CN103763746A - Network switching device and network switching method - Google Patents

Network switching device and network switching method Download PDF

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Publication number
CN103763746A
CN103763746A CN201410027750.8A CN201410027750A CN103763746A CN 103763746 A CN103763746 A CN 103763746A CN 201410027750 A CN201410027750 A CN 201410027750A CN 103763746 A CN103763746 A CN 103763746A
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network
terminal
community
described terminal
access information
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CN103763746B (en
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朱峰结
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Abstract

The invention provides a network switching device which comprises an information recording unit, a cell judgment unit and a switching processing unit, wherein the information recording unit is used for recording cells of a first network which is available to a terminal and corresponding cell access information; the cell judgment unit is used for judging whether the current cell of the first network where the terminal is located is recorded or not if the terminal is located in the area which is covered with the first network when the terminal has access to the second network and is in an activated state; the switching processing unit is used for disconnecting data connection built by the terminal when the current cell is recorded and carrying out an operation to switch to the first network by means of the recorded cell access information corresponding to the current cell. The invention further provides a network switching method. According to the technical scheme, network switching can be quickly achieved when the terminal is under an activated state, waiting time of a user is shortened, and user experience is promoted.

Description

Network switching device and method for switching network
Technical field
The present invention relates to mobile communication technology field, in particular to a kind of network switching device and a kind of method for switching network.
Background technology
Cdma network operation commercial city, the whole world evolves to the scheme and strategy of LTE at active research cdma network.In international standard, focus is discussed and is comprised CDMA/LTE voice interoperability scheme and CDMA/LTE data interoperation scheme.At present, CDMA/LTE data interoperation scheme mainly proposes the network architecture based on 3GPP TS23.402, CDMA HRPD wireless network need to be upgraded to eHRPD network, and be accessed EPC core net.
Data interoperation mainly contains and optimize to switch and two kinds of non-optimized switchover schemes, TS23.402 the 8th Zhanghe the 9th chapter respectively normalized definition at non-optimized switchover with optimize E-UTRAN and the two-way switching of eHRPD in handover scheme, comprise that the activated state of E-UTRAN and eHPRD is switched and Idle state switching.Wherein, optimize and switch by realize eHRPD pre-registration process in E-UTRAN network, carry out in advance the preparation of eAT/UE access eHRPD network, but optimize to switch and need in EPC/LTE network, be established to the tunnel of eHRPD network, need to support the interfaces such as interoperability S101 and S103, handoff procedure is completed by network; But not the switching time of optimized network and strategy are determined by UE.
For the network design of CDMA/LTE data interoperation, operator, owing to considering business demand and network equipment cost, does not also have at present operator to adopt and optimizes handover scheme, substantially all adopts unoptimizable handover scheme.And for non-optimized switchover scheme, the agreement schematic diagram of the 3GPP TS36.331RRC layer based on shown in Fig. 1 is known: if the UE in HRPD wants to switch to E-UTRA RRC network and for activated state in activated state (Active), need to wait for that UE enters this intermediateness of the Idle state of E-UTRA RRC network (Idle/IDLE), and then switch to E-UTRA RRC activated state.
For example, if UE is at HRPD or the online displaying video of 3G network for the eHRPD area of coverage, be that UE is in HRPD or eHRPD activated state, so when UE enters the LTE area of coverage, for a long time just switch to possibly LTE network, because existing solution is: after LTE network being detected, if UE judgement is in HRPD or eHRPD activated state, do not switch to LTE network, also use 3G network to continue displaying video, and initiate 3 minutes timer, after timer expiry, go again to judge whether in Idle state, if in Idle state, data service switches to LTE network, if busy state, within 3 minutes, timer starts again, so repeatedly.Be easy to like this to occur, if see video always, half an hour or 1 hour, all can be in 3G states, and other terminal is not owing to having data to download for a long time under LTE network, makes user produce the unsettled illusion of LTE terminal.
Therefore, how the terminal under activated state is carried out to network fast and switch, become technical problem urgently to be resolved hurrily at present.
