal is read from this reporting information by terminal, IMSI), according to the Access Control authority under the Access Control Policy inquiry prestored in the LTE network LTE network corresponding to this IMSI, authority is used to judge the LTE network of this terminal.
Such as, LTE terminal is from 2G/3G network insertion, S1 Interface User Access Control mark (S1AccessRestrictionData in Access Control Policy to be seen, S1ARD) whether configuration refuses it for this LTE terminal and access E-UTRAN network, if refusal, the most do not allow it to access LTE network, otherwise allow its LTE network to access.
Step 402: determine that terminal has the LTE right to use in limited time, send attachment to this terminal and accept message, indicating this terminal to initiate PDP activation request to the network of current attachment, wherein, this attachment accepts message and carries for indicating this terminal to initiate the field of data pack protocol PDP activation request.
Such as, accept (Attachaccept) message is inserted the field of " instruction terminal initiates PDP activation request after attachment completes immediately " sending attachment to terminal, terminal is indicated to initiate PDP activation request to SGSN immediately, as follows for the Attachaccept field under the 3GPP agreement in the embodiment of the present invention, concrete as shown in table 1,
Table 1
Refering to shown in Fig. 4 B, also providing for a kind of method of switching between network, apply in end side in the embodiment of the present invention, idiographic flow is:
Step S40: terminal sends Attach Request message to 2G or 3G network, is attached to 2G or 3G network.
Step S41: terminal is after the current 2G adhered to or 3G network move to the coverage of Long Term Evolution LTE network, if receiving attachment to accept message, then receives message based on this attachment and sends PDP activation request to network side；
Step S42: terminal is asked based on PDP activation, and 2G or 3G network by currently adhering to switch to LTE network.
Wherein, attachment accepts message based on this Attach Request message, to be network side determine that terminal is that LTE terminal and having after LTE network uses authority issues, and this attachment accepts to carry in message for indicating terminal to initiate the field of PDP activation request.
Concrete, terminal receives message based on attachment and initiates PDP activation request, and two ways specifically can be had to realize:
First kind of way is: terminal receives after attachment accepts message, uses the Access Point Name (AccessPointName, APN) of acquiescence to access given server, and sends PDP activation request to this given server；
The second way is: terminal receives after attachment accepts message, uses the APN of acquiescence to access public server, and sends PDP activation request to this given server.
With a concrete practical scene, above-described embodiment is made further description below.
Refering to shown in Fig. 5, the present invention provides a kind of LTE user terminal from the method for 2G/3G network TAU to LTE network in implementing, and idiographic flow is as follows:
S501: judge whether user (UserEquipment, UE) terminal is LTE terminal, the most then perform step S502, otherwise, perform step S506.
UE terminal capability carries in MSNetworkCapability cell, wherein under 2G/3G access module, EPC ability (EPCcapability) position in this cell indicates whether UE supports LTE (i.e. S1 interface) access module, under LTE access module, protocol requirement supports that the UE of 2G/3G access module should carry this cell in attachment request (AttachRequest) and tracing section updating request (TAURequest) message.
S502: the Access Control Policy prestored according to network side determines whether that UE accesses, the most then perform step S503, otherwise, perform step S506.
Whether LTE terminal refuses it in the S1ARD configuration from 2G/3G network insertion, Access Control Policy to be seen is accessed E-UTRAN network, if refusal, does not the most allow it to access LTE network, otherwise allows its LTE network to access.
S503: allow UE terminal to access LTE network.
S504: insert the field of " instruction terminal initiates PDP activation request after attachment completes immediately " in attachment accepts (Attachaccept), indicates terminal to initiate to activate request to SGSN immediately.
After S505: this UE terminal receives the message of SGSN instruction, after completing attachment flow, actively (unartificial) carries out service request initiation PDP activation flow process immediately, then performs step S507.
Terminal mode actively, including, but not limited to unartificial modes such as background programs, does not has any perception the most for a user.For the business actively initiated including, but not limited to going to access a fixing or public server with the APN of an acquiescence.Meanwhile, UGW identifies according to charging configuration, the up-downgoing charge on traffic this service request activation process not produced.This configuration can be by operator's flexible configuration, business for not charging can go to identify by 7 layers, 7 layer protocol groups and 34 layers, to up-downgoing flow all not chargings produced by this business, can not embody in the Call Detail Record that user can see for ticket produced by this business.
S506: do not allow UE terminal to access LTE network, then perform step S507.
S507: flow process terminates.
Refering to shown in Fig. 6, the present invention also provides in implementing a kind of applying the inter-network switching device at network side, including: read unit 60, judging unit 61, transmitting element 62, wherein:
Read unit 60, for determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network.
