CN102752824B - Different-system switching method and device - Google Patents

Different-system switching method and device Download PDF

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CN102752824B
CN102752824B CN201210227064.6A CN201210227064A CN102752824B CN 102752824 B CN102752824 B CN 102752824B CN 201210227064 A CN201210227064 A CN 201210227064A CN 102752824 B CN102752824 B CN 102752824B
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network
target cell
service priority
terminal
threshold value
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CN102752824A (en
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胡泽妍
盛煜
仪鲁男
路玮
吕召彪
王健全
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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Abstract

The invention provides a kind of different-system switching method and device, comprising: the network insertion request obtaining terminal access first network; According to described network insertion request, obtain the load information of Target cell in first network; When judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell.When the service priority of terminal is higher when offered load is comparatively large, by again terminal being accessed the mode of first network after edge customer is switched to second network, optimizes the handover scheme of different systematic evaluation, improving network resource usage effect.

Description

Different-system switching method and device
Technical field
The present invention relates to wireless network communication technique, particularly relate to a kind of different-system switching method and device.
Background technology
Different systematic evaluation refers to the existing network boundary of terminal cross, and business is switched to another network by a network, utilizes the network after switching to go to manage current business after network has switched.Such as, at Long Term Evolution (Long Term Evolution, be called for short LTE) and global system for mobile communications (Global System for Mobile Communications, be called for short GSM) or universal mobile telecommunications system (Universal Mobile Telecommunications System, be called for short UMTS) in the network that coexists, when terminal is in connected state and has business to carry out, in order to keep the communication quality of terminal, terminal will be switched to the target BS of the better LTE network of signal quality from the source base station of GSM/UMTS network.
Switching between different system is a key technology of future mobile communications development, is mainly divided into three parts: handover trigger, switch decision and switching perform.Wherein, handover trigger is exactly that network selection is carried out in terminal triggering, and switch decision is exactly select the network measured thus determine objective network, and switching execution is exactly the process performing switching.In prior art, terminal triggers carries out network selection, and base station side for Rule of judgment, performs different systematic evaluation with the signal quality of the adjacent cell of terminal to report.
But the judgement standard of base station side only using signal quality as switching in prior art, if the Target cell load after switching is larger, so again user is switched to this Target cell, Target cell loading level can be caused excessive, reduce the business experience of user on the contrary.
Summary of the invention
The embodiment of the present invention provides a kind of different-system switching method and device, to optimize the handover scheme of different systematic evaluation, improves network resource usage effect.
The embodiment of the present invention provides a kind of different-system switching method, comprising:
Obtain the network insertion request of terminal access first network;
According to described network insertion request, obtain the load information of Target cell in first network;
When judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell.
The embodiment of the present invention provides a kind of different system switching device, comprising:
Acquisition request module, for obtaining the network insertion request of terminal access first network;
Load acquisition module, for according to described network insertion request, obtains the load information of Target cell in first network;
Cell merge module, for when judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell.
The method and apparatus that the embodiment of the present invention provides, according to the network insertion request of user, obtain the load information of Target cell in first network, when judging that in first network, the load information of Target cell exceeds load-threshold value, whether the further service priority judging terminal is higher than the service priority of first network Target cell edge customer, if then edge customer is switched to second network, terminal is accessed first network.Because community is when maintaining the business of edge customer, need to pay larger Internet resources, therefore when when offered load is comparatively large, the service priority of terminal is higher, by again terminal being accessed the mode of first network after edge customer is switched to second network, both ensure that the terminal with high service priority can the better first network of access network performance, the load of first network Target cell has been increased the weight of further after preventing again terminal to access, thus optimize the handover scheme of different systematic evaluation, improve network resource usage effect.
Accompanying drawing explanation
Fig. 1 is different-system switching method first embodiment flow chart of the present invention;
Fig. 2 is different-system switching method second embodiment flow chart of the present invention;
Fig. 3 is the present invention's different system switching device first example structure schematic diagram;
Fig. 4 is the present invention's different system switching device first example structure schematic diagram.
Embodiment
Fig. 1 is different-system switching method first embodiment flow chart of the present invention, as shown in Figure 1, the different-system switching method that the embodiment of the present invention provides is performed by different system switching device, different system switching device is arranged between first network core net and second network core net, by first network and second network public.Terminal is switched to the Target cell of the Internet resources more first network of high-quality from the cell-of-origin of second network.Different system switching device can adopt the form of software and/or hardware to realize, and the method comprises:
Step S100, obtains the network insertion request of terminal access first network;
Being in the terminal of connected state in second network, when the business of initiation, in order to obtain more excellent Internet resources, sending network insertion request to different system switching device, request access first network.