Summary of the invention
The present invention, just based on the problems referred to above, has proposed a kind of new network handoff technique, can make the terminal under activated state can realize fast network switching, shortens period of reservation of number, promotes user and experiences.
In view of this, the present invention proposes a kind of network switching device, comprising: information recording unit, for recording community and the corresponding community access information of the first network that terminal can use; Community judging unit, for having accessed second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded in described terminal; Switching treatmenting unit, for be recorded in described current area in the situation that, disconnect the data that described terminal set up and connects, and utilize the community access information corresponding to described current area having recorded, and carries out the handover operation to described first network.
In this technical scheme, for being in the terminal of the activated state under second network, by temporary transient turn-off data, connect and switch to community available under first network, without waiting for that terminal is changed to Idle state from activated state, and connect with of short duration turn-off data, make terminal can switch to fast first network, thereby shorten user's stand-by period.
Wherein, the coverage radius of cell of first network can be less than the coverage radius of cell of second network, makes to exist more situation and the possibility to first network execution handover operation by second network; The data transmission bauds of first network can be greater than the data transmission bauds of second network,, when fast mobile terminal is in the overlay area of first network time, has the demand of being switched to first network by second network, to obtain better network service.
Therefore, particularly, first network can be LTE network (corresponding to E-UTRA network), second network can be cdma network (corresponding to HRPD or eHRPD network), thereby pass through technique scheme, the activated state terminal that can realize under cdma network is directly switch into LTE network, and without carrying out waiting as long for based on timer.Certainly,, it will be understood by those skilled in the art that between any two kinds of networks herein and be not used in the particular type that limits first network or second network, obviously can adopt aforesaid way, to realize internetwork quick switching.
In addition, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In technique scheme, preferably, also comprise: timing unit, for be not recorded in described current area in the situation that, starts the timer of Preset Time length; And described switching treatmenting unit also for: after described timer expired, if described terminal still in activated state, disconnects the data that described terminal set up, connect, and carry out the handover operation to described first network.
In this technical scheme, for the community not being recorded, it is registered power and possibly cannot guarantee, by started timer (as 3 minutes before carrying out handover operation, also it can be other shorter or longer times), wait for that terminal is before this timer expired, if can automatically be converted to Idle state from activated state, can avoid because direct turn-off data connects or community registration failure and impact that user is caused; And after timer expired, illustrate terminal at short notice may be always all can be in activated state, thereby connect by temporary transient turn-off data, to realize network rapidly, switch.
Simultaneously, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In above-mentioned arbitrary technical scheme, preferably, also comprise: information acquisition unit, for record the community and corresponding community access information of described first network at described information recording unit before, by in following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network: described terminal is measured the community of described first network; Described terminal is obtained community and the corresponding community access information of described first network from other-end; Described terminal from network side obtains community and the corresponding community access information of described first network.
In this technical scheme, terminal can be measured voluntarily the community of first network and obtain corresponding community access information, also other-end or network side can be come from, thereby community and the corresponding community access information of how available first network can be obtained in a wider context.
Further, the community of the first network obtaining can be that this terminal or other-end were successfully registered, because this terminal or other-end are successfully registered Guo Gai community, show that this community has certain reliability registering on power, reduced to a certain extent the possibility of terminal network handoff failure, the success rate that the network improving switches.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the unit of presorting, the maximum delay allowing for each business of obtaining in advance in described terminal, if described maximum delay is more than or equal to default time delay threshold value, corresponding business is presorted as the low demand business of time delay; Switch control unit, while being the low demand business of described time delay for the current business in described terminal, allowing described switching treatmenting unit to disconnect the data connection that described terminal has been set up, and carries out the handover operation to described first network, otherwise do not allow.
In this technical scheme, the maximum delay that business allows is larger, illustrates that the time delay demand of this business is lower, and the maximum delay that business allows is less, illustrates that the time delay demand of this business is higher.By adopting the business based on time delay demand, presort, make can adopt different network handover schemes for different business, such as for low business of time delay demand such as web page browsings, allow temporary transient turn-off data to connect and realize network to switch, and for high business of time delay demand such as video, games on line, do not allow turn-off data to connect and handover network, to avoid affecting the continuity of user's experience.