Judging unit 61, reporting information by terminal for carrying according to Attach Request message determines when this terminal is LTE terminal, based on this reporting information by terminal, in conjunction with network side prestore to should the Access Control Policy of terminal, use authority to judge the LTE network of this terminal.
Transmitting element 62, for determining that this terminal has the LTE right to use in limited time, send attachment to this terminal and accept message, this terminal is indicated to indicate described terminal to initiate PDP activation request to the network of current attachment, wherein, this attachment accept message carry for indicate this terminal initiate data pack protocol PDP activation request field.
Optionally, determine that terminal, after 2G or 3G network move to the coverage of Long Term Evolution LTE network, before the Attach Request message that reading terminals sends when accessing 2G or 3G network, reads unit 60 and is further used for:
The signal intensity of LTE network is detected, it is determined that the signal intensity of LTE network, more than when setting threshold value, determines that this terminal accesses LTE network.
Optionally, when determining that this terminal is LTE terminal according to the reporting information by terminal carried in Attach Request message, it is judged that unit 61 specifically for:
Network capabilities field from the terminal to report message that Attach Request message carries reads block core evolvement network EPC ability parameter；When determining that this terminal has support LTE network ability based on this EPC ability parameter, determine that this terminal is LTE terminal.
Optionally, based on reporting information by terminal, in conjunction with network side prestore to should the Access Control Policy of terminal, when using authority to judge the LTE network of this terminal, it is judged that unit 61 specifically for:
Based on this reporting information by terminal, the international mobile subscriber identification code IMSI of this terminal is read from this reporting information by terminal, according to the Access Control authority under the Access Control Policy inquiry prestored in the LTE network LTE network corresponding to this IMSI, authority is used to judge the LTE network of this terminal.
Refering to shown in Fig. 7, the present invention also provides in implementing a kind of applying the inter-network switching device in end side, including: transmitting element 70, processing unit 71, switch unit 72, wherein:
Transmitting element 70, for sending Attach Request message to 2G or 3G network, is attached to 2G or 3G network.
Processing unit 71, for when receiving attachment and accepting message, receives message based on this attachment and sends PDP activation request to network side.
Switch unit 72, for asking based on PDP activation, after moving to LTE network coverage, 2G or 3G network by currently adhering to switch to LTE network, wherein, attachment accepts message based on this Attach Request message, to be network side determine that this terminal is that LTE terminal and having after LTE network uses authority issues, and this attachment accepts to carry in message for indicating this terminal to initiate the field of PDP activation request.
Optionally, when receiving message initiation PDP activation request based on attachment, processing unit 71 is used for:
Receiving after this attachment accepts message, using the Access Point Name APN of acquiescence to access given server, and send PDP activation request to this given server；Or,
Receiving after this attachment accepts message, using the APN of acquiescence to access public server, and send PDP activation request to this given server.
In sum, the present invention determine in implementing terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network；The reporting information by terminal carried according to this Attach Request message determines when this terminal is LTE terminal, based on this reporting information by terminal, in conjunction with network side prestore to should the Access Control Policy of terminal, use authority to judge the LTE network of this terminal；Determine that this terminal has the LTE right to use in limited time, send attachment to this terminal and accept message, this terminal is indicated to initiate PDP activation request to the network of current attachment, wherein, this attachment accepts message and carries for indicating this terminal to initiate the field of data pack protocol PDP activation request, in such manner, it is possible to ensure successfully to be switched to LTE network when LTE terminal moves to LTE network coverage, improve network service quality, promote the success rate of user's finishing service.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the form of the embodiment in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware.And, the present invention can use the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is to describe with reference to method, equipment (system) and the flow chart of computer program according to embodiments of the present invention and/or block diagram.It should be understood that can be by the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces the manufacture including command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to perform sequence of operations step on computer or other programmable devices to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides the step of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame for realization.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification spirit and scope without deviating from the embodiment of the present invention to the embodiment of the present invention.So, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a method for switching between network, applies at network side, it is characterised in that including:
Determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network；
The reporting information by terminal carried according to described Attach Request message determines when described terminal is LTE terminal, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, authority is used to judge the LTE network of described terminal；
Determine that described terminal has the LTE right to use in limited time, send attachment to described terminal and accept message, indicate described terminal to initiate PDP activation request to the network of current attachment；Wherein, described attachment accept message carry for indicate described terminal initiate data pack protocol PDP activation request field.
2. the method for claim 1, it is characterised in that determine that terminal, after 2G or 3G network move to the coverage of Long Term Evolution LTE network, before the Attach Request message that reading terminals sends when accessing 2G or 3G network, farther includes:
The signal intensity of LTE network is detected, it is determined that the signal intensity of LTE network, more than when setting threshold value, determines that described terminal accesses LTE network.