In a preferred embodiment, first network is Long Term Evolution (Long Term Evolution, be called for short LTE) network, second network is high-speed packet access (High Speed Packet Access, be called for short HSPA) network, wherein HSPA network belongs to UMTS network system, be WCDMA network in performance and enhancing functionally, be the evolvement network of WCDMA network.Particularly, under the network environment that LTE network and HSPA network cover altogether, LTE network is that focus covers, and HSPA network is cover continuously, and first starting up of terminal accesses the cell-of-origin of HSPA network after starting, now terminal is in connected state.When terminal originating service, in order to obtain more excellent Internet resources, terminal sends network insertion request to different system switching device, request access LTE network.
Step S102, according to described network insertion request, obtains the load information of Target cell in first network;
It should be noted that, the terminal being in connected state in the second network, by network insertion request, via the base station of second network, is sent to the core net of second network.This network insertion request is sent to different system switching device by the core net of second network.Because different system switching device is connected to the core net of first network and the core net of second network simultaneously, different system switching device according to this network insertion request, by getting the load information of Target cell in the core net of first network.Different system switching device is according to network insertion request, send Survey control message to terminal, Survey control message comprises the information such as measuring object, measuring amount, measurement report criterion, measuring object is the community of the first network that terminal surrounding can be accessed by, measuring amount is the network performance parameter of first network community, as received cell signal strength, receiving cell signal quality etc.; Terminal according to the instruction of Survey control message, is measured measuring object after receiving Survey control message, and sends the measurement report of first network community to different system switching device.
In a preferred embodiment, different system switching device judges whether the signal strength signal intensity of first network community is greater than signal threshold value, signal strength signal intensity is greater than the accessible first network community of signal threshold value as Target cell.
Different system switching device, according to measurement report, obtains the load information of Target cell from core net.Particularly, load information can be represented by the utilance of Physical Resource Block, i.e. the Physical Resource Block of the current use in Target cell and system assignment give the ratio of the Physical Resource Block number of this community.
Step S104, when judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell.After different system switching device obtains the load information of Target cell, judge whether the load information of Target cell exceeds default load-threshold value, the load-threshold value wherein preset according to actual demand, can set according to network practical capacity and network O&M situation.
If the load information of Target cell is greater than default load-threshold value, different system switching device obtains the service priority of edge customer Target cell from base station side, judges that the service priority of terminal is whether higher than the service priority of Target cell edge customer further.Wherein service priority refers to that operator defines different priority according to the marketing strategy of self to different business.Edge customer refers in business is carried out, upload or downloading rate (data service throughput) lower than the user of normality threshold.
If the service priority of terminal is higher than the service priority of edge customer in Target cell, then the edge customer of service priority low in first network Target cell is switched in the community of second network, and terminal is accessed first network Target cell.
In the technical scheme of the present embodiment, different system switching device is according to the network insertion request of user, obtain the load information of Target cell in first network, when judging that in first network, the load information of Target cell exceeds load-threshold value, whether the further service priority judging terminal is higher than the service priority of first network Target cell edge customer, if then edge customer is switched to second network, terminal is accessed first network.Because community is when maintaining the business of edge customer, need to pay larger Internet resources, therefore when when offered load is comparatively large, the service priority of terminal is higher, by again terminal being accessed the mode of first network after edge customer is switched to second network, both ensure that the terminal with high service priority can the better first network of access network performance, after preventing again terminal to access, increased the weight of the load of first network Target cell further.
Fig. 2 is different-system switching method second embodiment flow chart of the present invention, and as shown in Figure 2, the executive agent of this embodiment is different system switching device, and the method comprises:
Step S200, obtains the network insertion request of terminal access first network;
Step S202, according to described network insertion request, obtains the load information of Target cell in first network;
The handling process embodiment shown in Figure 1 of step S200 and step S202, the Target cell in the first network that terminal can be accessed by may have multiple.
Step S204, judges whether the load information of each Target cell exceeds normal load threshold value;
Enter step S206 if not, if enter step S208.