In above-mentioned arbitrary technical scheme, preferably, also comprise: intensity acquiring unit, for obtaining the real-time signal strength of described current area; Wherein, described switching treatmenting unit, in the situation that described real-time signal strength is more than or equal to preset strength, is carried out the handover operation to described first network, otherwise is not carried out.
In this technical scheme, by hope being carried out to the real-time signal strength of the Target cell of handover operation, obtain, if signal is weak (real-time signal strength is less than preset strength), may there is the possibility of higher handoff failure, thereby do not carry out handover operation, to avoid affecting user's normal use; If signal is strong (real-time signal strength is more than or equal to preset strength), by carrying out handover operation, to realize the quick switching to network.
The invention allows for a kind of method for switching network, comprising: the community and the corresponding community access information that record the first network that terminal can use; Accessing second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded; If be recorded, disconnect the data connection that described terminal has been set up, and utilize the community access information corresponding to described current area having recorded, carry out the handover operation to described first network.
In this technical scheme, for being in the terminal of the activated state under second network, by temporary transient turn-off data, connect and switch to community available under first network, without waiting for that terminal is changed to Idle state from activated state, and connect with of short duration turn-off data, make terminal can switch to fast first network, thereby shorten user's stand-by period.
Wherein, the coverage radius of cell of first network can be less than the coverage radius of cell of second network, makes to exist more situation and the possibility to first network execution handover operation by second network; The data transmission bauds of first network can be greater than the data transmission bauds of second network,, when fast mobile terminal is in the overlay area of first network time, has the demand of being switched to first network by second network, to obtain better network service.
Therefore, particularly, first network can be LTE network (corresponding to E-UTRA network), second network can be cdma network (corresponding to HRPD or eHRPD network), thereby pass through technique scheme, the activated state terminal that can realize under cdma network is directly switch into LTE network, and without carrying out waiting as long for based on timer.Certainly,, it will be understood by those skilled in the art that between any two kinds of networks herein and be not used in the particular type that limits first network or second network, obviously can adopt aforesaid way, to realize internetwork quick switching.
In addition, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In technique scheme, preferably, also comprise: if described current area is not recorded, start the timer of Preset Time length; After described timer expired, if described terminal still in activated state, disconnects the data connection that described terminal has been set up, and carry out the handover operation to described first network.
In this technical scheme, for the community not being recorded, it is registered power and possibly cannot guarantee, by started timer (as 3 minutes before carrying out handover operation, also it can be other shorter or longer times), wait for that terminal is before this timer expired, if can automatically be converted to Idle state from activated state, can avoid because direct turn-off data connects or community registration failure and impact that user is caused; And after timer expired, illustrate terminal at short notice may be always all can be in activated state, thereby connect by temporary transient turn-off data, to realize network rapidly, switch.
Simultaneously, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In above-mentioned arbitrary technical scheme, preferably, before recording the community and corresponding community access information of described first network, described terminal by following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network: described terminal is measured the community of described first network; Described terminal is obtained community and the corresponding community access information of described first network from other-end; Described terminal from network side obtains community and the corresponding community access information of described first network.
In this technical scheme, terminal can be measured voluntarily the community of first network and obtain corresponding community access information, also other-end or network side can be come from, thereby community and the corresponding community access information of how available first network can be obtained in a wider context.
Further, the community of the first network obtaining can be that this terminal or other-end were successfully registered, because this terminal or other-end are successfully registered Guo Gai community, show that this community has certain reliability registering on power, reduced to a certain extent the possibility of terminal network handoff failure, the success rate that the network improving switches.
In above-mentioned arbitrary technical scheme, preferably, also comprise: obtain in advance the maximum delay that each business in described terminal allows, if described maximum delay is more than or equal to default time delay threshold value, corresponding business is presorted as the low demand business of time delay; If the current business in described terminal is the low demand business of described time delay, allows to disconnect the data connection that described terminal has been set up, and carry out the handover operation to described first network, otherwise do not allow.