3. method as claimed in claim 1 or 2, it is characterised in that determine that described terminal is LTE terminal according to the reporting information by terminal carried in described Attach Request message, specifically include:
Network capabilities field from the terminal to report message that described Attach Request message carries reads block core evolvement network EPC ability parameter；
When determining that described terminal has support LTE network ability based on described EPC ability parameter, determine that described terminal is LTE terminal.
4. method as claimed in claim 3, it is characterised in that based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, use authority to judge the LTE network of described terminal, including:
Based on described reporting information by terminal, the international mobile subscriber identification code IMSI of described terminal is read from described reporting information by terminal, according to the Access Control Policy inquiry prestored in LTE network corresponding to the Access Control authority under the LTE network of described IMSI, authority is used to judge the LTE network of described terminal.
5. a method for switching between network, applies in end side, it is characterised in that including:
Terminal sends Attach Request message to 2G or 3G network, is attached to 2G or 3G network；
If described terminal receives attachment accepts message, then receive message based on described attachment and send PDP activation request to network side；
Described terminal is asked based on described PDP activation, and after moving to LTE network coverage, 2G or 3G network by currently adhering to switch to LTE network,
Wherein, described attachment accepts message based on described Attach Request message, to be network side determine that described terminal is that LTE terminal and having after LTE network uses authority issues, and described attachment accepts to carry in message for indicating described terminal to initiate the field of PDP activation request.
6. method as claimed in claim 5, it is characterised in that described terminal receives message based on described attachment and initiates PDP activation request, including:
Terminal receives after described attachment accepts message, uses the access point APN of acquiescence to access given server, and sends PDP activation request to described given server；Or,
Terminal receives after described attachment accepts message, uses the APN of acquiescence to access public server, and sends PDP activation request to described public server.
7. a device for switching between network, applies at network side, it is characterised in that including:
Read unit, for determine terminal when 2G or 3G network move to the coverage of Long Term Evolution LTE network, reading terminals accesses 2G or the Attach Request message sent during 3G network；
Judging unit, reporting information by terminal for carrying according to described Attach Request message determines when described terminal is LTE terminal, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, authority is used to judge the LTE network of described terminal；
Transmitting element, is used for determining that described terminal has the LTE right to use in limited time, sends attachment to described terminal and accept message, indicates described terminal to initiate PDP activation request to the network of current attachment；Wherein, described attachment accept message carry for indicate described terminal initiate data pack protocol PDP activation request field.
8. device as claimed in claim 7, it is characterized in that, determine terminal after 2G or 3G network move to the coverage of Long Term Evolution LTE network, before reading terminals accesses 2G or the Attach Request message that sends during 3G network, described reading unit is further used for:
The signal intensity of LTE network is detected, it is determined that the signal intensity of LTE network, more than when setting threshold value, determines that described terminal accesses LTE network.
9. as claimed in claim 7 or 8 device, it is characterised in that when determining that described terminal is LTE terminal according to the reporting information by terminal carried in described Attach Request message, described judging unit specifically for:
Network capabilities field from the terminal to report message that described Attach Request message carries reads block core evolvement network EPC ability parameter；
When determining that described terminal has support LTE network ability based on described EPC ability parameter, determine that described terminal is LTE terminal.
10. device as claimed in claim 9, it is characterized in that, based on described reporting information by terminal, in conjunction with the Access Control Policy of the described terminal of correspondence that network side prestores, when using authority to judge the LTE network of described terminal, described judging unit specifically for:
Based on described reporting information by terminal, the international mobile subscriber identification code IMSI of described terminal is read from described reporting information by terminal, according to the Access Control Policy inquiry prestored in LTE network corresponding to the Access Control authority under the LTE network of described IMSI, authority is used to judge the LTE network of described terminal.
The device of switching between 11. 1 kinds of networks, applies in end side, it is characterised in that including:
Transmitting element, for sending Attach Request message to 2G or 3G network, is attached to 2G or 3G network；
Processing unit, for when receiving attachment and accepting message, receives message based on described attachment and sends PDP activation request to network side；
Switch unit, for asking based on described PDP activation, after moving to LTE network coverage, 2G or 3G network by currently adhering to switch to LTE network,
Wherein, described attachment accepts message based on described Attach Request message, to be network side determine that described terminal is that LTE terminal and having after LTE network uses authority issues, and described attachment accepts to carry in message for indicating described terminal to initiate the field of PDP activation request.
12. devices as claimed in claim 11, it is characterised in that when receiving message initiation PDP activation request based on described attachment, described processing unit is used for:
Receiving after described attachment accepts message, using the access point APN of acquiescence to access given server, and send PDP activation request to described given server；Or,
Receiving after described attachment accepts message, using the APN of acquiescence to access public server, and send PDP activation request to described public server.
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| CN201510008821.4A CN105828403A (en) | 2015-01-08 | 2015-01-08 | Method and device for switching between networks |
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