Different system switching device, according to network insertion request, sends Survey control message to terminal, after terminal receives Survey control message, according to the instruction of Survey control message, returns the measurement report of first network community to different system switching device.This measurement report comprises the Target cell of the first network that this terminal can be accessed by.Be sequencing according to the signal strength signal intensity of each Target cell, judge whether the load information of each Target cell exceeds normal load threshold value one by one, if find to there is the Target cell not exceeding normal load threshold value, then directly enter step S206, no longer judge other Target cells.
Step S206, terminal is accessed this Target cell, flow process terminates.
Load information when normal load threshold value refers to that the load state of Target cell is in normal condition.When the load information of Target cell exceeds normal load threshold value, illustrate that Target cell is comparatively busy at present, accessed more terminal; During lower than normal load threshold value, illustrate that Target cell is comparatively idle at present, the terminal of access is less, now directly terminal can be accessed this Target cell, can not cause this Target cell overload, flow process terminates, and no longer continues the load information judging other Target cells.After judging one by one, the load information of each Target cell is all greater than normal load threshold value, then enter step S208.
Step S208, judges whether the load information of each Target cell exceeds light loads threshold value;
If enter step S210, enter step S212 if not.
Step S210, switches to second network by edge customer lower for service priority in Target cell;
Step S212, adds alternative cell list by the Target cell not exceeding light loads threshold value;
When the load information of each Target cell is greater than normal load threshold value, judge whether the load information of each Target cell exceeds light loads threshold value further.Load information when light loads threshold value refers to that Target cell is in heavy duty, light loads threshold value is greater than normal load threshold value.The load information of Target cell is greater than normal load threshold value when being less than light loads threshold value, illustrates that Target cell is comparatively busy at present, but still reaches heavy duty; When the load information of Target cell is greater than light loads threshold value, illustrate that Target cell reaches heavy duty, what the terminal of access had reached Target cell can the maximum of load, if continue the new terminal of access, Target cell overload can be caused, affect terminal traffic quality.
When judging that the load information of certain Target cell exceeds light loads threshold value, because community is when maintaining the business of edge customer, needing the Internet resources of at substantial, therefore in order to alleviate the load of this Target cell, the edge customer of this Target cell being switched to second network.
The Target cell not exceeding light loads threshold value is added alternative cell list, therefore alternative cell list refers to what terminal can access, the Target cell of load information between normal load threshold value and light loads threshold value, in the list of alternative cell, Target cell may have multiple.
Further, if the load information of all Target cells is all greater than light loads threshold value, then increase described normal load threshold value and/or light loads threshold value.
Step S214, the service priority of the edge customer of each described Target cell in the service priority of more described terminal and the list of described alternative cell;
When service priority higher than edge customer of the service priority of terminal, enter step S216.
Step S216, switches in the community of second network by described edge customer, described terminal is accessed in the described Target cell of the former ownership of described edge customer.
The service priority of the edge customer of each Target cell in the service priority of terminal and alternative cell list is compared.When service priority all higher than terminal of the service priority of all edge customers of certain Target cell, choose next Target cell in the list of alternative cell to compare, until find service priority lower than the edge customer of terminal traffic priority, and this edge customer is switched to second network to alleviate the load of this Target cell, and then terminal is accessed in the Target cell of the former ownership of this edge customer.
Further, when service priority not higher than all edge customers of the service priority of terminal, the network insertion request of refusal terminal access first network.
In the technical scheme of the present embodiment, different system switching device is according to the network insertion request of user, obtain the load information of Target cell in first network, if there is idle Target cell, directly access, if each Target cell all exceeds normal load, then judge whether to there is underloaded Target cell further, illustrate that now first network load is very heavy if do not exist, new user can not be accessed, and the more edge customer of consumes resources should be reduced, to alleviate the present load of first network; If there is underloaded Target cell, then judge that the service priority of terminal is whether higher than the service priority of first network Target cell edge customer, if then edge customer is switched to second network, accesses first network by terminal further.Therefore when when Target cell is in underload, the service priority of terminal is higher, ensure that the terminal with high service priority can the better first network of access network performance, the load of first network Target cell has been increased the weight of further after preventing again terminal to access, by considering the service priority of offered load and terminal, reach and can either make full use of high-quality Internet resources, balance again the object of offered load, thus optimize the handover scheme of different systematic evaluation, improve network resource usage effect.
Fig. 3 is the present invention's different system switching device first example structure schematic diagram, and as shown in Figure 3, this device comprises: acquisition request module 10, load acquisition module 12, cell merge module 14, wherein:
Acquisition request module 10, for obtaining the network insertion request of terminal access first network, sends network insertion request to load acquisition module 12; Load acquisition module 12, for according to described network insertion request, obtains the load information of Target cell in first network, the load information of Target cell is sent to cell merge module 14; Cell merge module 14, for when judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell.