In this technical scheme, the maximum delay that business allows is larger, illustrates that the time delay demand of this business is lower, and the maximum delay that business allows is less, illustrates that the time delay demand of this business is higher.By adopting the business based on time delay demand, presort, make can adopt different network handover schemes for different business, such as for low business of time delay demand such as web page browsings, allow temporary transient turn-off data to connect and realize network to switch, and for high business of time delay demand such as video, games on line, do not allow turn-off data to connect and handover network, to avoid affecting the continuity of user's experience.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the real-time signal strength that obtains described current area; If described real-time signal strength is more than or equal to preset strength, carries out the handover operation to described first network, otherwise do not carry out.
In this technical scheme, by hope being carried out to the real-time signal strength of the Target cell of handover operation, obtain, if signal is weak (real-time signal strength is less than preset strength), may there is the possibility of higher handoff failure, thereby do not carry out handover operation, to avoid affecting user's normal use; If signal is strong (real-time signal strength is more than or equal to preset strength), by carrying out handover operation, to realize the quick switching to network.
By above technical scheme, can make the terminal under activated state can realize fast network switching, shorten period of reservation of number, promote user and experience.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram switching between different terminals state in correlation technique;
Fig. 2 shows the schematic block diagram of network switching device according to an embodiment of the invention;
Fig. 3 shows the schematic flow diagram of method for switching network according to an embodiment of the invention;
Fig. 4 shows the schematic flow diagram of quick handover network according to an embodiment of the invention;
Fig. 5 shows the schematic flow diagram of quick handover network according to another embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 2 shows the schematic block diagram of network switching device according to an embodiment of the invention.
As shown in Figure 2, network switching device 200 according to an embodiment of the invention, comprising: information recording unit 202, for recording community and the corresponding community access information of the first network that described terminal can use; Community judging unit 204, for having accessed second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded in described terminal; Switching treatmenting unit 206, for be recorded in described current area in the situation that, disconnect the data that described terminal set up and connects, and utilize the community access information corresponding to described current area having recorded, and carries out the handover operation to described first network.
In this technical scheme, for being in the terminal of the activated state under second network, by temporary transient turn-off data, connect and switch to community available under first network, without waiting for that terminal is changed to Idle state from activated state, and connect with of short duration turn-off data, make terminal can switch to fast first network, thereby shorten user's stand-by period.
Wherein, the coverage radius of cell of first network can be less than the coverage radius of cell of second network, makes to exist more situation and the possibility to first network execution handover operation by second network; The data transmission bauds of first network can be greater than the data transmission bauds of second network,, when fast mobile terminal is in the overlay area of first network time, has the demand of being switched to first network by second network, to obtain better network service.
Therefore, particularly, first network can be LTE network (corresponding to E-UTRA network), second network can be cdma network (corresponding to HRPD or eHRPD network), thereby pass through technique scheme, the activated state terminal that can realize under cdma network is directly switch into LTE network, and without carrying out waiting as long for based on timer.Certainly,, it will be understood by those skilled in the art that between any two kinds of networks herein and be not used in the particular type that limits first network or second network, obviously can adopt aforesaid way, to realize internetwork quick switching.
In addition, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In technique scheme, preferably, also comprise: timing unit 208, for be not recorded in described current area in the situation that, starts the timer of Preset Time length; And described switching treatmenting unit 206 also for: after described timer expired, if described terminal still in activated state, disconnects the data that described terminal set up, connect, and carry out the handover operation to described first network.
In this technical scheme, for the community not being recorded, it is registered power and possibly cannot guarantee, by started timer (as 3 minutes before carrying out handover operation, also it can be other shorter or longer times), wait for that terminal is before this timer expired, if can automatically be converted to Idle state from activated state, can avoid because direct turn-off data connects or community registration failure and impact that user is caused; And after timer expired, illustrate terminal at short notice may be always all can be in activated state, thereby connect by temporary transient turn-off data, to realize network rapidly, switch.
Simultaneously, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
In above-mentioned arbitrary technical scheme, preferably, described switching treatmenting unit 206 is for initiating the attach operation to described first network, and in the successful situation of described attach operation, initiation is to the data service dialing operation of described first network.
In this technical scheme, after being successfully attached to first network, directly to first network, initiate data service dialing operation, thereby the data of recovering as far as possible to be rapidly disconnected connect, to reduce the impact that user is used.
In technique scheme, preferably, described switching treatmenting unit 206 also for: described attach operation or the described data service dialing operation failure in the situation that, again switch back described second network.
In this technical scheme, no matter whether the community of first network was recorded, and all may exist and adhere to failure or adhere to the possibility that rear dialing is failed, thereby when the data that cannot recover to be disconnected connect, all should again switch back second network, to reduce the impact that user is used.
Certainly, the data service dialing operation of terminal for the attach operation of first network or after adhering to successfully can be all one or many, to avoid the reasons such as unstable networks once in a while to cause certain attach operation or data service dialing operation failure, reduce the possibility that accidentalia causes network handoff failure.
In above-mentioned arbitrary technical scheme, preferably, also comprise: information acquisition unit 210, for record the community and corresponding community access information of described first network at described information recording unit before, by in following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network: described terminal is measured the community of described first network; Described terminal is obtained community and the corresponding community access information of described first network from other-end; Described terminal from network side obtains community and the corresponding community access information of described first network.
In this technical scheme, terminal can be measured voluntarily the community of first network and obtain corresponding community access information, also other-end or network side can be come from, thereby community and the corresponding community access information of how available first network can be obtained in a wider context.
Further, the community of the first network obtaining can be that this terminal or other-end were successfully registered, because this terminal or other-end are successfully registered Guo Gai community, show that this community has certain reliability registering on power, reduced to a certain extent the possibility of terminal network handoff failure, the success rate that the network improving switches.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the unit 212 of presorting, the maximum delay allowing for each business of obtaining in advance in described terminal, if described maximum delay is more than or equal to default time delay threshold value, corresponding business is presorted as the low demand business of time delay; Switch control unit 214, while being the low demand business of described time delay for the current business in described terminal, allow described switching treatmenting unit 206 to disconnect the data connection that described terminal has been set up, and carry out the handover operation to described first network, otherwise do not allow.
In this technical scheme, the maximum delay that business allows is larger, illustrates that the time delay demand of this business is lower, and the maximum delay that business allows is less, illustrates that the time delay demand of this business is higher.By adopting the business based on time delay demand, presort, make can adopt different network handover schemes for different business, such as for low business of time delay demand such as web page browsings, allow temporary transient turn-off data to connect and realize network to switch, and for high business of time delay demand such as video, games on line, do not allow turn-off data to connect and handover network, to avoid affecting the continuity of user's experience.
In above-mentioned arbitrary technical scheme, preferably, also comprise: intensity acquiring unit 216, for obtaining the real-time signal strength of described current area; Wherein, described switching treatmenting unit 206, in the situation that described real-time signal strength is more than or equal to preset strength, is carried out the handover operation to described first network, otherwise is not carried out.
In this technical scheme, by hope being carried out to the real-time signal strength of the Target cell of handover operation, obtain, if signal is weak (real-time signal strength is less than preset strength), may there is the possibility of higher handoff failure, thereby do not carry out handover operation, to avoid affecting user's normal use; If signal is strong (real-time signal strength is more than or equal to preset strength), by carrying out handover operation, to realize the quick switching to network.
Below in conjunction with Fig. 3 to Fig. 5, technical scheme of the present invention is carried out to explanation further.
Fig. 3 shows the schematic flow diagram of method for switching network according to an embodiment of the invention.
As shown in Figure 3, method for switching network according to an embodiment of the invention, comprising:
Step 302, records community and the corresponding community access information of the first network that terminal can use;
Step 304, is accessing second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded;
Step 306, if be recorded, disconnect the data connection that described terminal has been set up, and utilizes the community access information corresponding to described current area having recorded, and carries out the handover operation to described first network.
In this technical scheme, for being in the terminal of the activated state under second network, by temporary transient turn-off data, connect and switch to community available under first network, without waiting for that terminal is changed to Idle state from activated state, and connect with of short duration turn-off data, make terminal can switch to fast first network, thereby shorten user's stand-by period.