Particularly, acquisition request module 10 receives the network insertion request that in second network, terminal sends, request access first network.This network insertion request is sent to load acquisition module 12 by acquisition request module 10, load acquisition module 12 is according to network insertion request, send Survey control message to terminal, terminal, according to the instruction of Survey control message, returns the Target cell measurement report of first network to load acquisition module 12.Load acquisition module 12 obtains the load information of Target cell according to measurement report from core net, and is sent to cell merge module 14.Cell merge module 14 judges whether the load information of Target cell exceeds default load-threshold value, if then judge that the service priority of terminal is whether higher than the service priority of Target cell edge customer further.If then the edge customer of service priority lower than terminal traffic priority is switched in the community of second network, and terminal is accessed this Target cell.
The different-system switching method that the different system switching device that various embodiments of the present invention provide provides for performing the embodiment of the present invention, possesses corresponding functional module.
In the technical scheme of the present embodiment, different system switching device is according to the network insertion request of user, obtain the load information of Target cell in first network, when judging that in first network, the load information of Target cell exceeds load-threshold value, whether the further service priority judging terminal is higher than the service priority of first network Target cell edge customer, if then edge customer is switched to second network, terminal is accessed first network.Because community is when maintaining the business of edge customer, need to pay larger Internet resources, therefore when when offered load is comparatively large, the service priority of terminal is higher, by again terminal being accessed the mode of first network after edge customer is switched to second network, both ensure that the terminal with high service priority can the better first network of access network performance, the load of first network Target cell has been increased the weight of further after preventing again terminal to access, thus optimize the handover scheme of different systematic evaluation, improve network resource usage effect.
Fig. 4 is the present invention's different system switching device first example structure schematic diagram, as shown in Figure 4, this device comprises: acquisition request module 20, load acquisition module 22, cell merge module 24, cell merge module 24 comprises: the first judging unit 241, alternative cell list generation unit 242, comparing unit 243 and the first switch unit 244.
Acquisition request module 20 is identical with functional module embodiment illustrated in fig. 3 with the functional realiey mode of load acquisition module 22, repeats no more herein.
First judging unit 241, for when judging that the load information of described Target cell exceeds normal load threshold value, judges whether the load information of described Target cell exceeds light loads threshold value; Alternative cell list generation unit 242, for when judging that the load information of described Target cell does not exceed light loads threshold value, adds alternative cell list by the Target cell not exceeding light loads threshold value; Comparing unit 243, for the service priority of the edge customer of Target cell described in the service priority of more described terminal and the list of described alternative cell; First switch unit 244, for when service priority higher than described edge customer of the service priority of described terminal, described edge customer is switched in the community of second network, described terminal is accessed in the described Target cell of the former ownership of described edge customer.
Particularly, first judging unit 241 judges whether the load information that terminal can be accessed by each Target cell of first network exceeds normal load threshold value, if then judge whether the load information of Target cell exceeds light loads threshold value further, the Target cell being greater than normal load threshold value and being less than light loads threshold value is sent to alternative cell list generation unit 242, the Target cell not exceeding light loads threshold value is added alternative cell list by alternative cell list generation unit 242, and this alternative cell list is sent to comparing unit 243; The service priority of the edge customer of Target cell in the service priority of terminal and alternative cell list compares by comparing unit 243, if there is the edge customer of service priority lower than terminal traffic priority, then this edge customer is switched to second network, this terminal is accessed in the Target cell of the first network of this edge customer unit ownership.
Further, first judging unit 241 also comprises the second switch unit 2411, for when judging that the load information of this Target cell exceeds light loads threshold value, edge customer lower for service priority in this Target cell is switched in the community of second network.
Further, the first judging unit 241 also comprises the 3rd switch unit 2412, for when judging that the load information of Target cell does not exceed normal load threshold value, terminal is accessed this Target cell.
Further, alternative cell list generation unit 242 also comprises thresholding adjustment unit 2421, for when Target cell quantity is zero in the list of alternative cell, increases normal load threshold value and/or light loads threshold value.
Further, cell merge module also comprises refusal access unit 245, for when the service priority of edge customer during the service priority of terminal is not higher than all Target cells, refuses the network insertion request that this terminal accesses first network.
The different-system switching method that the different system switching device that various embodiments of the present invention provide provides for performing the embodiment of the present invention, possesses corresponding functional module.