Wherein, the coverage radius of cell of first network can be less than the coverage radius of cell of second network, makes to exist more situation and the possibility to first network execution handover operation by second network; The data transmission bauds of first network can be greater than the data transmission bauds of second network,, when fast mobile terminal is in the overlay area of first network time, has the demand of being switched to first network by second network, to obtain better network service.
Therefore, particularly, first network can be LTE network (corresponding to E-UTRA network), second network can be cdma network (corresponding to HRPD or eHRPD network), thereby pass through technique scheme, the activated state terminal that can realize under cdma network is directly switch into LTE network, and without carrying out waiting as long for based on timer.Certainly,, it will be understood by those skilled in the art that between any two kinds of networks herein and be not used in the particular type that limits first network or second network, obviously can adopt aforesaid way, to realize internetwork quick switching.
In addition, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
Certainly, because current area might not be recorded, if described current area is not recorded, start the timer of Preset Time length; After described timer expired, if described terminal still in activated state, disconnects the data connection that described terminal has been set up, and carry out the handover operation to described first network.
In this technical scheme, for the community not being recorded, it is registered power and possibly cannot guarantee, by started timer (as 3 minutes before carrying out handover operation, also it can be other shorter or longer times), wait for that terminal is before this timer expired, if can automatically be converted to Idle state from activated state, can avoid because direct turn-off data connects or community registration failure and impact that user is caused; And after timer expired, illustrate terminal at short notice may be always all can be in activated state, thereby connect by temporary transient turn-off data, to realize network rapidly, switch.
Simultaneously, when handover operation failure that terminal is carried out to first network, can return to second network and the data recovering to be disconnected connect, or when terminal successful switch is to first network, also the data that should immediate recovery be disconnected connect, to reduce as far as possible the interference to user.
Wherein, no matter whether current area is recorded, and, when the terminal of the activated state in second network wishes to carry out handover operation to first network, this handover operation specifically can comprise:
1) initiate the attach operation to described first network; And
2), in the successful situation of described attach operation, initiate the data service dialing operation to described first network.
Certainly, if the switching object between only Network Based, this handover operation only comprises step 1), first network is adhered to (Attach) operation; If be forced to and wish to continue terminal the data service disconnecting, can further perform step 2), to reducing the impact of user being used to operation.
Certainly, might not be successful to the handover operation of first network, specifically comprise as step 1) failure, or step 1) success but step 2) failure, make in a word user cannot continue to carry out the data service being disconnected, preferably, also comprise: when described attach operation or described data service dialing operation failure, again switch back described second network.
In this technical scheme, no matter whether the community of first network was recorded, and all may exist and adhere to failure or adhere to the possibility that rear dialing is failed, thereby when the data that cannot recover to be disconnected connect, all should again switch back second network, to reduce the impact that user is used.
Certainly, the data service dialing operation of terminal for the attach operation of first network or after adhering to successfully can be all one or many, to avoid the reasons such as unstable networks once in a while to cause certain attach operation or data service dialing operation failure, reduce the possibility that accidentalia causes network handoff failure.
In above-mentioned arbitrary technical scheme, preferably, before recording the community and corresponding community access information of described first network, described terminal by following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network: described terminal is measured the community of described first network; Described terminal is obtained community and the corresponding community access information of described first network from other-end; Described terminal from network side obtains community and the corresponding community access information of described first network.
In this technical scheme, terminal can be measured voluntarily the community of first network and obtain corresponding community access information, also other-end or network side can be come from, thereby community and the corresponding community access information of how available first network can be obtained in a wider context.
Further, the community of the first network obtaining can be that this terminal or other-end were successfully registered, because this terminal or other-end are successfully registered Guo Gai community, show that this community has certain reliability registering on power, reduced to a certain extent the possibility of terminal network handoff failure, the success rate that the network improving switches.
In above-mentioned arbitrary technical scheme, preferably, also comprise: obtain in advance the maximum delay that each business in described terminal allows, if described maximum delay is more than or equal to default time delay threshold value, corresponding business is presorted as the low demand business of time delay; If the current business in described terminal is the low demand business of described time delay, allows to disconnect the data connection that described terminal has been set up, and carry out the handover operation to described first network, otherwise do not allow.
In this technical scheme, the maximum delay that business allows is larger, illustrates that the time delay demand of this business is lower, and the maximum delay that business allows is less, illustrates that the time delay demand of this business is higher.By adopting the business based on time delay demand, presort, make can adopt different network handover schemes for different business, such as for low business of time delay demand such as web page browsings, allow temporary transient turn-off data to connect and realize network to switch, and for high business of time delay demand such as video, games on line, do not allow turn-off data to connect and handover network, to avoid affecting the continuity of user's experience.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the real-time signal strength that obtains described current area; If described real-time signal strength is more than or equal to preset strength, carries out the handover operation to described first network, otherwise do not carry out.
In this technical scheme, by hope being carried out to the real-time signal strength of the Target cell of handover operation, obtain, if signal is weak (real-time signal strength is less than preset strength), may there is the possibility of higher handoff failure, thereby do not carry out handover operation, to avoid affecting user's normal use; If signal is strong (real-time signal strength is more than or equal to preset strength), by carrying out handover operation, to realize the quick switching to network.
Fig. 4 shows the schematic flow diagram of quick handover network according to an embodiment of the invention.
As shown in Figure 4, the process of quick handover network according to an embodiment of the invention comprises:
Step 402, UE enters the 4G area of coverage, such as the area of coverage of LTE network.
Step 404, the state of judgement UE, if Idle state directly enters step 412, realizes network and switches, otherwise enter step 406.
Step 406, for the UE that is in eHRPD activated state, obtains the information of the residing current 4G of UE community.
Step 408, judges whether current 4G community is recorded.
Particularly, can realize and in UE, increase a file LTEAvailableFile, this document is used for storing the LTE cell information that several (such as 50) UE successfully registered, and the information content includes but not limited to SID, NID, BID, PCI etc., for identifying available LTE community.UE is when each start, all above-mentioned file LTEAvailableFile is read out in memory variable list LTEAvailableList, for comparing with the cell information of Real-time Obtaining, such as now current 4G community and LTEAvailableList list being compared, to determine whether this current 4G community is recorded.Wherein, if be recorded, enter step 410, otherwise enter step 414.
Step 410, disconnects the data service of UE.
Step 412, initiates the handover operation to 4G network, thereby expectation is by the temporary transient disconnection to data service, realizes the quick switching to 4G network.
Step 414, starts timer, such as regularly 3 minutes or other times.
Step 416, until after timer expiry, enter step 410.
Step 418, whether successful switch is to 4G network to judge UE.
Step 420, if UE handover success, if current 4G community had not previously been recorded, carries out record to it, restarts timer when avoiding entering this community next time, thereby accelerates to carry out next time the speed that network switches.
Certainly, no matter whether current 4G community is recorded, UE is process ends directly, or the data service that further recovery is disconnected in step 410 in time, to reduce the impact on user.
Step 422, if UE handoff failure, for fear of the impact on user, can switch back 3G network in time.Wherein, further, can initiate in time the dialing under 3G network, the data service being disconnected with recovering step 410.
Technical scheme based on shown in Fig. 4, the invention allows for further improvement, and particularly, Fig. 5 shows the schematic flow diagram of quick handover network according to another embodiment of the invention.
As shown in Figure 5, the process of quick handover network according to another embodiment of the invention comprises:
Step 502, UE prepares to carry out by 3G network the handover operation to 4G network.
Before should " prepare carry out " can comprising the step 410 in embodiment illustrated in fig. 4.Particularly, after can judging in step 408 that current 4G community is recorded, or after step 416 timer expiry; Certainly, it will be understood by those skilled in the art that this " prepares to carry out " can be obviously also the position of other in flow process shown in Fig. 4, can arrange and adjust according to actual conditions.
Step 504, obtains the signal strength signal intensity Q1 of current 4G community.
Step 506, judges the magnitude relationship of signal strength signal intensity Q1 and the default signal strength threshold Qt of current 4G community, if Q1 is less than Qt, does not carry out network handover operation; If Q1 is more than or equal to Qt, enter step 508.