In the technical scheme of the present embodiment, different system switching device is according to the network insertion request of user, obtain the load information of Target cell in first network, if there is idle Target cell, directly access, if each Target cell all exceeds normal load, then judge whether to there is underloaded Target cell further, illustrate that now first network load is very heavy if do not exist, new user can not be accessed, and the more edge customer of consumes resources should be reduced, to alleviate the present load of first network; If there is underloaded Target cell, then judge that the service priority of terminal is whether higher than the service priority of first network Target cell edge customer, if then edge customer is switched to second network, accesses first network by terminal further.Therefore when when Target cell is in underload, the service priority of terminal is higher, ensure that the terminal with high service priority can the better first network of access network performance, the load of first network Target cell has been increased the weight of further after preventing again terminal to access, by considering the service priority of offered load and terminal, reach and can either make full use of high-quality Internet resources, balance again the object of offered load, thus optimize the handover scheme of different systematic evaluation, improve network resource usage effect.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (8)

1. a different-system switching method, is characterized in that, comprising:
Obtain the network insertion request of terminal access first network;
According to described network insertion request, obtain the load information of Target cell in first network;
When judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell;
Wherein, when judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell and comprises:
When judging that the load information of described Target cell exceeds normal load threshold value, judge whether the load information of described Target cell exceeds light loads threshold value;
When judging that the load information of described Target cell does not exceed light loads threshold value, the Target cell not exceeding light loads threshold value is added alternative cell list;
The service priority of the edge customer of Target cell described in the service priority of more described terminal and the list of described alternative cell;
When service priority higher than described edge customer of the service priority of described terminal, described edge customer is switched in the community of second network, described terminal is accessed in the described Target cell of the former ownership of described edge customer;
When in the list of alternative cell, Target cell quantity is zero, also comprise:
Increase described normal load threshold value and/or light loads threshold value.
2. different-system switching method according to claim 1, is characterized in that, after judging whether the load information of described Target cell exceeds light loads threshold value, also comprises:
When judging that the load information of described Target cell exceeds light loads threshold value, edge customer lower for service priority in described Target cell is switched in the community of second network.
3. different-system switching method according to claim 1, is characterized in that, in the service priority and described Target cell of more described terminal edge customer service priority after, also comprise:
When service priority not higher than described edge customer of the service priority of described terminal, refuse the described network insertion request that described terminal accesses described first network.
4., according to the arbitrary described different-system switching method of claim 1-3, it is characterized in that: described first network is LTE network, described second network is HSPA network.
5. a different system switching device, is characterized in that, comprising:
Acquisition request module, for obtaining the network insertion request of terminal access first network;
Load acquisition module, for according to described network insertion request, obtains the load information of Target cell in first network;
Cell merge module, for when judging that the load information of described Target cell exceeds load-threshold value, according to the service priority of edge customer in the service priority of described terminal and described Target cell, the edge customer with low service priority is switched to the community of second network, described terminal is accessed described Target cell;
Wherein, described cell merge module comprises:
First judging unit, for when judging that the load information of described Target cell exceeds normal load threshold value, judges whether the load information of described Target cell exceeds light loads threshold value;
Alternative cell list generation unit, for when judging that the load information of described Target cell does not exceed light loads threshold value, adds alternative cell list by the Target cell not exceeding light loads threshold value;
Comparing unit, for the service priority of the edge customer of Target cell described in the service priority of more described terminal and the list of described alternative cell;
First switch unit, for when service priority higher than described edge customer of the service priority of described terminal, switches in the community of second network by described edge customer, described terminal is accessed in the described Target cell of the former ownership of described edge customer;
Described alternative cell list generation unit also comprises:
Thresholding adjustment unit, for when Target cell quantity is zero in the list of alternative cell, increases described normal load threshold value and/or light loads threshold value.
6. different system switching device according to claim 5, is characterized in that, described first judging unit also comprises:
Second switch unit, for when judging that the load information of described Target cell exceeds light loads threshold value, switches to edge customer lower for service priority in described Target cell in the community of second network.
7. different system switching device according to claim 5, is characterized in that, described cell merge module also comprises:
Refusal access unit, for when service priority not higher than described edge customer of the service priority of described terminal, refuses the described network insertion request that described terminal accesses described first network.
8., according to the arbitrary described different system switching device of claim 5-7, it is characterized in that, described first network is LTE network, and described second network is HSPA network.
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