Step 508, carries out by 3G network the handover operation to 4G network.
In the embodiment shown in Fig. 4 and Fig. 5, the handoff procedure of take between 3G and 4G network is example, and technical scheme of the present invention has been described; Yet, those skilled in the art should understand that: between other any two networks, obviously can pass through which, to realize network fast, switch.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of terminal and a kind of method for switching network, can make the terminal under activated state can realize fast network switching, shortened period of reservation of number, promoted user and experience.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. a network switching device, is characterized in that, comprising:
Information recording unit, for recording community and the corresponding community access information of the first network that terminal can use;
Community judging unit, for having accessed second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded in described terminal;
Switching treatmenting unit, for be recorded in described current area in the situation that, disconnect the data that described terminal set up and connects, and utilize the community access information corresponding to described current area having recorded, and carries out the handover operation to described first network.
2. network switching device according to claim 1, is characterized in that, also comprises:
Timing unit, for be not recorded in described current area in the situation that, starts the timer of Preset Time length; And
Described switching treatmenting unit also for: after described timer expired, if described terminal still in activated state, disconnects the data that described terminal set up, connect, and carry out the handover operation to described first network.
3. network switching device according to claim 1 and 2, is characterized in that, also comprises:
Information acquisition unit, for record the community and corresponding community access information of described first network at described information recording unit before, by in following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network:
Described terminal is measured the community of described first network;
Described terminal is obtained community and the corresponding community access information of described first network from other-end;
Described terminal from network side obtains community and the corresponding community access information of described first network.
4. network switching device according to claim 1 and 2, is characterized in that, also comprises:
The unit of presorting, the maximum delay allowing for each business of obtaining in advance in described terminal, if described maximum delay is more than or equal to default time delay threshold value, presorts corresponding business as the low demand business of time delay;
Switch control unit, while being the low demand business of described time delay for the current business in described terminal, allowing described switching treatmenting unit to disconnect the data connection that described terminal has been set up, and carries out the handover operation to described first network, otherwise do not allow.
5. network switching device according to claim 1 and 2, is characterized in that, also comprises:
Intensity acquiring unit, for obtaining the real-time signal strength of described current area;
Wherein, described switching treatmenting unit, in the situation that described real-time signal strength is more than or equal to preset strength, is carried out the handover operation to described first network, otherwise is not carried out.
6. a method for switching network, is characterized in that, comprising:
Record community and the corresponding community access information of the first network that terminal can use;
Accessing second network and in activated state in the situation that, if the overlay area of described terminal in described first network judges whether the current area of the residing described first network of described terminal is recorded;
If be recorded, disconnect the data connection that described terminal has been set up, and utilize the community access information corresponding to described current area having recorded, carry out the handover operation to described first network.
7. method for switching network according to claim 6, is characterized in that, also comprises:
If described current area is not recorded, start the timer of Preset Time length;
After described timer expired, if described terminal still in activated state, disconnects the data connection that described terminal has been set up, and carry out the handover operation to described first network.
8. according to the method for switching network described in claim 6 or 7, it is characterized in that, before recording the community and corresponding community access information of described first network, described terminal by following manner at least one or a combination set of, to obtain community and the corresponding community access information of described first network:
Described terminal is measured the community of described first network;
Described terminal is obtained community and the corresponding community access information of described first network from other-end;
Described terminal from network side obtains community and the corresponding community access information of described first network.
9. according to the method for switching network described in claim 6 or 7, it is characterized in that, also comprise:
Obtain in advance the maximum delay that each business in described terminal allows, if described maximum delay is more than or equal to default time delay threshold value, corresponding business is presorted as the low demand business of time delay;
If the current business in described terminal is the low demand business of described time delay, allows to disconnect the data connection that described terminal has been set up, and carry out the handover operation to described first network, otherwise do not allow.
10. according to the method for switching network described in claim 6 or 7, it is characterized in that, also comprise:
Obtain the real-time signal strength of described current area;
If described real-time signal strength is more than or equal to preset strength, carries out the handover operation to described first network, otherwise do not carry out.
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